Question 1

Which of the following best describes the purpose of a control group in an experiment?

Accepted Answer

To provide a baseline for comparison against the experimental group

Question 2

A hypothesis in the scientific method must be:

Accepted Answer

Well-defined, testable, and measurable

Question 3

During mitosis in plant cells, cytokinesis occurs by:

Accepted Answer

Forming a cell plate in the center of the cell

Question 4

Which stage of the cell cycle is characterized by DNA replication?

Accepted Answer

S phase

Question 5

If a cell starts meiosis with a diploid number of chromosomes ($$2n$$), what is the chromosome number after Meiosis I?

Accepted Answer

$$n$$

Question 6

Which of the following best describes the significance of crossing over during meiosis?

Accepted Answer

It increases genetic diversity among gametes

Question 7

In an experiment, the variable that is measured as the outcome is called:

Accepted Answer

Dependent variable

Question 8

Which of the following is a marker gene commonly used in bacterial transformation experiments?

Accepted Answer

Gene for antibiotic resistance

Question 9

A student presents data in a graph showing the effect of temperature on enzyme activity. Which axis should represent the dependent variable?

Accepted Answer

Y-axis

Question 10

Which of the following statements about somatic cells and gametes is correct?

Accepted Answer

Somatic cells are diploid, gametes are haploid

Question 11

What is the main role of meiosis in sexual reproduction?

Accepted Answer

To reduce the chromosome number by half

Question 12

Which of the following best describes the SMART rules in experimental design?

Accepted Answer

Specific, Measurable, Achievable, Relevant, Time-bound

Question 13

Which reagent is commonly used to make bacterial cells competent for transformation?

Accepted Answer

Calcium chloride ($$CaCl_2)$$

Question 14

A prediction in the scientific method is best described as:

Accepted Answer

A statement about what will happen if the hypothesis is correct

Question 15

Which of the following is NOT a component of a well-designed experiment?

Accepted Answer

Ignoring the control group

Question 16

How does BPA (Bisphenol A) affect cell division?

Accepted Answer

It disrupts the cell cycle and can cause abnormal cell division

Question 17

Which of the following best describes autosomes?

Accepted Answer

Non-sex chromosomes

Question 18

In bacterial transformation, what is the purpose of using plasmids?

Accepted Answer

To provide a vehicle for introducing new genetic material into bacteria

Question 19

Which stage of mitosis is characterized by the alignment of chromosomes at the cell's equator?

Accepted Answer

Metaphase

Question 20

A scientist wants to test the effect of a new drug on cell division. Which of the following would be the best dependent variable to measure?

Accepted Answer

The number of cells undergoing mitosis

Lab Final Study Guide: Cell Cycle, Reproduction, and Bacterial Transformation

Study Guide - Practice Questions