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Bio Lab: Chemical Composition of Cells Review
Terms in this set (32)
All organisms consist of basic units of matter called ________
Inorganic molecules are associated with nonliving things, and _________ are associated with living organisms.
In this laboratory, you will be studying the biomolecules of cells:
Large biomolecules, sometimes called macromolecules, form during _______ reactions when smaller molecules bond as water is given off.
During _________ reactions, bonds are broken as water is added.
A fat contains one _____ and three ________ _______.
Proteins and some carbohydrates (called polysaccharides) are _______ because they are made up of smaller molecules called subunits.
What is the positive control?
It goes through all the steps in the experiment and does contain the substances being tested.
What is the negative control?
It goes through all the steps in the experiment and does not contain the substances being tested.
What benefit is the positive control?
The positive control gives you a standard by which to tell if the substance being tested is present in an unknown sample.
What benefit is the negative control?
Negative control ensures that the experiment is giving reliable results.
Function of antibody?
Proteins that combine pathogens so that the pathogens are destroyed in the body.
Function of Transport proteins?
Combine with and move substances from place to place.
Function of hemoglobin?
Transports oxygen throughout the body.
Function of insulin?
regulates the glucose level in the blood
Function of enzymes?
proteins that speed up a chemical reaction.
Proteins are made up of ______ ______ joined together.
About ____ different common amino acids are found in cells.
All amino acid has an _____ group and _____ group. They differ by the ___ group attached to the carbon atom/
A chain of two or more amino acids is called a _____, and the bond between the amino acids is called a _____ _____.
A ________ is a very long chain of amino acids.
_______ include sugars and molecules that are chains of sugars.
Glucose, which has only one sugar unit, is a _________; maltose, which has two sugar units, is a ______.
List three polysaccharides.
Glucose is used by all organisms as an _______ source.
____ are compounds that are insoluble in water and soluble in solvents, such as alcohol and ether.
list four lipid molecuels.
What is the difference between a fat molecule and a vegetable oil?
fatty acids in veg oil tend to have more double bonds between carbons than those in fat. Double bonds cause the veg oil to stay liquid.
Reagent and color for protein.
Reagent and color for starch.
Reagent and color for simple sugars.
Benedict: range between green to red
Reagent and observation for lipids.
Brown paper towel: leaves oily spot
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