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mash [69]
3 years ago
15

HELp we're doing this in class for independent work and I don't know the answer

Biology
2 answers:
Allushta [10]3 years ago
6 0
Cardiac involuntarily pumps the heart, smooth involuntarily preforms peristalsis (digestion), and skeletal muscle voluntarily moves the body.
ohaa [14]3 years ago
5 0

Answer:

Muscle tissue is characterized by properties that allow movement. Muscle cells are excitable; they respond to a stimulus. They are contractile, meaning they can shorten and generate a pulling force. When attached between two movable objects, in other words, bones, contractions of the muscles cause the bones to move. Some muscle movement is voluntary, which means it is under conscious control. For example, a person decides to open a book and read a chapter on anatomy. Other movements are involuntary, meaning they are not under conscious control, such as the contraction of your pupil in bright light. Muscle tissue is classified into three types according to structure and function: skeletal, cardiac, and smooth.

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Focus on the evolution of horn size in the Bighorn sheep population from 1950 to present. What would you predict would happen if
dalvyx [7]

Answer:

The correct answer is option e) "Over time, we could see an increase in the H1 allele frequency".

Explanation:

The bighorn sheep (Ovis canadensis) is a species that is a very attractive for hunters because of its long horns. This negative human influence has make that bighorn sheep with long horns struggle to survive and reproduce. Horn size in bighorn sheep is determined primarly by a gene called HRN, which has two alleles H1 (for long horns) and H2 (for smaller horns). if hunting were discontinued for bighorn sheep in a large population we can predict that over time, we could see an increase in the H1 allele frequency, because in this population bighorn sheep with long horns will have better chances of surviving.

6 0
3 years ago
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Which two organisms are herbivores
Mars2501 [29]

Answer:

Examples of large herbivores include cows, elk, and buffalo. These animals eat grass, tree bark, aquatic vegetation, and shrubby growth. Herbivores can also be medium-sized animals such as sheep and goats, which eat shrubby vegetation and grasses. Small herbivores include rabbits, chipmunks, squirrels, and mice.

Explanation:

6 0
2 years ago
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What are reactants in the process of photosynthesis
soldi70 [24.7K]

Answer:

here is your Answer.

Explanation:

Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants .

3 0
2 years ago
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Explain what cells are and why there important
VikaD [51]

Answer:

Cells are the basic structure and unit of life. There are prokaryotic and eukaryotic cells. Prokaryotic cells are very basic, and have no nucleus, few organelles, and are ususally bacteria. Eukaryotic cells are more complex and have nuclei, are larger compared to prokaryotic cells, more organelles, and have emembrane bound organelles. There are plant and animals cells, each have certain organelles that other don't. For example, plant cells have large vacuoles and a cell wall; animal cells have centrioles. Cells are important because they provide strucure for the body, and take in nutrients from food and carry out many important functions, such as protein synthesis, respiration, growth and development, and more. Billions of cells make up a complex organism's body, while a single cell can make up an entire organisms, and carry out all of the needed functions. That's a quick summary of what cells are, and some of the things that they do that make them so important

Explanation:

3 0
3 years ago
Crop pollination, water purification, and moderation of weather extremes are just a few examples of __________.
Over [174]
Those are examples of ecosystem services! Hope this helps:)
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4 years ago
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