Introduction-to-Biology Exam Training Practice Tests (WGU Introduction to Biology (KBC1, C190))]

Question 1

Which statement istrueabout the organisms on the vertebrate cladogram?

A. Amphibians are four-limbed species but lack a bony skeleton. B. Birds are the only species that produce eggs with shells. C. Sharks and rays have vertebrae but lack a bony skeleton. D. Only species with hair produce amniotic eggs.

Correct Answer: C

Question 2

Thailand's rainforest area has decreased since the 1960s due to logging and land clearing for agriculture.
Which activity would continue to have a negative effect on biodiversity?

A. Developing technologies that reduce chemical pollutants B. Increasing the use of sustainable technologies in Thailand C. Increasing the use of renewable energy sources D. Increasing the human population in Thailand

Correct Answer: D

Question 3

Glycolysis yields a net of two ATP molecules produced by phosphorylation. Which statement about the energy transformationin this process is true?

A. Energy is transformed into a long-term storage form. B. Energy is transformed into a form more useful for the cell. C. Energy is created. D. Energy is destroyed.

Correct Answer: B

Question 4

(Use the exhibit.) Students claimed: Label 1 = metaphase, 2 = interphase, 3 = anaphase, 4 = prophase. Based on the figure, which label is correctly tagged?

A. 4 B. 2 C. 1 D. 3

Correct Answer: D

Question 5

A species of fish can have dominantred fins (R)or recessivewhite fins (r), and dominantlong fins (L)or recessiveshort fins (l). In adihybrid cross, each parent isheterozygousfor both traits (RrLl × RrLl). How manydifferent gamete genotypescan each parent produce?

A. 4 B. 2 C. 1 D. 3

Correct Answer: A

Question 6

A researcher studies an organism with these traits:~0.3 #msize, cell membrane enclosing contents,free ribosomesin cytoplasm, andgenetic material loosely distributedin the cytoplasm. Which statement is true?

A. It is a eukaryote with both a cell membrane and cell wall. B. It is a prokaryote because it is microscopic. C. It is a eukaryote because it contains ribosomes. D. It is a prokaryote because it lacks a nucleus.

Correct Answer: D

Question 7

During whichphase of mitosisare the replicated chromosomessplitand the daughter chromosomesmoved to opposite poles?

A. Prophase B. Anaphase C. Telophase D. Metaphase

Correct Answer: B

Question 8

A cell has increased in size and is preparing to divide. Before division, DNA must be replicated.During which stageof the cell cycle is DNA replicated?

A. G# B. Synthesis C. G# D. Cytokinesis

Correct Answer: B

WGU Introduction to Biology (KBC1, C190) - Introduction-to-Biology Exam Practice Test