Quiz 3 Flashcards
(22 cards)
What is matter
Anything that takes up space and has weight
What is a compound?
The substance composed of two or more chemically bonded elements
What are the four most abundant elements in the human body?
Oxygen, carbon, hydrogen, nitrogen
What are the major parts of an atom?
Neutron (neutral)
Proton(+)
Electron(-)
Nucleus(contains protons and neutrons)
Why is an atom electrically neutral?
The electron charge equals the proton charge that leads to no charge which makes electrical neutral
What are isotopes?
Atoms that have the same atomic number it different atomic weight
What is atomic radiation?
The energy being emitted by unstable isotopes
Describe the relationship between molecules and compounds
A molecule is when two or more atoms may combine and compounds are substances composed of two or more chemically bonded elements
An ionic bond is formed when___________
Ions with opposite electrical charges attract
A covalent bond forms when________
Atoms share electrons
What are electrolytes?
Substances that release ions in water
What are acids?
Electrolytes that disassociate to release hydrogen ions in water
What are bases?
Substances that release ions that combine with hydrogen ions
What are salts?
Bases can react with acids to neutralize forming water and electrolytes
Inorganic qualities
Lack Carbon and Hydrogen bonds
Organic qualities
Have Carbon and Hydrogen
Naturally occurs
What are characteristics of carbohydrates?
Carbohydrates provide energy required by cells and they should follow the ratio of two hydrogens for every oxygen or 2 to1
What are characteristics of lipids also known as fats?
Lipids are a group of organic chemicals that are insoluble in water but soluble in organic solvents they are composed of carbon hydrogen and oxygen atoms
What are three main types of lipids found in cells?
Fatty acids, saturated fatty acids, unsaturated fatty acids
List three functions of proteins
Enzymes, amino acids, conformations
What are the some characteristics of nucleic acid’s?
Complex nucleic acid‘s include Adams of carbon, hydrogen, oxygen, nitrogen, and phosphorus which are the building blocks of nucleotides
Explain the functions of nucleic acid‘s
No click acids carry the instructions in the form of genes and control the actions of cells by ending the amino and acid sequences of protein
