Which of the following are parasites?

a. some pathogensi
b. a few birds
c. a few plants
d. some flatworms and roundworms
e. all of these


Answer: e

Biology & Microbiology

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Testudines is the order that includes all of the shelled reptiles, such as turtles. The dorsal shell is called the carapace. What is the ventral shell of a turtle called?

a. plastron b. scutes c. belly shell d. gastroplatus

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The DNA of some archaeons is stabilized by association with archaeal histone proteins forming particles resembling eukaryotic nucleosomes.

Answer the following statement true (T) or false (F)

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Eukaryotic genes consist of protein-coding sequences and adjacent regulatory sequences

Indicate whether the statement is true or false.

Biology & Microbiology

Answer the following statements true (T) or false (F)

1. Genetic drift is when an individual from one population is introduced into a new population, introducing new alleles. 2. The presence of the traces of pelvic bones in both whales and snakes indicate that they descended from an ancestor that once had legs. 3. The theory of evolution can accurately explain the origin of life on Earth. 4. Organisms can have forms that look similar but come from very different evolutionary ancestors. 5. The fact that mitochondria cannot live outside of the cell suggests that ancestral cells engulfed and kept alive free-living prokaryotic anaerobes.

Biology & Microbiology