Which of the following is a correct description of the shape of frozen water molecules?
A. Ladder.
B. Block.
C. Parallel.
D. Lattice.
The term pleiotropy is best defined as:
A. A condition in which multiple genes are missing.
B. A situation in which one gene remains unexpressed.
C. One gene influencing multiple, seemingly unrelated phenotypic traits.
D. Two genes affected by a single allele.
Which molecules are responsible for the base pairing action in DNA?
A. Phosphate groups.
B. Sugar molecules.
C. Nitrogenous bases.
D. Codons.
Glycolysis is the conversion of _______ to ______ in the process of cellular respiration.
A. Glucose, pyruvate.
B. Pyruvate, glucose.
C. NADH, pyruvate.
D. NADH, ATP.
The oxidation of the NADH molecules to produce oxygen and water in cellular respiration takes place in a series of steps defined as:
A. Cellular inspiration.
B. Krebs cycle.
C. Electron transport chain.
D. Cellular conversion.
For every glucose molecule utilized during cellular respiration, approximately how many ATP molecules can be produced?
A. 14 to 18.
B. 18 to 25.
C. 32 to 36.
D. 68 to 70
Cells with a high rate of protein synthesis generally have a large number of which of the following cellular structures?
A. Mitochondria.
B. Ribosomes.
C. Lysosomes.
D. Golgi apparatus
An organism that has a genotype of two dominant alleles for one gene is:
A. Heterozygous.
B. Homozygous.
C. Multiparous.
D. Nulliparous.
The method by which mRNA is created is begun by which of the following processes?
A. Replication.
B. Translation.
C. Splitting.
D. Transcription.
Which scientists are responsible for describing the structure of DNA?
A. Watson and Crick.
B. Watson and Holmes.
C. Holmes and Croiger.
D. Brown and Curie.
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