Within organisms, the pairing of nitrogenous bases forms the DNA strand and the genes coded within the DNA. Which nitrogenous base pairs with adenine in a DNA strand?
A) guanine
B) cytosine
C) thymine
D) deoxyribose
Ans: C) thymine
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The fungus that produces penicillin belongs to which of the following groups?
A. ascomycetes B. basidiomycetes C. chytrids D. glomeromycetes E. zygomycetes
Energy
a. cannot be created. b. cannot be destroyed. c. cannot be created or destroyed. d. can be created, but it cannot be destroyed. e. can be created, and it can be destroyed.
Epithelial cells are more likely to become
cancerous than other tissue cells because epithelial cells
a. lack a nucleus. b. are always exposed to the external environment. c. are only found in simple tissues. d. do DNA replication more often. e. have an extensive blood vascular system
Insulin helps regulate blood sugar levels by stimulating the release of glucose from glycogen stores
Indicate whether the statement is true or false