Biology Practice Question and Answer

Q: What organelle carries out photosynthesis? 1255 0

  • 1
    Chloroplasts
    Correct
    Wrong
  • 2
    Ribosomes
    Correct
    Wrong
  • 3
    Chromosomes
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 1. "Chloroplasts"
Explanation :

Answer: A) Chloroplasts Explanation: Chloroplasts contains chlorophyll, the green substance in plants that allows them to create food from carbon dioxide and water called as photosynthesis.

Q: Daydreaming, Meditation, Intoxication, Sleep and Hypnosis are all types of 2083 0

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    waking consciousness
    Correct
    Wrong
  • 2
    self-absorption
    Correct
    Wrong
  • 3
    altered states of consciousness
    Correct
    Wrong
  • 4
    self-awareness
    Correct
    Wrong
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Answer : 3. "altered states of consciousness"
Explanation :

Answer: C) altered states of consciousness Explanation: Consciousness is the state or quality of awareness, or, of being aware of an external object or something within oneself.   Day dreaming, Meditation, Intoxication, Sleep and Hypnosis are all types of altered states of consciousness . In al these states, a person's state of conscious is altered but he has consciousness.

Q: Which of the following is not a prime cost? 2072 0

  • 1
    Supervisor's wages
    Correct
    Wrong
  • 2
    Assembly line wages
    Correct
    Wrong
  • 3
    Machine operators wages
    Correct
    Wrong
  • 4
    Direct labor wages
    Correct
    Wrong
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Answer : 1. "Supervisor's wages"
Explanation :

Answer: A) Supervisor's wages Explanation: The prime cost calculates the use of raw materials and direct labor, but does not factor in indirect expenses, such as advertising and administrative costs. Supervisor's wages doesn;t come under prime cost.

Q: Photosynthesis contributes to plant growth by 1938 0

  • 1
    taking in carbon dioxide and making carbohydrates (sugars)
    Correct
    Wrong
  • 2
    converting sugar to oxygen and water
    Correct
    Wrong
  • 3
    taking in oxygen and making wood
    Correct
    Wrong
  • 4
    synthesizing carbon dioxide and making cellulose
    Correct
    Wrong
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Answer : 1. "taking in carbon dioxide and making carbohydrates (sugars)"
Explanation :

Answer: A) taking in carbon dioxide and making carbohydrates (sugars) Explanation: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.

Q: What is a single celled organism called 1182 0

  • 1
    protoctists
    Correct
    Wrong
  • 2
    chromosomes
    Correct
    Wrong
  • 3
    unicellular
    Correct
    Wrong
  • 4
    bicellular
    Correct
    Wrong
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Answer : 3. "unicellular"
Explanation :

Answer: C) unicellular Explanation: An organism is a living thing, and there are two broad categories of organisms: those made up of only a single cell, and those made up of multiple cells. Single-celled organisms means which contains only one cell are called unicellular organisms. 'Uni-' means 'one,' so the name 'unicellular' literally means 'one cell.'   Examples of Unicellular or Single celled organisms ::   Prokaryotic organisms like Bacteria,... Some algae like green algae, euglena,...

Q: Which of the following is true of kinetochores? 3654 0

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    They are the primary centrosome structures that maintain the attachment of the sister chromatids prior to mitosis.
    Correct
    Wrong
  • 2
    They are the sites at which microtubules attach to chromosomes.
    Correct
    Wrong
  • 3
    They are located at the center of the centrosome and organize tubulin into spindle fibers.
    Correct
    Wrong
  • 4
    They cross at the cell's equator and move against each other, causing the cell to elongate.
    Correct
    Wrong
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Answer : 2. "They are the sites at which microtubules attach to chromosomes."
Explanation :

Answer: B) They are the sites at which microtubules attach to chromosomes. Explanation: They are the sites at which microtubules attach to chromosomes.

Q: What process immediately preceeded protein synthesis at the ribosome? 1742 0

  • 1
    transcription
    Correct
    Wrong
  • 2
    replication
    Correct
    Wrong
  • 3
    translation
    Correct
    Wrong
  • 4
    duplication
    Correct
    Wrong
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Answer : 1. "transcription"
Explanation :

Answer: A) transcription Explanation: Protein synthesis at the ribosome is immediately preceeded by the transcription process.

Q: In what organelle does cellular respiration take place? 1230 0

  • 1
    Cytoplasm
    Correct
    Wrong
  • 2
    Ribosomes
    Correct
    Wrong
  • 3
    Mitochondria
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Mitochondria"
Explanation :

Answer: C) Mitochondria Explanation: Cellular respiration is the multi-step process that creates energy from nutrients and food molecules. It begins in the cytoplasm of the cell, with the mitochondria functioning as the main organelle where the rest of the process continues and finishes. During respiration, glycolysis occurs in the cytoplasm of the cell.

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