Biology Flashcards
7 cards from real CLEP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Biology flashcards as text
Which of the following best describes natural selection?
Answer: Differential reproductive success based on heritable traits
Natural selection favors heritable traits that increase survival and reproduction.
Where does the Krebs (citric acid) cycle occur in eukaryotic cells?
Answer: Mitochondrial matrix
The Krebs cycle takes place in the mitochondrial matrix.
Which kingdom contains prokaryotic organisms that often live in extreme environments?
Answer: Archaea
Archaea are prokaryotes frequently found in extreme habitats like hot springs.
A population in Hardy-Weinberg equilibrium is NOT experiencing which of the following?
Answer: Gene flow
Hardy-Weinberg equilibrium requires no gene flow, mutation, selection, or genetic drift.
Which structure in plant cells is the primary site of photosynthesis?
Answer: Chloroplast
Chloroplasts contain chlorophyll and carry out photosynthesis.
The genetic code is described as 'degenerate' because:
Answer: Multiple codons can code for the same amino acid
Degeneracy means several codons may specify the same amino acid.
Which type of symbiosis benefits one organism while harming the other?
Answer: Parasitism
In parasitism one organism benefits at the host's expense.