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fgiga [73]
2 years ago
9

Which of the following cells shows the presence of a nucleus? A.)Prokaryotic cell B.)Eukaryotic cell C.)Both prokaryotic and euk

aryotic cell NextReset
Biology
2 answers:
e-lub [12.9K]2 years ago
8 0
I would say the answer is B
elena-s [515]2 years ago
3 0
Eukaryotic Cells show presence of nucleus.
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Macrophage cells undergo a process called phagocytosis in which material is brought into a cell in the form of membrane vesicles
Naddik [55]

The correct answer is: A. minus end; dynein

Microtubules are cytoskeletal fibers that have an important role in the intracellular transport (movement of vesicles within the cell) and in the mitotic spindle during mitosis. The plus end of the microtubules extend through the periphery of the cells while the minus ends are anchored within the centrosome.

Necessary proteins for the vesicle’s movement are motor proteins:

• kinesin  which is positive end directed

•  dynein which is negative end directed

So, beside vesicles these proteins are also involved in organelles’ transport in opposite directions through the cytoplasm.

4 0
3 years ago
What makes a plant green?
abruzzese [7]
The green pigment chlorophyll
6 0
3 years ago
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Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the afrikaner population of south a
IgorLugansk [536]

This represents the example of founder effect.

The founder effect is a term in genetics that describes the loss of genetic variation as a result of new population formation by a very small number of individuals from a larger population. Small group of migrants (the afrikaner population of south Africa) that is not genetically representative of the larger population (Europe population) forms a new population with lower genetic variation.

7 0
3 years ago
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Carrying the genetic code and determining an organism's structure and function are the functions of
Tom [10]
DNA carry's the genetic code
8 0
3 years ago
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Which of these is a way to increase the availability of freshwater
Nastasia [14]

Answer:

Option A

Explanation:

Options -

A-avoid water pollution.

B-build thermal power plants.

C-add water features to gardens.

D-avoid drip irrigation systems

Solution -

The largest source of freshwater on planet earth is underground water. The water beneath the surface of earth is very limited. The total fresh water reserve on earth is 3% of the total water on earth. Pollution due to discharge of waste water into the rivers and oceans has caused the degradation of not only surface water but also ground water.  

Thus, option A is correct

Drip irrigation is a means to prevent wastage of water during irrigation. Thus, avoiding it will cause further loss of fresh water.  

Addition of water feature will increase usage of water, thus it is also incorrect

Building thermal plant will also cause water pollution and wastage. Hence, option  B is also incorrect

3 0
3 years ago
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