the correct answer is B. it could be used to create a complete genomic library.
cDNA produced using human brain tissue lacks the introns of the human genes.
Explanation:The correct answer is e. It lacks the introns of the human genes.
When cDNA is produced using reverse transcriptase, it is synthesized from mRNA, which carries the coding sequences of genes but lacks introns. Introns are non-coding regions of genes that are present in genomic DNA but are removed during mRNA processing. Therefore, cDNA lacks introns, which are present in the human genes.
To create a complete genomic library, all the genomic DNA fragments need to be cloned, which include introns. As cDNA lacks introns, it cannot create a complete genomic library. However, it can be used to create a complementary DNA (cDNA) library, which only contains the coding sequences of genes.
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Which of the following is an example of polygenic inheritance?
A) pink flowers in snapdragons
B) the ABO blood group in humans
C) Huntington's disease in humans
D) white and purple flower color in peas
E) skin pigmentation in humans
The answer would be E. Skin pigmentation in humans
Polygenic inheritance is the inheritance of a trait that is controlled by multiple genes. An example of this is skin pigmentation in humans.
Explanation:Polygenic inheritance refers to the inheritance of a trait that is controlled by multiple genes. It occurs when the phenotype of a trait is influenced by the additive effects of two or more genes. An example of polygenic inheritance is skin pigmentation in humans. The variation in human skin color is controlled by multiple genes that interact with each other to produce a range of skin tones.
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How does the cell cycle help organisms? Growth, repair, and reproduction of cells reproduction of the organism synthesis, replication, and reproduction of DNA in cells
The cell cycle is a series of phases that results in the formation of new cells. The cycle helps in the growth, repair, and reproduction of cells of organisms. Thus, option A is correct.
What is a cell cycle?A cell cycle is a division of the old parent cell through a series of stages to produce two new daughter cells. It includes G1, S, G2, and M stages, where the cell replicates, grows, and divides.
The formation of the new cells results in increased growth, replaces the old and damaged cells with new cells, and also is important in the formation of the gametes that are essential for reproduction.
Therefore, the cell cycle is involved in growth, repair, and reproduction.
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Answer:
a
Explanation:
edge 2023
What are the two very important things that we get out of photosynthesis? Now think...why are those SO important?
Plants prepare their food through a process called photosynthesis. In the presence of sunlight, plants create glucose using carbon dioxide, water, and other elements.
Importance of Photosynthesis-Plants use photosynthesis to prepare their nourishment. Animals consume plants, which are then devoured by plants.Solar or radiant energy is converted into chemical energy during photosynthesis.The production of agricultural crops is directly impacted by the rate of photosynthesis. All living things require oxygen, which it provides for the atmosphere.It regulates the amount of carbon dioxide and oxygen in the ecosystem. Fossil fuels are derived from plants.Fuel initially contains trapped energy from sun-driven photosynthesis.Most food chains are built on glucose, also known as sugar, which is a result of photosynthesis.The second byproduct of photosynthesis, oxygen, is helpful if you are an aerobic organism that needs oxygen to survive.The productivity of agricultural crops is influenced by the rate of photosynthesis.It guarantees that there is enough oxygen in the atmosphere for all living things. It regulates the amount of carbon dioxide and oxygen in the ecosystem.Fossil fuels are made from plants. The sun's photosynthesis results in he energy being stored in fuel.To know about Process of Photosynthesis click here-
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A section of the RNA sequence made from a particular gene is shown below.
AUGCAGGUACAGCGU
What would occur if a mutation in the DNA causes the RNA codon CAG to become UAG?
All hurricanes develop off the west coast of Africa near the equator here the air is really hot and really human with low pressure to storms develop true or false
Read this see if it can help you
AUGUST 28, 2014 -- What does the Sahara Desert in Africa have to do with hurricanes in the Atlantic, Gulf of Mexico, and Eastern Pacific Ocean? You might think this sounds a little crazy because hurricanes are very wet and deserts are very dry, but if it weren't for this huge, hot, dry region in North Africa, we would see far fewer hurricanes in the United States. The Sahara Desert is massive, covering 10 percent of the continent of Africa. It would be the largest desert on Earth, but based strictly on rainfall amounts, the continent of Antarctica qualifies as a desert and is even larger. Still, rainfall in the Sahara is very infrequent; some areas may not get rain for years and the average total rainfall is less than three inches per year. While not the largest or driest of the deserts, the Sahara has a major influence on weather across the Western Hemisphere.
How a Tropical Storm Starts A-Brewin'
The role the Sahara Desert plays in hurricane development is related to the easterly winds (coming from the east) generated from the differences between the hot, dry desert in north Africa and the cooler, wetter, and forested coastal environment directly south and surrounding the Gulf of Guinea in west Africa. The result is a strong area of high altitude winds commonly called the African Easterly Jet. If these winds were constant, we would also experience fewer hurricanes. However, the African Easterly Jet is unstable, resulting in undulations in a north-south direction, often forming a corresponding north to south trough, or wave, that moves westward off the West African Coast. When these waves of air have enough moisture, lift, and instability, they readily form clusters of thunderstorms, sometimes becoming correlated with a center of air circulation. When this happens, a tropical cyclone may form as the areas of disturbed weather move westward across the Atlantic. Throughout most of the year, these waves typically form every two to three days in a region near Cape Verde (due west of Africa), but it is the summer to early fall when conditions can become favorable for tropical cyclone development. Not all hurricanes that form in the Atlantic originate near Cape Verde, but this has been the case for most of the major hurricanes that have impacted the continental United States.
How can chimpanzees have different traits from one another?
a) they have different lengths of DNA
b) some are diploid and others have haploid
c) only some have chromosomes
d) they have different genes
The correct answer is D
Chimpanzees have different trait from one another because they have different genes. The different sub species of chimpanzee has different traits such as color of eyes, hair pattern, and many more. It is so because every gene expresses for a different character.
The difference in traits are due to the different genes present in them.
Answer:
d) they have different genes
Explanation:
i hope this helps
When meiosis is complete, what is produced? A. Four haploid cells B. Two haploid cells C. Two diploid cells D. Four diploid cells
The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.
Answer: A four haploid cells
When meiosis is complete,four haploid cells are formed from a single diploid cell. The four daughter cells produced that contains half the number of chromosome than that of their parent cell. Due to meiosis the number of chromosomes remain fixed in a species from generation to generation.
What was the species concept most used by Linnaeus?
A) biological
B) morphological
C) ecological
D) phylogenetic
biology help please
Answer:
Question 11 - A Matter and Energy are recycled
Question 12 - B Carbon Dioxide
Hope this helps! :)
Question 16 PLEASE HELP :(((
The model below represents a phase of meiosis. What stage of meiosis does the picture below represent?
1Points
A drawing of a phase of meiosis with individual chromatids moving towards opposite poles.
A
anaphase II
B
metaphase II
C
prophase I
D
telophase I
Roberto's family went to the coast of Georgia. While they were there, Roberto noticed that the rocks close to the water were smooth, and the rocks farther away from the water had more jagged edges. What MOST LIKELY caused the rocks to be smooth instead of rough?
A) birds pecking at the rocks
B) fish swimming over the rocks
C) the sun shining on the rocks
D) waves crashing down on the rocks
The answer is D) waves crashing down on the rocks
Answer:
waves crashing down
Explanation:
Escherichia coli is classified as:
A.)an archaea.
B.)a eukaryote.
C.)a bacterium.
D.)a virus.
E. coli is C.) a bacterium that normally typically resides in a warm blooded creatures intestines or in the environment and food.
What are organisms that make their own food called?
Is called autotroph organisms that create organic molecules needed for survival from inorganic sources. this is achieved through photosynthesis (which is light energy) or chemosynthesis (which is chemical energy).
And photosynthesis is when autotrophs capture and convert the light energy from the sun into usable chemical energy (which is their food).
i just answered the same question like 20 min ago XD
Organisms that make their own food are called autotrophs. They can be either photoautotrophs, which use photosynthesis to create energy from sunlight, or chemoautotrophs, which derive energy from inorganic compounds through a process called chemosynthesis.
Explanation:Organisms that can make their own food are called autotrophs. There are two main types, photoautotrophs, and chemoautotrophs. Photoautotrophs, which include plants, algae, and cyanobacteria, harness energy from sunlight to turn inorganic materials, such as carbon dioxide and water, into organic compounds like glucose, a process called photosynthesis. An example of this are plants, which are crucial to ecosystems because they supply energy for other organisms.
Chemoautotrophs, on the other hand, produce their own energy by extracting it from inorganic chemical compounds. This unique group of bacteria creates sugars not by using sunlight, but rather by utilizing energy from inorganic compounds
These organisms rely on other processes, such as chemosynthesis, to manufacture their food.
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What can you conclude is one limitation of the arrangement of glucose molecules that gives chitin and cellulose their strength?
A) It does not allow for storage of energy and, therefore, provides little nutritional value.
B) It does not allow for the accumulation of glycogen and, therefore, limits the organism's mobility.
C) It does not allow for the elimination of waste material and, therefore, causes higher energy use.
D) It does not allow for a bonding with hydrogen and, therefore, creates limitations on height. ...?
the answer is ( B :)
Answer:
The correct answer is the option B) It does not allow for the accumulation of glycogen and, therefore, limits the organism's mobility.
Explanation:
In cellulose and chitin the arrangement of glycogen in in alternate arrangement that provides the support to the plants that makes it strong and the limits its mobility.
If plants lac their special arrangement of the glycogen in chitin and cellulose the water will flow in and it will not be stand upright.
Thus, the correct answer is option B) It does not allow for the accumulation of glycogen and, therefore, limits the organism's mobility.
Which does the work of the immune system? A. Enzymes B. Hormones C. Lymphocytes D. Neurons
Answer: C.Lymphocytes
Reasoning: Lymphocytes- a group of small white blood cell with a single round nucleus.
The definition of the word should tell it, referring to the fact white blood cells are the key to the immune system.
The correct answer is option C.The immune system is primarily dependent on lymphocytes to carry out its functions, which include recognizing and destroying pathogenic invaders and malignant cells. Lymphocytes, including B cells and T cells, are essential for the adaptive immune response, while macrophages and natural killer cells play critical roles in the innate immune response.
The correct answer to which does the work of the immune system is C. Lymphocytes. Lymphocytes are a type of white blood cell that are a key component of the immune system. Their main function is to identify and help destroy infectious invaders such as viruses and bacteria.
Lymphocytes are responsible for the specific immune response which is essential for long-term protection against diseases. There are mainly two types of lymphocytes involved in the immune response: B cells and T cells. B cells are responsible for producing antibodies that bind to specific antigens on pathogens, marking them for destruction, while T cells destroy infected host cells, coordinate the immune response, and help activate B cells.
Macrophages, which are part of the innate immune system, can phagocytize pathogens and produce chemicals that promote inflammation. Furthermore, natural killer cells, a part of the innate immune response, use MHC I molecules to identify and destroy compromised cells.
Africa was covered by glaciers during the Pleistocene ice age. Please select the best answer from the choices provided T F
The given statement is False.
Africa was not covered with glaciers during the Pleistocene ice age. Africa was divided into different parts and some part of Africa was was greener and full of different kinds of species.
The tropical Africa had 5 degree less than the temperature of the Africa right now. There were different plant and animals species present at that time.
Africa was not covered by glaciers during the Pleistocene ice age. The ice sheets and glaciers primarily covered regions in the Northern Hemisphere, such as North America, Europe, and parts of Asia. The statement is False (F).
Africa, located near the equator, experienced climatic changes during the Pleistocene but did not have extensive glaciation. During the Pleistocene epoch, which lasted from about 2.6 million to 11,700 years ago, Earth experienced a series of ice ages characterized by the growth and retreat of large ice sheets and glaciers. However, Africa did not have extensive glaciation during this time period.
Africa's position near the equator played a significant role in its climate during the Pleistocene. The equatorial region generally experiences warmer temperatures compared to higher latitudes, making it less conducive to the formation and maintenance of large-scale ice sheets.
Instead, Africa had more arid and semi-arid conditions in certain regions, with changes in the distribution of vegetation and the presence of large lakes in some areas. Therefore, the statement is False (F).
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What is climate? A: physical state of the atmosphere at any given time and place. B: long term patterns in temperature and precipitation. C: the measure of how quickly molecules are moving. D: the weight of the air above any particular point.
The answer is.. B :)
which of these make up the vascular tissue
Which of what makes up vascular tissue
The answer is: phloem.
Prader-Willi syndrome is caused by a mutation in an autosomal maternally imprinted gene. Label the following statements as true or false, assuming that the trait is 100% penetrant. Sons of affected males have a 50% chance of showing the syndrome. Daughters of affected males have a 50% chance of showing the syndrome. Page 614Sons of affected females have a 50% chance of showing the syndrome. Daughters of affected females have a 50% chance of showing the syndrome.
The PWS or the Prader-Willi syndrome refers to a rare genetic disorder in which the chromosome 15 gene are either unexpressed or deleted on the paternal chromosome. The paternal origin of the genetic material, which is influenced in the syndrome is essential as the specific region of chromosome 15 taking part is subject to parent of origin imprinting, signifying that for a number of genes in this region, only one copy of the gene is articulated, while the other is silenced due to imprinting.
This signifies that the majority of the individuals exhibit one functioning and one silenced set of these genes. While the individuals with the syndrome exhibits a non-functioning set and a silenced set. The disease is completely autosomal, therefore, it will not predict the sex of the offspring. Also, imprinting is on maternal copy, therefore, if the affected individual is male, it will pass on the mutated copy only in 50 percent of its gametes, and a non-functioning copy to the remaining 50 percent of the gametes. Thus, all of his offspring will exhibit PWS or will get affected.
In other case, if the affected person is female, it will pass on the mutated copy only in 50 percent of its gametes and a non-functioning copy to the remaining 50 percent of the gametes and offspring will take on the functioning copy from its male parent, therefore, all of her offspring will be normal.
Thus, the given statements will be:
1. Sons of affected males have a 50% chance of showing the syndrome - True
2. Daughters of affected males have a 50% chance of showing the syndrome. - True
3. Sons of affected females have a 50% chance of showing the syndrome. - False
4. Daughters of affected females have a 50% chance of showing the syndrome. - False
Prader-Willi syndrome is caused by a mutation in an autosomal maternally imprinted gene. Sons of affected males have a 0% chance of showing the syndrome, while daughters of affected males have a 50% chance of showing the syndrome. Sons and daughters of affected females both have a 50% chance of showing the syndrome.
Explanation:Prader-Willi syndrome is caused by a mutation in an autosomal maternally imprinted gene. The statements provided are incorrect. Sons of affected males actually have a 0% chance of showing the syndrome, while daughters of affected males have a 50% chance of showing the syndrome. Sons and daughters of affected females both have a 50% chance of showing the syndrome.
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Professor Whitney has a sample of lead and a sample of iron. The samples have equal mass. When Whitney heats the samples, the lead reaches a higher temperature than the iron, even though both samples absorbed the same amount of thermal energy. What can Whitney conclude from this experiment? A. Iron is a better conductor of heat than lead. B. Lead is a better conductor of heat than iron. C. Lead has a higher heat capacity than iron. D. Iron has a higher heat capacity than lead.
Your answer would be B. Lead is a better conductor of heat than iron. Hope this helps! :D
In which layer of the atmosphere does the space shuttle travel?
Troposphere.
Mesosphere.
Thermosphere.
Stratospehere.
Correct option is C. The space shuttle travels within the thermosphere, which is above the mesosphere and below the exosphere, at altitudes up to 600 kilometers above Earth.
The space shuttle travels in the thermosphere, which is the layer above the mesosphere. The thermosphere extends to about 600 kilometers (372 miles) above the Earth's surface, with temperatures increasing as altitude increases. This is the layer where the International Space Station orbits and where phenomena such as the northern and southern lights occur. Beyond the thermosphere lies the exosphere, where air molecules are sparse and can escape into space.
From the organism listed two food chains and one food web. Maze locust,lizard snake, carrots, rabbit, fox, lion , grass grasshopper, frog, python, eagle, tiger, hawk ,deer. Ensure each trophic level in the food chain and the food web is labeled
um.............. im not sure about this.
Answer:
I have no clue if this is right but i think it is grasshopper and rabbit
Explanation:
Which term is used to describe populations that live close enough to interbreed?
the answer is sympatry
https://en.wikipedia.org/wiki/Sympatry
you can find the whole meaning of it in wikipedia :D
A biological population is a group of individuals of the same species that live close enough to interbreed and produce viable, fertile offspring. They are confined to a certain geographic area, with boundaries that can be either natural or artificial. Over time, isolated populations may diverge due to various evolutional forces.
Explanation:The term used to describe populations that live close enough to interbreed is a biological population. This is defined as a group of individual organisms that interbreed and produce viable, fertile offspring. These individuals belong to the same biological species and are confined to a certain geographic area that may have natural or artificial boundaries, such as rivers, mountains, or roads. An example of this is a population of crickets living in a specific area, but separated from other populations of the same species due to a flood. Over time, these distinct populations may diverge due to the forces of natural selection, mutation, and genetic drift.
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The fact that children in different cultures ____ in the age at which basic motor skills appear demonstrates that ____.
a. vary somewhat; genetic factors can slow or accelerate early motor development
b. vary somewhat; environmental factors can slow or accelerate early motor development
c. do not vary; genetic factors alone determine early motor development
d. do not vary; environmental factors alone determine early motor development
Children's motor skill development times vary across cultures due to environmental factors, not solely genetic ones.
The fact that children in different cultures vary somewhat in the age at which basic motor skills appear demonstrates that environmental factors can slow or accelerate early motor development. This is supported by research indicating that while there are universal sequences of development, such as in language milestones, the timing of motor skills like sitting, crawling, and walking can differ due to varying cultural practices and childcare. For instance, in the Aché society of Paraguay, children typically start to walk later than those in Western cultures because they are carried more frequently to ensure their safety in the forest environment. However, as they grow older, their motor skills develop to surpass those of children in the U.S.
The model below represents a phase of meiosis. What stage of meiosis does the picture below represent?
1Points
A drawing of a phase of meiosis with the chromosome pairs alinged along the equator of the cell.
A
prophase I
B
anaphase I
C
metaphase I
D
metaphase II
Answer:
metaphase II
Explanation:
The image shows the presence of chromosomes at the equator of the cell. Each chromosome is shown to have two sister chromatids. Chromosomes are not arranged on the equator in pairs but are present in as a single chromosome. Since no chromosome pairs but the single chromosomes are aligned at the equator of the cell, the phase is metaphase II.
The model represents C. metaphase I of meiosis.
Explanation:The model represents metaphase I of meiosis. In metaphase I, homologous chromosome pairs align along the equator of the cell. This is different from metaphase II, where individual chromosomes align along the equator. Metaphase I is a stage of meiosis, a specialized cell division process that reduces the chromosome number by half to create haploid cells (gametes).
During metaphase I, homologous pairs of chromosomes, one from each parent, align at the cell's equatorial plane or metaphase plate. This alignment ensures that when they separate during anaphase I, each daughter cell receives one chromosome from each pair, contributing to genetic diversity in the resulting gametes.
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Why is it incorrect to call interphase a resting phase
In humans, the male has an X and Y sex chromosome. The human female has two
X chromosomes. In birds, the female has a Z and a W sex chromosome while the
male has two Z chromosomes. Which of the following statements is accurate
about which parent controls the gender of the offspring?
a. In humans and birds the male controls the gender of all the offspring.
b. In humans and birds the female controls the gender of all the offspring.
c. In humans the male controls the gender of the offspring, and in birds the female controls the gender.
d. In humans the female controls the gender of the offspring, and in birds the male controls the gender.
e. Control of the gender of any human or bird offspring is related to the environmental conditions at the time of conception.
i think the answer is (C
What role does cellular respiration play in the carbon cycle?
A. Plants release oxygen.
B. Plants absorb carbon dioxide.
C. Animals produce carbon dioxide.
D. Animals absorb oxygen.
Cellular respiration contributes to the carbon cycle by animals consuming oxygen and organic matter, producing carbon dioxide that gets released into the atmosphere. This carbon dioxide is then absorbed by plants and used in photosynthesis, releasing oxygen that is then used again by the animals.
Explanation:Cellular respiration plays a fundamental role in the carbon cycle. During this process, organisms, predominantly animals, consume oxygen and organic matter, like carbohydrates, and produce carbon dioxide as a by-product. This carbon dioxide is released back into the atmosphere.
The released carbon dioxide is then absorbed by plants for the process of photosynthesis, which in turn release oxygen that is used again by animals for respiration. Thus, the process of cellular respiration bridges the essential parts of the carbon cycle, ensuring a continuous flow of carbon in the environment.
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Cellular respiration involves [Option C ] animals producing carbon dioxide as they generate energy from organic molecules.
Cell breath is a critical interaction in the carbon cycle. Animals use energy to break down glucose and other organic molecules during cellular respiration to produce carbon dioxide. This cycle discharges carbon dioxide into the environment, which can then be utilized by plants during photosynthesis to deliver oxygen and glucose. In rundown, while plants assimilate carbon dioxide and delivery oxygen through photosynthesis, creatures consume oxygen and delivery carbon dioxide through cell breath. These two cycles are interconnected and fundamental for keeping up with the equilibrium of carbon in the air. WILL GIIVE BRAINLIEST IF U ANSWER IN 3 SECONDS
As a cell gets larger, its surface area to volume ratio
A. stays the same.
B. increases.
C. decreases.
D. becomes zero.
ALSO WORTH 20 PTS
The surface area-to-volume ratio of a cell decreases as the cell grows larger, due to the surface area increasing by the square of its radius and the volume increasing by the cube of its radius. This decrease in ratio is vital for cell efficiency and function, especially in eukaryotic cells where compartmentalization and specialization help manage this challenge.
As a cell gets larger, its surface area-to-volume ratio decreases. This is due to the mathematical relationship between the surface area and volume as a shape increases in size. For a cell, the surface area grows by the square of its radius, while the volume grows by the cube of its radius, resulting in an exponential disparity between them as the cell size increases. Consequently, when considering a cell's growth, the correct answer to the question is (C). decreases.
An increase in cell volume without a proportionate increase in surface area leads to a decreased ratio, impacting the cell's efficiency in exchanging materials and nutrients through its membrane. It is crucial for cells to maintain an optimal surface area-to-volume ratio to ensure effective diffusion and cellular function. In the context of eukaryotic cells, which are typically larger than prokaryotic cells and contain organelles such as mitochondria and ribosomes, maintaining this ratio is handled through increased compartmentalization and specialization.
The scientist has a water sample from an unknown location in the lake. When bromothymol blue is added, the sample becomes blue. From where did the sample most likely come?
The aqueous bromothymol blue solution act as a pH indicator and turns blue only in case when the pH of the sample is above or equal to 7.6
Since the pH of the water at the surface of the lakes is higher and ranges between 7.5 to 8.5 the color of bromothymol turn blue.