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Dennis_Churaev [7]
3 years ago
8

Which shows a correctly paired dna molecule

Biology
1 answer:
Anna007 [38]3 years ago
5 0
There are 4 nucleotides in DNA molecules: guanine (G), cytosine (C), adenine (A), and thymine (T).

Guanine and cytosine bind together (G-C), and adenine and thymine bind together (A-T). These are the only two possible binds in a DNA molecule.

Answer A has a guanine and adenine bond (G-A), which is impossible.
Answer B has a cytosine and cytosine bond (C-C), which is impossible.
Answer D has a cytosine and thymine bond (C-T), which is impossible.

Through the process of elimination, the answer is C.
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What are 3 ways carbon gets to the surface of the ocean
sergiy2304 [10]

Answer: By the rain, the animals that live in the ocean, and in the air.  

 

Explanation:

The ocean plays an important part in the carbon cycle. Overall, the ocean is called a carbon ‘sink’ because it takes up more carbon from the atmosphere than it gives up.

 

 

Antarctic phytoplankton  

Antarctic phytoplankton, Fragilaria kerguelensis (large group), Nitzschia sp. (single small cell on the left) and partial cell of Thalassiosira sp.  

Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. Some of the carbon dioxide stays as dissolved gas, but much of it gets turned into other things. Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter. Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons. Other chemical processes create calcium carbonate in the water. The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.

4 0
3 years ago
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Living organisms contain many complicated molecules. Which of these is a reason that carbon is important in these molecules? A.
Alex17521 [72]
D....carbon can also form triple and quadruple bonds
7 0
4 years ago
Hich two phrases in this passage point to the meaning of the word stealthily?
Nonamiya [84]

Answer:

B and E

Explanation:

Because thats what stealthy means

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3 years ago
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Explain the role of nitrogen and varbon dioxide in human beings.​
Ivanshal [37]

Answer:

Introduction

Carbon is a very important element to living things. As the second most common element in the human body, we know that human life without carbon would not be possible. Protein, carbohydrates, and fats are all part of the body and all contain carbon.

Carbon occurs in many forms on Earth and is found throughout the environment (Figure below). The element moves through organisms and then returns to the environment. When all this happens in balance, the ecosystem remains in balance too. In this section, let’s follow the path of a carbon atom over many years and see what happens.

Explaination:When your body breaks down food to produce energy, you break down protein, carbohydrates, and fat, and you breathe out carbon dioxide.

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Which characteristic is not shared by land plants and at least some species in kingdom protista?
Lapatulllka [165]

Answer:

Multicellularity Cellular

wall made of cellulose

Chlorophyll

Mobility in mature individuals

Explanation:

Multicellularity is because they have multiple cells in their conformation.

The cellulose wall that forms them usually provides the function of protection, maintenance of osmolarity, among others.

On the other hand, chlorophyll is what makes them independent individuals at the time of feeding, and in this way they have the necessary energy that consists of motility, which is a transport mechanism.

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3 years ago
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