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

Question 1

Which of the following best describes the function of the iris diaphragm on a compound microscope?

Accepted Answer

It adjusts the amount of light that reaches the specimen.

Question 2

A student is viewing a specimen under a compound microscope using a 10X ocular lens and a 40X objective lens. What is the total magnification?

Accepted Answer

$$10 	imes 40 = 400$$

Question 3

Which of the following organelles is present in plant cells but not in animal cells?

Accepted Answer

Chloroplast

Question 4

What is the main advantage of using a transmission electron microscope (TEM) over a light microscope?

Accepted Answer

TEMs provide much higher resolution, allowing visualization of internal cell structures.

Question 5

Which of the following best defines the cell theory?

Accepted Answer

All living things are composed of cells, and all cells come from pre-existing cells.

Question 6

A scientist observes a cell with a cell wall, central vacuole, and chloroplasts. Which type of cell is this most likely to be?

Accepted Answer

Plant cell

Question 7

Which of the following is a similarity between mitochondria and chloroplasts?

Accepted Answer

Both contain their own DNA and are involved in energy conversion.

Question 8

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

It modifies, stores, and repackages products of the endoplasmic reticulum, mostly for secretion.

Question 9

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

Accepted Answer

Eukaryotic cells are generally larger and contain membrane-bound organelles, while prokaryotic cells do not.

Question 10

Which of the following is the correct overall equation for cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy}$$

Question 11

Which of the following best explains why duplicating chromosomes is necessary before cell division?

Accepted Answer

To ensure each daughter cell receives a complete set of genetic information.

Question 12

Which of the following is a key difference between mitosis and meiosis?

Accepted Answer

Mitosis produces genetically identical cells, while meiosis produces genetically diverse gametes.

Question 13

Which of the following best describes the function of lysosomes?

Accepted Answer

They digest macromolecules and recycle cellular components.

Question 14

Which of the following is a correct statement about the three domains of life?

Accepted Answer

Bacteria and Archaea are prokaryotic, while Eukarya are eukaryotic.

Question 15

A student is preparing a wet mount of pond water. Which of the following is the correct sequence of steps?

Accepted Answer

Place a drop of water on the slide, add the specimen, gently lower a cover slip at an angle.

Question 16

Which of the following best describes the term 'hydrophobic' as it relates to the phospholipid bilayer?

Accepted Answer

It refers to the fatty acid tails that repel water.

Question 17

Which of the following is a reason why a dissecting microscope would be preferred over a compound light microscope?

Accepted Answer

To observe the surface details of larger, opaque specimens such as insects.

Question 18

Which of the following is a similarity between prokaryotic and animal cells?

Accepted Answer

Both contain ribosomes and a plasma membrane.

Question 19

Which of the following best describes the main purpose of sexual reproduction?

Accepted Answer

To increase genetic diversity in offspring.

Question 20

Why is it important to look at the side of the microscope when switching from a lower-power to a higher-power objective lens?

Accepted Answer

To avoid crashing the objective lens into the slide and damaging the specimen.

Microscopes and Cells: Step-by-Step Study Guidance for General Biology

Study Guide - Practice Questions