A cell must expend energy to transport substance using

A. A cell membrane pump b. Facilitated diffusion c. Ion channels d. Osmosis

When performing a biceps curl, tension in the biceps brachii muscle increases. Which of the following structures detects and responds to the tension by reflexively reducing muscle activation? a. Golgi tendon organ. b. Muscle spindle. c.

Explain why the number of atoms of reactants must equal the number of atoms of products formed

Put all of the above household items in order from lowest to highest pH. A) Lemon juice, water, Tums B) Water, Tums, Lemon Juice C) Water, Lemon Juice, Tums D) Tums, water, lemon juice

How can biological weathering and chemical weathering

Cancer cells have distinctive properties that set them apart and contribute to malignancy. Which characteristic is NOT one of those exhibited by cancer cells?

How was the present day theory of evolution developed?

Darwin often used the phrase "_[blank]_" to suggest that species must have descended from preexisting species and that changes in the species took place over long periods of time on the origin of species descent with modification descent with

Which phrases describe faults? Check all that apply. are cracks in Earth's crust cause gaps in the geologic record cause rocks to break and move are younger than surrounding rocks are igneous rocks that form beneath Earth's surface

The fibers that connect the two halves of the brain are called the

How does the cell wall of a plant cell compare to the plasma membrane of an animal cell? a. the cell wall provides structure and support; the plasma membrane controls the substances that enter and leave the cell. b.