General Biology 1 - First Semester (2nd Periodical)
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Questions and Answers

Which type of protein is involved in the passive movement of molecules across the cell membrane via the aid of a membrane protein?

  • Enzymatic proteins
  • Receptor proteins
  • Channel proteins (correct)
  • Carrier proteins

    • Which of the following statements is true about osmosis?

  • Osmosis occurs when there is an imbalance of solutes outside of a cell versus inside the cell. (correct)
  • Osmosis is the movement of solutes across a semi-permeable membrane.
  • Osmosis occurs when there is an equal concentration of solutes inside and outside the cell.
  • Osmosis is the movement of water molecules from an area of lower concentration to an area of higher concentration of water.

    • What happens to cells in a hypertonic solution?

  • Cells in a hypertonic solution will burst.
  • Cells in a hypertonic solution will shrink as water leaves the cell. (correct)
  • Cells in a hypertonic solution will remain the same size.
  • Cells in a hypertonic solution will take on too much water and swell.

    • What is the characteristic of a hypotonic solution?

    <p>A hypotonic solution has a lower concentration of solutes than another solution.</p> Signup and view all the answers

    What is the role of an isotonic solution in maintaining homeostasis?

    <p>An isotonic solution maintains equilibrium by allowing an equal flow of water into and out of the cell.</p> Signup and view all the answers

    Which of the following is true about osmosis?

    <p>Osmosis involves the movement of water molecules from an area of higher concentration to an area of lower concentration</p> Signup and view all the answers

    What happens to cells in a hypertonic solution?

    <p>Cells in a hypertonic solution will shrink as water leaves the cell via osmosis</p> Signup and view all the answers

    What is the role of an isotonic solution in maintaining homeostasis?

    <p>An isotonic solution helps cells maintain equilibrium by allowing an equal flow of water into and out of the cell</p> Signup and view all the answers

    What is the characteristic of a hypotonic solution?

    <p>A hypotonic solution has a lower concentration of solutes than another solution</p> Signup and view all the answers

    What is the characteristic of a hypertonic solution?

    <p>A hypertonic solution has a higher concentration of solutes than another solution</p> Signup and view all the answers

    What is the process by which water molecules move across a semi-permeable membrane from an area of higher concentration to an area of lower concentration of water?

    <p>Osmosis</p> Signup and view all the answers

    What happens to cells in a hypotonic solution?

    <p>They take on too much water and swell</p> Signup and view all the answers

    Which of the following is true about an isotonic solution?

    <p>It has the same concentration of solute and solvent as found inside a cell</p> Signup and view all the answers

    Which process expels material from the cell into the extracellular fluid?

    <p>Exocytosis</p> Signup and view all the answers

    What is the purpose of active transport?

    <p>To move molecules against the concentration gradient</p> Signup and view all the answers

    Which type of bulk transport moves material into a cell from the environment?

    <p>Endocytosis</p> Signup and view all the answers

    What is the process by which cells ingest large particles including other cells?

    <p>Phagocytosis</p> Signup and view all the answers

    What is the targeted version of endocytosis where receptor proteins ensure specifically targeted substances are brought into the cell?

    <p>Receptor-mediated endocytosis</p> Signup and view all the answers

    Which process involves the movement of molecules against the concentration gradient across the cell membrane?

    <p>Active transport</p> Signup and view all the answers

    What is the purpose of exocytosis?

    <p>To expel material from the cell into the extracellular fluid</p> Signup and view all the answers

    Which type of endocytosis is a targeted version where receptor proteins ensure specifically targeted substances are brought into the cell?

    <p>Receptor-mediated endocytosis</p> Signup and view all the answers

    What is the process by which cells ingest large particles including other cells?

    <p>Phagocytosis</p> Signup and view all the answers

    What is the movement of many molecules into or out of the cell in membrane-bound vesicles called?

    <p>Exocytosis</p> Signup and view all the answers

    Which process involves the movement of molecules against the concentration gradient across the cell membrane?

    <p>Active transport</p> Signup and view all the answers

    What is the targeted version of endocytosis where receptor proteins in the plasma membrane ensure specifically targeted substances are brought into the cell?

    <p>Receptor-mediated endocytosis</p> Signup and view all the answers

    Which type of bulk transport moves material into a cell from the environment?

    <p>Endocytosis</p> Signup and view all the answers

    Which elements are present in carbohydrates?

    <p>Carbon, hydrogen, and oxygen</p> Signup and view all the answers

    What is the simplest sugar from which larger carbohydrates are formed?

    <p>Monosaccharide</p> Signup and view all the answers

    Which type of carbohydrate is commercially known as dextrose?

    <p>Glucose</p> Signup and view all the answers

    What is the main function of lipids?

    <p>Store energy</p> Signup and view all the answers

    What type of fatty acids are composed of double bonds and are difficult to be digested?

    <p>Saturated</p> Signup and view all the answers

    Which of the following is NOT a type of carbohydrate?

    <p>Lipid</p> Signup and view all the answers

    Which type of carbohydrate is found in the outer covering of animals such as insects and crustaceans?

    <p>Chitin</p> Signup and view all the answers

    Which of the following is a function of carbohydrates?

    <p>All of the above</p> Signup and view all the answers

    Which type of lipid is composed of double-bonded fatty acids and is difficult to be digested?

    <p>Saturated</p> Signup and view all the answers

    Which of the following is a function of lipids?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is true about monosaccharides?

    <p>They are the simplest sugar from which larger carbohydrates are formed</p> Signup and view all the answers

    Which of the following is NOT a type of disaccharide?

    <p>Cellulose</p> Signup and view all the answers

    Which type of lipid is present in every cell of the human body and is the main part of the cellular membrane?

    <p>Lipids</p> Signup and view all the answers

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