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20 Cards in this Set
- Front
- Back
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Which process describes the movement of material out of a cell in a vesicle?
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Exocytosis
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Which organelles are involved in nuclear division?
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Centrioles
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What is the main constituent of a cell membrane by surface area?
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Phospholipids
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Where is the site of lipid and steroid molecule synthesis?
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Correct Smooth endoplasmic reticulum
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Which factors effect the rate of diffusion?
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Heat,.............
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The perception of pain involves which organ system?
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Nervous
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Which of the following statements is correct concerning human cells in solutions?
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Correct Cells expand in hypotonic solutions
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Which organelle surrounds the nucleus and forms a network studded with ribosomes?
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Correct Rough endoplasmic reticulum
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Which organ system includes the spleen and lymph nodes?
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Correct Lymphatic system
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What is the correct definition of Osmosis?
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Correct Movement of water molecules from a low solute concentration to a high solute concentration through a selectively permeable membrane
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Where is ATP produced in the cell?
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Mitochondria
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Where would you find your genes?
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Correct On molecules of DNA
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What is the site of enzymatic breakdown of phagocytised material in the cell?
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Lysosomes
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Which level of organisation sits between the cellular level and the organ level?
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Tissue
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A cell membrane that allows some materials to pass through freely whilst preventing others is known as:
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Correct Selectively permeable
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Approximately how many genes do humans have?
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Correct 21,000
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What is a concentration gradient?
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Correct Difference in concentration of a substance between two different areas
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Which organelle is responsible for making proteins?
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Correct Ribosomes
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In a sodium-potassium pump, what is the correct outcome of using one molecule of adenosine triphosphate (ATP)?
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Correct Three sodium ions pumped out and two potassium ions pumped in to cell
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Where do we house our DNA?
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Correct Nucleus
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