Q: Which organelle is primarily responsible for the synthesis of ATP during cellular respiration, and what is the equation for this process?

Mitochondrion; $$\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{ATP}$$

Q: A patient with cystic fibrosis has abnormally thick secretions in the airways. Which cell transport process is most directly affected, and what ion is involved?

Active transport; chloride ion ($$\text{Cl}^-)$$

Q: During osmosis, water moves across a selectively permeable membrane. Which equation best represents the net movement of water?

$$\text{Net movement of water} = \text{from low solute concentration to high solute concentration}$$

Q: Which process requires energy from ATP to move ions against their concentration gradient, and what is the equation for the sodium-potassium pump?

Active transport; $$3\text{Na}^+ \text{ out}, 2\text{K}^+ \text{ in}, \text{ATP} \rightarrow \text{ADP} + \text{P}$$

Question 1

Which organelle is primarily responsible for the synthesis of ATP during cellular respiration, and what is the equation for this process?

Accepted Answer

Mitochondrion; $$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 	ext{ATP}$$

Question 2

A patient with cystic fibrosis has abnormally thick secretions in the airways. Which cell transport process is most directly affected, and what ion is involved?

Accepted Answer

Active transport; chloride ion ($$	ext{Cl}^-)$$

Question 3

Which structure in the cell is responsible for packaging and exporting proteins, and what is the sequence of events for protein export?

Accepted Answer

Golgi apparatus; proteins are assembled by ribosomes, folded in the ER, transported to the Golgi, modified, packaged into vesicles, and exported

Question 4

Which cell extension increases the absorptive surface area of cells, and what is its primary function?

Accepted Answer

Microvilli; increase absorptive surface area

Question 5

During osmosis, water moves across a selectively permeable membrane. Which equation best represents the net movement of water?

Accepted Answer

$$	ext{Net movement of water} = 	ext{from low solute concentration to high solute concentration}$$

Question 6

Which process requires energy from ATP to move ions against their concentration gradient, and what is the equation for the sodium-potassium pump?

Accepted Answer

Active transport; $$3	ext{Na}^+ 	ext{ out}, 2	ext{K}^+ 	ext{ in}, 	ext{ATP} ightarrow 	ext{ADP} + 	ext{P}$$

Question 7

Which stage of mitosis is characterized by the alignment of chromosomes at the cell's equator and attachment of spindle fibers?

Accepted Answer

Metaphase

Question 8

A cell is exposed to a solution with a higher solute concentration outside than inside. What will happen to the cell due to osmosis?

Accepted Answer

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

Question 9

Which organelle contains digestive enzymes and is involved in the breakdown of microbes and cellular debris?

Accepted Answer

Lysosome

Question 10

What is the primary function of the nucleolus within the nucleus?

Accepted Answer

Production of ribosome subunits

Question 11

Which process describes the movement of water and solutes across a membrane due to hydrostatic pressure, and what is a real-life example?

Accepted Answer

Filtration; urine formation in the kidneys

Question 12

Which cell extension is responsible for moving substances across the surface of cells in a coordinated, wavelike fashion?

Accepted Answer

Cilia

Question 13

What is the correct sequence of events in protein synthesis, starting from DNA?

Accepted Answer

Transcription in nucleus, translation in cytoplasm, protein folding in ER

Question 14

Which term describes an increase in the number of cells in a tissue, and what is the equation for tissue size change?

Accepted Answer

Hyperplasia; $$	ext{Tissue size} = 	ext{cell size} 	imes 	ext{number of cells}$$

Question 15

Which process involves the engulfing of large particles or microbes by a cell, and what is its primary function?

Accepted Answer

Phagocytosis; destruction of bacteria and debris

Question 16

What is the role of complementary base pairing in DNA, and which pairs are correct?

Accepted Answer

Adenine pairs with thymine; cytosine pairs with guanine

Question 17

Which type of RNA carries the genetic code from the nucleus to the cytoplasm for protein synthesis?

Accepted Answer

mRNA (messenger RNA)

Question 18

A cell is exposed to radiation that damages its DNA. What is a likely consequence for the cell?

Accepted Answer

Disruption of normal cell function and possible disease

Question 19

Which process describes the copying of genetic information from DNA to mRNA, and where does it occur?

Accepted Answer

Transcription; nucleus

Question 20

Which cell structure is responsible for organizing microtubules and plays a key role in cell division?

Accepted Answer

Centrosome

Chapter 3: Cells – Structure, Function, and Processes

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