GRADE 9

Which part of the circulatory system carries blood with oxygen away from the heart to all the cells in your body?

• veins

• arteries

• capillaries

• ventricles

What do all cells need in order to function?

• plasma

• oxygen

• carbon dioxide

• platelet

Which describes one way that the skeletal system works with the respiratory system?

• The skeletal system provides structure for the organs in the respiratory system.

• The skeletal system provides oxygen for the lungs.

• The skeletal system provides protection for the lungs.

• The skeletal system provides support for the organs in the respiratory system

1. Which part of the circulatory system carries blood with carbon dioxide back to the heart and lungs?

• veins

• arteries

• capillaries

• ventricles

Which describes one way that the skeletal system works with the circulatory system?

• The skeletal system provides support for all of the components in the circulatory system

• The skeletal system makes red blood cells that are transported through blood vessels.

• The skeletal system protects blood vessels all around the body.

• The skeletal system provides structure for all of the components in the circulatory system

Suppose a white-furred rabbit breeds with a black-furred rabbit and all of their offspring have a phenotype of gray fur. What does the gene for fur color in rabbits appear to be an example of?

• Mosaicism

• Codominance

• Incomplete dominance

• Complete dominance

In the ABO blood group system in humans, if a person of type-B blood has children with a person of type-AB blood, what blood types could their children have?

• Type-AB, type-A, and type-B

• Type-B and type-AB

• Type-AB, type-A, type-B, and type-O

• A. Type-A and type-B

A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?

• Genetic recombination

• Codominance

• Incomplete dominance

Suppose that in barley plants, the allele for tall stalks is dominant over short stalks and the allele for wide leaves is dominant over thin leaves. What would be the best way to determine the genotype of a barley plant with a tall stalk and wide leaves?

• Perform a testcross with a barley plant that has a tall stalk and thin leaves

• Perform a testcross with a known heterozygous barley plant

• Perform a testcross with a barley plant that has a short stalk and thin leaves

• Perform a testcross with a barley plant that has a tall stalk and wide leaves

If two genes experience independent assortment, which assumption is most likely true?

• They are located in close proximity on the same chromosome

• Crossing over between the genes does not occur.

• The genes are located on different chromosomes or are far apart on the same chromosome.

• The expression of one gene does not affect the expression of the other