Question 1

Which statement best describes the principle of complementarity as it applies to cell structure and function?

Accepted Answer

The shape and structure of a cell are directly related to its specific function.

Question 2

A red blood cell (erythrocyte) is specialized for oxygen transport. Which structural feature enables this function?

Accepted Answer

Large surface area and biconcave shape to facilitate gas exchange.

Question 3

Which organelle is responsible for producing ATP and contains its own DNA, inherited only from the mother?

Accepted Answer

Mitochondrion

Question 4

A cell is placed in a solution with a higher solute concentration than the cell's cytoplasm. What will happen to the cell?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Question 5

Which type of membrane transport requires energy and moves substances against their concentration gradient?

Accepted Answer

Primary active transport

Question 6

What is the main function of the Golgi apparatus in a cell?

Accepted Answer

Packaging, modifying, and sorting substances for secretion or use within the cell

Question 7

Which equation best represents the movement of solute particles during simple diffusion?

Accepted Answer

$$\Delta C = C_{high} - C_{low}$$

Question 8

A cell uses receptor-mediated endocytosis to take in LDL cholesterol. Which process is this an example of?

Accepted Answer

Vesicular transport

Question 9

Which plasma membrane specialization increases surface area for absorption, such as in the small intestine?

Accepted Answer

Microvilli

Question 10

During protein synthesis, what is the correct sequence of events?

Accepted Answer

Transcription in the nucleus followed by translation in the cytoplasm

Question 11

Which type of intercellular junction prevents substances from passing between adjacent cells, such as in the gastrointestinal tract?

Accepted Answer

Tight junctions

Question 12

If a cell is placed in a hypotonic solution, what is the expected outcome?

Accepted Answer

Water will move into the cell, causing it to swell.

Question 13

Which organelle contains hydrolytic enzymes and is responsible for breaking down waste materials within the cell?

Accepted Answer

Lysosome

Question 14

What is the main function of the sodium-potassium pump ($$Na^+/K^+$$ ATPase) in cells?

Accepted Answer

To maintain the electrochemical gradients by pumping $$Na^+$$ out and $$K^+$$ into the cell using ATP

Question 15

Which process describes the movement of water across a selectively permeable membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 16

Which equation represents the net movement of water during osmosis?

Accepted Answer

$$J_{water} = k (C_{solute,solution} - C_{solute,cell})$$

Question 17

Which type of membrane transport is used when glucose enters a cell via a specific carrier protein, without energy input?

Accepted Answer

Facilitated diffusion

Question 18

Which cell structure is responsible for synthesizing ribosomes?

Accepted Answer

Nucleolus

Question 19

During mitosis, what is the result after one complete cell division in somatic cells?

Accepted Answer

Two genetically identical daughter cells

Question 20

Which plasma membrane component acts as an 'ID tag' for cell recognition, often important for immune function?

Accepted Answer

Glycoproteins

Cells: Components and Functions – Study Notes

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