Unit Test Answers

Which level of organization falls directly after the tissue level when listed in order from least to most complex?

The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on preparing the body for pregnancy?

A commercial on television advertises a new medicine that claims to boost immunity. You want to verify that the claim is scientifically based. Which source is least likely to provide you with accurate information about this new medicine?

Which organ systems work together to help the body shiver in order to maintain homeostasis?

A patient is in need of hydration. Which type of solution are the patient’s cells most likely in?

Which homeostatic process is characterized by the diffusion of only water molecules?

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?

Staphylococcus aureus, or staph, is a bacteria that is commonly found in the nose and on the skin of humans. While it is typically not harmful to humans, it is sometimes able to enter the body through an injury or broken skin, and get into the bloodstream. When this happens, it can cause a serious infection called sepsis. Sepsis can cause an individual to go into shock and bodily organs to stop functioning. Symptoms of sepsis include inflammation, fever or hypothermia, increased heart rate, and rapid breathing.Which immune system component initially results in the inflammation and responds quickly when Staphylococcus aureus enters the bloodstream?

The body obtains sugar from food. Which system most directly affects blood sugar levels?

The brain and spinal cord work together so the body can receive signals and react to the environment. What is the spinal cord?

The concentration of sodium on the inside of the cell is 20 mM. The outside of the cell has a sodium concentration of 115 mM. Which mechanism of ion uptake would best move sodium from the inside of the cell to the outside?

Maintaining a healthy lifestyle through diet and exercise is important,

Which of the following describes a positive feedback loop?

Which actions are involved in the immune response?

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?