Members of which group are not deuterostomes?

A. vertebrates
B. echinoderms
C. arthropods
D. chordates


Answer: C

Biology & Microbiology

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

1.Mollusks that have two-part hinged shells are called bivalves. 2.Arthropods have jointed legs. 3.Presence of vertebrae is a shared characteristic among all chordates. 4.An internal membrane in chordates that protects the developing fetus is the notochord. 5.Birds are endothermic, feathered reptiles.

Biology & Microbiology

An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. What is the relationship between the alleles for hair texture?

A) pleiotropy B) incomplete dominance C) wavy hair dominant to both straight and curly hair D) codominance

Biology & Microbiology

Select the statement that is true when comparing solutions with a pH of 6 and a pH of 8.

A. The solution with a pH of 8 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 6. B. The solution with a pH of 6 has a 100 times lower concentration of hydrogen ions than a solution with a pH of 8. C. The solution with a pH of 6 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 8. D. The solution with a pH of 6 has a 2 times higher concentration of hydrogen ions than a solution with a pH of 8. E. Solutions with a pH of 8 has a 2 times lower concentration of hydrogen ions than a solution with a pH of 6.

Biology & Microbiology

Permease proteins that aid in the transport of nutrients resemble enzymes in their specificity for the substance to be transported. Each carrier is selective and will transport only a closely related set of substances.

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

Biology & Microbiology