prokaryotes can take up genetic material from each other without reproducing or even being closely related in a phenomenon called?
A. abiogenesis
B. ribosomal uptake
C. horizontal gene transfer
D. parasitism
Answer:
C. horizontal gene transfer
Explanation:
Horizontal gene transfer (HGT) can be defined as a method of gene transfer, which involves movement of genetic material between organisms by means other than reproduction or transfer of genetic material from parent to offspring.
In prokaryotes, HGT occurs by means of conjugation, transformation, or transduction.
Conjugation involves transfer of DNA between bacteria by direct cell-to-cell contact or conjugation bridge. Transformation involves uptake of naked DNA by the bacterial cells and trasnduction involves gene transfer wit the help of bacteriophages.
Thus, the correct answer is option (C).
Horizontal gene transfer or lateral gene transfer is the movement of genetic material between unicellular and/or multicellular organisms other than by the transmission of DNA from parent to offspring. HGT is an important factor in the evolution of many organisms.
Prokaryotes can take up genetic material from each other without reproducing or even being closely related in a phenomenon called horizontal gene transfer. Therefore, option (C) is correct.
Horizontal gene transfer (HGT) is a type of gene transfer that involves moving genetic material from one organism to another without reproducing or passing genetic material from a parent to a child.
HGT happens via conjugation, transformation, or transduction in prokaryotes.
Through direct cell-to-cell contact or a conjugation bridge, DNA can be transferred between bacteria during conjugation. Both transformation and transmission involve the transfer of genes using bacteriophages and involve the uptake of DNA by the bacterial cells.
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Why can lichens be used as living indicators of air pollution
Answer:
The hardy lichens are useful bioindicators for air pollution, espeially sulfur dioxide pollution, since they derive their water and essential nutrients mainly from the atmosphere rather than from the soil.
Explanation:
It also helps that they are able to react to air pollutants all year round.
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Final answer:
Lichens are used as indicators of air quality due to their sensitivity to pollutants, with their health and abundance being used to monitor environmental conditions. Their decline signals increased air pollution, while their presence indicates cleaner air. They also have ecological and historical significance.
Explanation:
Lichens are excellent biological indicators of air quality due to their extreme sensitivity to pollutants, particularly nitrogenous and sulfurous compounds. These organisms lack roots, thus they absorb water and nutrients over their entire surface area, making them especially vulnerable to pollutants dissolved in rainwater. The U.S. Forest Service and National Park Service utilize the health and abundance of lichen populations in an area to monitor air quality. When lichens decline or disappear from an area, it is often a sign that the air is heavily polluted. Conversely, their presence usually indicates cleaner air conditions.
Which element is considered the most versatile element in living organisms and why?
A.hydrogen, because it is a key component in organic molecules and provides most of the mass of human bodies
B.hydrogen, because it can be found in both organic and inorganic molecules
D.carbon, because it can bond with many elements to form complex molecules
D.carbon, because it provides strength to the important protein, keratin
Answer:
Carbon
Explanation:
Carbon, because it can bond with many elements to form complex molecules" is the element that is considered the most versatile element in living organisms
Final answer:
Carbon is the most versatile element in living organisms due to its ability to form stable covalent bonds with various elements, creating complex organic molecules vital for life.
Explanation:
The element considered the most versatile in living organisms is carbon, primarily because of its unique chemical bonding properties. Carbon's four outer shell electrons allow it to form four covalent bonds with a variety of other atoms, leading to a vast diversity of complex organic molecules essential for life. This capability enables the formation of the four major types of biological molecules: carbohydrates, lipids, proteins, and nucleic acids, all of which play crucial roles in the structure and function of living cells.
How can these forelimbs explain how life changes over time?
Answer:
The correct answer would be divergent evolution showing by homologous organs.
Explanation:
In the illustration human arm, the flipper of the dolphin, wings of bat and forearm of frog are shown. All these four forelimbs have a different function, however, these forelimbs are having the same underlying anatomy.
The organs having basic structure and origin, but different functions are known as homologous organs. These organs point towards the same ancestor from these organisms evolved. They show a case of divergent evolution.
When related species become less similar in order to adapt and survive in different conditions, evolution is called divergent evolution.
Thus, these forelimbs provide evidence for divergent evolution.
The symbiotic relationship between a flower and the insect that feeds on it's nectar is an example of?
Answer:
the flower needs the insect to spread the flowers pollen and the insect feeds on the nectar.
Explanation:
How does intestinal failure affect the body?
Oxygen does not make it to the brain.
Energy is not given to the body.
Carbon dioxide builds up in the body.
Blood is not moved in the body.
Answer:
Intestinal failure occurs when the intestines are no longer able to absorb nutrients or fluids. ... When the small intestine is missing, the body cannot absorb water, vitamins, and other nutrients from food to sustain life. Motility disorder, such as gastroparesis, is a common cause of intestinal failure.
Explanation:
Thus the above response i.e., "option b" is correct.
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The model shows how pimples are formed in the skin. Why do you think this process can occasionally lead to pain?
I can’t see the model but perhaps the pimple has stayed in the persons skin to long and grew infected? Like I said I’m sorry but I can’t see any “model” but I do hope this helps.
Answer:
the answer is B. The bacteria replication leads to swelling, which irritates nerves in the dermis.
Explanation:
why is chlorophyll not able to capture the energy in green light
All plants have chlorophyll-a which blocks(reflects) green light and absorbs red and blue wavelengths. It seems like it would be more efficient for plants to absorb green light since energy is most powerful from the sun through green wavelengths. However, the chlorophyll-a in chloroplasts actually defend the plant from harmful damage of the TREMENDOUS amount of power from the sun transmitted in green wavelengths.
SO CHLOROPHYLL-A PROTECTS PLANTS FROM TOO MUCH ENERGY IN GREEN LIGHT.
In which location would be rate of soil erosion most likely be higher than the rate of soil formation? A. A river delta B. A steep slope C. A tropical area with moderate rainfall d. A temperature forest
Answer:
B. A steep slope
Explanation:
The rate of erosion is the highest on barren lands and on steep slopes. The steep slopes are much more easy to erode because the gravity is pulling downwards, and the angle of the slope is helping that a lot. Also, the steeper the slope is, the less vegetation there is, thus the soil usually is not protected from erosion. When there's rain, snow, stronger winds, they manage to pull down the soil with ease as there's nothing that is an obstacle to stop them. That results in gradual leveling up of the slope, constantly losing on height, and eventually being totally flattened.
Final answer:
The rate of soil erosion is likely to be higher than the rate of soil formation on a steep slope due to more runoff and less vegetation to hold the soil in place.
Explanation:
The location where the rate of soil erosion would most likely be higher than the rate of soil formation is B. A steep slope. This is because soil can only develop where surface materials remain in place and are not frequently moved away by processes such as mass wasting. Steep slopes usually have more soil erosion due to several factors: more runoff of rainwater, less water infiltration, and less vegetation to anchor the soil. This results in little or no soil as the formation cannot keep up with the erosion. Other locations like river deltas, tropical areas with moderate rainfall, and temperate forests have mechanisms that help in soil accumulation or experience a balance between soil formation and erosion.
The force that gravity exerts on an object is called _____. A. mass B. density C. volume D. weight
Answer: D. Weight
Explanation:
On different planets, the mass, density and volume of an object will stay the same, but the weight changes depending on the gravity.
Hello There!
The correct answer is weight.
Weight is a measure of the force of gravity on an object.
Will Give Brainliest And 5 Star /// Which of the following technologies would best help a farmer who wants to increase the crop production in his farm?
Cloning, because it can create identical copies of crops to increase the genetic diversity
Genetic engineering, because it helps increase the diversity of crops by making them stronger
Genetic engineering, because it helps crops grow larger and faster and resist diseases and insects
Cloning, because it can create genetically modified crops that can withstand severe weather conditions
Answer:
Genetic engineering, because it helps crops grow larger and faster and resist diseases and insects
Explanation:
Cloning does not increase the genetic diversity, because all the plants will be exactly the same. Cloning does not involve genetically modifying genes, so A and D are wrong period. Genetic engineering can be done to produce crops that are resistant to diseases and insects along with growing faster and stronger.
Answer:
the answer is C
Explanation:
Which kinds of cells are always single-celled?
a). eukaryotes
b).prokaryotes
Answer:
B
Explanation:
prokaryotes
It’s prokaryotes because it’s like bacteria and stuff and eukaryotes are for people, plants and animals
in drosophila melanogaster, white eye is a x-linked recessive
Answer:
In Drosophila melanogaster, white eye is an X-linked recessive trait, and red eye is an X-linked dominant trait. Assume that the flies have a diploid set of ...
Explanation:
Which statement about stress is true?
Answer:
A hopefully the answer is right
Answer: C
Explanation: Positive stress can help you accomplish goals.
Fungi and bacteria are ___?
Bacteria and fungi are Microorganisms
How much does an elephant weigh?
Answer:
An African Bush Elephant- 13,000 lbs
An Asian Elephant- 12,000 lbs
An African Forest Elephant- 6,000 lbs
Explanation:
How was CBM radiation first discovered
Answer:
It was Discovered on May 20, 1964, By American radio astronomers Robert Wilson and Arno Penzias discovered the cosmic microwave background radiation (CMB), the ancient light that began saturating the universe 380,000 years after its creation.
Explanation:
Answer:
On May 20, 1964, American radio astronomers Robert Wilson and Arno Penzias discovered the cosmic microwave background radiation (CMB), the ancient light that began saturating the universe 380,000 years after its creation. And they did so pretty much by accident.
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what are the responsiblities of the region of the brain highlighted below
Answer: "regulating important involuntary bodily functions such as blood pressure, heart rate, breathing and swallowing".
Explanation:
The area highlighted in this example is the posterior part of the brain, called the brainstem. The brainstem is comprised of three important parts, the medulla, the pons and the midbrain. The basic functions of this brain area include breathing, heart rate and sleeping.
What selective breeding, does the selecting?
(A.) Humans
(B.) The organisms that are breeding
Answer:
(A)
Explanation:
Humans choose what traits they like from certain animals, then breed them to make more of that trait, combined with the other trait they liked. Hence how we got so many breeds of dogs.
A. Humans is correct
the atomical plane denoting the vertical field running through the body from front to back dividing the body into the right and left sides is the what
The sagittal plane divides the body vertically into left and right sides, with the midsagittal plane further specifying equal halves. The coronal plane divides the body into front and back, while the transverse plane divides it into upper and lower parts. Option b is correct.
This plane can further be classified into the midsagittal plane when it divides the body into equal left and right halves and parasagittal plane when the division into left and right sides is unequal.
Coronal (frontal) plane: Divides the body into anterior (front) and posterior (back) portions.Transverse plane: Divides the body into superior (upper) and inferior (lower) portions.Midsagittal plane: Divides the body vertically into equal left and right halves.In summary, while several anatomical planes can be used to describe sections of the body, the vertical division into right and left sides specifically corresponds to the sagittal plane, with the midsagittal plane being a special case of the sagittal plane that divides the body into equal halves.
Complete question as follows:
the atomical plane denoting the vertical field running through the body from front to back dividing the body into the right and left sides is the what
a. coronal plane or frontal plane
b. sagittal plane
c. transverse plane
d. midsagittal plane
_____ is the irregular break of a mineral
Answer:
I'm not sure if this is right, but i believe the right answer would be fracture.
Explanation:
In geology, a fracture is any separation in a geologic formation, such as a joint or a fault that divides the rock into two or more pieces. A fracture will sometimes form a deep fissure or crevice in the rock. Fractures are commonly caused by stress exceeding the rock strength, causing the rock to lose cohesion along its weakest plane.
hope this helps :)
Answer: Fracture
Explanation:
Poison ivy vines often climb tree trunks toward light. They do not harm the trees. What form of symbiotic relationship is this? *
a. Mutualism
b. Commensalism
c. Predation
d. Parasitism
Answer:
commensalism is your answer
Explanation:
commensailisn is where both organisms benefit and neither bring harm to each other.
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Which are characteristics of polyps?
A. are usually sessile, have tentacles, mouths open downward
B. swim freely, lack tentacles, mouths open upward
C. swim freely, have tentacles, mouths open downward
D. are usually sessile, have tentacles, mouths open upward
Answer:
D. are usually sessile, have tentacles, mouths open upward
Explanation:
Answer:
d
Explanation:
i took the test
The graphs below illustrate change in a lizard population over time. Which process most likely led to the change in the lizard population?
A
natural selection acting on a harmful trait
B
natural selection acting on a beneficial trait
C
natural selection acting on a dominant trait
D
natural selection acting on a recessive trait
Answer: Option 'C' is correct.
Explanation:
Dominant traits are those traits which are visibly expressed in the organisms ( here, lizard)
Recessive traits are those traits in which genes are carried but it is not visible itself in the organisms.
Here, we can see that genes of Allele Z is carried by population of lizard in 50 years.
Here, it is natural selection acting on a dominant trait.
Hence, option 'C' is correct.
The process most likely led to the change in the lizard population is the natural selection acting on a dominant trait. So, the correct option is C.
What do you mean by Natural selection?Natural selection is a selection made by nature on the basis of the most favorable variations among all the variations.
The proportion of Z-allele increases from year 1 to year 50. So, this allele generally contains a dominant trait, because dominant traits are visible in organisms when they are present. While recessive traits are not identified or visible even they are present in organisms.
Therefore, the process most likely led to the change in the lizard population is the natural selection acting on a dominant trait.
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PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! THIS ONE IS FOR 20 POINTS. I will also give you the brainiest points?!!!!!!!!!!!what cell structure uses aerobic respiration to supply energy to the cell?
Answer:
Cytoplasm
Explanation:
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The earth is the ____ planet from the sun, which is just the right distance for life to utilize in the suns power and energy
Answer: earth is the 3 planet form the sun
Explanation: the earth is in the perfecdt location for it to be not that cold and at the same time not that hot so life can live on the planet.\
I really hope this helps you out!
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how do levels of thermal energy and speed differ between low and high friction surfaces? how does this difference relate to a transformation of energy?
- "This energy is usually in the form of low-level thermal energy. It is only possible to extract work when there is a temperature difference, so low-level thermal velocity; this means that the force of friction and the applied force are equal in magnitude."
- "An energy transformation is the change of energy from one form to another. Energy transformations occur everywhere every second of the day. There are many different forms of energy such as electrical, thermal, nuclear, mechanical, electromagnetic, sound, and chemical."
Answer:
Speed reduces with increased friction while thermal energy increases with increased friction
Explanation:
The higher the friction between two surfaces the higher will be the thermal energy while the lower will be the speed.
While in case of no or low friction between two surfaces, the thermal energy will reduce while the speed increases tremendously and causes slipping.
The energy transforms from kinetic energy to frictional energy and then to thermal energy.
Evolution is one example of a theory. From what you understand about the meaning of the
word theory in science, what can you conclude about this theory?
There is very little evidence to support it.
It may soon become a law.
Scientists no longer need to test this idea because once a theory is determined it is not
revised.
It is supported by hypotheses, repeated tests and law from one or more fields of science.
Answer: It is supported by hypotheses, repeated tests and law from one or more fields of science.
Explanation:
In the context of science, a theory is a well-established explanation for scientific data. Theories typically cannot be proven, but they can become established if they are tested by several different scientific investigators.
The term 'theory' in science, such as the theory of evolution, refers to a well-supported explanation confirmed through testing and evidence, not a guess. It is incorrect to dismiss evolution as 'just a theory' as it misconstrues the scientific strength and evidence behind it.
When discussing the theory of evolution, it's important to understand the scientific meaning of the word 'theory'. A scientific theory is not a simple guess, but rather a comprehensive explanation of aspects of the natural world that has been substantiated through extensive testing, observation, and experimentation. Theories are supported by a multitude of evidence and, contrary to popular misconception, are not on the verge of becoming a law. Scientific laws describe relationships under certain conditions in nature, while theories explain why these relationships exist.
The theory of evolution is one such well-established theory, supported by evidence from various fields, including anatomy, genetics, paleontology, and ecology. It articulates how species change over time through mechanisms like natural selection and genetic drift. Theodosius Dobzhansky's statement that 'nothing in biology makes sense except in the light of evolution' underscores the fundamental role of evolutionary theory in the biological sciences. It is incorrect to say that evolution is 'just a theory' in an attempt to diminish its credibility; such a statement misunderstands the scientific definition and the robust evidentiary support backing it.
Which kingdom is known for its ability to survive in extreme environments?
Answer:
archaea
Explanation:
Archaebacteria kingdom is known for its ability to survive in extreme environments.
What are Archaebacteria?
Archaea are generally similar in appearance to bacteria, hence their original classification as bacteria, but have significant molecular differences most notably in their membrane structure and ribosomal RNA. They are found in extreme environments such as hot boiling water and thermal vents under conditions with no oxygen or highly acid environments. Although members of this group are generally less versatile than bacteria and eukaryotes, they are generally quite skilled in adapting to different extreme conditions, holding frequently extremophily records.
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A purebred talk pea plant is crossed with a purebred short pea plant. All of the resulting offspring are tall. What does this tell you about the gene controlling pea plant height?A. The short version of the gene wasn’t passed from the short parent to the offspring. B. The short version of the gene is dominant to the tall version of the gene. C. The tall version of the gene is dominant to the short version of the gene. D. The tall version of the gene wasn’t passed from the tall parent to the offspring.
Answer and Explanation:
We assume that the tall version has genes denoted by T, and short versions have genes denoted by t.
Purebred tall version will have genotype TT, and short version, tt.
The Punnett square for the crossing between purebreds would be the following:
T T
t Tt Tt
t Tt Tt
Which means that the offsprings all have genotype Tt. If they appear tall, this implies that the tall variety (T) is dominant, so the phenotype of the short version is not expressed.
Conclusion: The tall version of the gene is dominant to the short version of the gene.
The tall pea plant gene is dominant, and the short pea plant height is submissive. Each offspring has both genes, but since the tall gene is dominant, it is the only gene that shows up. Thus, option "C" is correct.
How, explain your answer?From a heterozygous cross (Tt x Tt) the produced offspring would consist of:
25% TT -it would be tall-.
50% Tt -it would be tall as the gene T is dominant-.
25% tt -it would not be tall-.
Thus the produced offspring that would be tall is (50% + 25%) 75%. The answer is option C.
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