Which of the following organelles can grow and divide to reproduce themselves?
A. mitochondria only
B. chloroplasts only
C. peroxisomes only
D. both mitochondria and chloroplasts
E. Mithochondria, chloroplasts, and lysosomes can reproduce themselves.
D. both mitochondria and chloroplasts
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Which of the following is the best answer for why plants require nitrogen?
A. To make chlorophyll B. To make amino acids and nucleotides C. To make cell walls D. To make membranes
Methylation
a. suppresses gene expression. b. slows transcription. c. increases the rate of translation. d. inhibits the activity of RNA polymerase. e. activates introns
The change in potato growth from dark to light conditions is an example for?
(a) thigmotropism (b) phototropism (c) photomorphism (d) gravimorphism (e) Circadian rhythm
Once DNA is separated on a gel, it is often desirable to gain some idea of its informational content. How might this be done?
What will be an ideal response?