Matter and environment Chap 3, Lesson 1

What causes the plankton blooms and hypoxia in the Gulf of Mexico?

• nutrient-rich runoff

• overfishing

• salinity content

• depth of water

basic unit of matter

• nucleus

• protons

• eletrons

• atom

Which of the following is positively charged and is located in the nucleus?

• electron

• proton

• neutron

• none of the answers are correct

substance composed of atoms of two or more different elements

• covalent bonds

• ionic bonds

• molecule

• compound

Organic compounds are covalent bonded carbon atoms.

• This is a TRUE statement

• This is a FALSE statement

lack carbon-to-carbon bonds

• Inorganic compound

• Organic compound

• Hydrocarbon

consists of bonded carbon atoms consists of bonded carbon atoms

• Inorganic compound

• Hydrocarbon

• Ionic bond

• Organic compound

Mixtures can't be:

• solid

• gas

• liquid

• plasma

proteins

• can be enzymes; have many functions

• direct protein production

• provide energy and structure

• have many functions; not soluble in water

DNA and RNA are

• carbohydrates.

• nucleic acids.

• lipids.

• proteins.