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Morgarella [4.7K]
2 years ago
9

Describe the structure and make up of DNA​

Biology
1 answer:
Sauron [17]2 years ago
5 0

Answer:

DNA structure DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).

Explanation:

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sun, salmon, maple trees, bears, plankton, whales, grass, cows, humans, shrimp, caterpillars, finches (small birds), hawks
Iteru [2.4K]
Yes, they are all living things that exist in our world. 
6 0
2 years ago
The process by which the organisms that are better adapted to the environment survive and reproduce is called
aleksley [76]

Answer:

Natural selection

Explanation:

5 0
2 years ago
Read 2 more answers
"Tryptophan self-controls its synthesis." Justify this statement.
miskamm [114]
Just say we have a big amount of tryptophan in the sense that it exceeds, tryptophan would act as a co-repressor which prevents synthesis of more enzymes for its production

Hope this helps :)
6 0
3 years ago
miRNAs can control gene expression by what action?A. degrading proteins as soon as they are formedB. inhibiting the catalytic ac
levacccp [35]

Answer:

C) binding to mRNAs and degrading them or blocking their translation

Explanation:

<u>miRNAs:</u>

miRNAs is the abbreviation of MicroRNAs. These are the small noncoding RNAs of ∼22 nucleotides which can not code for peptides. miRNAs are responsible for gene expression regulation at the level of post transcription. They can do so by forming complementary base pairing with target mRNA and inhibiting their translation.

They silenced mRNA by the following processes:

(1) Cleavage of the mRNA strand into pieces,

(2) stopping mRNA from translation into proteins by ribosomes.

(3) Shortening of mRNA poly(A) tail and destabilizing it.

5 0
3 years ago
Circadian rhythms in constant environments are said to be ________________, and their duration is called the _________________.
mars1129 [50]

Circadian rhythms in stable contexts are referred to as diurnal rhythms, and the free-running period refers to their duration.

The rhythm lasts for roughly 24 hours under continuous circumstances, i.e., perpetual darkness. The Greek letter is used to represent the free-running period, which is the rhythm's time under constant conditions (tau). This criterion's justification is to separate circadian cycles from straightforward reactions to daily environmental inputs.

What exactly is a circadian rhythm?

A circadian rhythm, also known as a circadian cycle, is an internal, naturally occurring process that controls the sleep-wake cycle and occurs roughly every 24 hours. It can refer to any process that is endogenous, or occurring inside an organism, and reacts to its surroundings (entrained by the environment). This 24-hour cycle is driven by a circadian clock, and they have been found in a variety of organisms, including cyanobacteria, fungi, and mammals.

The words circadian, which mean "around," and dies, which mean "day," are Latin words. Diurnal rhythms are more commonly used to describe 24-hour cycles; they should not be referred to as circadian rhythms until endogenous, not environmental, origins can be established.

Despite being endogenous, circadian rhythms are adapted to the local environment by outside factors known as zeitgebers, which include light, temperature, and redox cycles. A circadian rhythm sleep disorder is the term used in clinical settings to describe a disturbed circadian rhythm in humans.

To know more about circadian rhythms :

brainly.com/question/857658

#SPJ4

8 0
2 years ago
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