The very first vertebrates were
A. fishes with jaws.
B. fishes without jaws.
C. cartilaginous fish.
D. bony fish.
Answer: B
Biology & Microbiology
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Which of the following is not usually involved with the spread of staphylococci?
A. Inanimate objects B. Sexual intercourse C. Hands D. Respiratory secretions
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A complete cycle of contraction and relaxation of muscle cells due to stimulation by a motor neuron is called a muscle ________
Fill in the blank(s) with correct word
Biology & Microbiology
Bowerbirds build elaborate nests to
A) defend their territory. B) attract prey. C) hide from predators. D) attract a mate. E) increase aggressive behavior.
Biology & Microbiology
A large molecular complex that links together the growing chain of RNA nucleotides during transcription, using the DNA strand as a template
What will be an ideal response?
Biology & Microbiology