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Leona [35]
3 years ago
8

Which of the following best describes the biological role of the lac operon?

Biology
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

D. It ensures that bacterial cells produce lactose only when no other food sources are available.

Explanation:

E. coli uses three enzymes to produce lactose. The genes for these three enzymes are found in lac operon.

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what forms of RNA is responsible for carrying a formed amino to the protein assembly site during translation
aliina [53]

Answer:

tRNA is responsible for that

4 0
4 years ago
The graphs below show the changes in crab color at one beach.
vazorg [7]

Answer:

C. Both light tan and dark tan body color provided an advantage to the crabs on this beach, but not necessarily in other crab habitats.

Explanation:

The changes in the number of light tan and dark tan body color of crabs that occured can be described as a diversifying or disruptive selection.

This disruptive selection occurs when individuals with extreme traits on both ends of the spectrum become selected against individuals of ntermediate or medium traits.

In the case of the crab, their environment favors the selection of both extreme values as against those intermediate individuals, as both light tan and dark tan body color of the crabs gives them advantage over others in this particular environment. This may only be obtainable in this environment or similar beach environment with the same settings and conditions.

3 0
3 years ago
Which statement accurately describes a relationship between two parts of the universe?
Veseljchak [2.6K]

The statement '(a) there are billions of galaxies in a galaxy cluster' accurately describes a relationship between two parts of the universe.

<h3>What is the solar system?</h3>

The solar system can be defined as a group of billions of galaxies that form a cluster due to gravitational forces that maintain all these celestial bodies linked together. This system contain our Sun.

In conclusion, the statement '(a) there are billions of galaxies in a galaxy cluster' accurately describes a relationship between two parts of the universe.

Learn more about galaxy clusters here:

brainly.com/question/955851

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8 0
2 years ago
Help!!!
Ymorist [56]

Answer:

its option A. bright tail feathers of peacocks during breeding season

Explanation:

4 0
3 years ago
Homeostasis is maintained by which of the following organ systems in humans?
a_sh-v [17]

A. Multiple organ systems working together

Explanation:

All of the organ systems work together to maintain homeostasis in humans because each system does something different. For example, the circulatory system delivers oxygen rich blood to the bones and the bones create new blood cells. When one thing is wrong with one system, it affects all of the systems, like a disease. Another example of this would be the central nervous systems and endocrine working together to coordinate messages to the brain about the body's state while resting and exercising to maintain homeostasis.

5 0
3 years ago
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