Corn, rice, wheat, fleshy fruits such as apples and berries, and many spices are all produced by
A) gymnosperms.
B) ferns.
C) angiosperms.
D) seedless plants.
Answer: C
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Which of the following statements about villi is correct? (Select all correct choices.)
A. Villi can be found in both the jejunum and the ileum. B. Villi serve to increase surface area. C. Villi allow for enhanced nutrient absorption. D. Villi move food particles through the digestive tract. E. Villi secrete multiple types of digestive enzymes.
Which of the following does not reflect the action of an effector molecule on the transcription of a gene?
A. An effector binds to a repressor to decrease the level of transcription. B. An effector binds to a repressor to increase the level of transcription. C. An effector binds to an activator to increase the level of transcription. D. An effector binds to a polymerase to increase the level of transcription.
In monocots, endosperm ____
a. consists mainly of glucose and water b. is consumed by the embryo as the seed develops c. is transferred to the cotyledons d. is largely unused as the seed develops e. matures into a fruit
Which of the following is TRUE of foodborne botulism?
A) It is an intoxication disorder. B) It is not a life-threatening infection even when left untreated. C) Large amounts of bacteria must be consumed to produce disease. D) Normal food preparation methods can prevent it. E) An effective vaccine is available.