Hydrophobic residues are seen on the 'outside' surface of transmembrane proteins (i.e. orientated towards the lipid bilayer of the membrane). Consequently, it was suggested that the transmembrane proteins have an 'inside-out' structure compared with a globular protein. Why was this suggestion proposed?
A. Globular proteins are seen to have a hydrophilic core
B. Transmembrane proteins are seen to have a hydrophilic core
C. Globular proteins are seen to have hydrophobic residues inside the core of the protein
D. Transmembrane proteins are very much more difficult to purify than globular proteins
Ans: C. Globular proteins are seen to have hydrophobic residues inside the core of the protein
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Refer to Figure 34-2. The structure labeled __________ is responsible for the transport of dissolved sugars
a. 4
b. 5
c. 6
d. 7
e. 9
Female cardinals select male mates in part based on their bright red color. What effect would this have on a cardinal population that was in Hardy-Weinberg equilibrium?
A. The frequency of red alleles would be less than those predicted by Hardy-Weinberg equilibrium. B. The red allele frequencies would remain unchanged because of equilibrium. C. The frequency of red alleles would be greater than those predicted by Hardy-Weinberg equilibrium. D. The red allele frequencies would decrease because of equilibrium. E. The frequency of red alleles would be equal to those predicted by Hardy-Weinberg equilibrium.
Some cells may contain multiple genomes
Indicate whether the statement is true or false
Who invented the microscope?