Answer:For 1
Option: D
RNA interference process inhibits expression of gene by degrading mRNA. It is a post transcriptional process occur in eukaryotes. RNA is broken into small pieces( siRNA) , these small RNA activates the ribonuclease. Ribonuclease digests the mRNA which codes for certain protein thus halting translation.
Researchers use this mechanism to learn function of gene. This technique is now used to check gene causing certain disease. Artificial mRNA are also available which can be introduced directly in laboratories.
Explanation:
By destroying mRNA, the RNA interference mechanism prevents the expression of genes, hence question 1- d, for 2- c, and 3- b is the correct options.
What is RNA interference?Eukaryotes undergo this post-transcriptional process, small RNA fragments (siRNA) that have been cut apart from RNA activate the ribonuclease.
Translation is stopped by ribonuclease's digestion of the mRNA that codes for a particular protein.
This technique is used by researchers to understand how genes operate, this method is being employed to identify genes responsible for certain diseases.
Therefore, there are also synthetic mRNA options that may be used right away in lab settings, hence for question 1, d is the correct answer.
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Select the correct answer
John wants to show the evolutionary relationship between a lion and a cat and group them based on the
these is the best and simplest method to represent this information?
A.
Cladistic analysis
B.
Taxonomy
C.
Tree of Life
Reset
Reset
Next
Next
Answer:
The answer is c. tree of life.
Explanation:
this method visually, best compares similarities and differences so the audience can judge the same question.
a structure that is found in a plant cell and not in an animal cell is a ?
central vacuole
mitochondrion
nucleus
ribosome
A structure that is found in a plant cell and not in an animal cell is a central vacuole.
Option A
Explanation:
Plant cells are different from animal cells because a large central vacuole is present in the plant cell which is filled with water and salts to create a turgor pressure which gives the cell the physical strength to overcome the water pressure. The central vacuoles are not present in the animal cells but there are small vesicles which transports the molecules from surface to cytoplasm or vice versa.
Which structure is found in all cells?
Answer:
All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
Explanation:
The structures that are found in all types of cells are the cell membrane, ribosomes, cytoplasm, and DNA\
In biology, the smallest unit can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell. The nucleus is a structure inside the cell that contains the nucleolus and most of the cell’s DNA. It is also where most RNA is made. The cytoplasm is the fluid inside the cell. It contains other tiny cell parts that have specific functions, including the Golgi complex, the mitochondria, and the endoplasmic reticulum. The cytoplasm is where most chemical reactions take place and where most proteins are made. The human body has more than 30 trillion cells.
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Which is a group of tissues that work together to carry out a common function?
cell
organ
organelle
organ system
Answer:
organ
Explanation:
An organ is a group of tissues that work together to carry out a common function?.
Answer:
organ
Explanation:
What problem would a person most likely have if her kidney did not work
correctly?
They would most likely suffer from blood problems and/or urination problems
Oxygen is a reactant in cellular respiration. Which term best describes oxygen
in photosynthesis?
Answer:
ANSWER: Oxygen is a product of photosynthesis.
Explanation:
Photosynthesis is a chemical reaction that occurs in plants. Photosynthesis uses ATP energy from sunlight to convert Carbon Dioxide and Water into Glucose. Oxygen is also formed during photosynthesis.
Oxygen is the product of photosynthesis, where water and carbon dioxide are the reactants and G3P and oxygen are the products. This contrasts with cellular respiration, where oxygen is a reactant.
Explanation:When it comes to the role of oxygen in photosynthesis, it is best described as a product rather than a reactant. In the process of photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) and, using the energy from sunlight, convert these reactants into glucose (C6H12O6) and oxygen (O2). The correct statement among the options provided would be option (b), which states that in photosynthesis, chlorophyll, water, and carbon dioxide are reactants, while G3P (glyceraldehyde-3-phosphate) and oxygen are products.
This contradicts the role of oxygen in cellular respiration, where oxygen serves as a critical reactant. In cellular respiration, oxygen is used to break down glucose, producing ATP, water, and carbon dioxide as waste products.
A scientific idea becomes valid when it is what?
Answer:
when it is proven
Explanation:
A scientific idea becomes valid when it is tested.
a diploid human cell contain 46 chromosomes if such a cell under go mitosis then how many chromosome will be present in the daughter cells if it has just passed through telophase
Answer:
The daughter cells will have equal number of chromosomes like that of parent cell i.e. 46.
Explanation:
Mitosis is a process of division that creates two new daughter cells with same genetic material and thus equal number of chromosomes. It involves: Prophase, Metaphase, Anaphase, Telophase and at the end cytokine.
In prophase, the nuclear envelope of the cell breaks down along with chromosome condensation. In metaphase, the condensed chromosomes line up at equatorial plate. In anaphase, the sister chromatids of lined chromosomes are pulled towards the opposite poles. While in telophase the cell is ready for division, its nearly dividing stage in which the cell retains its normal structures.
How do feedback signals affect the cell cycle ?
Answer:
The cyclins activate the CDKs, which affect the cell cycle at three important checkpoints: Late in the G1 stage of the cell cycle, triggering the cell to move into the S phase.
Explanation:
What idea did Malthus introduce?
Answer:
The Malthusian Theory of Population: The concept that the human population exponentially grows and will eventually be too large to be supported by the food production rate, leading to mass starvation.
People who believe this are Malthusians.
Explanation:
This is more of an APHG question, but yeehaw
Malthus illustrated the essay on the principles of population and its growth. According to his theory, the population growth will consistently supervise to outrun the food supply.
Who was Thomas Malthus?Thomas Malthus was an English scholar and influential economist who worked in the field of economy and demography.
The theory of Malthus reveals the growth of the population with respect to the food supply. He believed that the balance between population growth and food supply can be maintained through preventative and flattering appraisal.
Therefore, it is well described above.
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Which would best keep the oxygen cycle stable?
A. Cutting down jungles to create farmland
B. Eliminating parks in large cities
C. Dumping toxic chemicals into the ocean
D. Reducing the amount of deforestation
Answer: D. Reducing the amount of deforestation
Answer:
D. Reducing the amount of deforestation
Explanation:
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Hope this helps!!!!
10. Which is an example of a chemical change?
Hello There!
A chemichal change is when the composition of the substance changes. It is a change between one or more substances and this creates new substances but it has different properties.
An example of a chemichal change could be mixing baking soda and vinegar together. When this happens, The baking soda reacts with the vinegar and this causes a new gas to be formed. "Carbon Dioxide"
Which is an idea that Einstein introduced in his theories of relativity?
A.) Space is made up of three dimensions.
B.) Space and time are separate and distinct entities.
C.) Space-time bends due to the masses in the universe.
D.) Gravity is caused by a force of attraction between two masses.
Answer:
Space-time bends due to the masses in the universe.
Choice C is correct
Explanation:
Space-time bends due to the masses in the universe is an idea that Einstein introduced in his theories of relativity.
If a body of any mass is placed down anywhere in the Universe the space around it will curve in response.
The exoskeleton of insects is made primarily of the inorganic material chitin. Which statement below accurately describes a consequence of this feature?
A. Insects must occasionally shed their exoskeleton to grow a new one.
B. The exoskeletons of insects grow along with them throughout their life span.
C. Insects can only grow as large as their hard exoskeletons allow.
D. Adult insects don't have an exoskeleton once they outgrow the one in which they were born.
Answer: A. Insects must occasionally shed their exoskeleton to grow a new one.
Explanation:
In the development process of insects from egg to adult form several intermediate stages occurs. In all immature insects the process of shedding of the skin and the exoskeleton takes place as the insect grows. The exoskeleton of the insect body does not expand as the insect grows it has to get shed and it get replaced with a new and large size exoskeleton. This allows the proper growth of the insect.
Which best describes the relationship between DNA, genes, and chromosomes?
DNA is the basic unit of life. Long sequences of DNA form genes which contain instructions for producing proteins. Even longer strands of DNA are chromosomes which contain many many genes.
Hope this helps!!
Genes make up DNA and DNA makes up chromosomes this describes best the relationship between DNA, genes, and chromosomes.
What explains the relationship between DNA and chromosomes?In the nucleus of every cell, DNA molecules are packaged in a thread-like structure called a chromosome. Each chromosome is composed of DNA that is tightly wrapped around a protein called histone that supports its structure.
Each gene tells cells how to assemble the components of a particular protein. However, genes (DNA) are located in cell (nucleus) compartments that are different from the cell machines that make proteins (ribosomes).
Chromatin is a mixture of DNA and proteins that make up the chromosomes found in cells of humans and other higher organisms. Many of the proteins, histones, package vast amounts of DNA in the genome into a very compact shape that fits in the nucleus of the cell.
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Which statement is correct?
The number of electrons of a neutral atom always equals the number of protons.
The number of neutrons always equals the number of protons.
The number of neutrons always equals the number of electrons.
Atomic weight is identical to atomic mass.
Answer:The number of electrons of a neutral atom always equals the number of protons
Explanation:
Answer:
The number of electrons of a neutral atom always equals the number of protons.
witch one is it a,b,c or d
Answer:
b. a higher luminosity
Explanation:
Answer:b
Explanation: becuase it is a powerful luminosity
What are the differences and similarities between moss and grass?
Answer:
so grass is just like the just grass, u see it in fields, ur front/back lawn, basically everywhere, and moss is kinda like grass but stuck in like a ball sometimes, or grass just in the form of a ball and kinda squishy, or u see it stuck to the top of rocks sometimes, it's like a type of fungus, emphasize the word like
(NEED HELP FAST) The amount of energy required to break a nucleus into individual protons and neutrons is called
A)mass-energy equivalence
B)mass defect
C)binding energy
D)mass-energy conservation
Answer:
The answer is C
Explanation:
The amount of energy required to break a nucleus into individual protons and neutrons is called binding energy.
What is atom?
Atoms consist of a positively charged nucleus consisting of protons and neutrons surrounded by a cloud of electrons charged negatively. An atom is any particle of matter at its most basic level which contains at least one proton.
Nuclear binding energy is the energy required to separate an atomic nucleus completely into its constituent protons and neutrons, the energy that would be liberated by combining individual protons and neutrons into a single nucleus.
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Michelle is toilet training her young daughter. The child will probably be most successful with toilet training if Michelle rewards her based on
a) spontaneous recovery
b) respondent behavior
c) a conditioned stimulus
d) successive approximaitons
Answer:
d) successive approximations
Explanation:
Answer:
Option D, Successive Approximations
Explanation:
Successive approximation are series of rewards given to an individual to positively reinforce the behavioral changes in an individual in order to motivate him /her to move towards achieving the final desired behaviour.
In case if Michelle give rewards to her daughter at each steps of the toilet training activity, then she will be inspired/motivated to do her task efficiently and faster.
Hence, option D is correct.
PLS HELP !!!!!! The table below shows the role of different substances during photosynthesis.
Substance Role During Photosynthesis
Glucose Stores chemical energy
Water Combines with glucose to form carbon dioxide
Chlorophyll Traps sunlight
Which of the following statements would correct one of the roles listed in the table?
Glucose combines with carbon to form water.
Chlorophyll reacts with light to produce carbon dioxide.
Water combines with carbon dioxide during photosynthesis.
Chlorophyll stores chemical energy needed for photosynthesis.
The correct statement that should replace the incorrect one in the table is 'Water combines with carbon dioxide during photosynthesis'. This process uses water and carbon dioxide to produce glucose and oxygen under the influence of sunlight and chlorophyll.
Explanation:In the table about the role of different substances during photosynthesis, there is a mistake. The role of water is incorrectly listed. The correct statement should be 'Water combines with carbon dioxide during photosynthesis'. In this process, water and carbon dioxide are used to produce glucose and oxygen under the influence of sunlight and chlorophyll. Glucose is the form in which the energy from the sun is stored, and oxygen is the byproduct of the process.
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What would most likely happen if a person increased the amount of saturated fat in his or her diet?
The person's risk of cardiovascular disease would increase.
The person's risk of cardiovascular disease would decrease.
The person's bad cholesterol would decrease.
The person’s good cholesterol would increase.
Answer:
The person's risk of cardiovascular disease would increase.
Explanation:
saturated refers to all single bonds in the hydrocarbon chain, meaning no kinks in the chain. The hydrocarbon has the most number of carbons it can have, as there are all single bonds. If the hydrocarbon has even one less carbon, there would be kink, and it would be unsaturated and liquid. Our body needs less carbon, so unsaturated fats are better. But having saturated fats means no liquid, rather solid, which means harder for the blood to get to the heart. So your risk would cardiovascular disease would increase
Answer:
a
Explanation:
Where would you most likely find water molecules?
Answer:
You will likely find it in an oxygen atom. (O2)
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Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does this evidence suggest?
A.) Humans and mice share a more recent common ancestor than do humans and fruit flies.
B.) Mice have had more mutations and recombinations during their evolution than fruit flies.
C.) Mice and fruit flies share a more recent common ancestor with each other than with humans.
D.) Fruit flies have had more mutations and recombinations during their evolution than mice.
A
Explanation:
I believe this because there is more of a percentage with mice then fruit flies
Humans and mice share a more recent common ancestor than do humans and fruit flies, suggest about 97.5% of human genes are also found in mice, hence option A is correct.
What is the evolution of humans?According to comparisons of anatomy and genetics, scientists usually concur that, among the living animals in this category, humans are most closely related to chimpanzees.
Each and every other living thing on earth shares the same DNA as humans. They are most closely linked to chimpanzees and bonobos, with whom they share 98.7 percent of their DNA.
Additionally, they have more than 50% DNA in common with produce like bananas and insects like fruit flies.
It is assumed that the last common progenitor of humans and chimpanzees is much more recent than the last common ancestor of humans and plants.
Based on the fact that there are more similarities between humans and chimpanzees than between humans and plants.
Therefore, option A is correct.
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Explain what would happen to the atmosphere in the absence of sunlight. Give two supporting details for your answer and use complete sentences.
Can someone help me with this please.
Answer:
In the absence of sunlight the plants which are dependent on sunlight for making food that is photosynthesis would die.
Also the people will suffer as sunlight is a good source of Vitamin D and in absence of sunlight they will not get it so easily.
Starting billions of years ago, algae lowered the
atmosphere.
levels in the
A. oxygen
B. ozone
C. carbon dioxide
D. methane
Answer:
Starting billions of years ago, algae lowered the
atmosphere.
levels in the carbon dioxide - C.
Algae has been found to have lowered the atmospheric carbon dioxide levels in the environment. Thus, the correct option is C.
What is Algae?In the primitive world, the initially formed organisms such as algae, were found responsible for the production of large amounts of oxygen in the atmosphere. This was possible by the algae present in atmosphere, as they were able to carry out the process of photosynthesis similar to plants, where the food is synthesized in the presence of sunlight, water and carbon dioxide (CO₂), and in return, it generates food and oxygen, on which the organisms are dependent on for their living.
Thus, these algae were responsible for the changes in the atmosphere, by converting carbon dioxide (CO₂) into oxygen and hence lowering the level of carbon dioxide.
Therefore, the correct option is C.
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a blank contains all the instructions that are needed to build an organism
Answer:
protein
Explanation:
Proteins are constructed from an organism's DNA, which the DNA makes the RNA, which makes proteins. These proteins conduct the basic functions for the organism.
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The functional unit of the kidney is the ____
Answer:
The functional unit of the kidney is the Nephron.
Answer:
nephron
Explanation:
How are mitosis and meiosis similar?
The answer is A, they both involve duplicating chromosomes.
The layer of the atmosphere that contains the ionsphere is the blank
Hello There!
This is called the "Thermosphere"
The thermosphere is the biggest part of the Earth's atmosphere. This layer is very important because it protects us on earth from UV radiation. UV radiation is harmful for humans skin and their hair. It is also extremely hard to breathe in this layer because the thermosphere is made up of mostly nitrogen and oxygen.