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Drupady [299]
2 years ago
12

Which of the following statements is true of ribosomes?

Biology
1 answer:
Delvig [45]2 years ago
7 0

Answer: A) They are the site of protein synthesis.

Explanation:

Ribosomes are small round organelles attached to the endoplasmic reticulum in cells, and serve as site of protein synthesis. This is possible because the transfer RNA assembles amino acids to form polypeptide chains right in the ribosomes.

Thus, ribosomes are site of protein synthesis

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What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts? a synerg
ser-zykov [4K]

Answer:

The correct answer will be option-a synergist

Explanation:

In the musculoskeletal system, the muscles to produce a movement work in group or pairs like hamstrings and quadriceps or biceps or triceps.  The muscles which work is known as an agonist or prime mover.

The muscle which helps prime mover by moving in the same direction and at the same time is known as synergists. The synergists produce a similar motion as the prime mover and also stabilizes the joints which hold the position for smooth movement of agonist.

Thus, synergist is the correct answer.

T

8 0
2 years ago
Human blood types are characterized by the presence absence of surface markers known as a tigers on the surface of red blood cel
zalisa [80]

Answer:

characterized by presence or absence of antigens

the blood types are A, B, O, AB

Explanation:

There are two antigens and two antibodies that are mostly responsible for the ABO types.  The specific combination of these four components determines an individual's type in most cases. Erythrocytes and serum were related to the presence of antigens on these erythrocytes and antibodies in the serum. these antigens  are A and B, and depending upon which antigen the erythrocytes express, blood either belonged to blood group A or blood group B. A third blood group contained erythrocytes that reacted as if they lacked the properties of A and B, and this group was later called "O" blood group. The fourth blood group AB, was added to the ABO blood group system. These erythrocytes expressed both A and B antigens.

Blood group   Antigen present on RBC    Antibodies in serum    Genotype(s)

      A                        antigen A                             anti-B                     AA or AO

      B                        antigen B                             anti-A                     BB or BO

      AB              both A and B antigen                 none                         AB

      O                           none                           anti-A and anti-B           OO

4 0
2 years ago
The broadest way to classify the nervous system is to differentiate between the ______ nervous systems.
ankoles [38]

Answer:

Central and Peripheral

Explanation:

The nervous system is divided into two parts: the central nervous system and the peripheral nervous system. The central nervous system includes the brain and spinal cord.

On the other hand the peripheral nervous system includes all of the nerves that branch out from the brain and spinal cord and extend to other parts of the body including muscles and organs. Each part of the system plays a vital role in how information is communicated throughout the body.

The below diagram provides a schematic view of the role of each sub-division  of the Nervous System.

4 0
2 years ago
Heavy rains and mudslides cause a river to change course, isolating two groups of lizards from one another. If they remain isola
Stells [14]

If they remain isolated for a long period of time, the two groups will probably diverge genetically, and may result in speciation.

Genetic divergence is the process whereby two groups of the same ancestral species acquire autonomous genetic changes through time, usually after the groups have been separated reproductively for some period of time.

Speciation is an evolutionary process whereby populations develop to become different species.

3 0
2 years ago
A land-dwelling organism, A, and an aquatic single-celled organism, B, are represented below.
Sergio039 [100]

Using the image that represents the land-dwelling organism and an aquatic single celled organism. The statement that best explains how A and B are able to survive in their environments is…


Answer: A) The organelles in B perform similar functions to the organ systems in A.


Please see image attached to better understand how we arrived to the conclusion.


<span>I hope it helps, Regards. </span>

8 0
1 year ago
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