Free WGU (Introduction-to-Biology) Certification Sample Questions with Online Practice Test
Introduction-to-Biology Certification Study Guide Pass Introduction-to-Biology Fast
NEW QUESTION # 41
Which comparison ofDNA and RNAis correct?
- A. DNA uses uracil; RNA uses thymine.
- B. DNA stores hereditary information; RNA is used to make proteins.
- C. DNA is single-stranded; RNA is double-stranded.
- D. DNA is a monomer; RNA is a polymer.
Answer: B
NEW QUESTION # 42
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 prokaryote because it lacks a nucleus.
- B. It is a prokaryote because it is microscopic.
- C. It is a eukaryote with both a cell membrane and cell wall.
- D. It is a eukaryote because it contains ribosomes.
Answer: A
NEW QUESTION # 43
Which statement correctly describes the flow of information duringgene expression?
- A. RNA is formed from protein, then DNA is formed from RNA
- B. DNA is formed from protein, then RNA is formed from DNA
- C. RNA is formed from DNA, then protein is formed from RNA
- D. DNA is formed from RNA, then protein is formed from DNA
Answer: C
NEW QUESTION # 44
Homologous chromosome pairsare undergoing crossing over but havenot yet lined upat the cell's midline.
Which stage is this?
- A. Anaphase I
- B. Anaphase II
- C. Prophase I
- D. Prophase II
Answer: C
NEW QUESTION # 45
Agroup of lionsthat preys on deer constitutes which ecological level?
- A. Ecosystem
- B. Community
- C. Population
- D. Biome
Answer: C
NEW QUESTION # 46
Mangroves shelter many species. Pelicans and herons both feed on small invertebrates and fish. What type of interaction do pelicans and herons share?
- A. Mutualism
- B. Predation
- C. Competition
- D. Herbivory
Answer: C
NEW QUESTION # 47
What is the correctorderof the major events inDNA replication?
- A. Joining the two DNA strands # synthesis of a complementary strand # unwinding the DNA
- B. Synthesis of a complementary strand # unwinding the DNA # joining the two DNA strands
- C. Unwinding the DNA # synthesis of a complementary strand # joining the two DNA strands
- D. Unwinding the DNA # joining the two DNA strands # synthesis of a complementary strand
Answer: C
NEW QUESTION # 48
A farmer breeds sheep fordisease resistanceandfine wool. After decades, the flock consistently shows both traits. Which evolutionary mechanism changed the flock's gene pool?
- A. Gene flow
- B. Artificial selection
- C. Sexual selection
- D. Natural selection
Answer: B
NEW QUESTION # 49
Which statement istrueofmeiosis?
- A. A cell undergoestwo divisionsduring meiosis.
- B. Meiosis results in two daughter cells.
- C. The daughter cells produced are somatic cells.
- D. The daughter cells produced are diploid.
Answer: A
NEW QUESTION # 50
In a species wherewhite fur (W)is dominant toblack fur (w), you cross twoheterozygousindividuals (Ww × Ww). What is the probability that an offspring will havegenotype Ww?
- A. 100%
- B. 75%
- C. 25%
- D. 50%
Answer: D
NEW QUESTION # 51
Rabbit populations rise and fall over 8-10 years; wolf populations in the same area follow with a ~2-year lag.
What is the relationship between wolves and rabbits?
- A. Mutualism
- B. Symbiosis
- C. Predator-prey
- D. Competition
Answer: C
NEW QUESTION # 52
A primary consumer (e.g., an insect) derives energy from which level of the food chain?
- A. Carnivore
- B. Producers
- C. Primary consumer
- D. Secondary consumer
Answer: B
NEW QUESTION # 53
The humanMN blood groupis determined by two codominant alleles (MandN). In one family,alloffspring are MN. What are themost probable genotypesof the parents?
- A. MM and MN
- B. MN and MN
- C. MM and NN
- D. NN and MN
Answer: C
NEW QUESTION # 54
A horticulturalist crosses twopinkcarnations. Flower color showsincomplete dominance: red × white # pink heterozygotes. The observedphenotype ratio is 2:1:1. Which color ordering corresponds to this ratio?
- A. Pink : Red : White
- B. White : Pink : Red
- C. White : Red : Pink
- D. Red : Pink : White
Answer: A
NEW QUESTION # 55
Cells use ATP to power muscle contraction. During contraction, ATP is converted to ADP and inorganic phosphate. What is happening to energy in this conversion?
- A. Energy is being stored.
- B. Energy is being destroyed.
- C. Energy is being released.
- D. Energy is being created.
Answer: C
NEW QUESTION # 56
Which genotype indicates an individual withno recessive alleles?
- A. aaBB
- B. AABB
- C. AAbb
- D. aabb
Answer: B
NEW QUESTION # 57
The nucleus contains chromosomes that are replicated and passed to the next generation. One of the two macromolecules in chromosomes is themolecule of heredity. Which molecule is the hereditary material?
- A. RNA
- B. Proteins
- C. DNA
- D. Carbohydrates
Answer: C
NEW QUESTION # 58
Which type of cell division has onlyone division per cycle?
- A. Mitosis
- B. Meiosis
- C. Prophase
- D. Interphase
Answer: A
NEW QUESTION # 59
Which list containsonly bioticfactors?
- A. Frog, butterfly, fern, tree
- B. Wind, sunlight, fern, frog
- C. Soil, sunlight, frog, tree
- D. Soil, frog, butterfly, fern
Answer: A
NEW QUESTION # 60
Which statement istrueof aprokaryoticcell?
- A. It is found in plants, has chloroplasts, and its DNA is in a nucleus.
- B. It contains a nucleus but lacks a cell wall.
- C. It is one of the smallest living cells, has a cell wall, and contains a nucleoid region.
- D. It contains a nucleus and membrane-bound organelles.
Answer: C
NEW QUESTION # 61
In a cross-fostering experiment, half of thepurple-featheredbarn swallow eggs were raised bygray-feathered swallows; upon maturity, fostered young weregray, while those raised by their purple parents werepurple.
What best explains these results?
- A. Genes in transplant parents determine feather color
- B. Feather color is influenced byboth genes and environment
- C. Feather color follows codominance
- D. Genes have no influence on feather color
Answer: B
NEW QUESTION # 62
What plays multiple roles in the nitrogen cycle, including converting nitrogen gas into a plant-usable form?
- A. Bacteria
- B. Fungi
- C. Animals
- D. Lightning
Answer: A
NEW QUESTION # 63
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. Cytokinesis
- C. Synthesis
- D. G#
Answer: C
NEW QUESTION # 64 
Refer to theSpecies A-D Cladogram (Node X). What doesNode Xrepresent?
- A. The point at which species C and D diverged
- B. The point at which species C and D diverged from species B
- C. The common ancestor of species A, B, C, and D
- D. The point where species B, C, and D diverged from species A
Answer: A
NEW QUESTION # 65
Which stage of cellular respiration produces themost ATPper molecule of glucose broken down?
- A. Electron transport chain
- B. Calvin cycle
- C. Krebs cycle
- D. Glycolysis
Answer: A
NEW QUESTION # 66
......
Get Perfect Results with Premium Introduction-to-Biology Dumps Updated 80 Questions: https://www.bootcamppdf.com/Introduction-to-Biology_exam-dumps.html
Introduction-to-Biology Dumps PDF 2026 Program Your Preparation EXAM SUCCESS: https://drive.google.com/open?id=1BeUxvzfktgL-a3yI6pmRegolEiK30ehO