What does a culture medium provide to a living cell?

A. a slab of agar

B. oxygen-rich air

C. a constant temperature

D. food molecules called nutrients

I am a particle in the nucleus of an atom, and I have no electric charge. What am I?

Which of the following came about because of shifts and changes in word meanings?

Which major type of rock is most likely to experience brittle deformation?

Where does carbon monoxide pollution come from?

What are traces or remains of organisms that lived in the past? A. Adaptions B. Mutations C. Traits D. Fossils

A cell has the following features; a nucleus, mitochondria, ribosomes, a cell wall made of chiton and a cell membrane. What type of cell is described? A) animal B) bacteria C) fungi D) plant

The energy for the water cycle comes from the Sun. a. True b. False

Which tissue type is formed by many cells joining together, each contributing a nucleus? Select one: A. smooth muscle B. cardiac muscle C. dense regular D. skeletal muscle

What are you looking for in your observations when you are looking for evidence of a reaction?

What major structure brings oxygen and nutrients to the cells and carries away waste?