Cell Membrane Structures and Functions Quiz

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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?

Mitochondria Signup and view all the answers

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

Regulate passage of substances in and out of the nucleus Signup and view all the answers

Which cytoskeletal component is responsible for cell movement?

Microfilaments Signup and view all the answers

What is considered the basic living unit of all organisms?

Cells Signup and view all the answers

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

Nucleus Signup and view all the answers

Which molecules act as receptor molecules in the cell membrane?

Proteins Signup and view all the answers

What is the function of cholesterol in the cell membrane?

Controls fluidity Signup and view all the answers

What is the function of nuclear pore in a cell?

Controls movement of nucleus and cytoplasm Signup and view all the answers

Where does rRNA synthesis occur in a cell?

Nucleolus Signup and view all the answers

In hypertonic solutions, cells tend to:

Shrink Signup and view all the answers

Which type of transport requires energy or ATP?

Active Transport Signup and view all the answers

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

Primary Transport uses ATP directly, Secondary Transport does not use ATP Signup and view all the answers

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

Endocytosis Signup and view all the answers

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

Receptor endocytosis Signup and view all the answers

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

Exocytosis Signup and view all the answers

What is the main function of microvilli in the intestines?

To increase surface area for absorption Signup and view all the answers

Which statement best describes passive transport?

Occurs without the need for energy, moving substances from high to low concentration 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?

Osmosis Signup and view all the answers

What is the role of aquaporins in cell transport?

Facilitating the diffusion of water molecules Signup and view all the answers

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

Amino acids, sugars, fatty acids, vitamins, hormones, salts, and waste Signup and view all the answers

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

Only permits specific substances to enter or exit the cell Signup and view all the answers