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- Question
Which of the following is true of a scientific theory?
Options- A. It is only accepted after the person who came up with it has died.
- B. It is a method or device that applies scientific knowledge for some specific purpose.
- C. It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope.
- D. It must demonstrate the effect of one variable by testing control groups and experimental groups.
- Correct Answer
- It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope.
ExplanationA scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. Scientific theories are not ever proved in the sense of being proved to be 100% correct.
Examples of some scientific theories are ::
Evolution, gravity, atomic theory, the germ theory of disease, relativity, quantum theory, electromagnetic theory, layered Earth theory, etc...
- 1. Which of the following is a property of water?
Options- A. High polarity
- B. Universal solvent
- C. High specific heat
- D. All of the above Discuss
- 2. A homogeneous mixture is also called
Options- A. Compound
- B. Pure substance
- C. Solution
- D. None of the above Discuss
- 3. Which type of doctor specializes in teeth and jaw alignment?
Options- A. Orthodontist
- B. Pediatrician
- C. Psychiatrist
- D. Oncologist Discuss
- 4. The main products of photosynthesis are
Options- A. Oxygen
- B. Sugar
- C. Both A & B
- D. Carbon dioxide Discuss
- 5. Which of the following statements about water is false?
Options- A. There is extensive intramolecular hydrogen bonding in the condensed phase.
- B. Water is oxidized to oxygen during photosynthesis.
- C. Ice formed by heavy water sinks in normal water.
- D. Water can act both as an acid and as a base. Discuss
- 6. A protein that acts as a hormone is
Options- A. Estrogen
- B. Insulin
- C. Both A & B
- D. None of the above Discuss
- 7. Human gametes are produced by
Options- A. Mitosis
- B. Meiosis
- C. Replication
- D. None of the above Discuss
- 8. Where does transcription occur in the cell?
Options- A. Cytoplasm
- B. Nucleus
- C. Ribosome
- D. None of the above Discuss
- 9. Condition of decreased oxygen in the blood
Options- A. Hematemesis
- B. Hypercapnia
- C. Hemoptysis
- D. Hypoxemia Discuss
- 10. Free-floating anxiety refers to anxiety that is
Options- A. unrelated to any realistic, known source
- B. related to a specific event
- C. related to a realistic source
- D. related to a specific object Discuss
General Science problems
Search Results
Correct Answer: All of the above
Explanation:
Yes, we know that water is a universal solvent.
Water can moderate temperature because of the two properties: high-specific heat and the high heat of vaporization.
Water is a polar molecule that has a high level of polarity and attraction to ions and other polar molecules.
Hence, all the above given options are the properties of water.
Correct Answer: Solution
Explanation:
A homogeneous mixture is also called as solution.
The term "solution" is more frequently used when a homogeneous mixture is a liquid, although it is sometimes used if the homogeneous mixture is a gas.
Another name for a solid homogeneous mixture of metals is an alloy.
Correct Answer: Orthodontist
Explanation:
An orthodontist is the type of doctor that specializes in teeth and jaw alignment. When the teeth don't align properly, it can cause uneven wear in the teeth.
The jaw is a hinge joint. Strong muscles in the face open and close the jaw. Teeth are implanted in the jaw and serve to rip, tear and crush food in preparation for swallowing it.
Correct Answer: Both A & B
Explanation:
The two main products of photosynthesis are sugar and oxygen. Oxygen is emitted as waste product and sugar is used for energy preparation using sun light.
Correct Answer: There is extensive intramolecular hydrogen bonding in the condensed phase.
Explanation:
Water possess intermolecular hydrogen bonding in the condensed phase.
Hence, the given statement 'There is extensive intramolecular hydrogen bonding in the condensed phase.' about water is FALSE.
Correct Answer: Insulin
Correct Answer: Meiosis
Explanation:
In humans all reproduction is sexual. It involves joining together haploid gamete cells from each parent with half the normal number of chromosomes to make a new cell containing both parents' genetic material. This is a diploid zygote. The cells from each parent that combine to form the zygote are called gametes.
Meiosis produces haploid gametes from a diploid parental cell.
Correct Answer: Nucleus
Explanation:
Transcription is a process of production of mRNA which occurs in the nucleus of the cell. After transcription, translation which occurs in the cytoplasm.
Correct Answer: Hypoxemia
Explanation:
Oxygen deficiency or decreased oxygen levels in the blood is a condition known as Hypoxemia.
Hypercapnia means High carbon dioxide levels in the blood.
Correct Answer: unrelated to any realistic, known source
Explanation:
Free floating anxiety is also known as Generalised Anxiety Disorder in which the individual may be unable to identify specific triggers for the anxiety.
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