Chapter 8 Test Review

What is the term for cells that have no nucleus and DNA floats freely?

• Prokaryotic cells

• Eukaryotic cells

• Animal cells

• Plant cells

Which type of cells have DNA inside the nucleus?

• Eukaryotic cells

• Prokaryotic cells

• Bacterial cells

• Archaeal cells

What is the process by which organisms better adapted to their environment survive and reproduce?

• Natural selection

• Genetic drift

• Mutation

• Artificial selection

Order the structure from largest to smallest: Cell, Nucleus, Chromosomes, DNA, Genes.

• Cell > Nucleus > Chromosomes > DNA > Genes

• Genes > DNA > Chromosomes > Nucleus > Cell

• Cell > Chromosomes > Nucleus > Genes > DNA

• DNA > Genes > Chromosomes > Nucleus > Cell

What is the main function of the circulatory system?

• The main function of the circulatory system is to transport blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body.

• The main function of the circulatory system is to digest food and absorb nutrients.

• The main function of the circulatory system is to control the body's movements and coordination.

• The main function of the circulatory system is to filter waste products from the blood and excrete them.

Which system helps the body move?

• The muscular system helps the body move.

• The digestive system helps the body move.

• The respiratory system helps the body move.

• The nervous system helps the body move.

What is the role of the digestive system?

• Breaking down food and absorbing nutrients

• Transporting oxygen to cells

• Protecting the body from infections

• Regulating body temperature

Which system takes in oxygen?

• Respiratory system

• Digestive system

• Nervous system

• Circulatory system

What does the immune system do when a pathogen enters the body?

• The immune system identifies and attacks the pathogen.

• The immune system ignores the pathogen.

• The immune system helps the pathogen to spread.

• The immune system weakens the body's defenses.

What is an example of a physical adaptation?

• Giraffe's long neck

• Bird's song

• Human's language

• Dog's barking