DNA Structure & Replication, Protein Synthesis, and Meiosis

In humans, where does DNA replication take place?

• cytoplasm

• nucleus

• ribosome

• vacuole

A sequence of nucleotides found in the DNA of a chromosome codes for a specific protein or trait. This section of DNA is known as:

• allele

• codon

• gene

• phenotype

Tags

NGSS.HS-LS3-1

RNA from a chipmunk is compared to RNA from a worm. 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

A scientist is doing an experiment to identify different molecules. Some components of these molecules are listed in the table to the right. Which of the four molecules is the DNA, based on the table to the right?

• molecule 1

• molecule 2

• molecule 3

• molecule 4

The diagram shown to the right represents a portion of a nucleic acid molecule. The part indicated by the arrow could be:

• adenine

• uracil

• deoxyribose

• phosphate

Tags

NGSS.HS-LS1-1

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

Which of the following nucleic acids contains thymine?

• DNA only

• messenger RNA only

• transfer RNA only

• all of the above

Base your answer to this question on the diagram shown to the right AND on your knowledge of biology. Structures 3 and 4 are held together by ....

• weak peptide bonds

• strong hydrogen bonds

• weak hydrogen bonds

• strong peptide bonds

Tags

NGSS.HS-LS1-1

DNA is a polymer consisting of monomers known as

• peptides

• nucleotides

• amino acids

• phosphates

In nucleotides, the letters A, G, C, and T represent

• phosphate groups

• deoxyribose sugars

• nitrogen bases

• ribose sugars