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Arte-miy333 [17]
3 years ago
5

The sun contains about __________ percent of the mass of the solar system.

Biology
1 answer:
hodyreva [135]3 years ago
3 0

The sun contains about 99.9 percent of the mass of the solar system.


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Multicellular animals have levels of organization. What characteristic of cells makes this possible?
Kryger [21]
<span>Cells with similar structure and function merge to form tissues such as epithelial or connective.
hope it helped</span>
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4 years ago
Match the following terms and definitions. 1. an electrical nerve impulse sent by nerve fibers to the central nervous system for
vladimir1956 [14]

Answer:

1. an electrical nerve impulse sent by nerve fibers to the central nervous system for interpretation. <u>Action potential. </u>

2. neurons that detect chemicals such as those found in food. <u>Chemoreceptors. </u>

3. type of eyes many arthropods have; eyes that protrude outward and consist of many lenses. <u>Compound eyes. </u>

4. the structure that gives the response to an environmental change.<u> Effector</u>

5. neurons that detect electrical fields. <u>Electroreceptors. </u>

6. secretion of hormones into the blood stream to affect distant processes. <u>Endocrine.</u>

Explanation:  

An action potential is a change in the internal charge of a cell due to depolarization. These changes allow the transmission of a message from any part of the body to the central nervous system. The central nervous system will interpret the message and will give a response.

There are different types of receptors in our bodies. Chemoreceptors are the ones that detect chemicals and produce an action potential or a neurotransmitter. These receptors respond to chemicals. Another type of receptor is the electroreceptors. They detect electrical fields and are only on the skin of aquatic animals.

Compound eyes have a large number of ommatidia. As a result, the anthropods with this type of eyes have a large view angle. In other words, every ommatidium sees an image, and the final product is a combination of all of them.

The effector is the structure that gives an answer once an affector has sent the message to the nervous system that there was a change in the environment.

There are different kinds of secretions, autocrine, paracrine, and endocrine. In the endocrine secretion, the gland secrets hormones into the bloodstream so that they can travel long distances up to their target cell, which is far from the gland.

3 0
3 years ago
a. List two structures that are found in plant cells but are not found in animal cells. b. Provide the function (job) of each st
Lyrx [107]

Answer:

1. CELL WALL

2. CHLOROPLAST

Explanation:

1. Cell wall provide structural support and protection.

2. Chloroplast involved in photosynthesis to make glucose as food for plants cell.

7 0
3 years ago
5th grade pls help
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Their mass because it can let you know their weight and size
4 0
2 years ago
What impact would the loss of the grizzly bear population have on a food web (how would other organisms be impacted)?
Katyanochek1 [597]

Answer:

there would be a surplus of other prey species

Explanation:

5 0
3 years ago
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