Cellular pH is kept near a value of 7 because of
a. salts.
b. buffers.
c. acids.
d. bases.
e. water.
B
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When determining whether a relative is a proper match for organ or tissue donation, three sets of HLA alleles - inherited together - must match those from the intended recipient. These allele sets are known as _____
a. open reading frames b. splice sites c. copy number variants d. haplotypes e. disease-associated mutations
In the diagram of a root tip shown above, the item labeled "4" is the
a. quiescent center. b. zone of cell division. c. zone of elongation. d. root cap. e. zone of maturation.
A cell type that secretes skeletal support
elements and digests and transports food is indicated by a. A. b. B. c. C. d. D. e. E.
Considering organisms from the species level to the phylum level there is an increase in
A. unity. B. diversity C. structural similarity. D. color similarity.