Which feature of cycads makes them similar to many angiosperms?
1. They have exposed ovules.
2. They have flagellated sperm.
3. They are pollinated by animals.
A) 1 only
B) 2 only
C) 3 only
D) 2 and 3
C
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Intestinal protozoan infections are typically spread by
A. the respiratory route. B. blood transfusion. C. body fluids. D. the fecal-oral route.
Which statement about mutations is true?
a. Beneficial mutations tend to spread through selection. b. The evolutionary effect of mutation is typically large. c. Harmful mutation are removed through genetic drift. d. Both harmful and beneficial mutations spread quickly.
The following are all characteristic of the water molds (Oomycota) except
A) the presence of filamentous feeding structures. B) flagellated cells. C) a nutritional mode that can result in the decomposition of dead organic matter. D) they possess cell walls of cellulose. E) a feeding plasmodium.
Which of the following is NOT utilized during the process of translation?
A. mRNA B. tRNA C. ribosomes D. DNA