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katen-ka-za [31]
3 years ago
6

Explain how natural killer (NK) cells are able to determine which cells have been invaded by pathogens, and once detected how do

the NK cells destroy the infected cells. g
Biology
1 answer:
Naya [18.7K]3 years ago
6 0

Answer:

Nk cells can respond to infection either directly or indirectly . They respond directly or indirectly. They respond directly by recognizing virus infected cells and indirectly by interacting with dendlitic cells.

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The various parts of the endomembrane system serve different functions in the cell. In this activity, you will identify the role
Viktor [21]

Answer:

A) Lipid synthesis : Smooth endoplasmic reticulum.

B) Calcium ion storage : Smooth endoplasmic reticulum.

C) Poison detoxification : Smooth endoplasmic reticulum.

D) Protien synthesis : Rough endoplasmic reticulum.

E) Protien modification and sorting : Golgi apparatus

F) Cisternal maturation : Golgi apparatus.

G) Macromolecule digestion : Lysosomes

H) Autophagy : Lysosome.

Explanation:

<u>Smooth endoplasmic reticulum</u> is involved in the synthesis and storage of lipids . It also stores the calcium ions and contain enzymes responsible for the detoxification of the poisonous substances like CCL4 and other agents. SO the answer of A , B  and C is Smooth endoplasmic reticulum.

<u>Rough endoplasmic reticulum</u> contains ribosomes which synthesize protiens thus answer of D is RER.

The <u>Golgi apparatus</u> functions as a factory in which the protiens recieved from the endoplasmic reticulum are modified and sorted and is also involved in cysternal maturation so answer of option E and F is Golgi apparatus.

<u>Lysosomes</u> are the part of endomembrane system involved in the digestion of the macromolecules and in the recycling of the worn-out organelles hence also involved in autophagy. Hence answers of G and H is lysosomes.

7 0
4 years ago
How did the formation of the ozone layer contribute to the existence of life on Earth?
guapka [62]
It blocked the suns harmful UV rays
7 0
4 years ago
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Squirrels and chipmunks compete for the same food source. What is most likely to happen to the degree of competition between the
kkurt [141]
<span>The right answer is "increase". On the off chance that there's less food for them to eat,, they are going for a battle for it more on the grounds that both will need the little measures of nourishment that they scarcely get. The opposition increments.</span>
7 0
3 years ago
Read 2 more answers
A ball is projected into the air. Describe the change(s) in potential and kinetic energy.
katen-ka-za [31]
D. Kinetic energy decreases as potential energy increases
3 0
3 years ago
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Select one of the following to describe: convergent boundary, divergent boundary, or transform boundary. Describe the boundary y
pychu [463]

Divergent Boundary:

A divergent boundary is a linear feature that includes two tectonic plates moving <em>away </em>from each other. When plates separate, it allows molten lava to seep through and spill over, creating new crust where the previous tectonic plates existed. Divergent boundaries are mostly found in the ocean floors.

Hope this helps!!

5 0
4 years ago
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