Biology 103 Exam Questions and Correct Answers

Organic Molecules contain _____ and _____ Answer: Carbon and Hydrogen Characteristics of organic molecules Answer: -have covalent bonds -have many atoms -associated with living things Characteristics of inorganic molecules Answer: -have ionic bonds -small # of atoms -associated with nonlivi...

Subatomic particles Answer: Tiny entities of matter Protons, Neutrons, Electrons Atoms Answer: Building block of all substances Molecules Answer: Group of atoms bonded together Organelles Answer: Any number of organized or specialized structures within a living cell Cells Answer: Smallest ...

reduction ~ Gain of electrons by an atom or molecule with a concurrant storage of energy: in biological systems, the electrons are accompanied by hydrogen ions ribozyme ~ RNA molecule that can catalyze chemical reactions substrate ~ reactant in a reaction controlled by an enzyme vitami...

What is the endomembranous system? ~ Helps compartmentalize the cell for efficient work. Made of membranes connected directly OR by vesicle transfer. (Also restricts enzyme reactions to certain areas.) Which organelles are involved in the endomembranous system? ~ Endoplasmic reticulum Go...

The 4 nitrogen bases in DNA are: ~ 1) Adenine 2) Thymine 3) Cytosine 4) Guanine RNA ( ribonucleic acid) is made up of: (3 things) ~ 1) sugar- ribose 2) phosphate 3) 4 bases The 4 bases in RNA are: ~ 1) Adenine 2) Uracil 3) Guanine 4) Cytosine ATP (Adenosine Triphosphate) consist ...

are most prescription drugs currently used in the US originally derived from living organisms? ~ true globally forests restore the climate by incorporating _____ from the atmosphere ~ carbon dioxide most common cause of species extinction? ~ habitat loss are islands susceptible to en...

Lamarck proposed ~ a mechanisms for evolution through the idea of acquired characteristics, which is incorrect Malthus suggested that ~ war, famine, and disease were necessary to keep populations from growing too large Lyell described ~ the Earth as having forces that cause change tha...