7th Grade Science Final Exam Review - Part 2

___________ reproduction has the advantage of increasing genetic variation.

• Sexual

• Asexual

• Fission

• Budding

Beaver muscle cells have 48 chromosomes.  How many chromosomes would be found in a beaver egg cell?

• 96
• 48
• 24
• 12 

The basic building blocks from which all living organisms are made are

• cells

• Chicken

• chromosomes

• Amoeba

Where do mutations occur?

• DNA and RNA
• DNA 
• RNA
• mRNA and tRNA

A mutation is defined as:

• A change in the cell's structure

• Anything that changes in an embryo

• Any change in the physical features of a human

• A change in the DNA sequence

A guinea pig cell has 64 chromosomes.  After mitosis, each daughter contains ___ chromosomes.

• 128
• 64
• 32
• 16

True or false, mutations create genetic diversity?

• True

• False

Which sequence of complementary DNA bases would pair with this partial strand
ATG TGA CAG?

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

Controls what goes in and out of the cell.

• cell membrane

• cell wall

• organelle

• cell

Mutations are SOMETIMES helpful to the organism.

• true

• false