Grade 8 Lesson 1 Revision

A ____ is part of the DNA code on a chromosome.

• gene

• genotype

• phenotype

• gender

Which of the following is NOT part of a chromosome?

• proteins

• cell

• deoxyribouncliec acid

• DNA

A segment of DNA is a _____.

• trait

• gene

• cell

• model

Most genes contain instructions for making ___ .

• blood

• proteins

• cells

• energy

The process of copying a DNA molecule to make another DNA molecule is called_____________.

• RNA

• replication

• regulation

• nucleotide

A__________ is molecule made of a nitrogen base, a sugar, and a phosphate group.

• nucleus

• nucleotide

• DNA

• Nuculecide

These molecules are required for the structures and functions of the body and express traits.

• Variations

• Adaptations

• Mutations

• Proteins

An organism's genetic material

• Proteins

• DNA

• Chromosomes

• Traits

A segment of DNA in the chromosome that provides directions for a cell to assemble proteins that express traits.

• Gene

• Chromosome

• Protein

• Mutation

Which letter in the image represents a chromosome?

• A

• B

• C