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balandron [24]
3 years ago
8

Antibodies:_______. A. play a large role in cell-mediated immunity. B. are produced by both T and B cells. C. are composed of fo

ur light and four heavy polypeptide chains. D. are not specific, but act generally. E. have a variable region that binds to a specific antigenic determinant.
Biology
1 answer:
LuckyWell [14K]3 years ago
6 0

Answer:

E. have a variable region that binds to a specific antigenic determinant.

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The case of little albert is used by behaviorists to explain ____.
ASHA 777 [7]
The answer is D. phobias. The little Albert experiment demonstrated that emotional responses can be conditioned in human beings. The 9 months boy was exposed to different stimuli which included a rabbit, masks, a white rat, burning newspapers and a monkey. After some time he was exposed to the white rat and later a loud noise of metal was made and it scared the boy. This exposure was repeated and eventually the boy became afraid of white furry things including animals.
5 0
3 years ago
Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using co
svetlana [45]

Several examples of sphere interactions can be inferred from this photograph: Humans (biosphere) built a dam out of rock materials (geosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere).

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7 0
3 years ago
Which statement is true about nuclear decay
Readme [11.4K]

Answer:

Nuclear decay rates are constant

Explanation:

Spontaneous decay of unstable nuclei is a process of a statistical nature, it is not possible to predict with certainty when an individual radioactive nucleus will decay, nor can the decay process be influenced in any way.

Therefore, the half-life of radionuclides (specific for each radionuclide) is defined as the time period in which half of the initial number of radioactive nuclei decays.

The unit of measurement for the radioactivity of the material is the becquerel (Bq) and denotes the number of decays in one second (1Bq = 1 decay / 1 second).

5 0
3 years ago
The middle of the DNA ladder is made up of __?__.
Nutka1998 [239]

Answer:

The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle.

Explanation:

8 0
3 years ago
What is the most likely evidence of an energy transformation taking place when a wire that is twisted and turned breaks?
Mnenie [13.5K]
The answer is C

Hope this helps!
3 0
3 years ago
Read 2 more answers
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