What number are the Porin proteins?
What will be an ideal response?
4
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Class I MHC proteins have grooves with open ends
Indicate whether the statement is true or false.
The two-factor crosses performed by Mendel support the observation that
A. alleles for a given trait are distributed randomly among an individual's gametes independent of the alleles for other traits. B. traits that are encoded by genes on different chromosomes are never found within the same gamete. C. the F1 generation can display phenotypes in combinations different from those seen in the P generation. D. the F2 generation will only display phenotypes in the same combinations as the P generation. E. self-fertilization of the F1 generation will produce 100% heterozygous plants at both loci.
Precambrian rocks contain fossils of:
a. only single celled organisms. b. great forests of flowering plants. c. the first insects. d. cells and simple organisms. e. primitive fish.
Which of the following is an exergonic reaction?
a. folding laundry b. synthesizing a protein c. burning wood for a campfire d. building a tower out of blocks