An athlete lives at sea level. They will have to compete at 2,000 m above sea level. At that elevation, the athlete has a harder time sustaining activity and isn’t able to achieve the same level of performance they could at sea level. What is the primary reason this is the case?

A parasitic mistletoe plant grows on a tree and inserts its haustoria into the tree’s xylem. What would the mistletoe plant be obtaining from the tree? Choose both correct answers.

Which two of the following occur while a neuron is generating resting potential? Choose both correct answers.

How is the majority of O2 transported in blood?

The way a signal is relayed along a single neuron is by [a]. A signal is transmitted from one neuron to the next by [b].

Identify which animal tissue type is responsible for each of the following functions.

A medical condition results in blood glucose levels being too high due to an inability to maintain homeostasis. Which of the following problems could result in this problem? Choose both correct answers.

Refer again to the previous question. What organ is responsible for removing the waste carbon from your body?

During normal osmoregulation in the kidney, which of the following should occur?

What drives the movement of water from the roots to the leaves of a tall tree?