The resident human microbiota, staphylococcus, which is more likely to cause infections in compromised hosts such as patients with cancer, is:
a. Staphylococcus saprophyticus.
b. S. aureus.
c. S. epidermidis.
d. S. intermedius.
C
S. epidermidis is an opportunistic pathogen and is more likely a problem for those patients whose immune function is depressed.
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The oldest surviving primate lineage includes the ____, agile climbers that live in the forests of Madagascar
a. lemurs b. tarsiers c. gibbons d. squirrel monkey e. chimpanzee
Why is fertilization in flowering plants called double fertilization?
a. it takes two pollen grains to fertilize a single ovule b. two ovules must be fertilized to form a single seed c. two cells in the ovule are fertilized, the egg and the endosperm mother cell d. one pollen grain fertilizes two ovules e. it takes the efforts of two flowers (male and female) to produce seeds
Every species has a unique two-word name called the
A. scientific name. B. genus. C. phylogeny. D. evolutionary tree. E. clade.
What is an adaptation (in the context of evolutionary theory)?
What will be an ideal response?