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A year ago
What is the primary mechanism associated with the role of fluoride in prevention of dental caries?
 A) Fluoride increases calcium absorption, which increases crystal formation of teeth.
  B) Decay is inhibited due to neutralization of organic acids produced by bacteria on the teeth.
  C) Decay is reduced due to the inhibitory effects of fluoride on growth of bacteria on the teeth.
  D) Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay.

Q. 2

What best describes the action of immune checkpoint inhibitors?
 A) blocking proteins that prevent the immune system from attacking cancer cells
  B) attacking immune host cells in transplanted tissue
  C) producing new white blood cells from the bone marrow
  D) preventing cancer by enhancing immune responses

Q. 3

Which characteristic is shared by copper and fluoride?
 A) Both may be obtained from drinking tap water.
  B) Both serve as cofactors for a number of enzymes.
  C) Neither is involved in the integrity of bones and teeth.
  D) Neither is known to be toxic at intakes of 10 times the estimated safe and adequate dietary intake.

Q. 4

Hematopoietic stem cell transplants can be used as a primary treatment for ____.
 A) leukemia
  B) gliomas
  C) pancreatic cancer
  D) breast cancer

Q. 5

What is the most likely cause of manganese toxicity?
 A) consumption of supplements
  B) increased absorption due to genetic defect
  C) inhalation of dust contaminated with manganese
  D) consumption of foods grown on manganese-rich soils

Q. 6

Radiation enteritis is inflammation of the ____ cells.
 A) skin
  B) epithelial
  C) intestinal
  D) beta

Q. 7

Which meat would be the best source of copper?
 A) chicken
  B) shellfish
  C) beefsteak
  D) hamburger
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2 Replies
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Answer verified by a subject expert
wrote...
Posts: 447
Rep: 0 0
A year ago
Answer to #1

D

Answer to #2

A

Answer to #3

A

Answer to #4

A

Answer to #5

C

Answer to #6

C

Answer to #7

B
1
Related Topics
wrote...
2 weeks ago
The answers are arranged in order: 
1.  D   
2. A    ( Immune checkpoints  refer to a kind of molecules mainly expressed on the T cells , which keep T cells from over-activating thus preventing exceesive immunity. However, immune checkpoint inhibitors act as off switch that suppress the activity of immune checkpoints, releasing immune brake thereby reactivating T cells and enhancing anti-tumor immune response. If you want to learn  about more related knowledge, you can read theses articles( https://www.cusabio.com/c-20762.html  and https://www.cusabio.com/c-20761.html).
3. A
4. A
5. C
6. C
7.  B
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