The human microbiome is:
A. the collection of pathogenic microbes that attack humans and cause disease
B. the collection of symbiotic microbes living on or within the human body, often performing functions that humans do not possess
C. the collection of microbes that benefit human society, providing services such as bioremediation and assisting in food production
D. the collection of microbes that share the same environmental requirements as humans
E. the collection of microbes that are necessary for human survival, such as photoautotrophs and nitrogen fixing bacteria
B. the collection of symbiotic microbes living on or within the human body, often performing functions that humans do not possess
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Genes that modify the expression of other genes show:
A. dominance. B. incomplete dominance. C. recessiveness. D. blending inheritance. E. epistasis.
The medical term for a collapsed lung is
a. hemothorax. b. hydrothorax. c. planothorax. d. pneumothorax. e. brachiothorax.
Which of the following statements about cancer is incorrect?
A. Cancers are the direct result of mutations in growth-regulating genes. B. Benign cells are those that have metastasized. C. Cancer cells can sometimes spread into the bloodstream. D. Malignant tumors are not encapsulated. E. Malignant tumors are invasive.
How does cyclic electron flow differ from noncyclic electron flow?
a. No NADPH is produced by cyclic electron flow. b. No O2 is produced by cyclic electron flow. c. The cytochrome complex in the electron transport chain is not involved in cyclic electron flow. d. Both a and b are correct. e. a, b and c are correct