As cell size increases, the
A) volume and surface area decrease.
B) volume increases proportionally more than the surface area.
C) surface area increases proportionally more than the volume.
D) ratio of surface area to volume stays the same.
Answer: B
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Why are coronary arteries at higher risk for clotting than coronary veins?
1.Coronary arteries are under greater pressure.
2.Coronary arteries have a smaller diameter lumen.
3.Coronary arteries have more LDL than coronary veins.
4.Coronary arteries move more blood than coronary veins.
Pluripotent cells are taken from the ____________ of a blastocyst. Fill in the blank(s) with the appropriate word(s)
Which of the following statements is true?
A) A band of ribosomes determines where a cell plate will form in a dividing plant cell. B) The way in which a plant cell differentiates is determined by the position of the nucleus in the developing plant cell. C) Homeotic genes often control morphogenesis. D) Plant cells differentiate because the cytoskeleton determines which genes will be turned "on" and "off."
Answer the following questions true (T) or false (F)
1. Hypothalamic neurons directly control the anterior pituitary with neural stimuli at a synapse. 2. Most of the hormones of the anterior pituitary control other endocrine glands. 3. Follicle-stimulating hormone stimulates thyroid gland follicles to produce T4.