In a mesophyll cell of a leaf, the synthesis of ATP occurs in which of the following:
1. Ribosomes
2. Mitochondria
3. Chloroplasts
4. 1, 2 and 3
A. 1 only
B. 2 only
C. 3 only
D. 2 and 3 only
Answer: D. 2 and 3 only
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How many cell types would we expect to find in the simple primary tissues of plants?
A. One or two simple cell types. B. Several cell types. C. Many cell types. D. This cannot be generalized.
The release of testosterone requires
a. GnRH. b. luteinizing hormone. c. Sertoli cells. d. GnRH and luteinizing hormone. e. GnRH, luteinizing hormone, and Sertoli cells.
Identify human genetic defects or diseases that are inherited as:
A. an autosomal recessive. B. an autosomal dominant. C. an X-linked recessive. What will be an ideal response?
Branch points further down (within) the phylogenetic tree in the figure above represent:
a. an extinction. b. a speciation event. c. a domain. d. the formation of a new family of organisms.