Question 1

Which of the following statements best describes the Central Dogma of molecular biology?

Accepted Answer

It states that genetic information flows from DNA to RNA to protein through transcription and translation.

Question 2

A typical human cell is approximately how large in diameter?

Accepted Answer

$$1-10 \ \mu m$$

Question 3

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

Accepted Answer

They contain a nucleus.

Question 4

Which experimental method is most appropriate for isolating and analyzing a specific population of cells from a tissue sample?

Accepted Answer

Cell isolation and cell fractionation

Question 5

Which of the following best explains why model organisms are used in cell biology research?

Accepted Answer

Their fundamental processes have been conserved through evolution, making them useful for studying basic biological mechanisms.

Question 6

Which organelle is present in eukaryotic cells but absent in prokaryotic cells?

Accepted Answer

Nucleus

Question 7

A scientist observes a cell under a microscope and notes the presence of a cell wall, chloroplasts, and a large central vacuole. What type of cell is this most likely to be?

Accepted Answer

Plant cell

Question 8

Which statement correctly compares the genome size of E. coli and human cells?

Accepted Answer

Human cells have approximately $$30,000$$ genes, while E. coli has about $$4,000$$ genes.

Question 9

Which of the following is a correct definition of a cell?

Accepted Answer

A cell is the basic unit of structure and function in organisms.

Question 10

Which of the following statements about the unity and diversity of cells is TRUE?

Accepted Answer

All cells share a similar basic chemistry and are enclosed in a plasma membrane.

Question 11

Which model organism is especially useful for studying early vertebrate development and gene function because its embryos are transparent?

Accepted Answer

Zebrafish

Question 12

Which of the following statements about prokaryotic cells is correct?

Accepted Answer

Prokaryotic cells lack a nucleus and membrane-bound organelles.

Question 13

Which of the following is a major difference between plant and animal cells?

Accepted Answer

Plant cells have chloroplasts and a cell wall, while animal cells do not.

Question 14

Which of the following best describes the function of the plasma membrane?

Accepted Answer

It encloses the cell and regulates the movement of substances in and out.

Question 15

Which model organism is commonly used to study genetics and development due to its short life cycle and easily observable mutations?

Accepted Answer

Drosophila melanogaster

Question 16

Which of the following statements about cell theory is FALSE?

Accepted Answer

Cells can arise spontaneously from non-living matter.

Question 17

A researcher wants to study the structure of mitochondria in detail. Which type of microscope should they use?

Accepted Answer

Electron microscope

Question 18

Which of the following is a correct statement about E. coli?

Accepted Answer

E. coli is a representative of prokaryotic cells.

Question 19

Which plant model organism is widely used in research due to its short life cycle and the availability of many mutants?

Accepted Answer

Arabidopsis thaliana

Question 20

Which of the following is a multi-step process that involves both transcription and translation?

Accepted Answer

Gene expression

Fundamentals of Cell Biology: Unity, Diversity, and Experimental Approaches

Guida di studio - Domande di pratica

Study guide - Flashcard