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- Question
Which of the following is not a function of saliva?
Options- A. contains fluoride to harden the tooth enamel
- B. moistens food and helps stick it together to make it easier to swallow
- C. begins the chemical breakdown of starches
- D. helps clean the mouth
- Correct Answer
- contains fluoride to harden the tooth enamel
ExplanationSaliva is produced by the salivary gland which helps in food digestion.
Option A) contains fluoride to harden the tooth enamel is not the function of saliva.
- 1. What process never occurs in interphase? Discuss
- 2. Which best matches the description with the genetic material?
Options- A. Chromosomes are located in the cytoplasm.
- B. DNA is located in the nucleus.
- C. Nucleotides form a helical structure that is called a gene.
- D. Chromosomes create genes. Discuss
- 3. Which of the following occurred in the presence of tetrodotoxin?
Options- A. The number of action potentials decreased.
- B. The size of the action potential increased.
- C. The number of action potentials increased.
- D. The size of the action potential decreased. Discuss
- 4. The NADPH required for the calvin cycle comes from
Options- A. Reactions initiated in photosystem 1
- B. Citric acid cycle
- C. Reactions initiated in photosystem 2
- D. Glycolysis Discuss
- 5. The term aerotolerant anaerobe refers to an organism that
Options- A. uses oxygen or grows without oxygen.
- B. requires more oxygen than is present in air.
- C. does not use oxygen but tolerates it.
- D. requires less oxygen than is present in air. Discuss
- 6. Floridian starch is characteristic energy storage material of which algae?
Options- A. Blue green algae
- B. Brown algae
- C. Red algae
- D. Green algae Discuss
- 7. Most bacteria reproduce by
Options- A. budding
- B. binary fission
- C. fragmentation
- D. mitosis Discuss
- 8. Which best describes somatic mutations?
Options- A. transmitted to progeny
- B. not transmitted to progeny
- C. Can't be identified
- D. None of the above Discuss
- 9. What organelle carries out photosynthesis?
Options- A. Chloroplasts
- B. Ribosomes
- C. Chromosomes
- D. All of the above Discuss
- 10. Most of the oxygen transported by the blood is
Options- A. bound to hemoglobin
- B. dissolved in plasma
- C. dissolved in water
- D. in ionic form as solute in plasma Discuss
Biology problems
Search Results
Correct Answer: Absence of cell division is the process that never comes in interphase
Correct Answer: DNA is located in the nucleus.
Explanation:
DNA is the genetic material in the cell.
Hence, option B) DNA is located in the nucleus best matches the description with the genetic material.
Correct Answer: The number of action potentials decreased.
Correct Answer: Reactions initiated in photosystem 2
Explanation:
ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. The Calvin cycle is similar to the Krebs cycle in that the starting material is regenerated by the end of the cycle.
Correct Answer: does not use oxygen but tolerates it.
Correct Answer: Red algae
Explanation:
The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.
Correct Answer: binary fission
Explanation:
Most bacteria is reproduce by binary fission.
Correct Answer: transmitted to progeny
Explanation:
The best example for somatic mutation would be cancer, familial cancer (which transmits through gametes to the next generation) are not so common while sporadic cancer is seen the most where body cells of a particular area goes through mutations for a number of years and becomes cancerous, but it is not transmitted to next generation.
Correct Answer: Chloroplasts
Explanation:
Chloroplasts contains chlorophyll, the green substance in plants that allows them to create food from carbon dioxide and water called as photosynthesis.
Correct Answer: bound to hemoglobin
Explanation:
Oxygen is transported throughout the body via hemoglobin in the red blood cells. Hence, most of the oxygen transported by the blood is bounded to hemoglobin.
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