$$P(A \text{ and } B) = P(A) \times P(B)$$

$$\frac{6a^2$}{a^3$} = \frac{6 \times 2^2$}{2^3$} = \frac{24}{8} = 3$$

Question 1

Which of the following best describes the purpose of a chi-square test in the context of the Skittles Chi Square lab?

Accepted Answer

To compare observed and expected frequencies of Skittles colors to test for randomness.

Question 2

During the Enzyme Activity Lab, which variable is most likely manipulated to observe changes in enzyme function?

Accepted Answer

The temperature at which the reaction occurs.

Question 3

In the Surface Area to Volume Ratio Lab, why do smaller cells tend to be more efficient at exchanging materials with their environment?

Accepted Answer

They have a higher surface area to volume ratio, allowing for more efficient diffusion.

Question 4

Which equation is used to calculate the surface area to volume ratio of a cube-shaped cell?

Accepted Answer

$$\frac{6a^2$}{a^3$}$$

Question 5

In the Osmosis & Diffusion Lab, a dialysis bag filled with 10% sucrose solution is placed in pure water. What will happen to the bag over time?

Accepted Answer

Water will move into the bag, causing it to gain mass.

Question 6

Which phase of mitosis is characterized by the alignment of chromosomes along the cell's equatorial plane?

Accepted Answer

Metaphase

Question 7

During the Genetics Probability Lab, which formula is used to calculate the probability of two independent events both occurring?

Accepted Answer

$$P(A 	ext{ and } B) = P(A) 	imes P(B)$$

Question 8

In the Hardy-Weinberg Lab, which equation is used to calculate allele frequencies in a population?

Accepted Answer

$$p + q = 1$$

Question 9

Which of the following is NOT an assumption of the Hardy-Weinberg equilibrium?

Accepted Answer

Natural selection is present.

Question 10

In the Natural Selection Simulation, which factor would most likely increase the frequency of a beneficial allele in a population over time?

Accepted Answer

Individuals with the allele have higher reproductive success.

Question 11

Which lab activity would best help students visualize the three-dimensional structure of biological molecules?

Accepted Answer

Molecular Models Lab

Question 12

If a cell has a diameter of 2 mm, what is its approximate surface area to volume ratio?

Accepted Answer

$$\frac{6a^2$}{a^3$} = \frac{6 	imes 2^2$}{2^3$} = \frac{24}{8} = 3$$

Question 13

Which of the following best explains why enzymes are specific to their substrates?

Accepted Answer

The active site of an enzyme has a unique shape that fits only specific substrates.

Question 14

In the Karyotype Lab, what chromosomal abnormality is indicated by the presence of three copies of chromosome 21?

Accepted Answer

Down syndrome (Trisomy 21)

Question 15

Which of the following is a direct result of osmosis in plant cells placed in a hypotonic solution?

Accepted Answer

The cells become turgid as water enters.

Question 16

During the Cell Cycle & Mitosis unit, which checkpoint ensures that DNA is undamaged before the cell enters mitosis?

Accepted Answer

G2 checkpoint

Question 17

Which lab activity would most likely involve constructing a phylogenetic tree to show evolutionary relationships?

Accepted Answer

Cladistics Lab

Question 18

If a population is in Hardy-Weinberg equilibrium and the frequency of allele $$p is 0.7$$, what is the frequency of allele $$q$$?

Accepted Answer

$$q = 1 - p = 1 - 0.7 = 0.3$$

Question 19

Which of the following best describes the role of water in biochemical reactions observed in the Properties of Water Lab?

Accepted Answer

Water acts as a solvent, facilitating the movement and interaction of molecules.

General Biology Course Syllabus: Units, Chapters, and Lab Activities

Study Guide - Practice Questions