Question 1

Which organelle is primarily responsible for producing ATP, the main energy currency of the cell?

Accepted Answer

Mitochondria

Question 2

A cell in the lining of the respiratory tract uses cilia to move mucus. What is the main function of cilia in this context?

Accepted Answer

Propel substances along the cell surface

Question 3

Which cellular structure acts as a 'security guard,' controlling what enters and leaves the cell?

Accepted Answer

Cell membrane

Question 4

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 5

Which organelle modifies, packages, and ships proteins and lipids within the cell?

Accepted Answer

Golgi apparatus

Question 6

A patient’s muscle cells are found to have abnormally low numbers of mitochondria. What is the most likely consequence?

Accepted Answer

Reduced energy production and muscle weakness

Question 7

Which process describes the movement of water molecules across a semipermeable membrane from low to high solute concentration?

Accepted Answer

Osmosis

Question 8

What is the main function of ribosomes in the cell?

Accepted Answer

Synthesize proteins

Question 9

Which cell surface structure increases the surface area for absorption, especially in the small intestine?

Accepted Answer

Microvilli

Question 10

Which type of cell junction is found in the blood-brain barrier and creates a waterproof seal between cells?

Accepted Answer

Tight junction

Question 11

A cell is observed to have a large number of lysosomes. What is the most likely function of this cell?

Accepted Answer

Breakdown of waste materials

Question 12

Which organelle is described as the 'recycling center' of the cell, detoxifying harmful substances?

Accepted Answer

Peroxisome

Question 13

What is the main difference between mitosis and meiosis in terms of the genetic makeup of daughter cells?

Accepted Answer

Mitosis produces identical cells; meiosis produces genetically unique cells

Question 14

Which equation best represents the production of ATP in mitochondria during cellular respiration?

Accepted Answer

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

Question 15

Which transport mechanism requires energy and moves substances from low to high concentration?

Accepted Answer

Active transport

Question 16

A mutation prevents the formation of protein channels in a cell’s membrane. Which process would be most directly affected?

Accepted Answer

Facilitated diffusion

Question 17

Which phase of the cell cycle involves cellular division, including the steps of prophase, metaphase, anaphase, and telophase?

Accepted Answer

M phase

Question 18

Why is DNA replication described as 'semi-conservative'?

Accepted Answer

Each new DNA molecule contains one original and one new strand

Question 19

Which enzyme is responsible for unwinding the DNA helix during replication?

Accepted Answer

Helicase

Question 20

A cell in the kidney is observed to move water molecules from an area of low solute concentration to high solute concentration. Which process is this?

Accepted Answer

Osmosis

Human Cell Structure, Function, and Processes: Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드