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Drupady [299]
3 years ago
12

Which of the following statements is true of ribosomes?

Biology
1 answer:
Delvig [45]3 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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In garden pea plants, purple flowers (P) are dominant to white flowers (p), and full pod shape (F) is dominant to constricted po
kifflom [539]

Answer:

The phenotypes are as follows

Purple, full- 9

Purple, constricted- 3

White, full- 3

White, constricted- 1

Genotype of parents are PpFf, each produce the following gametes: PF, Pf, pF and pf.

Explanation:

This is a dihybrid cross involving two distinct genes. One coding for flower color and the other for pod shape. The allele for purple color (P) is dominant over the allele for white color (p) while the allele for full pod (F) is dominant over the allele for constricted pod (f).

In a cross between two heterozygote parents i.e. PpFf × PpFf, each parent will produce the following gametes: PF, Pf, pF and pf. Using these gametes in a punnet square (see attached image) the following 16 offsprings will be produced in a phenotypic ratio: 9:3:3:1

Purple color, full pod- 9

Purple color, constricted pod- 3

White flower, full pod- 3

White flower, constricted pod- 1

7 0
3 years ago
What is the definition of chemical reaction??? I need help
Snezhnost [94]
A chemical reaction is a process in which one or more substances are changed into new substances. 

An example of a chemical reaction is when metal rusts.


4 0
2 years ago
Read 2 more answers
Over the past four decades, researchers have identified many types of ______. Examples include growth factor receptors, transcri
Serhud [2]

Over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

<h3>What are oncogenes?</h3>

These are specific genes in an organism that can cause the formation of cancer. These genes are prone to defects that when activate, signal for a cell to become a tumor. The genes listed in the question are some examples of the types of cells that can be oncogenes.

Therefore, we can confirm that over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

To learn more about oncogenes visit:

brainly.com/question/7310602?referrer=searchResults

6 0
2 years ago
Definition of human rights <br>​
Snezhnost [94]

Answer: a right that is believed to belong justifiably to every person.

Explanation:

3 0
3 years ago
Read 2 more answers
Which of the following characteristics is not attributed to the sympathetic division of the ANS?
guajiro [1.7K]

Answer:

C) It has a long preganglionic fibers

Explanation:

Peripheral nervous system (PNS) is the nervous system that contains nerves and ganglia outside the central nervous system (CNS). PNS is divided into:

  1. somatic (voluntary) nervous system-controls the movements of the skeletal muscles
  2. autonomic (involuntary) nervous system-controls the smooth muscles and glands and thus it is the regulator of the major body functions. It is subdivided into tree groups:
  • sympathetic ("fight and flight") system-responsible for stressful and active situations (but also in normal conditions);contains short preganglionic fibers and long postganglionic fibers.
  • parasympathetic ("rest and digest") system-opposite to sympathetic, responsible for the maintenance of body's activities at rest.
  • enteric nervous system-controls the function of the gastrointestinal tract.

6 0
3 years ago
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