The type of plant cell that provides support without interfering with growth and is similar to "strings in celery" is a cell.
A. sieve tube
B. collenchyma
C. guard
D. sclerenchyma
E. parenchyma
B. collenchyma
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A problem with the action or production _______ leads to both type I and type II diabetes mellitus
A. glucagon B. growth hormone C. thyroid hormone D. insulin E. cortisol
The human body's arterial blood pH is tightly maintained around 7.4 by buffering agents that bind hydrogen ions to stop any change in pH. If an acid-base imbalance overcomes the buffer system, the body changes the ventilation rate, or the rate at which gas enters or leaves the lungs. Changing the ventilation rate changes the concentration of CO2 in the blood, which alters the pH of the blood. In this case, the muscles that control the ventilation rate are acting as the:
A. homeostatic challenge. B. effector. C. sensor. D. set point. E. integrator.
Primary infection with Epstein-Barr virus is known as
A) infectious mononucleosis. B) Burkitt's lymphoma. C) Hodgkin's lymphoma. D) chronic fatigue syndrome. E) oral hairy leukoplakia.
The cell cycle is a series of events that occur in which order?
A. G1, S, G2, cytokinesis, mitosis B. G1, S, mitosis, cytokinesis, G2 C. G1, S, G2, mitosis, cytokinesis D. G1, S, cytokinsis, mitosis, G2