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cestrela7 [59]
3 years ago
5

Which of the following statement about electromagnetic radiation is false

Biology
1 answer:
kompoz [17]3 years ago
7 0
D. All of its wavelengths are harmful

This is false, because a lot of electromagnetic radiation (such as visible light we see with our eyes) is not harmful.
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Which of the following organic molecules may have up to four levels of structure? A. Proteins B. Lipids C. Nucleic Acids D. Carb
masha68 [24]
The correct answer is proteins.

Proteins have four structures; (1) primary, (2) secondary, (3) tertiary, and (4) quaternary. Primary structures of proteins are formation of peptides and the peptide bonds between amino acids. Secondary structures of proteins involves the amino acid composition leading to hydrophobic interactions forming either alpha helices or beta sheets. Interactions between secondary structures of proteins will make the tertiary structure which is either soluble (globular) or insoluble (fibrous) proteins. Quaternary structures are the combination of two or more tertiary structures and these are called subunits.
4 0
3 years ago
The epiglottis is pushed downward and the larynx is lifted up to meet it when we swallow. True False
Alex17521 [72]

Answer:

The correct answer is true.

Explanation:

Swallowing of food is the process of passing the food from the mouth to the stomach through the way of the throat (pharynx) and esophagus. This process takes place in three stages:  oral, pharyngeal, and esophageal stages  

During the pharyngeal stage, epiglottis which is a leaf-shaped flap of cartilage located at top of the larynx (a muscular organ forming voice box) perform functions in response to the swallowed food as the larynx lift up or rises inside the neck to close the epiglottis while the epiglottis moves downward to cover it, providing more airway protection.

Thus, true is the correct answer.

8 0
3 years ago
What is the spreading of tumor cells to distant parts of the body via blood and lymph referred to as? A) Mitosis. B) Metastasis.
Alisiya [41]
<span>The correct answer is 'metastasis'. This is the migration of cancer cells from one place to another in the body. They do this by travelling through the blood stream or the lymphatic system. Mitosis is the process of asexual cell division. It produces cells that are identical to the original cell as one cell divides into two after replicating its organelles and genetic information. (Mitosis makes my toes.) Apoptosis is controlled cell death. When cells are getting old then they need to be replaced. Old cells are programmed to 'die' at the correct time. The cell contents are recycled to make new cells.</span>
5 0
3 years ago
What type of fault usually occurs because of compression?
xenn [34]

Answer:

the answer us d for this question

6 0
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The images above all illustrate the presence of a vestigial structure. What is this structure and why is it no longer used for i
alexandr402 [8]

Answer:

C, the Coccyx

Explanation:

4 0
2 years ago
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