Griffith worked with

A) Streptococcus
B) bacteriophage
C) frog eggs
D) Drosphila


Ans: A) Streptococcus

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology