The three principal organs of seed plants are
A. roots, leaves, and flowers
B. stems, leaves and roots
C. stems, fruits, and flowers
D. roots, stems, and flowers
Ans: B. stems, leaves and roots
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It can be very difficult to select an angle for sneaking up to a grasshopper to catch it because grasshoppers have _____
A) excellent hearing for detecting predators B) compound eyes with multiple ommatidia C) eyes with multiple fovea D) a camera-like eye with multiple fovea E) binocular vision
Which of the following is NOT membrane-associated?
A) NADH dehydrogenases B) flavoproteins C) cytochromes D) Cytochromes, flavoproteins, and NADH dehydrogenases all can be membrane-associated.
During elongation, the charged tRNA is recruited to which location on the ribosome?
What will be an ideal response?
Which is an example of negative feedback?
A. TRH stimulates the anterior pituitary to release thyroid-stimulating hormone. B. FSH and LH stimulate the gonads to produce sperm or eggs. C. When the blood becomes dilute, ADH is no longer released from the hypothalamus. D. Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that stimulates uterine contraction. E. Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production.