Organisms that have nutritional needs that are relatively complex and require extra media components to be used for growth are called:
a. fastidious.
b. capnophiles.
c. neutrophils.
d. halophiles.
A
Fastidious organisms require special nutrients to grow in the laboratory.
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Which of the following statements about the differences between prokaryotic and eukaryotic genomes is FALSE?
A. Prokaryotic genomes are less complex than eukaryotic genomes. B. Prokaryotic genomes have centromeres, whereas eukaryotic genomes do not. C. Eukaryotic genomes have telomeres, whereas prokaryotic genomes do not. D. Prokaryotic genomes have one origin of replication, whereas eukaryotic genomes have multiple origins of replication. E. Chromosomes of prokaryotes have little repetitive DNA compared with chromosomes of eukaryotes.
Which of the following statements concerning cancer
cells is most accurate? a. Oncogenes are part of the regulatory section of a chromosome. b. Tumor cells have lost their inhibition to stop dividing. c. Oncogenes help control runaway cell division. d. Benign tumors usually spread to other body parts. e. Metastasis is the spread of benign tumors.
The biologist who studies interactions at the community level investigates interactions among
A) ecosystems. B) organisms of more than one species. C) animals of one species. D) social animals (such as honey bees). E) organisms of one species.
What is the characteristic lesion of Yersinia pestis?
A) a bubo B) a chancroid C) a soft chancre D) petechiae E) oozing abscesses in the intestinal wall