Decalcification of the tooth enamel due to the production of high concentrations of organic acids in the mouth is known as
A) degenerative plaque.
B) dental caries.
C) dental plaque.
D) microbial enamel decalcification.
Answer: D
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Describe the process of how four different embryo sac cells become differentiated
What will be an ideal response?
The reproductive organ in males that produces sperm and testosterone for reproduction. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
Acetyl can be a substrate for a number of different reactions involving different enzymes and resulting in different products. This situation can be described as
A. enzymatic inhibition. B. negative-feedback inhibition. C. substrate competition. D. enzymatic competition.
You are doing field study work with a scientist studying spiders in the Amazon rainforest. You come across a previously undiscovered species of spider and set up a video camera with a zoom lens to observe it closely without disturbing it. You see the
female spider lay two eggs, kill an ant that tried to eat one of the eggs, and preserve the ant to feed the hatchlings the next day. She lays two more eggs as soon as the two offspring grow larger and leave. When your mentor asks for a monthly update, what exciting news do you have for her about this species? A) It exhibits unusual zero population growth tendencies. B) It exhibits unusual K-selected tendencies. C) It exhibits unusual intelligent learning tendencies. D) It exhibits unusual r-selected tendencies.