Human Biology baseline

What is the smallest unit of life in the human body?

• organ

• cell

• body system

• tissue

Which gas do humans breathe in so our cells can make energy?

• oxygen

• carbon dioxide

• nitrogen

• water vapor

Which of the following factors would most directly affect blood flow through the circulatory system?

• blood pressure
• blood sugar
• respiratory rate
• outside temperature

What causes blood pressure? 

• cholesterol in the blood
• stress that exercise puts on heart muscle
• contraction of the ventricles in the heart
• removal of oxygen from the blood

Which of the following is not a type of antigen used in vaccines?

• inactivated pathogen toxins

• dead pathogens

• weakened pathogens

• Healthy pathogens

The Atria ____ while ventricles relax, then _____ contract while atria relax.

• contract, ventricles

• contract, atria

• relax, ventricles

• relax, atria

What is the correct order of organization

• tissues-cells-organs-organ systems-organism

• tissues-cells-organs-organ sytems-human

• organism-cells-tissues-organ systems-organism

• cell-tissue-organs-organ systems-organism

What hormone is release in response to an increase in blood glucose concentration?

During fight or flight response what hormone can be produced that will raise glucose concentration in the blood?

Which of the answers below is NOT a primary function of the skin?

• Provides chemical protection

• Vitamin A synthesis

• It is a waterproof layer

• Shields us from microorganisms