Chloroplasts of red algae may have evolved from
ancient endosymbiotic
a. cyanobacteria.
b. dinoflagellates.
c. apicomplexans.
d. archaeans.
e. nitrifying bacteria.
Answer: a
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Most of the bacteria that cause human disease are ____
a. chemoautotrophs only b. chemoheterotrophs c. photoautotrophs d. photoheterotrophs only
e. chemoautotrophs and photoheterotrophsThe theory of endosymbiosis is based on
A. evidence from the fossil record. B. the experiments in which bacteria were made to grow in plant cells forming chloroplasts. C. the knowledge that ribosomes are structures found in bacteria, plants, and animals. D. similarities between chloroplasts and other organelles in animals. E. the observations that chloroplasts and mitochondria resemble bacteria.
In the nucleotide sequence ACTGG, what does C stand for?
a. cysteine b. cytotoxic c. cytosine d. chargaff e. cytoplasm
__________ relieve allergy symptoms by dampening the effects of histamines. Fill in the blank(s) with the appropriate word(s)