The organs of the heart and the blood vessels form which of the followings?

A. a cell

B. a tissue

C. an organ

D. an organ system

What did robert hooke use to view cells? a. tree bark b. cork c. fuzz d. pea plant

Replacement is NOT the process of molecule-by-molecule substitution of another mineral of different composition for the original material. True False

A mutation in the human joan muscle allowed for what unique feature of the human brain?

Which statements accurately describe matter? Check all that apply. Only living things are made up of matter. Matter is made up of tiny particles called atoms. Atoms were discovered in the twenty-first century. Atoms cannot be divided.

How would the stimulation of muscarinic receptors in cardiac muscle affect the heart?

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.