Which of the following paris of functional groups characterizes the structure of an amino acid?

A. -N-H-H and -C=O-R
B. -C=O-Oh and -N-H-H
C. -C=O-OH and -C=O-R
D. -OH and -N-H-H
E. -C-O-O-H and -N-H-H


Ans: B. -C=O-Oh and -N-H-H

Biology & Microbiology

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In Drosophila (fruit fly), red eyes is the wild type trait and purple eyes is a mutant version. Normal wings are wild type while curly wings is a mutant version. Which of the following genotype is correct for a homozygous red eyed, curly winged fly?

a) p+/p+ c/c b) p/p c/c c) p+/p+ c+/c d) p+/p c/c

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The pituitary gland controls the hypothalamus by the production of antidiuretic hormones.

Answer the following statement true (T) or false (F)

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Which of the following explains the difference between VNTRs and RFLPs?

A. In VNTRs, we are looking at sequence differences in genes; in RFLPs we are looking at sequence differences in noncoding DNA. B. In VNTRs, we are looking at sequence differences in noncoding DNA; in RFLPs we are looking at sequence differences in genes. C. In VNTRs, we are looking at the number of times a sequence is repeated; in RFLPs we are looking at size differences resulting from different restriction sites being present. D. In VNTRs, we are looking at size differences resulting from different restriction sites being present; in RFLPs, we are looking at the number of times a sequence is repeated.

Biology & Microbiology

Which statement is true?

a. Only diploid plant stages are free-living. b. All spores are clones of their parent cells. c. Most plant and fungi spores are haploid. d. Gametophytes are larger than sporophytes.

Biology & Microbiology