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2 years ago

The cells that perform immunological surveillance are the ________ cells.

Biology

1 answer:

vlabodo [156]2 years ago

6 0

Answer:

The correct answer is "Natural killer".

Explanation:

Natural killer cells, also known as NK cells or large granular lymphocytes, are cells that have an essential role in the innate immune system. Nk cells perform immunological surveillance, and are important for prevent the growth of tumors and develop chancer. Nk cells are able to recognize targets that are only present in cancerous cells, killing them before they start to proliferate.

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A rock sample has a mass of 16 grams and a volume of 8 cubic centimeters. When the rock is cut in half, what is the volume and d

spayn [35]

Answer:

Volume= 4 cm³

Density= 2 g/cm³

Explanation:

We have the following data:

volume= V= 8 cm³

mass= m= 16 g

The density is the mass per volume of a substance, so the density of the rock is:

density= d= 16 g/8 cm³= 2 g/cm³

When we cut the rock in half, we have a half volume and a half mass:

V= 8 cm³/2= 4 cm³

m= 16 g/2= 8 g

But the density is not altered because it is an intrisic property - it does not change with the amount of subtance. Thus, the density of a half rock is:

d = m/V= 8 g/4 cm³= 2 g/cm³

6 0

2 years ago

Plate Boundaries and Movement lab report Directions Now that the lab is complete, it is time to write your lab report. The purpo

Paladinen [302]

Answer: 1.) You want to answer, possibly, your hypothesis.

2.) If you have a prompt and a claim, write your hypothesis down in this form: If ______________, then________________.

3.) Use the scientific process of performing an experiment, like observation, measurement, etc.

4.) LABEL all the sides of your (bar, line, etc) graph.

5.) Write a sentence using your graph in this form:

It (increased/decreased)_________ because _________.

This value is the (greatest/least) __________ because ___________.

6.) Explain why or why not the hypothesis supported your observations and measurements.

My hypothesis (did/didn't) support my experiment because ____________.

7.) In other words, how does your graph, observations, etc., go along with your hypothesis?

Hope this helps.

3 0

2 years ago

Read 2 more answers

A 1cm diameter, 6 cm long core is removed from a carrot. The resulting hole is filled with corn syrup, and a glass tube is inser

LiRa [457]

✿━━━━@♥ℳg━━━━✿

<h2> $\boxed{Explained\:Answer}$ </h2>

______________________________

✿━━━━@♥ℳg━━━━✿

■Here,The corn syrup is hypertonic to the carrot, so will take water from the adjoining cells, causing those cells to shrink, become hypertonic to their neighboring cells and to take water from them.

■Conversely the water is hypotonic, and will enter the cells in the outer of the carrot.

■Because of this water will pass from the outside of the carrot to the inside, and cause liquid in the tube to rise

8 0

2 years ago

Read 2 more answers

Beth learned in her science class that white blood cells in the human body capture harmful material by engulfing them. Then they

Andreas93 [3]

The mode of nutrition described above is phagocytosis.
Amooba is a unicellular eukaryotes and it obtains its nutrition using the same method. Amoeba feeds on microscopic organisms, which it engulfs, secretes into its food vacuole and digest.

5 0

2 years ago

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The _____ of water molecules explains how some insects can walk on water

Minchanka [31]

<span>Water has a surface skin. Some insects are able to generate tiny bubbles under their bodies which makes them buoyant enough to not break thru the water's skin. This skin is also known as surface tension. </span><span>Some bugs and small objects (pins or paperclips, etc) can rest on the surface of the water due to surface tension. Water molecules are bipolar and attract each other forming a skin. The bug or paperclip make tiny depressions in the water skin which provides buoyancy. A detergent will ruin the water tension (because it is a wetting agent) and the bug or paperclip will sink.</span><span>

</span>

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2 years ago