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Reil [10]
2 years ago
15

Ribosomes are frequently found on the rough ER just outside of the nucleus. Suggest two reasons that the ribosomes may be found

here.
Biology
1 answer:
ollegr [7]2 years ago
3 0

Answer:

Ribosomes are present attached to the rough ER:

1. To easily make proteins that are required inside and outside of a cell.

2. To take up amino acids easily.

3. To make it easier for the mRNA to travel from the nucleus to the ribosomes.

Explanation:

Ribosomes are involved in the synthesis of proteins. The rough endoplasmic reticulum is attached to the nuclear envelope. Hence, this provides an easy pathway for molecules to travel between the nucleus, rough ER and endoplasmic reticulum.

During the formation of a protein, mRNA is formed and the mRNA travels to the ribosomes through the rough ER. The location of the ribosomes makes it easy to take mRNA from the nucleus and amino acids from the cytoplasm and make proteins. When a protein is made, it can be used inside the cell or can be transported to the Golgi apparatus etc.

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When taken to a new habitat, non-native plants often threaten native plants of the new habitat and reduce biodiversity. Why do t
Lynna [10]

Answer: non-native plants compete with native plants for resources

Explanation:

Just took the quiz ;)

5 0
2 years ago
The highlighted structure separates the oocyte from the externally located ________. zona pellucida primary follicle corona radi
Naya [18.7K]

Answer:

Granulosa cells                          

Explanation:

Foliculogenesis is a dynamic and complex process through which the follicle goes through many stages of development in a short period (approximately 60 days in humans and some chimpanzees).

The stages classification is based on morphological changes such as follicular size or diameter, the number of follicular cell layers, etcetera. These classifications might vary among authors but could be denominated as:

  • Primordial follicle
  • Primary follicle
  • Secondary follicle and
  • De Graaf follicles (This is the one shown in the image)

Through each stage, there are certain modifications in the oocyte, follicular cells, and connective tissue. As the oocyte grows, the follicular cells might reach a size twice or three times bigger than the ones of the primordial follicles. Their shape also changes and they adopt an aspect of stratified epithelium. Their cytoplasm gets a granulous aspect, after what these cells receive the name of <u><em>granulous cells</em></u>. The De Graaf follicle characterizes for having a space named follicular antro that displaces the oocyte to one of the sides.    

The oocyte at this point gets surrounded by <u>zona pellucida</u> and <u>corona radiata </u>.    

The follicular antro (The highlighted structure) separates the oocyte from the externally located <u>granulosa cells</u> or follicular cells.    

7 0
3 years ago
Prochlorobacteria are primitive, photosynthetic bacteria that are used in the manufacture of dairy products.
lesya692 [45]

Answer:

(b) - False

Explanation:

Prochlorophyte bacteria are photosynthesizers and have the same chlorophyll found in algae and vegetables, studies claim that these bacteria are the most abundant beings on the planet, accounting for half of all photosynthesis performed in the oceans.

Prochlorophyte bacteria can be divided into <em>Prochloron</em>, <em>Prochlotrix</em> and <em>Prochlorococcus</em> genera.

However, <u>prochlorobacteria</u> are not responsible for the production of dairy products, in which the most associated bacterial genera are <em>Lactobacillus</em> and <em>Streptococcus</em>. This last statement implies that alternative b is the correct one.

4 0
3 years ago
Suppose that an arginine residue in the active site of an enzyme was mutated to alanine. As expected, the alanine mutant was ina
Makovka662 [10]

Answer:

Alanine to lysine.

Explanation:

Mutation may be defined as the sudden, heritable change in the genome sequence of an organism. Two main types of mutation are chromosomal mutation and point mutation.

The mutation has occurred in which the arginine is replaced by alanine. The mutation that can restore to wild type is the conversion of alanine with lysine.    Since both arginine and lysine are basic amino acids. They both shows almost similar function and the replacement of lysine with alanine shows the wild type activity.

Thus, the answer is alanine to lysine.

5 0
3 years ago
The organs of vascular plants consist of layers of specialized ___.
stellarik [79]

Answer:

Tissues

Explanation: hope this helps :)

3 0
3 years ago
Read 2 more answers
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