Intro Bio 2 Exam 2 Quiz

The tiniest type of a blood vessel that has the wall made of a single cell layer and is where the exchange of gasses, nutrients and waste products occurs is 

• Vein

• Artery

• Capillary

• Venule

Dolphins are mammals that live in the ocean, but breathe air. Tuna is a fish that obtains oxygen from water through the gills. Does hemoglobin from tuna or a dolphin have higher affinity for oxygen?

• Dolphin

• Tuna

• They have equal affinity for oxygen

The circulatory system of Daphnia is

• Open without a pump

• Closed without a pump

• Open with a pump

• Closed with a pump

When healthy, a ______ maintains its core body temperature around set point range

• Endotherm

• Endotherm that is also a homeotherm

• Ectotherm that is also a homeotherm

• Homeotherm

Focus on mammals. Select the blood vessel with the lowest blood pressure in the systemic circuit

• Venule

• Vein

• Artery

• Capillary

The increase in the volume of guard cells increase is result of 

• Facilitated diffusion of water into the cellActive transport of ions (K+, Cl-) into the cell

• Active transport of ions (K+, Cl-) into the cell

• The energy provided from the ATP hydrolysis

• Kinetic energy of the movement of molecules

Select all that applies. Functional guard cells...

• Facilitate the exchange of carbon dioxide and oxygen

• Contribute to the loss of water

• Affect the heating of the leaves

• Are not engaged in the movement of the water in the plant

Select the part of the plant where one would find xylem tissue

• Root

• Stem

• Fruit

• Leaf

Pneumonia is a medical condition that results in alveoli filling up with pus or fluid. How does fluid accumulation in alveoli affect breathing?

• Increased moisture in the lungs leads to a higher rate of gas exchange

• Pneumonia does not affect breathing

• Increased moisture in the lungs leads to a lower rate of gas exchange

In a mammal, the air is exhaled because __________

• Diaphragm relaxes

• Diaphragm contracts

• Chest cavity volume decreases

• Chest cavity volume increases