Unit 4 Task 1 Review

Extra big muscles have less muscle cells than typical muscles

• True

• False

Extra-big muscles have larger cells than typical ones.

• True

• False

Extra big muscles have more mass than typical muscles.

• True

• False

Muscles are made of

• Carbohydrates

• Fats

• Proteins

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Specific proteins in muscles that help them doe the job of moving are called

• actin

• acetone

• myosin

• mylanta

Muscle fibers contract when actin and myosin push against each other causing the fibers to separate.

• True

• False

Muscles move by shortening or _________ and lengthening or ________ the muscle fiber strands.

• relaxing; contraxting

• contracting; relaxing

• loosening; tightening

• thinning; bulking

Exercise and diet play an important role in building muscles. Diet has a bigger influence on musculature than exercise.

• True

• False

During exercise, tension on the muscle fibers leads to

• growth

• thinning

• microtears

• bulking

Tags

NGSS.HS-LS2-3

Protein is important because it repairs torn muscle fibers resulting in thicker and longer fibers.

• True

• False

Tags

NGSS.HS-LS1-1