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Anit [1.1K]
3 years ago
10

When translating secretory or membrane proteins, ribosomes are directed to the ERmembrane byA) a specific characteristic of the

ribosome itself, which distinguishes free ribosomes from boundribosomes.B) a signal-recognition particle that brings ribosomes to a receptor protein in the ER membrane.C) moving through a specialized channel of the nucleus.D) a chemical signal given off by the ER.E) a signal sequence of RNA that precedes the start codon of the message.B
Biology
1 answer:
Yuliya22 [10]3 years ago
6 0

Answer:

B) a signal-recognition particle that brings ribosomes to a receptor protein in the ER membrane.

Explanation:

Each synthesized protein has to be targeted to the specific location and transported to that location. There are two possible ways for that transport: post-translational transport or co-translational transport.

• Co-translational transport occurs during the process of translation, and proteins transported this way are proteins bound for organelles in the endomembrane system (such as the ER, Golgi apparatus, and lysosome), plasma membrane proteins or proteins for the exterior of the cell. They have an amino sequence called a signal peptide which sends them to ER first.

• Proteins that do not have a signal peptide stay in the cytosol so, their transport is after the translation (post-translational).

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Jonathan used the following soil triangle to identify a sample of soil as sandy clay.
sineoko [7]

The description of soil according to Jonathan is as follows:

  • Mostly large grains, with a gritty texture, 45% sand, 5% clay, and 45% silt ---- Silty loam soil.
  • Mostly large grains, with a sticky texture, 55% sand, 40% clay, and 5% silt ----- Sandy clay soil.
  • Mostly small grains, with a sticky texture, 30% sand, 50% clay, and 20% silt ----- Clay soil.
  • Mostly small grains, with a smooth texture, 30% sand, 5% clay, and 65% silt ----- Silty loam soil.

<h3>What is Soil Texture?</h3>

Soil texture may be defined as a classification of soil on the basis of its physical appearance, texture, and properties.

In this question, the texture and composition of other soil are illustrated briefly with respect to each common soil type.

Therefore, it is well described above.

To learn more about Soil texture, refer to the link:

brainly.com/question/946875

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6 0
2 years ago
A cell has 36 chromosomes. After it divides by mitosis, how many chromosomes will be in each cell?
butalik [34]

Answer:

36 chromosomes in each cell

Explanation:

Mitosis is an equational division which means that it does not reduce or change the number of chromosomes in the daughter cells. Mitosis in a single parent cell produces two daughter cells each having the same DNA content and the number of chromosomes is present in the parent cell. Each chromosome after the S phase has two sister chromatids that separate from each other and are segregated to the opposite poles of the cell during anaphase of mitosis. Therefore, a cell with 36 chromosomes will form two daughter cells after one round of mitosis. Each daughter cell would have 36 chromosomes.

7 0
3 years ago
Read 2 more answers
Dodder is a parasitic plant, which has roots for support and absorption of nutrients from the host plant. what kind of roots are
devlian [24]
Dodder is a parasitic plant which has A. HAUSTORIAL ROOTS for support and absoption of nutrients from the host plant.

Dodder can not live alone. It grows from a seed and sprout from the ground but if it does not find a host within 10 days, it will die.

When the Dodder finds its host, it twines itself in a counter-clockwise direction around the stem of its host. The Dodder stem has bumps called "haustoria". These bumps are tightly pressed against the stem of the host plant and said bumps will eventually push their way inside the hosts' stem to pull the nutrients it needs to survive to the detriment of the host plant.

Dodder plant may be parasitic but it does not kill its own host instead it causes the growth of the host to be stunted.
5 0
3 years ago
Thailand has the highest percent of vulnerable forest.<br><br> A. True<br> B. False
ad-work [718]

The answer is f good luck

6 0
4 years ago
dogs once covered the expanses of the Great Plains. Their grazing made the grass more nutritious for the huge herds of bison, an
AysviL [449]

Answer:

The correct option is D, that is, THEIR FUNDAMENTAL NICHE HAS BEEN COMPROMISED.

Explanation:

From the information given in the question, we are told that the expanses of the Great Plains, which was once occupied by the prairie dogs have been reduced in size due to increased housing and agricultural developments. This implies that, the habitat, which is natural to the prairie dogs has been reduced in size, in another word, their fundamental niche has been compromised.                                                                                                                                                      

6 0
3 years ago
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