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FromTheMoon [43]
2 years ago
14

Which protist is considered to be the most complex and specialized?

Biology
1 answer:
Elis [28]2 years ago
8 0

Answer:

The answer is B. Paramecium.

Explanation:

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What are the three types of homologies and the definitions?
olya-2409 [2.1K]

Answer:

hope this helps..

Explanation:

Dependent on the level of comparison four types of homology are defined: ( 1) Iterative ( = serial = homonomy), (2) ontogenetic, (3) di- or polymor- phic, and (4) supraspecific homology. ... Scientists have recently been paying renewed attention to the homology question.

Homology is the study of likeness, the similarity between species that results from inheritance of traits from a common ancestor. The study of similarities is broken up into three main categories: structural, developmental, and molecular homology.

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Which statement best describes the role carbon plays in the structure of compounds present in living things?
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i believe the answer is "A fundamental role". hope this helps.

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3 years ago
Polysaccharides are simple sugars. is it true or false
kari74 [83]
True is the correct answer
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How is mutation random and natural selection not
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Explanation:

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2 years ago
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secrete
Tanya [424]

Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point. If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples of:

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d. negative feedback

Answer:

d. negative feedback

Explanation:

Negative feedback responses are the ones that counteract the change. Any alterations in the internal body conditions such as blood calcium levels are sensed by receptors. The information is sent to the brain which in turn commands the effectors such as endocrine glands to secrete the required hormones to restore the normal conditions. Here, changes in the calcium levels are counteracted by the secretion of calcitonin and parathyroid hormones and the calcium is maintained within a narrow range. This represents negative feedback.

8 0
2 years ago
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