The pressure of a gas is proportional to its density and ________.
A) altitude
B) adiabatic rate
C) temperature
D) chemical composition
E) friction.
Answer: C) temperature
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Which bond is closest to the amino group of the molecule?
A) A B) B C) C D) D E) E
In most vertebrates, the sperm cell normally contributes which of the following to the new organism?
A. Many mitochondria B. Significant amounts of RNA C. A haploid complement of chromosomes D. Most of the cytoplasm of the zygote E. Two sex chromosomes
What evidence supports the hypothesis that the nuclear envelope of eukaryotes arose from infolding of the plasma membrane?
A. Eukaryotes and prokaryotes differ in control of gene expression. B. No modern bacteria have infolded plasma membranes. C. The nuclear membrane allows separation of transcription and translation. D. The nuclear membrane and endoplasmic reticulum (ER) of modern eukaryotes are continuous.
In what part of the nucleus does ribosomal RNA production occur?
A) within nuclear pores B) in the chromatin C) in the area of the nucleolus D) Ribosomal RNA production does not occur in the nucleus.