Metabolism refers to
A. chemical reactions such as photosynthesis.
B. the process of reproduction.
C. the formation of heterotrophs.
D. a collection of hypotheses.
A. chemical reactions such as photosynthesis.
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Miescher discovered phosphorus in DNA taken from
A) bacteria. B) viruses. C) soiled bandages. D) dead mice.
Which of the following statements is (are) true?
a. The anterior pituitary gland is essentially nervous tissue. b. The anterior pituitary gland secretes only two hormones. c. The posterior pituitary gland is the master gland. d. The posterior pituitary gland only stores and releases hormones produced by the hypothalamus. e. All of these are true.
Describe the differences between heterochromatin and euchromatin in chromosomes. Are there any situations in which one can be changed into the other?
What will be an ideal response?
Which of the following statements about transport through phloem is true?
A. Mostly dissolved starch is transported. B. It is aided by root pressure. C. Transport only occurs from the roots to the shoot. D. The direction of flow can change at different times if the sources and sinks change. E. No energy is required.