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Cloud [144]
3 years ago
5

Lymphocytes are a component of which type of defense mechanism

Biology
1 answer:
MatroZZZ [7]3 years ago
3 0

Lymphocytes or natural killer is one of the component of innate immune system where it acts as defense mechanism of the body that are always present to mobilize and fight bacteria, viruses and microbes at the site of infection.

Moreover, innate immune system also refers to non-specific recognition of certain molecular shapes on pathogens. Other components of innate immune system includes physical epithelial barriers, phagocytic leukocytes, dendritic cells, and circulating plasma proteins.

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Draw three different food chains, from this food web, that contain an aphid.
serg [7]

The food chain that would include an aphid include:

  • Plant ---> Aphid ----> Birds
  • Plant ---> Aphid ----> Spiders
  • Plant ---> Aphid ----> Bat

<h3>What is a food chain?</h3>

A food chain is a chart that shows how food is transferred from producers to consumers.

Producers are plants as they are responsible for producing food from inorganic materials using the Sun's energy.

Consumers depend on plants and other organisms.

The food chain that would include an aphid include:

  • Plant ---> Aphid ----> Birds
  • Plant ---> Aphid ----> Spiders
  • Plant ---> Aphid ----> Bat

Learn more about food chain at: brainly.com/question/19066362

5 0
3 years ago
Does the second law of thermodynamics only apply to living organisms
aliina [53]
<span>The </span>second law of thermodynamics<span> states that the total entropy cannot decrease, </span>only<span> increase. This is why </span>living organisms<span> give off thermal energy: they lower their entropy, but the total entropy increases.</span>
6 0
3 years ago
explain how a change in the sequence of nucleotide in a strand of DNA might cause a protein to malfunction
Diano4ka-milaya [45]

Answer: Proteins are made using DNA as a template. The DNA is turned into RNA, and the RNA is then turned into DNA. 

A change in these nucleotides could end up making some part of the protein different. A single nucleotide change could be silent (no change in the protein) or could change a single amino acid (amino acids are the building blocks of proteins). If that was an important amino acid, the protein might not function at all! A silent change can occur because the same set of nucleotides sometimes makes the same final amino acid (for example, reading "gcc" "gca" "gcg" or "gct" nucleotides all mean "alanine" amino acid). 

The deletion of a single nucleotide, or the addition of one, can change the entire sequence of amino acids that come after it! Nucleotides are read in sets of three, so this throws off how the DNA is read. If would be like turning "The brown fox jumps over the dog" into "The gbrow nfo xjump sove rth edo g". Completely different! All of the words are thrown off.

I know it is long but I hope it helped

:D

7 0
4 years ago
Provide at least three reasons why friction is needed.
Oduvanchick [21]

Answer:

Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses.

Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding. In those cases, there is an advantage of having friction.

Quite often uses of frction can be seen from how things would be without friction. Without friction, you would not be able to walk, drive a car, or hold objects. Pens and pencils would not work.

Explanation:

4 0
3 years ago
Read 2 more answers
58. Which of the following Kingdoms contain multicellular organisms? *
Serjik [45]

Answer:

The answer is fungi.

3 0
3 years ago
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