1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fredd [130]
3 years ago
5

Why does dna matter?

Biology
1 answer:
mrs_skeptik [129]3 years ago
8 0
Because it codes for specific proteins and contains the genetic instructions needed in order for an organism to survive, develop and reproduce
You might be interested in
Proteins, large complex molecules, are major building blocks of all living organisms. Discuss the following in relation to prote
Anastasy [175]

Answer:

Proteins, large complex molecules, are major building blocks of all living organisms. Discuss the following in relation to proteins.

(a) The chemical composition and levels of structure of proteins.

Proteins are chemically macromolecules formed by manomeric units called amino acids. The structural organization of proteins is as follows:  Primary, Secondary, Tertiary and Quaternary.

(b) The roles of DNA and RNA in protein synthesis

From DNA, ribosomal RNA is formed, a type of RNA present in ribosomes that is responsible for protein synthesis. Therefore, the role of DNA in protein synthesis is essential: without DNA, there are no proteins.

(c) The roles of proteins in membrane structure and transport of molecules across the membrane

Proteins can work by transporting ions in different ways.

Explanation:

(a) The chemical composition and levels of structure of proteins.

Proteins are chemically macromolecules formed by manomeric units called amino acids, these have in their structure a carboxyl group and amino group, attached to the same carbon. To be assimilated by the body, proteins must be degraded in the amino acids that make them up.

The amino acids are linked together by peptide bonds. In those bonds, the amino group of one amino acid reacts with the carboxyl group of the other.

The structural organization of proteins is as follows:

Primary: Sequence of the amino acids in the chain with peptide bonds.

Secondary: Spatial arrangement of the amino acids of a protein. They stabilize by means of hydrogen bonds. There are two types: the propeller a and the folded blade b.

Tertiary: Three-dimensional arrangement of the polypeptide chain, stabilized by forces of Waals.

Quaternary: Union of weak bonds of arias polypeptic chains that originate a protein complex.

(b) The roles of DNA and RNA in protein synthesis

RNA fulfills numerous functions, the most important being protein synthesis, in which it copies the genetic order contained in the DNA to use it as a standard in the manufacture of proteins and enzymes and various substances necessary for the cell and the organism. For this, it goes to the ribosomes, which operate as a kind of molecular protein factory, and it does so following the pattern that the DNA prints on it.

(c) The roles of proteins in membrane structure and transport of molecules across the membrane

The cells contain proteins that are embedded in the lipid bilayer of their plasma membranes. These proteins can work by transporting ions in different ways. Then, most of the water-soluble ions and molecules are unable to spontaneously cross the lipid bilayer of the membrane (which act as a barrier) and require the concurrence of special carrier proteins or protein channels. In this way the cell maintains concentrations of ions and small molecules different from those prevailing in the external environment.

7 0
2 years ago
Describe the three types of predation and give an example of each.
uranmaximum [27]
<span>True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive system of the predator. Baleen whales, for example, eat millions of plankton at once. The prey is digested afterward. True predators may hunt actively for prey, or they may sit and wait for prey to get within striking distance. In grazing , the predator eats part of the prey but does not usually kill it. You may have seen cows grazing on grass. The grass they eat grows back, so there is no real effect on the population. In the ocean, kelp (a type of seaweed) can regrow after being eaten by fish.</span>
3 0
2 years ago
____________________ laundry trays do not provide a smooth, and sanitary surface, which is no longer permitted.
Alik [6]
The answer is concrete laundry trays.
This is because as concrete trays ages with timeit becomes coarse and rugged due to water, soap and detergents. Their smoothness gradually fades with time, thus this makes it not as good regarding to health wise standards of living.
5 0
2 years ago
Which statement illustrates bias in scientific research?
PilotLPTM [1.2K]

Answer:

D. An ecologist publishes data funded by a construction company which supports their original hypothesis that an endangered animal's territory is not endangered.

Explanation:

:)

7 0
2 years ago
In the five-kingdom classification system, all prokaryotes belong to the kingdom Monera. Which of the following best explains a
dsp73
<span>I think it is B. Unlike Eubacteria, Archaea are capable of surviving in extreme environments.</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is an example of an endothermic process?
    6·1 answer
  • Plz help me on my biology vocabulary
    14·1 answer
  • Carlos is a healthy but sedentary college student. he weighs 175 pounds. about how many grams of protein should he consume each
    14·1 answer
  • 3 mutations frameshift mutation how im going to remeber this meaning answer
    9·1 answer
  • Which ecological unit exists as an interdependent system made up of the physical environment and a living community functioning
    13·1 answer
  • Cquired immunity involves both a humoral immune response and a cell-mediated immune response. To review the definitions of these
    7·2 answers
  • A homozygous red flower is crossed with a homozygous white-flowered what are the expected phenotypes of The offspring
    7·1 answer
  • Can i get help on these 2 questions ? thank you !
    9·1 answer
  • Explain how Punnett squares are set up
    11·1 answer
  • Compare &amp; contrast capsids and envelopes of viruses.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!