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WGU Introduction-to-Biology Exam Syllabus Topics:

WGU Introduction to Biology (KBC1, C190) Sample Questions:

1. How isDNA organized during prophase, and why?

A) Uncondensed because it needs to be lined up at the center
B) Organized into paired chromatids to keep it lined up at the center
C) Condensed, which makes it easier to move
D) Uncondensed because it needs to move toward the poles

2. A gene sequenceCGCATACGGTACencodes a peptide (Arg-Ile-Arg-Tyr). A mutation inserts aGafter the secondC. How will this most likely affect the phenotype?

A) No effect; protein will be identical
B) Affects phenotype; only the first amino acid changes
C) No effect; only the second amino acid changes
D) Affects phenotype; all amino acids after the first will change (frameshift)

3. The humanMN blood groupis determined by two codominant alleles (MandN). In one family,alloffspring are MN. What are themost probable genotypesof the parents?

A) MN and MN
B) MM and MN
C) NN and MN
D) MM and NN

4. The leopard seal is part of an Antarctic food web. It feeds oncod, which feed on small aquatic plants. Based on the energy transfer in the exhibit, how much energy does the leopard seal receive by feeding on cod?

A) 5,400 KJ
B) 60 KJ
C) 540 KJ
D) 600 KJ

5. 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) Predator-prey
B) Mutualism
C) Competition
D) Symbiosis

Solutions: