Question 1

Which of the following best describes the difference between a scientific theory and a scientific law?

Accepted Answer

A scientific theory explains why phenomena occur, while a law describes how phenomena behave under certain conditions.

Question 2

During mitosis, which phase is characterized by the alignment of chromosomes along the center of the cell?

Accepted Answer

Metaphase

Question 3

If a parent cell has 24 chromosomes, how many chromosomes will each daughter cell have after mitosis?

Accepted Answer

$24$

Question 4

Which of the following is an example of artificial selection?

Accepted Answer

Farmers breeding cows for higher milk production

Question 5

Which equation correctly represents the Hardy-Weinberg equilibrium for allele frequencies in a population?

Accepted Answer

$p^2 + 2pq + q^2 = 1$

Question 6

A student observes that a plant grows toward a light source. This is an example of which biological concept?

Accepted Answer

Phototropism

Question 7

Which of the following best describes the process of natural selection?

Accepted Answer

Traits that increase survival and reproduction become more common in a population over generations.

Question 8

Which of the following is NOT a requirement for Hardy-Weinberg equilibrium?

Accepted Answer

Small population size

Question 9

A pedigree chart shows a trait that appears in every generation. What is the most likely mode of inheritance?

Accepted Answer

Autosomal dominant

Question 10

Which of the following best explains why antibiotics are becoming less effective against certain bacteria?

Accepted Answer

Bacteria are evolving resistance through natural selection.

Question 11

Which process results in genetic variation during sexual reproduction?

Accepted Answer

Crossing over during meiosis

Question 12

A population of rabbits has the following genotype frequencies: $AA = 0.36$, $Aa = 0.48$, $aa = 0.16$. What are the allele frequencies for $A$ and $a$?

Accepted Answer

$A = 0.6$, a = 0.4$

Question 13

Which of the following is a correct statement about meiosis?

Accepted Answer

Meiosis reduces the chromosome number by half.

Question 14

Which of the following scenarios best illustrates the concept of homeostasis?

Accepted Answer

A lizard basking in the sun to raise its body temperature.

Question 15

Which of the following is the correct sequence of events in the scientific method?

Accepted Answer

Observation, hypothesis, experiment, analysis, conclusion

Question 16

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

Accepted Answer

It is used to compare results and determine the effect of the independent variable.

Question 17

A scientist wants to test the effect of fertilizer on plant growth. She sets up two groups: one with fertilizer and one without. What is the independent variable in this experiment?

Accepted Answer

Type of fertilizer

Question 18

Which of the following is a real-world example of gene inheritance following Mendel's laws?

Accepted Answer

A child inherits brown eyes from one parent and blue eyes from the other, showing a dominant-recessive relationship.

Question 19

Which of the following best explains why cladograms are useful in biology?

Accepted Answer

They show the evolutionary relationships among organisms.

General Biology Course Assignment and Grading Syllabus

Study Guide - Practice Questions

Study Guide - Flashcards