Some evidence that algae are the closest relative to plants is that they both:
a. Have chloroplasts
b. Contain chlorophyll a
c. Have cellulose rich cell walls
d. Use starch as a nutrient reserve
e. All are correct
Answer: e. All are correc
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Which of the following is a kingdom within the domain Eukarya?
A ) Viruses B ) Monera C ) Fungi D ) Archaea E ) Bacteria.
Due to the molecular interactions between lipids and polar molecules, _____
a. water molecules isolate themselves into droplets when mixed with lipids b. lipids readily dissolve in water c. nonpolar lipids will not interact with water d. polar substances pass through a lipid bilayer more readily than nonpolar substances e. polar molecules embed in the hydrophobic interior of the phospholipid bilayer
Which important discovery in the early 1900s enhanced food production, thus increasing human population growth?
a. cultivation of rice b. cultivation of wheat c. the wheel d. synthetic fertilizer e. penicillin
Suppose that a homeotic gene from Drosophila is introduced into an Arabidopsis embryo that has a pre-existing mutation in one of its homeotic flower genes. What effect would you expect and why?
A) rescue (or negating) of the phenotype of the mutant because the fly Hox gene supplies the missing protein B) correction of the sequence in the mutant by recombination with the Drosophila gene sequence C) expression of the Drosophila homeotic gene correcting the mRNA of the mutant plant D) a mixture of roughly equal numbers of Drosophila and plant gene product, producing an intermediate phenotype E) no effect, because Hox genes are different from MADS box genes