click below
click below
Normal Size Small Size show me how
Life Science 3C
life and cells - molecules & life (biochemistry)
Question | Answer |
---|---|
What do all things in the room have in common | matter and energy |
what is matter | anything that has mass and takes up space |
what is energy | anything that brings about change (can hold matter together or break it apart) |
What is food you eat | matter held together by chemical energy |
when something is made up of only one kind of atom it is an | element |
the smaller structures inside a cell are | molecules |
what are atoms | the smallest unit of an element |
what makes up a molecule | atoms |
a group of atoms held together by the energy of chemical bonds | molecule |
what are the 4 categories of molecules that are essential to life | Carbohydrates, Proteins, Nucleic Acids, Lipids |
is made up of CHO and supplies energy for cell processes and some are important parts of cell structures | carbohydrates |
examples of carbohydrates | glucose, cellulose,starch,glycogen,sugar |
what are proteins | building blocks of many structures in organisms and are involved in almost everything that happens in a living cell |
What are proteins made up of | amino acids |
What is an enzyme | a protein that regulates nearly all chemical reactions in a cell |
Nucleic Acids are made up of | Nucleotides |
DNA | (nucleic acid) carries info that directs each cells activities |
RNA | (nucleic acid) needed to make enzymes and other proteins |
fats | Lipids |
do not mix with water; store and release even larger amounts of energy than carbohydrates | Lipids |
What is the function of a lipid | energy storage |
what are membranes that are made largely of lipids | phospholipids |
RNA is a | nucleic acid |
DNA is a | nucleic acid |
any substance that cannot be broken down into simpler substances | element |
breaks matter apart | energy |
There are approx ___ amino acids | 20 |
Nucleotides make up | nucleic acids |
What is a sugar | a carbohydrate |
Carbohydrates are made up of | CHO or carbon, hydrogen, oxygen |
Glucose is a | carbohydrate |
Starch is a | carbohydrate |
what is the smallest unit that can be alive | cell |
Cellulose is an example of a | carbohydrate |
what holds matter together | energy |
molecules made up of amino acids are | proteins |
anything that brings about change is | energy |
name 4 categories essential to life | carbohydrate, proteins, nucleic acids and lipids |
Glycogen is an example of a | carbohydrate |