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shtirl [24]
2 years ago
8

A natural killer (NK) cell is a type of________ that has _____receptors extending from its plasma membrane.

Biology
1 answer:
marissa [1.9K]2 years ago
7 0

Answer: A natural killer cell (NK) is a type of lymphocyte that has an activating and inhibitory receptors extending from its plasma membrane

Explanation: A natural killer cell (Nk) is a type of lymphocyte (a white blood cell) that has an AC and inhibitory receptors. It plays a major role in host rejection of both tumours and virally infected cells. It contains specifical protein such as perforin and granules.

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How do mammals differ from other reptiles and amphibians? Mammals do not teach their young to hunt. Mammals provide shelter for
Contact [7]

Answer:

Mammals give live birth to their offspring. Reptiles and amphibians lay eggs. Mammals are also usually warm blooded while reptiles and amphibians are cold blooded. Most amphibians and reptiles abandon their young at a certain age while most mammals will take care of their offspring forever.

Explanation:

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7 0
2 years ago
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Describe factors that influence protein shape.
saveliy_v [14]

Answer:

proteins are only able to function properly in their specific shape, they will typically stay in that configuration unless something forces them to change. When proteins change their shape, this is called denaturation. Some external forces that affect protein shape are pH and temperature

3 0
2 years ago
In Figure 8–4, why might the candle in jar A burn longer than the candle in jar B?
castortr0y [4]
Need a picture!!
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5 0
3 years ago
If one were to cut the plasmid DNA with Hindill, Apal, and Smal, how large is each
tiny-mole [99]

A linear shaped piece of DNA strand is obtained when a plasmid is cut HindIII, Apa1, and Sma1.

Explanation:

Restriction enzymes are endonucleases which enzymatic proteins which can cut a DNA at specific sequences at particular recognition sites. The sequences recognized by these enzymes are usually palindromic that occurs for a definite length (6 bp, 4 bp, or 8 bp).

They can either be blunt cutters or sticky end cutters. APA1, SMA1, and HindIII are all restriction enzymes which can cut a circular plasmid at specific locations.

These restriction enzymes bind with the DNA at specific locations and cuts them to give linear strands of DNA either with a blunt or a sticky end.

4 0
3 years ago
Which of the following pieces of evidence would best support the argument that humans are more evolutionarily related to fish th
Phoenix [80]

Answer:

The early stages of embryo development in fish and humans look strikingly similar while insects develop very differently compared to both fish and humans,

Explanation:

It tells you that fish and humans have very similar embryo development (fetus development) while humans and insects develop very differently. Therefore, that supports the argument that humans are more like fish than insects.

5 0
2 years ago
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