Which of the following hormones regulates blood calcium levels?

A. Parathyroid hormone

B. Growth hormone

C. Norepinephrine

D. Melatonin

Answer Explanation:

The parathyroid hormone (PTH) from the parathyroid glands is important in serum calcium regulation. It increases blood calcium levels by stimulating osteoclasts to break down bone and release calcium into the bloodstream. PTH also enhances the absorption of calcium from the intestines and the kidneys.

Therefore, the Correct Answer is A.

Q #1: Use the table below to answer the question   Object Mass Time of Fall A 5.0g 2.0 sec B 5.0g 1.0 sec C 30.g 0.5 sec D 35.0g 1.5 sec   Which of the following conclusions is supported by the data?

A. Object A and B fall at the same rate

B. The time of fall is independent of the mass of the object

C. The greater the mass of an object, the faster it will fall

D. Air resistance is greater for A than for B

Answer Explanation

Objects A and B have the same and are subjected to the same gravitational pull. However, object B falls faster than A. This is due to a greater air resistance for A than B.
Q #2: Which of the following is an example of a biological macromolecule?

A. Nucleic acid, Protein

B. Monosaccharide

C. Amino and

D. Protein

Answer Explanation

Biological macromolecules are large organic molecules such as carbohydrates, lipids, nucleic acids, and proteins. They are built from smaller molecules, which are linked commonly by covalent bonds, and these can be broken down.
Q #3: Which of the following organelles is the site of intracellular digestion?

A. Mitochondria

B. Lysosomes

C. Centrosomes

D. Ribosomes

Answer Explanation

Lysosomes are membrane-bound organelles that contain lysozymes that are responsible for breaking down waste materials and cellular debris through intracellular digestion. This process helps maintain cellular health and homeostasis by recycling and degrading cellular components.

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Which of the following hormones regulates blood calcium levels?

More Questions on TEAS 7 Science

Q #1: Use the table below to answer the question   Object Mass Time of Fall A 5.0g 2.0 sec B 5.0g 1.0 sec C 30.g 0.5 sec D 35.0g 1.5 sec   Which of the following conclusions is supported by the data?

Answer Explanation

Q #2: Which of the following is an example of a biological macromolecule?

Answer Explanation

Q #3: Which of the following organelles is the site of intracellular digestion?

Answer Explanation

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Which of the following hormones regulates blood calcium levels?

More Questions on TEAS 7 Science

Q #1: Use the table below to answer the question &nbsp; Object Mass Time of Fall A 5.0g 2.0 sec B 5.0g 1.0 sec C 30.g 0.5 sec D 35.0g 1.5 sec &nbsp; Which of the following conclusions is supported by the data?

Answer Explanation

Q #2: Which of the following is an example of a biological macromolecule?

Answer Explanation

Q #3: Which of the following organelles is the site of intracellular digestion?

Answer Explanation

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Q #1: Use the table below to answer the question Object Mass Time of Fall A 5.0g 2.0 sec B 5.0g 1.0 sec C 30.g 0.5 sec D 35.0g 1.5 sec Which of the following conclusions is supported by the data?