Below is a diagram of a bacterium. What structure does Y represent?
a. capsule
b. nucleoid
c. flagella
d. cell wall
e. fimbriae
Answer: b. nucleoid
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Semiconservative replication involves a template. What is the template?
A) single-stranded binding proteins B) DNA polymerase C) one strand of the DNA molecule D) an RNA molecule
Define Ockham's razor and provide an example
What will be an ideal response?
Which of the following choices best describes the neural organization of a cnidarian?
a. both central and peripheral nervous systems b. nerve net c. cephalization with ganglia d. central nervous system (CNS)
You excavate a fossil of a small reptile during a paleontology field trip. It has the following characteristics: skull with a pair of dorsal temporal openings and a pair of lateral temporal openings; bipedal with legs positioned directly under the pelvic girdle. Dating with radioisotopes shows that the specimen lived 100 million year ago (MYA). You conclude that the specimen belongs to which reptilian group (be specific as possible)?
A. Anapsid B. Dinosaur C. Archosaur D. Synapsid E. Diapsid