During which phase of the bacterial growth curve does a bacterial population become much more resistant to harmful conditions?
A.
Lag phase
B.
Exponential phase
C.
Stationary phase
D.
Late log phase
D
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A group of cells having similar structure and function is called a(n)
A. tissue. B. organ. C. organ system. D. organism. E. population.
The exchange of gases with the respiratory
medium by animals occurs through the process of:
1.Active transport 2.Diffusion 3.Osmosis 4.Countercurrent exchangeWhich lineage of Echinoderms is made up of about 2000 species of brittle stars and basket stars, each with elongated, slender, somewhat snakelike arms surrounding a well-defined central disk?
a. Ophiuroidea b. Echinoidea c. Holothuroidea d. Crinoidea
Which phrase best defines what is meant by gene linkage?
a. genes that affect two different traits and that lead to a 9:3:3:1 phenotype ratio in a dihybrid cross b. genes that do not sort independently due to their being physically near each other on the same chromosome c. different alleles of the same gene d. genes whose effects combine to affect a single characteristic