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Scorpion4ik [409]
3 years ago
8

Which is composed of amino acids and determines all the structures and functions of organisms?

Biology
1 answer:
Katen [24]3 years ago
5 0
Proteins are made of amino acids and they are components in most living things making up there structure.
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Many mutations have been identified in the lac operon. A particular mutation in the CRP gene make the CRP protein bind to the Pl
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Answer:

a. + glucose, + lactose  = On

b. - glucose, - lactose  = Off

c. + glucose, - lactose  = Off

d. - glucose, + lactose = On

Explanation:

Lac operon has both types of control, repressible and inducible.

Whenever glucose level is low in the cell, an enzyme known as adenylyl cyclase raises the level of cAMP which forms a dimer with CRP protein and they both act as activator of lac operon and cause expression.

Apart from this, when lactose is present in the cell, β-galactosidase enzyme metabolizes lactose to form allolactose which causes allosteric repulsion in the lac repressor and causes its removal from the operator. As soon as repressor is removed lac operon gets activated.

In wild type lac operons, the expression of lac operon occurs when glucose level is low in the cell and lactose is present but in this mutant presence or absence of glucose will not make a difference because CRP will bind Plac promoter independent of cAMP level i.e. activator CRP will work even in high glucose concentration. If lactose is present then lac operon will always express so in option 'a & d' lac operon will express but in option 'b & c' it will not express.

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3 years ago
In what ways do you think climate change will impact the water cycle
vampirchik [111]

Answer:Climate change intensifies this cycle because as air temperatures increase, more water evaporates into the air. Warmer air can hold more water vapor, which can lead to more intense rainstorms, causing major problems like extreme flooding in coastal communities around the world

Explanation:

mark me brainlist if this help

plz

hearted 2

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How are cubs raised within a pride
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Freddy understands that if tree a is taller than tree b and tree b is taller than tree c, then tree a is taller than tree
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The right option is transitive inference

Transitive inference is a form of deductive reasoning in which the relationship between items that have not been clearly assessed is derived. Transitive inference gives the ability to conclude that if item A is related to Item B and Item B is related to Item D, then Item A must be related to Item D. From the question given above, the understanding demonstrates transitive inference.






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3 years ago
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