All categories

3 years ago

4. Where is the ribosome located in the cell? What is the essential role of the ribosome

Biology

1 answer:

abruzzese [7]3 years ago

3 0

Answer:

4. Ribosomes are tiny glanular structures that are either floating freely in cytoplasm or are bound to endoplasmic reticulum.

5. Translation.

6. Eukaryotic ribosomes are ten times larger than prokaryotic ones.

7. Not sure about this.But they are necessary for protein synthesis as they assemble amino acids into protein chains.

8. Ribosomal RNA is part of ribosome.These complex structures catalyze the assembly of amino acids into protein chains.They also bind tRNAs and various accessory molecules necessary for proteins.

9. When a ribosome is not working,it disassembles into two smaller units.

Explanation:

You might be interested in

A student does an experiment for a science fair to study whether temperature affects the timing of a cricketâ€™s chirps. The stu

nexus9112 [7]

The frequency of chirps increases as the temperature increases. The correct option is B. The chirps occur closer together as the temperature increases.

-------------------------------

<h2>Available data:</h2>

<h3>Data recorded by the student </h3>

Day Temperature Average time between chirps (sec)

1 21 2. 5

2 22 2. 6

3 23 2. 2

4 24 2. 3

5 25 2. 0

6 26 1. 8

7 27 1. 9

8 28 1. 8

9 29 1. 4

10 30 1. 2

11 31 1. 5

12 32 1. 1

In this experiment the student recorded the time in seconds between chirps.

We can see that as the temperature increases, in general, the time between chirps decreases.

At 21ºC the time between chirps is 2.5 seconds

At 26ºC the time between chirps is 1.8 seconds

At 32ºC the time between chirps is 1.1 seconds

According to this information, if the average time between chirps decreases with the temperature increase, we can assume that the frequency of chirps increases as the temperature gets higher.

<h3>Options,</h3>

A) The higher the temperature, the fewer chirps there will be in 10 seconds.

Wrong. The number of chirps in 10 seconds will depend, not only on the frequency but also on how long the chirps last. Since the student did not record the time of chirps, we can not make this conclusion.

B) The chirps occur closer together as the temperature increases.

True. The chirps increase in frequency as the temperature increases, so they occur closer together.

C) The chirps become farther apart as the temperature increases.

Wrong. We can see how the time between chirps decreases as temperature increases, meaning that they are closer not farther.

D) There is no relationship between temperature and the time between chirps.

Wrong. If we make a graph we will see the tendency and the relationship between chirps and temperature.

Graphs usually explain the relationship between variables. In this example, the relationship would be inverse.

-------------------------------------

You can learn more about

at brainly.com/question/15210301

5 0

2 years ago

Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"? Sel

Mila [183]

Answer:

Cyclic AMP and calcium may be second messengers.

Explanation:

these are signalling molecules that are located inside the cells,They are releases when cells are in contact with signals from an extracellular molecule. the extracellular molecules that cause the chemical reaction in an external environment in the second messenger are called first messenger.

the basic mechanisms of second messenger involve the binding of ligands to the cell membrane receptors( usually a trans membrane protein).causing conformational change in the receptor protein. The latter change affect the structural and functional activities of the receptors protein with a consequent production of second messenger,

Response of the cells to the first messenger my cause different form of cellular reactions; the cells may undergo depolarization with influx of out flux of ions, differentiate to specialized cells or migrate to another location.

Examples of first messenger are hormones and neurotransmitters, while calcium ions, cyclic GMP,AMP, diaclyglycerol are examples of first messengers.

Most first messengers are peptide hormones.Some may be streroid, However, the hydrophilic nature of the peptide hormone restrict their movement, at the cell membranes. Therefore most first messengers made of peptide are first converted to second messenger to bring about their signalling effects.The usually mark the beginning of cascade events by second messengers.

Second messengers are usually classified based on their polarity and molecular form this include the

hydrophobic molecules ;diacyglecerol,phosphatdylinotisols. These diffuse through the membrane into intramembrane space of cells cause signalling effects in the cell.

the hydrophiliic molecules are located in the cystol of cells. Example are Cylic AMP. GMP, Calcium,

N02, CO,H2S are polar molecules that easily diffuse into the cells to cause signalling effects, they are the third Classification of second messengers.

6 0

3 years ago

Read 2 more answers

1. What are the organs of the digestive system?

jeyben [28]

Answer:

1. Esophagus or Oesophagus

2. Stomach

3. Small intestines

4. Large intestine and anus.

The solid organs of the digestive system are:

1. liver

2. Pancreas

3. Gall bladder.

8 0

3 years ago

Humans and baboon have noses with nostrils that face downward, but many other primates have noses with nostrils that face out to

Zepler [3.9K]

Answer:

a shared derived trait.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

Simply stated, a trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her.

Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, weight, handedness, freckles, curly hair, hair color, blindness, complexion, height, etc.

All humans and baboons are created having noses with nostrils underneath i.e facing downwards but other primates such as platyrrhines have their nostrils facing sideways (face out to the side). Also, humans and baboons shared close similarities with each other when compared than they share with the primates having a outward-facing nostrils.

This ultimately implies that, both humans and baboons sharing the downward-facing nostril orientation is an example of a shared derived trait.

A shared derived trait can be defined as a trait or characteristic that is shared between two lineages and subsequently evolves leading up to a clade, which is a distinguishing feature from other species.

4 0

2 years ago

What is usually responsible for an earthquake?

Leokris [45]

Movement in the tectonic plates of the earth's crust

6 0

2 years ago

Read 2 more answers