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- Question
Which gas in the atmosphere is essential for respiration?
Options- A. Argon
- B. Carbon dioxide
- C. Oxygen
- D. Nitrogen
- Correct Answer
- Oxygen
ExplanationInhaling of oxygen and releasing of carbon dioxide to make our living is the process called as respiration. We know that, air is a mixture several gases like 78% of nitrogen, 21% of oxygen and several other gases with watervapour.
Hence, Oxygen is essential for respiration process.
- 1. Which best describes the fossil record?
Options- A. The fossil record provides evidence of a common ancestor to many species
- B. The fossil record is inaccurate because scientists are not able to date fossils
- C. The fossil record cannot provide evidence of evolution
- D. The fossil record provides evidence that disputes the theory of evolution Discuss
- 2. The goals of psychology are to
Options- A. describe the behavior
- B. control the behavior
- C. predict the behavior
- D. All of the above Discuss
- 3. The talk test can be used to measure the
Options- A. Speech frequency
- B. Exercise intensity
- C. Loudness intensity
- D. None of the above Discuss
- 4. Serious dehydration may cause all of the following, EXCEPT
Options- A. muscle cramps
- B. torn ligaments
- C. reduced blood volume
- D. increased heart rate Discuss
- 5. A kind of foliated metamorphic rock
Options- A. slate
- B. gneiss
- C. phyllite
- D. All of the above Discuss
- 6. Which one of the following factors contributes to hypertension?
Options- A. A vigorous exercise regimen
- B. A diet that lacks protein
- C. A high-fat diet
- D. A lack of sleep Discuss
- 7. Demography is the scientific study of
Options- A. Growth of population
- B. The well being of populations
- C. Birth and death of population
- D. All of the above Discuss
- 8. What are proteins made from?
Options- A. Nucleotides
- B. Nucleic acids
- C. Aminoacids
- D. Ethylene Discuss
- 9. Which vitamin is required for hair growth?
Options- A. Vitamin C
- B. Niacin
- C. Biotin
- D. Vitamin D Discuss
- 10. The purpose of defibrillation is to
Options- A. prevent asystole from deteriorating into ventricular fibrillation
- B. stop the chaotic, disorganized contraction of the cardiac cells
- C. cause a rapid decrease in the heart rate of an unstable patient
- D. improve the chance of cardiopulmonary resuscitation (CPR) being successful in resuscitation Discuss
General Science problems
Search Results
Correct Answer: The fossil record provides evidence of a common ancestor to many species
Explanation:
A fossil is a traces or remainings of plants and animals that lived in the past. The fossil record provides evidence of a common ancestor to many species is the option that best describes the fossil record.
Correct Answer: All of the above
Explanation:
The main goals of psychology are four. They are::
1. To describe,
2. To explain,
3. To predict (and)
4. To control the behavior and mental processes of others.
Correct Answer: Exercise intensity
Explanation:
The talk test can be used to measure the Exercise intensity.
Correct Answer: torn ligaments
Correct Answer: All of the above
Correct Answer: A high-fat diet
Explanation:
In the given options, a high-fat diet is the only factor that contributes to hypertension.
Correct Answer: All of the above
Correct Answer: Aminoacids
Explanation:
Proteins are made from chain of aminoacids.
Correct Answer: Biotin
Correct Answer: stop the chaotic, disorganized contraction of the cardiac cells
Explanation:
The purpose of defibrillation is to stop the chaotic, disorganized contraction of the cardiac cells. Defibrillation is a technique used in emergency medicine to terminate ventricular fibrillation or pulseless ventricular tachycardia. It uses an electrical shock to reset the electrical state of the heart so that it may beat to a rhythm controlled by its own natural pacemaker cells.
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