In the early growth stages of a seedling, what is
responsible for cell enlargement?
a. mitosis
b. cytoplasmic divisions
c. soil minerals
d. water uptake
e. mitosis and cytoplasmic divisions
Answer: d
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Match the following E. coli ribosomal components on the left with the function on the right. Enter only one letter on each line. Not all letters will be used
A. 16S rRNA _____ binds to IF-3 B. 5S rRNA _____ catalyzes the peptidyl transfer reaction C. 30S ribosome _____ specifically recognizes the Shine-Delgarno sequence D. 23S rRNA
__________ is used in the manufacturing of pizza, and this type of yeast grows __________
than most other varieties.
a. Baker’s yeast; faster b. Baker’s yeast; slower c. Brewer’s yeast; faster d. Brewer’s yeast; slower
Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam. It may be enough energy to turn a mill wheel or an electricity-generating turbine
Choose the term that best describes the type of energy stored in the water at the top of the dam. A) Chemical B) Potential C) Radiant D) Kinetic
Paleontological studies indicate that, over millions of years,
A. the extinction of species is not related to the community in which they lived. B. species that occurred together in the distant past still occur together today; the community has held constant. C. groups of species that have coevolved rise and go extinct together. D. species richness is constant over time. E. species seem to come and go individually as niches within a community become available.