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Romashka-Z-Leto [24]
2 years ago
7

How does Mike's mom compare the nuclear membrane and the cell membrane?

Biology
1 answer:
xenn [34]2 years ago
8 0

Answer:

A. Both the cell membrane and nuclear membrane are protective coverings. B. The cell membrane is like a blanket, while the nuclear membrane is like a sieve.

Explanation:

Brainliest please?

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The immune response requires a team effort. How do the specific and non-specific defenses work together? EXPLAIN YOUR ANSWER.
kotegsom [21]

A non-specific immune response (also called immunity) is antigen-independent while a specific immune response is antigen-dependent. The examples of the non-specific immunity are fever, phagocytosis by macrophages, skin and mucus.  The example of the specific immune response is cytotoxic T-cells able to recognize antigens on infected cells and kill them before the infection could spread.

6 0
3 years ago
You study a bacterium that grows in very low-nutrient aqueous environments. Which type of transport mechanism is required to del
saveliy_v [14]

Answer:

B. active transport

Explanation:

When a substance is to be transported from the area of its lower concentration to the area of its higher concentration, energy is consumed. The process is called active transport as it uses energy to move molecules against the concentration gradient. Membrane transport proteins such as pumps are involved in this type of transport. Therefore, the given bacterium needs to use the process of active transport to absorb the nutrients from the surroundings.

8 0
3 years ago
Vibrio cholera is a bacterium that causes the diarrheal disease known as cholera. In the 1800s
ArbitrLikvidat [17]

Answer:

''If the old cells inoculated in chicken, it produces resistance in the chicken against new V. cholera cells.''

Explanation:

From the data provided by Louis Pasteur, we make a hypothesis i. e. ''If the old cells inoculated in chicken, it produces resistance in the chicken against new V. cholera cells.'' From these observation we can assume that by allowing old V. cholera cells to chicken, it did not cause any disease but make immunity against the new V. cholera cells which are more effective from old V. cholera cells.

4 0
2 years ago
Punnett Squares are used by geneticists to determine the likely genotypes of the offspring of two parents.
PilotLPTM [1.2K]
That's correct - it's a square where on one axis, the paternal allele (allele = one of the possible forms of the same gene), and on another the maternal allele is listed. Often, it's also indicated whether an allele is recessive or dominant.

Then, in the table that results, all the possible "combinations" of allele between the paternal and maternal party are created. If you count how often a certain combination appears, it indicates the likelihood of that combination.
See the picture (though it is directly from Wikipedia, please note). The likelihood of BB is 25%, of Bb is 50%, and of bb 25%.

6 0
3 years ago
Oxygen has an atomic number of 8. The n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. Oxygen
natita [175]
<span>Valence is defined as number of electrons that are present in the outermost orbital. Oxygen is in the 16th column of the periodic table and the total number of valance electrons is determined by units place digit of the column position which is 6 for oxygen. The outermost orbital is the high energy level and there are two in that orbit. So the valance is +2.</span>
4 0
2 years ago
Read 2 more answers
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