Why are the components of the electron transport chain embedded in the inner mitochondrial membrane rather than floating freely in the cytoplasm of mitochondrial matrix?
A. because electrons cannot float in the matrix.
B. to separate the ATP from the ADP.
C. because NADH cannot localize to the mitochondrial matrix.
D. to generate and maintain the proton gradient essential for ATP production.
Answer: D
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The female fetal pig is similar to the male fetal pig in that its body
(a) has separate openings for the urinary system and the reproductive system. (b) has a common opening for the urinary system and the reproductive system. (c) has an opening for the urinary system but none for the reproductive system. (d) has an opening for the reproductive system but none for the excretory system.
Fungi are more likely to ?"self-fertilize" because hyphal strands of the same individual are in close proximity to one another
Indicate whether the statement is true or false.
Which of the following statements is false?
a. Cell migration during embryonic development is an example of chemotaxis. b. Embryonic neurons follow adhesive cells as they migrate. c. Cells continue migrating throughout the entire embryonic process. d. Morphogenesis depends upon local growth. e. Controlled cell death can be involved in morphogenesis.
Which of the following best describes the genetic material a person receives from his or her father?
A.) 22 pairs of homologous chromosomes and an X and Y chromosome B.) 22 haploid cells and an X or Y chromosome C.) 23 diploid cells and an X and Y chromosome D.) 22 autosomes and an X or Y chromosome