In this sample of cells, what stage of the cell cycle are most of the cells in?
A) G1
B) S
C) G2
D) mitosis
Answer: A
Biology & Microbiology
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The side group (R group) of the amino acid shown above contains which of the following functional
groups?
a. hydroxyl b. carbonyl c. carboxyl d. sulfhydryl e. amino
Biology & Microbiology
Process by which the blastocyst attaches to the uterine lining and begins to digest its way inward. _____
A) Human chorionic gonadotropin
B) Zygote
C) Chorion
D) Morula
E) Folic acid
F) Fertilization
G) Blastocyst
H) Parturition
I) Cleavage
J) Ovulation
K) Placenta
L) Implantation
Biology & Microbiology
How many carbon atoms does deoxyribose have?
A. 4 B. 5 C. 6 D. 7 E. 8
Biology & Microbiology
Which of the following convert soil ammonium to nitrate?
A) nitrifying bacteria
B) ammonifying bacteria
C) mycorrhizae
D) nitrogen-fixing bacteria
Biology & Microbiology