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solong [7]
3 years ago
12

Name the brain structure and the hormone it secretes to help us stay asleep.

Biology
1 answer:
zepelin [54]3 years ago
7 0
Melatonin is the hormone secreted by Pineal gland in the brain
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Meteorites formed a long time ago in the early solar system.<br> True or False
zalisa [80]

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True.

Explanation:

This is true because Meteorites originate range from 4.5 billion years old to 200 million years old.

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Evidence that cytoskeletal elements have ancient origins comes from the: sequence similarities of cytoskeletal elements when com
Gnesinka [82]

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All of these choices are correct.

Explanation:

A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, cytoskeleton, etc.

Cytoskeleton refers to a structure consisting of filaments and tubules which help to maintain internal organization and support the shape of the cells. It comprises of three (3) main filaments and these includes: actin filaments, intermediate filaments and microtubules.

Generally, there are numerous evidence that cytoskeletal elements have ancient origins and they include all of the aforementioned facts.

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Question 8 of 10
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Answer:

Option A.

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Air pressure decreases with increasing altitude.

7 0
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What might happen if cells divide uncontrollably
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<span>When cells divide uncontrollably, then there is a huge number of them and they take up most of the space in the body. Thus, lumps start to appear on and in a person's body, on organs and skin, and these lumps often represent cancer. So, uncontrollable division of cells can lead to cancer. Hope this helps. Let me know if you need additional help!</span>
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3 years ago
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