Question 1

Which type of microscope would be most appropriate to visualize the surface structure of a virus particle?

Accepted Answer

Scanning electron microscope

Question 2

Which of the following best describes the main difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, prokaryotic cells do not.

Question 3

In bacteria, DNA is typically found in which region?

Accepted Answer

Nucleoid

Question 4

Which organelle is responsible for packaging and modifying proteins for secretion in eukaryotic cells?

Accepted Answer

Golgi apparatus

Question 5

Which of the following is NOT a feature shared by all cells?

Accepted Answer

Contain a nucleus

Question 6

A cell is observed to have no nucleus, a cell wall, and is about 2 μm in size. What type of cell is this most likely to be?

Accepted Answer

Bacterium

Question 7

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

Accepted Answer

Central vacuole

Question 8

Which of the following best describes the function of ribosomes?

Accepted Answer

Build proteins

Question 9

Which two organelles are primarily responsible for energy production in eukaryotic cells?

Accepted Answer

Mitochondria and chloroplasts

Question 10

Which of the following is a function of the cytoskeleton?

Accepted Answer

Providing cell shape and structure

Question 11

Which of the following statements about the fluid mosaic model of biological membranes is correct?

Accepted Answer

Membranes consist of a phospholipid bilayer with embedded proteins that move laterally.

Question 12

Which molecule most easily diffuses across a biological membrane without the help of a protein?

Accepted Answer

O$$_2$$

Question 13

Which process is responsible for the movement of water across a semi-permeable membrane from a region of low solute concentration to a region of high solute concentration?

Accepted Answer

Osmosis

Question 14

A sodium-potassium pump transports:

Accepted Answer

3 sodium ions out and 2 potassium ions in using ATP

Question 15

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

Accepted Answer

Synthesizing proteins

Question 16

Which of the following best describes secondary active transport?

Accepted Answer

It uses the concentration gradient established by primary active transport.

Question 17

Which of the following is a true statement about facilitated diffusion?

Accepted Answer

It requires a protein transporter.

Question 18

Which of the following is a real-world example of phagocytosis?

Accepted Answer

A white blood cell engulfing a bacterium

Question 19

According to the endosymbiotic theory, which organelles are believed to have originated from free-living prokaryotes?

Accepted Answer

Mitochondria and chloroplasts

Question 20

Which of the following best describes the direction of water movement when a cell is placed in a hypertonic solution?

Accepted Answer

Water moves out of the cell

The Cell: The Fundamental Unit of Life – General Biology Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard