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Roman55 [17]
2 years ago
5

PLEASE HELP picture above 13 points

Biology
1 answer:
Jobisdone [24]2 years ago
3 0
The first one im pretty sure
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Which of the following describes a choanocyte?
Firdavs [7]

Answer:

D

Explanation:

cause I think thts the answer sorry if I'm wrong

7 0
3 years ago
Differentiation requires __________ of particular genes to produce populations with __________ capabilities that form tissues. d
exis [7]

Answer;

-Inactivation; limited

Differentiation requires inactivation of particular genes to produce populations with limited capabilities that form tissues.

Explanation;

-Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression.

-Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.

-Gene expression plays a critical role in the morphological changes that take place in a developing embryo and fetus and in the differentiation of stem cells to form specialized cells.

8 0
3 years ago
Genetic diversity is ultimately/mainly the result of _______________
RUDIKE [14]

Answer:

A. meiosis.

Explanation:

Meiosis is one of the two major types of cell divisions in living organisms. Meiosis is the process by which four daughter cells that are genetically different from the parent cell are produced. Meiotic process is carried out solely during sexual reproduction to yield gametes or sex cells.

The gametes have their chromosomal number reduced by half during the process. However, one immense importance of meiosis is that it PROMOTES GENETIC DIVERSITY. A process called crossing over, which is the exchange of chromosomal segment between non sister chromatids, makes this possible.

7 0
2 years ago
A food chain contains oak trees (producer), mice (herbivore), black rat snakes (carnivore), and bald eagles (carnivore). How man
VMariaS [17]

Answer:

It has 4 trophic levels.

Explanation:

The first level would be the producers, followed by the primary consumers, then the secondary consumers, then the tertiary comsumers.

              /    Tertiary consumers          \

           /   Secondary Consumers           \

        /    Primary Consumers                     \

     /           Producers                                   \

 /________________________________\

5 0
3 years ago
The most common danger related to the destruction of CD4 T cells is
miss Akunina [59]

Answer:

AIDS

Explanation:

AIDS is the most common infectious disease causing lymphocytopenia, which arises from destruction of CD4+ T cells infected with HIV.

4 0
2 years ago
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