The enzyme that breaks down starch is
A. lipase.
B. lactase.
C. pepsin.
D. amylase.
E. bile.
D. amylase.
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The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups—Lophotrochozoa and Ecdysozoa. What does this finding suggest?
A) These two subgroups have a common ancestor that was a deuterostome. B) The protostomes are a polyphyletic group. C) Division of these two groups occurred after the protostome developmental sequence appeared. D) The lophotrochozoans are monophyletic.
In the universal ABO blood grouping system, there are four phenotypes - A, B, AB, and O - which are determined by
three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____.
a. a polymorphism b. genetic drift c. the bottleneck effect d. a dimorphism e. the founder effect
A boy falls while riding his bike. A scrape on his hand almost immediately begins to bleed and becomes red, warm, and swollen. What response is occurring?
A) inflammatory response B) lytic response C) adaptive immune response D) autoimmune response
Cholera toxin causes intestinal cells to secrete large amounts of electrolytes, resulting in a very watery diarrhea.
Answer the following statement true (T) or false (F)