Biology Quiz

A DNA nucleotide could contain the following molecules:

• deoxyribose, cytosine, and a lipid.

• deoxyribose, thymine, and a phosphate group.

• ribose, uracil, and a polypeptide.

• ribose, adenine, and thymine.

In humans, where does DNA replication take place?

• Cytoplasm

• Nucleus

• Ribosome

• Vacuole

RNA from a honeybee is compared to RNA from a Rabbit. Both will contain the

• sugar deoxyribose and the base thymine.

• sugar deoxyribose and the base uracil.

• sugar ribose and the base thymine.

• sugar ribose and the base uracil.

Which of the following is not a component of a nucleotide?

• Nitrogenous base

• Phosphate group

• Deoxyribose sugar

• Peptide bond

The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?

• DNA opens up and RNA copies it.

• DNA opens up and completely unwinds to make two new molecules.

• DNA opens up and each strand is used as a template for making a new strand.

• RNA opens up the DNA and uses each strand as a template for a new strand.

How many amino acids are coded for by the strand of mRNA that has 9 nucleotides?

• 1

• 2

• 3

• 4

The sequence of __________ in a DNA molecule determines the protein that will be produced.

• lipids

• nucleotides

• proteins

• sugars

Which process involves the synthesis of mRNA from DNA?

• translation

• replication

• transcription

• mitosis

During protein synthesis, what does mRNA do?

• It delivers DNA’s instructions for making proteins to the ribosome.

• It constructs proteins out of amino acids.

• It strings together two complementary RNA strands.

• It delivers amino acids to assemble the polypeptide.

Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?

• The same number

• Twice as many

• 1/4th as many

• Half as many