Imagine that during her hunt, the same lioness wounds a gazelle. The gazelle is able to escape, but its blood pressure is rapidly decreasing as it loses blood. What can happen in the gazelle's body to increase blood pressure?
A. The pituitary gland can secrete
vasopressin.
B. The peripheral nervous system can signal
specific arterioles to contract.
C. The peripheral nervous system can signal
specific arterioles to expand.
D. The pituitary gland can secrete thyroid
stimulating hormone (TSH).
A,B
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Based on the literature, you hypothesize that students in traditional biology lectures will have the same grades as students in online biology lectures. You decide to test your hypothesis by comparing grades of students in traditional and online biology lectures over a semester. As a result of the experiment, you observe that the grades in the traditional lectures and the grades in the online
lectures are not significantly different. What do these observations allow you to do? A. develop a scientific theory B. reject the hypothesis C. accept the hypothesis without further question D. reject the null hypotheses
The binding of neurotransmitter to receptors on the muscle cell causes:
A. an influx of sodium ions. B. an influx of potassium ions. C. an efflux of sodium ions. D. an efflux of potassium ions.
A cross bridge is the binding of which two proteins?
A. actin and myosin B. actin and troponin C. myosin and troponin D. collagen and troponin E. myosin and collagen
Four of the five answers listed below are the
results of fertilization. Select the EXCEPTION.
a. fruit b. seed c. embryo d. pollen e. endosperm