Griffith worked with
A) Streptococcus
B) bacteriophage
C) frog eggs
D) Drosphila
Ans: A) Streptococcus
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Chloroplasts are composed of membranous sacs called ________ that carry chlorophyll. Surrounding these sacs is a ground substance called ________.
A. grana; stroma B. cristae; stroma C. thylakoid; matrix D. cristae; matrix E. thylakoids; stroma
Polygenic inheritance may result in a continuum of phenotypes because
A. the genes that are involved can be considered to be co-dominant B. the alleles for each gene are either completely dominant or recessive. C. there is a low environmental effect. D. there is a high environmental effect.
Peptide bonds form between
A. two amino groups. B. two carboxyl groups. C. one carboxyl group and one R group. D. one amino group and one carboxyl group. E. one R group and one amino group.
Which of the following organelles would form a membrane-bound package, also known as a vesicle?
A) chloroplasts B) ribosomes C) Golgi apparatus D) mitochondria E) lysosomes