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Arisa [49]
3 years ago
15

Genes can be turned on or turned off; not all genes are active at one time. True False

Biology
1 answer:
SVETLANKA909090 [29]3 years ago
3 0
I think True, sorry if i'm incorrect :(
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What term best describes the following organism: the so-called blue-green algae, they are photosynthetic bacteria; producing oxy
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Answer:

The correct answer will be option E.

Explanation:

The features given in the question are the characteristics features of the group of bacteria belonging to Cyanobacteria.

These Cyanobacteria are the prokaryotes which are capable of synthesizing the food through a process called photosynthesis. These bacteria use sunlight as their energy, use water and air to synthesize food. They under anaerobic condition synthesize the nitrogen in special structures called heterocyst, a characteristic feature of cyanobacteria.

Thus, the features given in the question are:  

1. contain photosystems to carry out photosynthesis.

2. producing oxygen

4. contain phycobilins

6. Hetrocysts: nitrogen-fixing structures.

7. The ancestor of plant chloroplasts.

Thus, option E is the correct answer.

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