An animal, such as an arthropod, that transmits a pathogen from one host to another is a
A. vector.
B. fomite.
C. source.
D. carrier.
E. reservoir.
Answer: A
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The individuals who determined that Griffith's transforming principle was DNA were __________
A. Hershey and Chase B. Avery, Macleod, and McCarty C. Watson and Crick D. Creighton and McClintock
Answer the following statements true (T) or false (F)
1. Freshwater fishes are hypoosmotic. 2. Habituation is a type of learning. 3. Migration only occurs in vertebrates. 4. The main advantage of a territory is that it provides exclusive access to some resource. 5. Only invertebrates show true eusociality.
Each intact ribosome consists of a large and a small subunit made mostly of catalytic rRNA. A ribosome also consists of:
a. structural proteins b. free amino acids c. DNA d. lipids e. enzymatic proteins
Two copies of each chromosome separate from each other ____
a. in germ cells b. during mitosis c. in somatic cell division d. during the S phase of the cell cycle e. to create a diploid cell