What mineral is in a salt shaker?

Brass gets discoloured in air because of the presence of which of the following gases in air? A. Oxygen B. Hydrogen sulphide C. Carbon dioxide D. Nitrogen

What kind of animal tissue functions in transmitting messages rapidly through the body?

Predict what would happen to the plants if the fungi died off

A cell has cytoplasm, a cell wall, naked DNA and ribosomes. Based on this information, what type of cell could this be? A. A cell from a pine tree B. A grasshopper cell C. A human red blood cell D. A bacterium

What does diffusion mean?

A change in the natural sequence of bases in DNA structure is called a A) mutation. B) reconstruction. C) revolution. D) translation.

A rabbit is an example of a - - - while a hyena is an example of a - - - producer parasite herbivore carnivore host carnivore

Which organelle is not found in plant cells? A) vacuoles B) mitochondria C) chloroplast D) centrioles

Gina is driving her car down the street. She has a teddy bear sitting on the back seat. A dog runs in front of Gina's car, so she quickly applies the brakes.

The term enzymes, was first used in 1878. The term is derived from a Greek word that means in yeast because the yeast cells were first to reveal enzyme activity in living organisms.