BIO120 CHP2

elements are the _____ form of matter

SIMPLEST

an object that takes up space and has mass

MATTER

primary basic substances of living and non-living matter

ELEMENTS

6 basic elements for life

CARBON, HYDROGEN, NITROGEN, OXYGEN, PHOSPHORUS, SULFUR

composed mostly of carbon, hydrogen, and oxygen; soluble in water

CARBOHYDRATES

composes of carbon, hydrogen, and oxygen but has lower ratio of oxygen than do carbohydrates; relatively insoluble in water

LIPIDS

always contain carbon, hydrogen, oxygen, and nitrogen

PROTEINS

building blocks of nucleic acids

NUCLEOTIDES

subatomic particles located around the nucleus of an atom are

ELECTRONS

a neutral atom contains

THE SAME NUMBER OF ELECTRONS AND PROTONS

molecule

COMBINATION OF ATOMS HELP TOGETHER BY CHEMICAL BOND

large carbohydrates are formed from smaller units called ______

MONOSACCHARIDES

type of carbohydrate

SUCROSE

contain long chains of monosaccharides

POLYSACCHARIDES

the molecular formula H2O means

2 HYDROGENS 1 OXYGEM ATOM

sugar found in DNA

DEOXYRIBOSE

the building blocks of proteins

AMINO ACIDS

what organic groups does DNA belong to

NUCLEIC ACID

what organic group does a steroid belong to

LIPID

what nitrogen bases is found in RNA bur not DNA

uracil

what is the correct complementary strand to CATGTC

GTACAG

serves as the energy currency of the cell

ATP

_____ is a monosaccharide, whereas ______ is a polysaccharide

GLUCOSE, STARTCH