Skin cancers typically develop in the
a. lower layers of the epidermis.
b. upper layers of the dermis.
c. upper layers of the epidermis.
d. lower layers of the dermis.
e. subcutaneous layer.
A
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Which of the following statements about the human male reproductive system is false?
A. Constriction of the arteries and dilation of the veins in the penis causes a change in blood flow that leads to an erection. B. The scrotum hangs outside of the abdominal cavity because spermatogenesis requires cooler temperatures. C. Sperm become motile in the epididymis. D. Both sperm and urine leave the body through the same structure. E. The head of the penis is known as the glans penis.
During which stage of development are germ cell layers first formed?
A. fertilization B. cleavage C. neurulation D. gastrulation E. organogenesis
What is a major similarity and difference between photorespiration and aerobic respiration?
What will be an ideal response?
Which hormones are secreted by the adrenal cortex, and regulate carbohydrate, protein, and fat metabolism?
A. Mineralocorticoids
B. Gonadocorticoids
C. Corticosteroids
D. Glucocorticoids