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Using the equation PH = -log (H+), a solution with a (H+)= 10+ M has a PH of which of the following?

A. 9

B. 5

C. 1

D. 10

Answer Explanation:

Concentration of H+ in the solution = 10 −1 M

pH= -log(10 −1)

pH= -(-1)

=1

Therefore, the Correct Answer is C.

Q #1: The hip is an example of which of the following type of joints?

A. Ball-and-socket

B. Pivot

C. Gliding

D. Hinge

Answer Explanation

The hip joint is an example of a ball-and-socket joint. The hip joint is formed by the articulation of the head of the femur with the acetabulum of the pelvis. The rounded head of the femur (ball) fits into the cup-shaped acetabulum (socket), allowing for a wide range of motion in multiple planes.
Q #2: Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?

A. Pituitary gland

B. Thyroid gland

C. Adrenal glands

D. Ovaries

Answer Explanation

The pituitary gland produces prolactin, which regulates milk production
Q #3: Which of the following distinguishes endocrine and exocrine glands from another?

A. The presence or absence of ducts

B. The effect their secretions have on the target cells

C. The biochemistry of their secretions

D. The presence or absence of nerve innervation

Answer Explanation

Exocrine glands secrete their products into ducts that carry them to the target organs. In contrast, endocrine glands secrete their products directly into the bloodstream, which carries them to target cells throughout the body.

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