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Natalija [7]
3 years ago
7

6. Ribosomes contain a mixture of ribosomal RNA (rRNA) and ribosomal proteins. In most cases, any particular rRNA or ribosomal p

rotein is represented once in a mature ribosome. Yet each type of rRNA is coded in eukaryotes by more than 100 gene copies per genome, and in contrast ribosomal proteins are single copy per genome (2 copies per diploid individual). Explain how eukaryotes can produce the same number of ribosomal RNAs and ribosomal proteins (needed in 1:1 ratio for ribosomes), given this disparity in gene copy number.
Biology
1 answer:
MArishka [77]3 years ago
6 0

Answer:

This phenomenon occurs because the expression is higher for genes encoding ribosomal proteins in order to balance the number of ribosomal proteins that are present in the cell with the ribosomal RNA level

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List three criteria thomas hunt morgan was looking for in a model organism for genetic studies
KonstantinChe [14]
A model organism is a species that has been widely studied to understand a particular biological phenomena, normally used because they are easy to breed and maintain in a laboratory setting and has certain experimental advantage.
The criteria that Thomas hunt Morgan was looking for include; the model organism should be small in size, easy to keep in the laboratory and also able to produce large number of off springs in a short time.
3 0
2 years ago
Where in the chloroplast does the light reaction and the carbon (dark) reaction of photosynthesis occur?
mr Goodwill [35]

Answer:

Explanation:

This takes place in the stomata.

5 0
3 years ago
As a molecule moves through the plasma membrane it passes through a hydrophobic layer of phospholipid tails then a hydrophilic l
Firdavs [7]

Answer:

"As a molecule moves through the plasma membrane it passes through <em>a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails and then another hydrophilic layer of phospholipid heads".</em>

Explanation:

Biological membranes are formed by two lipidic layers, proteins, and glucans.

Lipids characterize for being amphipathic molecules, which means that they have both a hydrophilic portion and a hydrophobic portion at the same time. These molecules have a lipidic head that corresponds to a negatively charged phosphate group, which is the polar and hydrophilic portion. They also have two lipidic tails that correspond to the hydrocarbon chains -the apolar and hydrophobic portion- of the fatty acids that esterify glycerol.

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Through this lipidic bilayer, some molecules can move from one side of the cell to the other, which happens because of concentration differences. When this occurs, molecules must pass through the hydrophilic layer of phospholipid heads then through the hydrophobic layer of phospholipid tails and then again through another hydrophilic layer of phospholipid heads.              

3 0
3 years ago
The southernmost point to which glaciers advanced in North America is marked by the path(s) of the ____. Question 20 options: Oh
Ilia_Sergeevich [38]

Answer:

Option A,  Ohio River and the Missouri River

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The historical evidences clearly indicate that Ohio River did not exist before the last ice advances. Before Ohio and Missouri river, the major glacier drainage of the east-west direction happens in Teays River. When ice of the glaciers blocked the Teaya river valley, then the Ohio was formed.

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Hence, option A is correct

7 0
2 years ago
Forms of Energy
shusha [124]

Answer:

don't know this one sorry

6 0
2 years ago
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