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C190 / C 190 Objective Assessment (Latest Update 2025 / 2026) Introduction to Biology | Questions and Answers | Grade A | 100% Correct - WGU
Question:
A cutting is taken from a mature hydrangea plant with blue flowers. The cutting is planted in acidic soil and produces red flowers.
What caused the flower color in this hydrangea cutting to change?
Answer:
An interaction between the genes and the soil
Question:
Which of the following carries the information that determines which amino acids are used to make a protein?
Answer:
Messenger RNA
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Question:
A recessive mutation in the DFN3 gene causes deafness. A mother with DFN3 deafness will have sons who all have deafness.
How did the sons inherit the gene for deafness?
Answer:
On the X chromosome from the mother
Question:
Place the steps of DNA replication in the order of occurrence.
Select your answers from the pull-down list.
Answer:
DNA molecule unwinds. 1
DNA molecule separates into two template strands. 2
Complementary nucleotides are added to each template strand. 3
Two DNA molecules, each with a template strand and a new strand, are formed. 4
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Question:
In which eukaryotic organelle does protein synthesis occur?
Answer:
Endoplasmic reticulum
Question:
A gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arg-tyr. A mutated version of this gene has an A in place of the second C and produces the amino acid sequence arg-ile-arg-tyr.
What is true regarding this mutation?
Answer:
The mutated gene results in the same amino acid sequence and will result in the same phenotype.
Question:
Biologists estimate that there are 1000 species of bacteria living in the average human stomach. Biologists are studying how these species interact with each other.
Which level of ecological organization is being studied?
Answer:
Community
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