What is the movement of substances into and out of a cell without the use of energy called?

A) diffusion

B) locomotion

C) active transport

D) glycolysis

From the producer level to which level dose energy flow directly

A 210 gram piece of metal has a volume of 81 cm3. What is the density of this metal?

The cell membrane is also called

Which would most likely increase the carrying capacity for humans in a certain region? A. A higher fertility rate B. Less access to medicine C. A new source of fresh water D. A higher birthrate

Solve for Y in the following matrix equation. -2 - 3 ( -10 - 5 -7 - 11) = ( 24 - 7 19 5 )

Which sentences describe star clusters?

Which of the following is an advantage of nuclear energy over fossil fuels? A. Eliminates the need for mining. B. Uses a renewable energy source. C. Releases less CO2 waste products. D. Releases more CO2 waste products.

A cell with 46 chromosomes inside itsnucleus goes through one round of mitosis and cytokinesis. How manychromosomes are inside each of the two resulting nuclei?

The theory that explains how the earths surface is made up of moving rocky plates is called: A. Supercontinent B. Plate tectonics C. Sea floor spreading D. Continental drift

10. Which of the following is an emerging dis- ease that was unknown 50 years ago? a. malaria b. dengue fever C. Lyme disease d. schistosomiasis