All bacterial cells have
A. a chromosome.
B. flagella.
C. endospores.
D. fimbriae.
E. capsules.
Answer: A
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What components of membranes are the most abundant?
a. carbohydrates b. sterols c. proteins d. fats e. phospholipids
When Stanley Miller applied heat and electrical sparks to a mixture of simple inorganic compounds such as methane, hydrogen gas, ammonia, and water vapor, what compounds were produced?
A) only simple organic compounds such as formaldehyde and cyanide B) mostly hydrocarbons C) only simple inorganic compounds D) simple organic compounds, amino acids, and hydrocarbons
Most adult insects have three major body parts or sections. They are the
A) head, body, and legs. B) head, thorax, and abdomen. C) antennae, head, and abdomen. D) legs, wings, and body.
You have homologous pairs of chromosomes in each of your cells. In what way are these pairs of chromosomes identical?
A) They have exactly the same genes. B) They will stay together during meiosis. C) They have genes for the same traits. D) They both come from the same parent.