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dmitriy555 [2]
2 years ago
10

Which of the following are foreign substances to the body that generate an immune response?

Biology
2 answers:
sergejj [24]2 years ago
6 0
C) Antigens

Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens.
katrin2010 [14]2 years ago
4 0

Answer:

C. Antigens is correct

Explanation:

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2 years ago
Visual and hearing receptors are irreplaceable, but the taste and olfactory receptors are continuously renewed True False
8090 [49]

The given statement is True.

Visual Receptors: Rods and cones are the two types of cells present in the retal part of eye which works as a visual receptors which establishes a synaptic network involving neurons which connects the receptors to brain and help us in visualizing. However loss of neurons in the retina because of any kind of physical or biological damage permanently cuts the connection of receptors with brain and it cannot be replaced naturally.

Hearing receptors: Inside the ears there is a small structure known as cochlea which contains the organ of corti which further contains the hair cells [sensory cells] working as hearing receptors but research till date concludes that mammalian cochlear hair cells do not regenerate, either spontaneously or after damage.

Taste receptors: The small little bumbs present of our tongue are known as papillae whioch functions as taste receptors as they contain taste buds. Scientifically there taste buds die off and regenerate every few weeks.

Olfactory receptors: These receptors keep on replacing due to continuous differentiation of basal cells which develop and are capable of restablishing the connection with Central nervous system.

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2 years ago
3. Which of the following reflect reasons for America's interest in the Panama Canal?
Rom4ik [11]

"To facilitate the faster movement of naval ships from the Atlantic to the Pacific" reflect one of the reasons for America's interest in the Panama Canal.

<u>Answer:</u> Option E

<u>Explanation:</u>

Panama Canal is an artificial or man-made waterway of 82 km located in transcontinental country in Central America and South America named as "Panama". France was the very first nation to start work on the canal in 1881 but after some engineering issues they eliminated themselves from the project.

In 1901 the United States leaded the project which finally resulted into inaugural ceremony of the panama canal on 15th August, 1914.The bypass, one of the largest and most complex engineering projects ever undertaken, significantly reduced the time for ships to pass between the Atlantic and Pacific oceans. Therefore it allowed them to avoid the long, risky Cape Horn path around the southernmost tip of South America via the Drake Passage or Magellan Strait.

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Answer:

Its A i had hos question in usatestprep

Explanation:

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