Seed banks
a. provide a source of seeds for farmers.
b. preserve seeds for museums.
c. preserve plant genetic diversity to be tapped
by genetic engineers.
d. distribute seeds to member seed companies.
e. do all of these.
C
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The species types that have the highest percentage found to be threatened compared to those evaluated is ________
a. green algae b. lichens and mushrooms c. crustaceans d. angiosperms
In most flowering plants, one sperm nucleus fuses with an egg forming a zygote that develops into an embryo. Another sperm nucleus fuses with ____
a. the endosperm mother cell to produce three cells, each with one nucleus b. the endosperm mother cell, forming a diploid cell c. the endosperm mother cell, forming a triploid (3n) cell d. one of the smaller megaspores to produce what will eventually become the seed coat e. one of the smaller megaspores to produce a diploid endosperm
The electrons that are released by the splitting of H2O molecules during photosynthesis ultimately end up in: -glucose.
-ATP. -H2O -NADPH. -rubisco.
How does a scientist get the corrected version of a gene into the cells of a gene therapy patient?
A) It is delivered with a modified virus. B) It is directly injected with a microscopic hypodermic needle. C) It is attached to a food molecule, such as glucose and is then ingested by the individual. D) It is attached to the surface of microscopic beads and is then shot into the individual (i.e., shotgun method).