Mitochondrial and chloroplast proteins are synthesized on
a. ER ribosomes.
b. free cytosolic ribosomes.
c. organellar ribosomes.
d. Both b and c
Answer: b. free cytosolic ribosomes.
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Answer the following statements true (T) or false (F)
1. Implantation of the blastocyst into the uterine wall is correlated with the degeneration of the corpus luteum. 2. Menstruation is initiated when progesterone levels increase. 3. The length of a pregnancy is influenced by the size of both the mother and the embryo. 4. The placenta develops from the endometrium while the fetus develops from embryonic tissue. 5. There is no possibility of a male contraceptive ever being developed for humans.
Which study indicates that some mutations are inherited from our parents?
a. study of mutations in nerve cells b. study of mutations in somatic cells c. study of mutations in germline cells d. study of mutations in premature infants e. study of mutations in in vitro babies
DNA and RNA are alike in
a. the pentose sugar. b. all the nitrogenous bases used to assemble the genetic code. c. the number of strands. d. their function in genetics. e. none of these.
__________ is the predominant photosynthetic product carried in phloem
a. Glucose b. Cellulose c. Sucrose d. Maltose e. Fructose