Understanding Chromosomes and Muscles

What are chromosomes primarily made of?

• Lipids and carbohydrates

• DNA and proteins

• RNA and lipids

• Proteins and carbohydrates

How many pairs of chromosomes do humans typically have?

• 22 pairs

• 23 pairs

• 24 pairs

• 25 pairs

What is the primary function of chromosomes?

• To provide energy to cells

• To carry genetic information

• To transport nutrients

• To produce proteins

What role does dystrophin play in muscle function?

• It provides energy for muscle contraction

• It stabilizes and protects muscle fibers

• It transports oxygen to muscles

• It breaks down glucose for energy

What condition is associated with a deficiency or mutation in the dystrophin gene?

• Osteoporosis

• Duchenne Muscular Dystrophy (DMD)

• Arthritis

• Scoliosis

How do muscles create movement?

• By expanding and contracting

• By contracting and relaxing

• By rotating and twisting

• By stretching and compressing

What connects muscles to bones?

• Ligaments

• Cartilage

• Tendons

• Nerves

What happens when the brain sends a signal to muscles?

• Muscles expand

• Muscle fibers slide over each other

• Muscles become rigid

• Muscles dissolve

Where are chromosomes found in a cell?

• Cytoplasm

• Nucleus

• Cell membrane

• Mitochondria

Which of the following is NOT a component of chromosomes?

• DNA

• Proteins

• Lipids

• Genes