Actin filaments are approximately _______ in diameter.
a. 5 Å
b. 7 nm
c. 11 nm
d. 25 nm
e. 50 nm
Ans: b. 7 nm
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Which primary producer listed below is considered the most abundant life form in the sea?
a. Dunaliella b. Synechoccus c. Methanococcus d. Pryolobus e. Prochlorococcus
Individuals that are better suited to their environment are likely to have more offspring and pass their genetic material on to future generations. This is referred to as:
a. evolutionary success b. genetic strength c. fitness d. inheritance strength e. survival
How does caffeine influence metabolic pathways?
A. Caffeine stimulates pathways that control blood glucose levels, resulting in a decrease in blood glucose. B. Caffeine stimulates the metabolic pathways that result in excess water production, causing frequent urination. C. Caffeine increases energy generated by cellular respiration pathways by increasing metabolic rates. D. Because caffeine is a stimulant, it only stimulates metabolic pathways; it never blocks or inhibits them. E. Caffeine causes the brain to release hormones that result in the storage of fatty acid chains. This process generates energy.
Temperature-sensitive neurons in the skin are responsible for initiating shivering.
Answer the following statement true (T) or false (F)