$$\text{Net movement: HI [H_2O] \rightarrow LO [H_2O]}$$

$$\text{[HI] \rightarrow [LO]}$$

Question 1

Which component of the cell membrane is responsible for its 'fluid-mosaic' nature, allowing proteins to move within a sea of lipids?

Accepted Answer

Phospholipid bilayer with amphipathic properties

Question 2

A cell placed in a hypertonic solution will most likely:

Accepted Answer

Lose water and shrink

Question 3

Which organelle is primarily responsible for packaging proteins for export from the cell?

Accepted Answer

Golgi apparatus

Question 4

During aerobic respiration, how many ATP molecules are produced per glucose molecule?

Accepted Answer

36-38 ATP

Question 5

Which process involves the movement of small molecules from low concentration to high concentration across the plasma membrane, requiring energy?

Accepted Answer

Active transport

Question 6

A mutation in the gene encoding actin would most directly affect which cellular structure?

Accepted Answer

Microfilaments

Question 7

Which equation best represents the net movement of water during osmosis?

Accepted Answer

$$	ext{Net movement: HI [H_2O] ightarrow LO [H_2O]}$$

Question 8

Which step in protein synthesis occurs in the nucleus and involves the creation of mRNA from DNA?

Accepted Answer

Transcription

Question 9

If a cell is actively secreting hormones, which process is most likely being used?

Accepted Answer

Exocytosis

Question 10

Which of the following best describes the amphipathic nature of phospholipids in the cell membrane?

Accepted Answer

Head is hydrophilic and tail is hydrophobic

Question 11

A patient with a genetic defect in lysosomal enzymes is likely to experience which cellular problem?

Accepted Answer

Accumulation of undigested cellular waste

Question 12

Which cellular process is described by the equation $$	ext{Glucose} ightarrow 	ext{Pyruvic acid}$$ and occurs in the cytoplasm?

Accepted Answer

Glycolysis

Question 13

Which structure is responsible for forming the spindle during cell division?

Accepted Answer

Centrioles

Question 14

In receptor-mediated endocytosis, what is the primary advantage over other forms of endocytosis?

Accepted Answer

It is highly specific for certain molecules

Question 15

Which of the following is TRUE regarding mitosis and meiosis?

Accepted Answer

Mitosis is asexual and results in two identical cells; meiosis is sexual and results in four different cells

Question 16

Which equation best represents the direction of passive diffusion across a membrane?

Accepted Answer

$$	ext{[HI] ightarrow [LO]}$$

Question 17

A cell with defective smooth endoplasmic reticulum would have difficulty with which function?

Accepted Answer

Lipid synthesis and detoxification

Question 18

Which of the following is a universal feature of the genetic code?

Accepted Answer

The code is triplet, degenerate, and universal

Question 19

During cell division, which phase is characterized by the alignment of chromosomes at the cell's equator?

Accepted Answer

Metaphase

Question 20

A cell exposed to a toxin that inhibits ATP production will be unable to perform which of the following?

Accepted Answer

Active transport

Structure and Function of the Cell: Comprehensive Study Notes

Study Guide - Practice Questions