The functions of roots do NOT include
A. photosynthesis
B. absorbing nutrients
C. absorbing water
D. anchoring a plant
Answer: A. photosynthesis
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Which of the following correctly lists the stages of human development?
A. fertilized egg, blastocyst, gastrula, morula B. fertilized egg, blastocyst, morula, gastrula C. fertilized egg, morula, blastocyst, gastrula D. fertilized egg, morula, gastrula, blastocyst E. fertilized egg, gastrula, morula, blastocyst
Sensory adaptation ____
a. increases one's sensitivity tochangesin environmental stimuli b. increases one's sensitivity to constant stimuli c. is primarily associated with pain receptors d. functions the same way in all types of sensory receptors e. is unique to predator animals
WT yeast (TRP+) can synthesize the amino acid tryptophan and can grow on media plates lacking tryptophan
In contrast, mutant alleles (trp?) block tryptophan synthesis and result in an inability of mutant strains to grow on media lacking tryptophan. A diploid yeast was made through the cross MATa ADE+ × MAT? ade?. Meiosis was induced in the diploid strain to produce an ascus with four haploid spores, which were separated and grown on plates lacking tryptophan. How many spores are expected to grow into colonies on the plate? A) 0 B) 1 C) 2 D) 3 E) 4
The core of an intestinal microvillus is composed of a tight bundle of ________
Fill in the blank with correct word.