Question 1

Which of the following statements best describes the amphipathic nature of phospholipids in biological membranes?

Accepted Answer

Phospholipids have both significant polar and nonpolar regions, allowing them to form bilayers in water.

Question 2

A scientist wants to observe the surface details of a virus particle. Which microscope should they use and why?

Accepted Answer

Scanning electron microscope, because it provides detailed 3D images of surfaces.

Question 3

Which organelle is found in plant cells but NOT in animal cells, and is essential for photosynthesis?

Accepted Answer

Chloroplast

Question 4

Which of the following is a correct statement about prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not.

Question 5

Which equation correctly represents the process of cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy}$$

Question 6

A cell is observed to have a capsule and pili. Which type of cell is this most likely to be?

Accepted Answer

Prokaryotic cell

Question 7

Which of the following best explains why nonpolar molecules do not dissolve in water?

Accepted Answer

Nonpolar molecules are hydrophobic and do not form hydrogen bonds with water.

Question 8

Which organelle is responsible for packaging and transporting proteins within a eukaryotic cell?

Accepted Answer

Golgi apparatus

Question 9

Which of the following is NOT a function of microtubules in eukaryotic cells?

Accepted Answer

Synthesizing proteins

Question 10

A multicellular organism is classified in the Kingdom Plantae. Which of the following features would you expect to find in its cells?

Accepted Answer

Cell wall, chloroplasts, and large central vacuole

Question 11

Which of the following best describes the function of nuclear pores in eukaryotic cells?

Accepted Answer

They allow the transport of molecules between the nucleus and cytoplasm.

Question 12

Which of the following statements about the endomembrane system is correct?

Accepted Answer

It consists of interconnected membranes that transport and modify proteins and lipids.

Question 13

Which of the following is a correct definition of resolving power in microscopy?

Accepted Answer

The ability to distinguish two close objects as separate.

Question 14

Which of the following organelles is found in animal cells but NOT in plant cells?

Accepted Answer

Lysosome

Question 15

A researcher is studying the internal structure of mitochondria. Which part of the mitochondrion is the site of the Krebs cycle?

Accepted Answer

Matrix

Question 16

Which of the following is a correct statement about the cell theory?

Accepted Answer

All living things are made of cells, and all cells arise from pre-existing cells.

Question 17

Which of the following best describes the function of the endoplasmic reticulum?

Accepted Answer

It synthesizes proteins and lipids and transports them within the cell.

Question 18

Which of the following is a feature shared by both prokaryotic and eukaryotic cells?

Accepted Answer

Presence of a plasma membrane

Question 19

Which of the following best explains why a transmission electron microscope is used to study the internal structure of cells?

Accepted Answer

It provides high magnification and can visualize internal cell structures in thin sections.

Question 20

Which of the following best describes the role of grana in chloroplasts?

Accepted Answer

Grana are stacks of thylakoids where the light-dependent reactions of photosynthesis occur.

A Tour of the Cell: Study Guide and Key Concepts

Study Guide - Practice Questions