What do G-protein coupled, enzyme-linked, and ligand-gated ion channel receptors have in common?
A. They associate with a protein bound to GDP or GTP.
B. They are all linked to protein kinase activation.
C. They change their conformation when bound to a hormone.
D. They open ion channels.
E. They bind similar hormones.
C. They change their conformation when bound to a hormone.
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The genes encoding for proteins involved in photosynthesis are located in the chloroplast
Indicate whether the statement is true or false.
If R is dominant to r, the offspring of the cross of RR with rr will
a. be homozygous. b. display the same phenotype as the RR parent. c. display the same phenotype as the rr parent. d. have the same genotype as the RR parent. e. have the same genotype as the rr parent.
Which of the following is most likely to occur if a parasite accidentally introduced into the Great
Lakes kills 95% of all living organisms living in the lakes? a. hybridization b. mass extinction of the surviving organisms c. allopatric speciation in the surviving organisms d. adaptive radiation of the surviving populations e. evolution of surviving organism
In humans, how many different kinds of gametes can be produced due to independent assortment only?
A. 246 B. 234 C. 462 D. 232 E. 223