Which of the following would not be an example of structure determining function?
A. the highly branched trachea of insects
B. the electrical connections between cardiac muscle cells
C. the tight packing of epithelial cells on top of the basal lamina
D. the brush border of the small intestine
E. All of these choices are examples of structure determining function.
E. All of these choices are examples of structure determining function.
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Some major changes that occurred in horse body size, foot anatomy and tooth morphology are hypothesized to be due to natural selection because of ...
A. changes in global climates which resulted in changing environments from forest to grasslands. B. changes in global climates which resulted in changing environments from grasslands to forests. C. changing climates from dry to wet. D. changing climates from wet to dry. E. increase in reproduction of larger animals due to lack of water in the dry environment.
Which of the following best describes the function of the coenzymes NAD+ and FAD in eukaryotic cellular respiration?
(A) They participate in hydrolysis reactions by accepting protons from water molecules. (B) They participate directly in the phosphorylation of ADP to ATP. (C) They serve as final electron acceptors in the electron transport chain. (D) They accept electrons during oxidation-reduction reactions.
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. accept the hypothesis without further question B. reject the null hypotheses C. develop a scientific theory D. reject the hypothesis
Two kinds of mice live in the same area but one is black and the other is brown. Which of the following questions would be most valuable in determining if they are of the same species?
A. Do members of the two kinds mate with one another and have offspring that reproduce? B. Do the two kinds have other physical differences other than color? C. Are the brown mice eaten more often by owls than black mice? D. Do the brown mice climb trees more often than black mice?