HDL cholesterol is considered "good" cholesterol. What role does HDL play in preventing coronary heart disease?
a. HDL cholesterol inhibits LDL cholesterol synthesis
b. HDL cholesterol prevents transport of LDL cholesterol in blood
c. HDL cholesterol activates LDL cholesterol breakdown
d. HDL cholesterol prevents free radical formation in plaques
e. HDL cholesterol removes excess cholesterol from plaques
ANSWER: e
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Metamerism is:
A. the division of the body into segments B. the fusion of body parts C. shedding of the skin D. formation of the germ layers in early development E. the first cellular division following fertilization
The hormone oxytocin stimulates ____
a. meiosis of oogonia b. ovulation c. implantation of the embryo d. development of the fetal heart e. contraction of uterine muscles during childbirth
Which of the following zones has the highest productivity and biodiversity in the ocean?
a. neritic zone b. abyssal zone c. aphotic zone d. photic zone
Answer the following statements true (T) or false (F)
1.Estrogen is a male sex hormone. 2.Follicle-stimulating hormone (FSH) is only found in females. 3.Birth control pills only contain estrogen. 4.Sea urchins display external fertilization. 5.Fruit fly development expression of the bicoid gene on one end of the embryo is necessary for proper head positioning.