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Licemer1 [7]
3 years ago
13

A(n) ____________ is recognized by lymphocytes to be foreign and causes an immune response.

Biology
1 answer:
vagabundo [1.1K]3 years ago
6 0
An antigen is recognized by lymphocytes to be foreign and causes an immune response. It is important to know about the immune system of the body as well. The immune system is the system that recognizes and defends itself against any viruses, bacteria or any other harmful foreign bodies. 
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Genevieve often feels as though she is going to fall over while walking. her doctor diagnosis a tumor in her _____.
andrey2020 [161]

Her doctor diagnosis a tumor in her cerebellum.

Cerebellum is part of the central nervous system (CNS) located posterior with the function in motor control (balance and coordination of muscles and the body). It is essential for voluntary tasks such as walking, being able to stay balanced and upright. So imprroper function of this part of the brain will lead to struggling with maintaining proper muscle coordination.


4 0
3 years ago
Read 2 more answers
Why cycus are called conifer? give its 3major characteristics features​
Licemer1 [7]

Answer:

Cycads /ˈsaɪkædz/ are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, therefore the individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly[3] and live very long, with some specimens known to be as much as 1,000 years old.[citation needed] Because of their superficial resemblance, they are sometimes mistaken for palms or ferns, but they are not closely related to either group.

Cycads are gymnosperms (naked seeded), meaning their unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobili), somewhat similar to conifer cones.

Cycads have been reported to fix nitrogen in association with various cyanobacteria living in the roots (the "coralloid" roots).[4] These photosynthetic bacteria produce a neurotoxin called BMAA that is found in the seeds of cycads. This neurotoxin may enter a human food chain as the cycad seeds may be eaten directly as a source of flour by humans or by wild or feral animals such as bats, and humans may eat these animals. It is hypothesized that this is a source of some neurological diseases in humans.[5][6]

Cycads all over the world are in decline, with four species on the brink of extinction and seven species having fewer than 100 plants left in the wild.[7] The plant has a very long fossil history, with evidence that they existed in greater abundance and in greater diversity before the Jurassic and late Triassic mass extinction events.

Explanation:

~Dr.Smiley~

(Jane)

8 0
2 years ago
What is the function of a circulatory system? a) It brings a transport liquid into close contact with all cells in the body. b)
Tomtit [17]

Answer:

The correct answer is a) It brings a transport liquid into close contact with all cells in the body.

Explanation:

The circulatory system helps in bringing the blood which is a transport liquid in close contact with the cells present in our body. This helps in gas exchange between cells and blood. The circulation of blood in the body occurs by the pumping of blood by the heart into arteries, veins, and capillaries.

This circulation of blood plays many other vital functions like transport of nutrients to the cells, transport of waste products from the cell to outside the body, transport of hormones, maintenance of body temperature, etc.  

So all these processes become possible when transport liquid comes in contact with the cells. Therefore the right answer is a.

8 0
3 years ago
Which of the following is the primary cause of the rapid rise in loss of biodiversity?
xz_007 [3.2K]
The best and most correct answer among the choices provided by your question is the third choice or letter C.

Human activity is the primary cause of the rapid rise in loss of biodiversity.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
8 0
3 years ago
Read 2 more answers
Help me please. Its a timed assignment I have 10 mins left.
dmitriy555 [2]

Answer:

characteristics variety domesticated then crossbreed hope this helps.

Explanation:

i know a lot

8 0
3 years ago
Read 2 more answers
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