Each DNA strand serves as which of the following during DNA synthesis?
a. replicate
b. substitute
c. template
d. source of nucleotides
e. source of sugars
C
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Molecules made primarily of carbon and hydrogen are called hydrocarbons. How many hydrogen atoms are present in each of the following molecules? A ring of six carbon atoms held together by alternating single and double bonds?
A. 6 B. 8 C. 10 D. 12
Review the ABC model for flower development in Arabidopsis shown below. Which of the following statements about the ABC model is incorrect?
A. Activity A alone results in the formation of sepals. B. Activity A and B together result in the formation of petals. C. Activity B and C together result in the formation of stamens. D. Activity C alone results in the formation of carpels. E. If activity B is missing, only petal formation will be affected.
An autosomally recessive metabolic disorder in the phenylalanine pathway that was first investigated by Garrod at the
beginning of the twentieth century is ____________________. Fill in the blank(s) with the appropriate word(s).
What help move lymph throughout the lymph vessels?
a. constriction of blood vessels b. skeletal muscle and breathing movements c. conscious actions d. dilation of blood vessels