Modern day birds are most closely related to which of the following?
A. mammals
B. dinosaurs
C. amphibians
D. lungfish
B
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This is a nucleotide containing molecule that is commonly used to carry electrons in the cell.
A. ADP B. ATP C. NAD+ D. pyruvic acid
Organisms that depend on the energy stored in chemical bonds by other organisms for their food energy are called ____________.
A. Autotrophs B. Heterotrophs C. Oligotrophs D. Chemotrophs
From the standpoint of the microorganism, in glycolysis the crucial product is
A) ATP; the fermentation products are waste products. B) ethanol or lactate; ATP is a waste product. C) CO2; ATP is a waste product. D) not relevant because glycolysis is not a major pathway.
Which of the following best describes how the environment may play a role in the expression of our genes?
A. Some phenotypes, including skin color, can be influenced by the environment. The genotype still determines some aspect of skin color, but the interaction with the environment, in the form of sun exposure, can cause variations in the resulting phenotype. B. The environment is not able to alter genes or their physical expressions. Genotypes and phenotypes are both completely independent of environmental changes, unless in the form of mutations. C. The environment can alter an individual's appearance, but because these changes are temporary and unable to be inherited, they have no impact on the genotype or the expression of that genotype. D. All genes are directly influenced by the environment, even if only in minor ways, so the environment will always alter phenotype for all genes.