Cell Membrane Structures and Functions Quiz
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Questions and Answers

Where are peroxisomes mostly seen?

  • In the mitochondria
  • In the nucleus
  • In the liver and kidneys (correct)
  • In the Golgi apparatus

What is the function of lysosomes in a cell?

  • Digest foreign substances and dead cells (correct)
  • Produce energy for the cell
  • Facilitate movement of particles in the cell
  • Store genetic material

What is the function of rough endoplasmic reticulum?

  • Synthesize lipids
  • Synthesize proteins (correct)
  • Package lysosomes
  • Produce energy

Which organelle is known as the 'powerhouse' of the cell?

<p>Mitochondria (A)</p> Signup and view all the answers

What is the main function of nuclear pores in a cell?

<p>Regulate passage of substances in and out of the nucleus (C)</p> Signup and view all the answers

Which cytoskeletal component is responsible for cell movement?

<p>Microfilaments (C)</p> Signup and view all the answers

What is considered the basic living unit of all organisms?

<p>Cells (D)</p> Signup and view all the answers

Which organelle is known as the command/control center of the cell?

<p>Nucleus (D)</p> Signup and view all the answers

Which molecules act as receptor molecules in the cell membrane?

<p>Proteins (A)</p> Signup and view all the answers

What is the function of cholesterol in the cell membrane?

<p>Controls fluidity (D)</p> Signup and view all the answers

What is the function of nuclear pore in a cell?

<p>Controls movement of nucleus and cytoplasm (C)</p> Signup and view all the answers

Where does rRNA synthesis occur in a cell?

<p>Nucleolus (A)</p> Signup and view all the answers

In hypertonic solutions, cells tend to:

<p>Shrink (D)</p> Signup and view all the answers

Which type of transport requires energy or ATP?

<p>Active Transport (B)</p> Signup and view all the answers

What is the primary difference between Primary and Secondary active transport?

<p>Primary Transport uses ATP directly, Secondary Transport does not use ATP (D)</p> Signup and view all the answers

What type of transport involves the movement of large particles across membranes?

<p>Endocytosis (A)</p> Signup and view all the answers

Which type of endocytosis occurs when specific substances bind to proteins before being transported into the cell?

<p>Receptor endocytosis (D)</p> Signup and view all the answers

What is the term for the process where substances are ejected out of the cell?

<p>Exocytosis (B)</p> Signup and view all the answers

What is the main function of microvilli in the intestines?

<p>To increase surface area for absorption (C)</p> Signup and view all the answers

Which statement best describes passive transport?

<p>Occurs without the need for energy, moving substances from high to low concentration (B)</p> Signup and view all the answers

What term is used to describe the movement of water from an area of high concentration to low concentration?

<p>Osmosis (C)</p> Signup and view all the answers

What is the role of aquaporins in cell transport?

<p>Facilitating the diffusion of water molecules (C)</p> Signup and view all the answers

What types of substances does interstitial fluid outside the cells typically contain?

<p>Amino acids, sugars, fatty acids, vitamins, hormones, salts, and waste (B)</p> Signup and view all the answers

What is the key characteristic of selective permeability in cell membranes?

<p>Only permits specific substances to enter or exit the cell (C)</p> Signup and view all the answers

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