A keystone species
a. has a disproportionately large effect on a
community relative to its abundance.
b. controls the prey species.
c. may increase or decrease the number of
prey species in a community.
d. has a disproportionately large effect on a
community relative to its abundance and
may increase or decrease the number of
prey species in a community.
e. has a disproportionately large effect on a
community relative to its abundance,
controls the prey species, and may increase
or decrease the number of prey species in a
community
E
You might also like to view...
Which of the following does not describe an aspect of the Human Genome Project?
A. Overlapping clones from YAC and BAC libraries were identified by hybridization and organized into long contiguous stretches called contigs. B. Landmark sequences on the contig called sequence tagged sites (STS) were used to aid in ordering the contigs. C. Landmark sequences on the contig called expression sequence tags (EST) were used to aid in ordering the contigs. D. The contigs were sequenced using a shotgun method, and the resulting sequences were assembled by computer. E. All of these choices describe aspects of the Human Genome Project.
Which of the following is the specialized junction between neurons where signals pass between them?
a. node of Ravier b. axon hillock c. synapse d. dendrite
Which of the following is not true of the enzyme–substrate interaction?
A) Many enzymes are extremely specific regarding a substrate. B) Many enzymes cannot recognize a stereoisomer of their substrate. C) Some enzymes accept any of a whole group of substrates. D) Carboxypeptidase recognizes any of the amino acids from the carboxyl end of a polypeptide. E) Cells are often able to carry out metabolic activity with only a handful of enzymes because many are nonspecific.
Hemophilia, Duchenne muscular dystrophy, and color blindness are examples of ________ disorders
Fill in the blank(s) with correct word