A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The F1 plants have yellow seeds. What is the expected phenotypic ratio of seed color of the offspring of an F1 × F1 cross?
A) 1:2:1
B) 2:1
C) 3:1
D) 9:3:3:1
C
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(a) being consumed (used up) in the reaction. (b) lowering the activation energy of a reaction. (c) combining with otherwise toxic substances in the cell. (d) adding heat to the cell to speed up the reaction
Coxiella burnetii reproduces in the ________ of a eukaryotic host cell.
A. nucleus B. phagolysosome C. cytoplasm D. endoplasmic reticulum
Discuss how mutations that eliminate or alter the activity of an enzyme can cause phenotypic effects. What will be an ideal response?
A bacterial species that cannot tolerate the presence of oxygen and will only grow in the absence of oxygen is classified as a(n):
obligate aerobe obligate anaerobe facultative aerobe microaerophile aerotolerant anaerobe