Get WGU Introduction-to-Biology Dumps Questions Study Exam Guide May 24, 2026
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NEW QUESTION # 14
Caribou dig through snow to find food. Afterward, arctic foxes use the fresh holes to search for their own food. What interaction occurs?
- A. Predation
- B. Parasitism
- C. Competition
- D. Commensalism
Answer: D
NEW QUESTION # 15
What is the process in which microbes convert glucose,in the absence of oxygen, intotwo ethanolmolecules andtwo carbon dioxidemolecules?
- A. Aerobic oxidation
- B. Carbon fixation
- C. Fermentation
- D. Phosphorylation
Answer: C
NEW QUESTION # 16
Coral reefs include many living (biotic) species interacting withabioticfactors like oxygen, water, soil, CO#, and light. Which part of the biosphere do coral reefs represent?
- A. Organism
- B. Community
- C. Ecosystem
- D. Population
Answer: C
NEW QUESTION # 17
Which statement correctly describes the flow of information duringgene expression?
- A. RNA is formed from DNA, then protein is formed from RNA
- B. RNA is formed from protein, then DNA is formed from RNA
- C. DNA is formed from protein, then RNA is formed from DNA
- D. DNA is formed from RNA, then protein is formed from DNA
Answer: A
NEW QUESTION # 18
Which molecule is aninputto thelight-dependent reactionsof photosynthesis?
- A. Carbon dioxide
- B. Sugar
- C. Oxygen
- D. Water
Answer: D
NEW QUESTION # 19
Refer to the diagram "Arctic Marine System Components."
Which components in the figure areabiotic?
- A. Fish and zooplankton
- B. Sunlight, organic deposits, and phytoplankton
- C. Sea ice and CO#
- D. Organic deposits, lobster, and polar bear
Answer: C
NEW QUESTION # 20
Transcription of RNA from DNA occurs in whicheukaryotic organelle?
- A. Golgi apparatus
- B. Nucleus
- C. Chloroplast
- D. Endoplasmic reticulum
Answer: B
NEW QUESTION # 21
How doesgene flowtypically affect therecipientpopulation?
- A. Exacerbates genetic drift
- B. Exacerbates natural selection
- C. Increases genetic variability
- D. Increases random mating
Answer: C
NEW QUESTION # 22
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. Red : Pink : White
- B. White : Red : Pink
- C. White : Pink : Red
- D. Pink : Red : White
Answer: D
NEW QUESTION # 23
Which statement correctly describes how anionic bondforms?
- A. Two ions share several pairs of electrons
- B. Two atomic nuclei fuse to form a single molecule
- C. An electron is transferred from one atom to another
- D. Two atoms are attracted to a nearby hydrogen atom that binds them together
Answer: C
NEW QUESTION # 24 
Using theTetrapod Cladogram (Node E)and standard vertebrate traits, whichtwo character statesare shared byboth Tiger and Gorilla?(Choose 2 answers)
- A. Jaw
- B. Loss of tail
- C. Fur
- D. Three middle ear bones
Answer: C,D
NEW QUESTION # 25
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. Feather color is influenced byboth genes and environment
- B. Feather color follows codominance
- C. Genes have no influence on feather color
- D. Genes in transplant parents determine feather color
Answer: A
NEW QUESTION # 26
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. 50%
- D. 25%
Answer: C
NEW QUESTION # 27
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. Competition
- D. Predator-prey
Answer: D
NEW QUESTION # 28
Which genotype indicates an individual withno recessive alleles?
- A. AABB
- B. aaBB
- C. AAbb
- D. aabb
Answer: A
NEW QUESTION # 29
What is the name of the structure thatjoins two sister chromatidstogether?
- A. Histone
- B. Chromosome
- C. Nucleus
- D. Centromere
Answer: D
NEW QUESTION # 30
What is a primary characteristic ofperipheral membrane proteins?
- A. They span the entire lipid bilayer, sometimes multiple times.
- B. They cannot be post-translationally modified.
- C. Weak intermolecular forces keep them attached to the lipid membrane.
- D. Detergents or nonpolar solvents are necessary to remove them from the membrane.
Answer: C
NEW QUESTION # 31
Which comparison ofDNA and RNAis correct?
- A. DNA is single-stranded; RNA is double-stranded.
- B. DNA is a monomer; RNA is a polymer.
- C. DNA uses uracil; RNA uses thymine.
- D. DNA stores hereditary information; RNA is used to make proteins.
Answer: D
NEW QUESTION # 32
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. NN and MN
- C. MM and NN
- D. MN and MN
Answer: C
NEW QUESTION # 33
Arctic foxes sometimes follow polar bears and scavenge leftovers after the bears finish eating. What interaction occurs?
- A. Predation
- B. Parasitism
- C. Herbivory
- D. Commensalism
Answer: D
NEW QUESTION # 34
What is thefunction of the centromereduring M phase?
- A. Keeping chromosomes condensed and packaged during cell division
- B. Holding sister chromatids together until they separate to move to opposite poles
- C. Pushing each sister chromatid to one of the poles
- D. Copying the chromosomes
Answer: B
NEW QUESTION # 35
A student notes thatclub mossesform an outgroup, whileferns, gymnosperms, and flowering plantsform an ingroup on a plant cladogram (algal ancestor at the base). Whichbranching pointis the student considering?
- A. Leaves with branching veins
- B. Vascular tissue
- C. Seeds
- D. Embryo protection
Answer: A
NEW QUESTION # 36
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