The chromosomes are aligned at the spindle equator during
A) anaphase. B) metaphase. C) prophase. D) interphase. E) telophase.
B
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Which of the following would NOT be an example of negative feedback control in homeostasis?
A. Blood volume and pressure drop due to bleeding. This decreased pressure causes the kidneys to increase water reabsorption to increase blood volume and pressure. B. Exposure to cold water causes body temperature to drop. Decreased stimulation of heat receptors causes constriction of blood vessels near the skin and better retention of heat. C. Glucose levels rise following consumption of a big dessert, triggering release of insulin which causes glucose levels to fall. D. During the birth process, stretch receptors in the uterus stimulate the release of oxytocin from the pituitary gland. This hormone stimulates uterine muscle contraction that increases stimulation of the stretch receptors. E. Blood levels of glucose fall during sustained exercise, causing the release of glucagon which stimulates the release of glucose into the blood.
Which of the following is a density-dependent
factor that would control the size of a population?
a. wind velocity b. light intensity c. resource availability d. rainfall e. wave action in an intertidal zone
The three types of cartilage are fibrocartilage, elastic cartilage, and ________ cartilage.
Fill in the blank(s) with the appropriate word(s).
Paleoanthropological evidence indicates that Australopithecus afarensis probably:a
used spoken language. b. constructed simple tools. c. did not construct tools, but used fire. d. did not construct tools nor used fire. e. did not speak, but did use pictorial symbolism