BIOLOGY HIGH SCHOOL

Which of the following statements best describes chromosomes?a. Humans have more than 460 chromosomes in every cell of the body.
b. Chromosomes are threadlike structures that carry genetic information.
c. Humans receive the majority of their chromosomes from their mother.
d. Chromosomes are arranged in 20 distinct pairs in the human body.

Answers

Answer 1
Answer:

Answer: its B actually

Explanation:
Answer 2
Answer:

Answer:

B: Chromosomes are threadlike structures that carry genetic information.

Explanation:

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Which of the following is not found in bacteria? Which of the following is not found in bacteria? control of chromatin remodeling transcriptional control control of chromatin remodeling, RNA splicing, and transcription control of both RNA splicing and chromatin remodeling control of RNA splicing

Answers

Answer:

Control of both RNA splicing and chromatin remodeling control of RNA splicing.

Explanation:

RNA is present as genetic material but in case of some viruses only. RNA contains the nitrogenous base ( adenine, guanine, uracil and cytosine), oxyribose sugar and phosphate group.

The bacteria do not have well developed nucleus so no chromatin remodification occurs in case of bacteria. Bacteria is devoid of introns and contains only exons in its RNA structure. The splicing process is not required in case of bacteria.

Thus, the correct answer is option (4).

Which statement best describes a human influence on the biogeochemical cycles?increased eutrophication caused by high levels of nitrogen and phosphorousincreased nitrates available due to inaccurate methods of denitrificationincreased global warming due to alternative energy sources
increased amount of water that is available to freshwater ecosystems

Answers

The best statement would be increased eutrophication caused by high levels of nitrogen and phosphorous. Nitrogen and phosphorous are found in fertilizers. These fertilizers are used by farmers in croplands. Excess use of these might lead for the excess amounts to run off to water bodies which may cause eutrophication. Therefore, altering the nitrogen and phosphorous cycles.

Any change or random error in a DNA sequence

Answers

Any change or random error in a DNA sequence is called a mutation.

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Answers

3. The product should use the least sig figs of the two numbers.
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B.Living organisms create order by using energy from the sun.
C.Living organisms create order locally, but the energy transformations generate waste heat that increases the entropy of the universe.

Answers

Answer:

C.Living organisms create order locally, but the energy transformations generate waste heat that increases the entropy of the universe.

Explanation:

Entropy is a concept of thermodynamics that measures the disorder of particles in a physical system. Living organisms create some disorder through reactions that generate waste heat so that through heat-shaped energy, organelles capable of generating macromolecules, organelles, cells, tissues, and higher-order complex structures are ordered.

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Answers

Of course they can! They almost all the time do

Answer:

The competitive exclusion principle tells us that two species can't have exactly the same niche in a habitat and stably coexist. That's because species with identical niches also have identical needs, which means they would compete for precisely the same resources.

Explanation:
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