Q: Which of the following equations correctly represents the relationship for osmolarity?

$$Osmolarity = \frac{\text{total moles of solute particles}}{\text{volume of solution}}$$

Question 1

Which organelle is primarily responsible for producing ATP through cellular respiration, and is often referred to as the 'powerhouse of the cell'?

Accepted Answer

Mitochondria

Question 2

The plasma membrane is described as a bilayer composed mainly of which type of molecule?

Accepted Answer

Phospholipids

Question 3

Which of the following best describes the function of the rough endoplasmic reticulum (RER)?

Accepted Answer

Synthesis of membrane-bound and secreted proteins

Question 4

A red blood cell placed in a container of distilled water will ________ water via ________.

Accepted Answer

Gain; osmosis

Question 5

Which of the following cell types does NOT contain a nucleus at maturity?

Accepted Answer

Red blood cells

Question 6

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Modification, sorting, and packaging of proteins

Question 7

What is the main difference between simple diffusion and facilitated diffusion across the plasma membrane?

Accepted Answer

Facilitated diffusion uses membrane proteins to transport molecules.

Question 8

Which of the following best describes the structure of a phospholipid in the plasma membrane?

Accepted Answer

Polar hydrophilic head and nonpolar hydrophobic tail

Question 9

Cells that use a great deal of energy, such as skeletal muscle cells, would likely have increased quantities of which organelle?

Accepted Answer

Mitochondria

Question 10

Which of the following statements about active transport is correct?

Accepted Answer

It requires energy in the form of ATP.

Question 11

Which organelle contains digestive enzymes and is responsible for breaking down waste materials and cellular debris?

Accepted Answer

Lysosome

Question 12

Which of the following is NOT a function of membrane proteins?

Accepted Answer

ATP synthesis

Question 13

The cytoskeleton is composed of ________ linked together to form rods in the cell.

Accepted Answer

Proteins

Question 14

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

Accepted Answer

S phase

Question 15

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

Accepted Answer

Osmosis

Question 16

Which of the following equations correctly represents the relationship for osmolarity?

Accepted Answer

$$Osmolarity = \frac{	ext{total moles of solute particles}}{	ext{volume of solution}}$$

Question 17

Which of the following factors will increase the rate of simple diffusion across a membrane?

Accepted Answer

Increasing concentration gradient

Question 18

Which structure is responsible for synthesizing ribosomal RNA (rRNA) within the nucleus?

Accepted Answer

Nucleolus

Question 19

Which of the following best describes semiconservative replication of DNA?

Accepted Answer

Each new DNA molecule consists of one old strand and one new strand.

Question 20

Which of the following cell surface structures increases surface area for absorption?

Accepted Answer

Microvilli

Cell Structure, Membrane Transport, and Cell Cycle: Study Notes for Anatomy & Physiology

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