Question 1

Which type of microscopy would be most appropriate for observing the movement of living amoeboid cells in real time?

Accepted Answer

Light microscopy

Question 2

Which of the following is a key structural difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus enclosed by a membrane

Question 3

The plasma membrane is described as a selectively permeable phospholipid bilayer. Which part of the phospholipid molecule faces the cytosol and extracellular fluid?

Accepted Answer

Hydrophilic heads

Question 4

Which organelle is primarily responsible for the synthesis and modification of proteins that are to be secreted from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 5

A scientist wants to study the 3D surface structure of a pollen grain. Which type of microscopy should they use?

Accepted Answer

Scanning electron microscopy

Question 6

Which cellular structure is responsible for ATP production through cellular respiration?

Accepted Answer

Mitochondrion

Question 7

Which cytoskeletal component is involved in muscle contraction and the formation of the cleavage furrow during cell division?

Accepted Answer

Microfilaments (actin filaments)

Question 8

Which of the following structures is found only in plant cells and is responsible for converting solar energy into chemical energy?

Accepted Answer

Chloroplast

Question 9

The endosymbiont theory explains the origin of mitochondria and chloroplasts. Which piece of evidence best supports this theory?

Accepted Answer

Both organelles contain circular DNA similar to prokaryotes

Question 10

Which extracellular structure in animal cells prevents the leakage of extracellular fluid across a layer of cells?

Accepted Answer

Tight junctions

Question 11

A mutation disrupts the function of the Golgi apparatus in a cell. Which process would be most directly affected?

Accepted Answer

Modification and packaging of proteins

Question 12

Which formula correctly represents the surface area ($SA$) of a spherical cell with radius $r$?

Accepted Answer

$SA = 4 \pi r^2$

Question 13

Which organelle contains hydrolytic enzymes for intracellular digestion?

Accepted Answer

Lysosome

Question 14

Which cytoskeletal element is primarily responsible for the movement of vesicles and organelles within a cell?

Accepted Answer

Microtubules

Question 15

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

Protein synthesis

Question 16

Which cell junction allows the passage of ions and small molecules between adjacent animal cells?

Accepted Answer

Gap junctions

Question 17

A cell is observed to have a large central vacuole, a cell wall, and chloroplasts. Which type of organism does this cell most likely belong to?

Accepted Answer

Plant

Question 18

Which of the following best describes the function of intermediate filaments?

Accepted Answer

Maintaining cell shape and anchoring organelles

Question 19

Which structure is responsible for organizing microtubules during cell division in animal cells?

Accepted Answer

Centrosome

Question 20

Which of the following statements about ribosomes is correct?

Accepted Answer

Ribosomes are the site of protein synthesis

Cell Structure and Function: Study Notes for General Biology (chapter 4)

Study Guide - Practice Questions

Study Guide - Flashcards