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Sergeu [11.5K]
3 years ago
11

1. Adaptations and variations show evidence of past

Biology
2 answers:
Nataly_w [17]3 years ago
5 0
It’s evolution I think
Alika [10]3 years ago
4 0

Answer:evolution

Explanation:idk tell me if im wrong

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What types of biological molecules can blood transport safely?
maxonik [38]

Blood refers to a fluid connective tissue that comprises fluid known as plasma, in which the cells of the blood are suspended. The two prime constituents of the blood are formed elements or blood cells and plasma.  

Plasma comprises 50 to 60 percent of the entire volume of blood. It comprises about 91 percent of water, due to which the viscosity of the blood is sustained.  

Plasma conducts platelets and blood cells along with various of other substances, like vitamins, hormones, amino acids, and other nutrients. Due to the hydrophilic property of blood, it can mediate the hydrophilic molecules safely all through the body.  


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3 years ago
You are studying a bacterium that utilizes a sugar called athelose. This sugar can be used as an energy source when necessary. M
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Answer:

The ath operon is most likely controlled by the CAP and a repressor similar to the lac operon.        

Explanation:

The CAP senses the low concentration of glucose and activates the transcription of the ath operon for it to metabolize the athelose and obtain energy. When the glucose is in high concentrations, the ath repressor, which works as a  lac repressor, inhibits the transcription of the ath operon, it does this by binding to a part of the operon called operator getting in the ARN polymerase way and stoping the transcription. If there is glucose, the repressor binds to it and it is not bound to the operon allowing the transcription and metabolism of glucose.                                  

8 0
3 years ago
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Vhy do we treat the cells with soap when conducting DNA extraction?​
Wewaii [24]

Answer:

Dish soap "cuts through grease" because it actually breaks down those greasy molecules. Now, the molecules that make the membranes around cells and the nucleus (which holds DNA) are lipids. So when dish soap is added, the cell membrane and the nuclei are broken apart, releasing the DNA.

Explanation:

brainliest plzz

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3 years ago
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Warren finds an unusual star-shaped creature in the bottom of a tide pool while walking along a rocky beach. Which question abou
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C. It is the most unusual living creature in the area?
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3 years ago
Help i need it pls.<br> This is for half my grade plss help
Verdich [7]

Answer:

I think it is A, B, and C.

Explanation:

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