Biology Quiz

Principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine.

• cell theory

• bilateral symmetry

• base pairing

• nucleotide

Subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base.

• base pairing

• DNA

• nucleotide

• nucleic acid

Enzyme that links together the growing chain of RNA nucleotides during transcription using a DNA strand as a template.

• ATP synthase

• helicase

• lactase

• RNA polymerase

Repetitive DNA at the end of a eukaryotic chromosome

• RNA polymerase

• nucleotide

• taxon

• telomere

Process of copying DNA prior to cell division

• duplication

• replication

• transcription

• segregation

Small sections of DNA that are formed during discontinuous synthesis of the lagging strand during DNA replication

• base pairs

• okazaki fragments

• nucleotides

• telomeres

Threadlike structure within the nucleus that contains genetic information that is passed on from one generation to the next

• chromosome

• nucleotide

• telomere

• chromatin

Substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones.

• telomere

• nucleotide

• chromosome

• chromatin

A term used to describe the physical structure of DNA composed of two linked strands that wind around each other to resemble a twisted ladder.

• nucleotide

• base pairs

• okazaki fragments

• double helix

An enzyme that catalyzes the separation of double-stranded nucleic acids into single strands in an ATP-dependent reaction.

• RNA polymerase

• ligase

• helicase

• ATP synthase