5. Which of the following sequences is an example of a point mutation of the DNA sequence -A-A-G-T-G-C-? -A-A-A-T-G-C-
-A-A-G-U-G-C
-G-T-A-G-A-A-C-
-A-A-G-G-T-C-

Answers

Answer 1

Answer: -A-A-A-T-G-C- because only one base pair is altered by the mutation

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Humanity adds about 5.5 billion tons of of carbon dioxide per year, most of which goes directly into the atmosphere. What is this doing to the atmosphere?

Why is it necessary to emulsify the colony in a drop of sterile water?

Answers

Answer:

It is essential to placing or added a drop of sterile water or saline

Explanation:

Regions of biomes that are an inconsistent mixture of fresh and salt water include ______. Select one: a. ponds b. lakes c. streams d. estuaries

Answers

D. Estuaries

Estuaries are a place where fresh and salt water mix.

A virus is referred to as a particle rather than a cell because structurally it is a A) RNA core in a carbohydrate envelope. B) nucleus surrounded by a protein coat. C) plasmid of DNA surrounded by a capsid. D) RNA or DNA core surrounded by a protein coat.

Answers

The correct option is D.

A virus refers to an infectious micro organism that is made up of nucleic acid molecule that is enclosed within a protein coat. Viruses are only able to reproduce and multiply when they come in contact with living cells, in the absence of living cells they remain dormant and they do not show any sign of been a living thing. The nuclei acid molecule of a virus can be in form of a DNA molecule or a RNA molecule.

Answer: The answer is D/RNA or DNA core surrounded by a protein coat.

Explanation: One reason a virus is considered to be a particle rather than a cell is because structurally it is only a RNA or DNA core surrounded by a protein coat. It has none of the other features of bacterial cells.

The study of animals' structures, behaviors, functions, and evolution is called _____. ethology zoology biology physiology

Answers

Answer:

The correct answer is option B, Zoology

Explanation:

Let’s look at the definition of each term one by one –

a) Ethology – Ethology deals with the study of animal behaviour and the evolutionary factor that led to the development of such behaviour in any organism.

b) Zoology – It is the study of animals and their nature, physiology, genetic history, evolutionary pattern and behaviour.

c) Biology – It deals with the study of all sorts of living organisms.

d) Physiology – It deals with the physical functioning of the organism and their parts.

It is the zoology that includes study of every thing about animals i.e anatomy, behavior, physiology, evolutionary pattern etc. Thus option B is correct.

the answer is zoology because zoology is the study of animals and thier behaviors, envrionments, and etc.

When soil first forms over bare rock, what is it made of?

Answers

Soil is formed by the process of weathering. The soil is the uppermost layer of the surface of Earth. The first formed soil contains pieces of rocks and other particles.

What is Soil?

Soil is the uppermost thin layer of material covering the earth's surface. It is formed from the weathering of large rocks. It is made up of mineral particles, organic materials, air, water and living organisms like bacteria.

The lichens are the pioneer species which invade the bare rocks and convert them into soil. They secrete acids which dissolve the rocks. This helps in their weathering and formation of soil. Mosses grow on the rocks along with the lichens to form a mat over the substratum.

Under the action of factors like heat, cold, rain, wind, and other atmospheric factors, the rock breaks down physically into the parent material of the soil.

Learn more about Soil here:

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Answer:

Explanation:

Weathering and erosion produce ever smaller rock particles which,

when mixed with dust and decayed organic matter over time ,

result in different types of soil .

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