Your body produces all the following digestive enzymes, but not all of them are produced where they are used. Which of the following is produced at a different location from where it is used?
A) salivary amylase
B) pepsin
C) sucrase
D) lactase
A
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What structure prevents water from moving between cells of the endodermis of the plant root?
a. Casparian strip b. Okazaki fragments c. sclerids d. collenchyma e. sclerenchyma
A water molecule is polar because of ___.
A. transfer of electrons B. unequal sharing of electrons C. its ability to freeze D. its hydrogen bonds E. its change in density when frozen
In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.2. What is the frequency of individuals that are heterozygous for this allele?
A) 0.020 B) 0.04 C) 0.16 D) 0.32
Identify the individual who disproved spontaneous generation by using a swan-neck flask to show that air and dust were the source of microbes.
A) Carl Woese B) Theodore Schwann C) John Needham D) Louis Pasteur