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Zehr:Exam I
biology questions
36
Biology
Undergraduate 1
04/30/2009

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Term
An atom with seven electrons in its outer shell would more than likely for an ion with a charge of
Definition
-1
Term
What is strongest
Definition
covalent bond
Term
Where are ionic bonds most likely to be encountered
Definition
Salts
Term
What kind of reaction is characterized by a loss or gain of electrons?
Definition
Oxidation-reduction
Term
Name a molecule that plays a major roll in many biological oxidation-reduction reactions.
Definition
NAD/NADH
Term
What are organisms that are able to obtain energy directly from the sun? What organisms get energy by consuming other organisms?
Definition
Autotrophs; Heterotrophs
Term
Where does the light reaction of photosynthesis occur? What is produced?
Definition
On thylakoids; ATP
Term
Six elements make up approximately 98% of living things. Which of the following is not one of these six elements?
Definition
Iron
Term
When heat is added to egg white, the egg white becomes more solid. What kinda of chemical bonds are altered by the heat?
Definition
Hydrogen
Term
What forms the greatest part of a living cell?
Definition
Water
Term
In the reaction C6H12O6 + 6O2 -> ?CO2 + ?H O How many molecules of CO2 are formed?
Definition
6
Term
What is the pH of a neutral solution?
Definition
7
Term
Name the structural unit of a protein.
Definition
Amino Acid
Term
Name the structural unit of a carbohydrate.
Definition
Monosaccharide
Term
Sex hormones are steroids. What are steroids?
Definition
Proteins
Term
In oxidation, a molecule loses electrons. The molecule that gains the electrons is said to be
Definition
Reduced
Term
What is the primary structure of a protein?
Definition
The sequence of its basic units
Term
Name the structural unit of an enzyme.
Definition
Amino acid
Term
In dieting, what is meant by "essential amino acids?"
Definition
Amino acids that can not be obtained from plants
Term
Name a hormone produced by fat cells that suppresses appetite.
Definition
Leptin
Term
Which of the following provides energy for most cellular activities?
Definition
ATP
Term
Which of the following is a product of the light reaction?
Definition
ATP, Oxygen, NADPH
Term
Name the carbon dioxide acceptor in C-3 photosynthesis.
Definition
Ribulose bisphosphate
Term
Oxygen, a by-product of photosynthesis, is generated from
Definition
Water
Term
Which of the following is not produced during the dark reaction of photosynthesis?
Definition
Neither Oxygen, Carbon dioxide, or NADPH
Term
In the presence of oxygen, where is most ATP produced?
Definition
Electron transport
Term
What is in the bubble of naturally brewed beer?
Definition
carbon dioxide
Term
How many ATPs are produced in electron transport from one NADH?
Definition
3
Term
What is cellular respiration?
Definition
The release of energy from nutrients
Term
What are organisms called that eat other organisms to obtain energy?
Definition
Heterotrophs
Term
How many ATPs are gained from one molecule of glucose in glycolysis?
Definition
2
Term
Name the last compound formed in glycolysis
Definition
Pyruvic acid
Term
Name the final hydrogen acceptor in electron transport.
Definition
Oxygen
Term
During strenuous activity, pyruvic acid may accept hydrogens from NADH to form
Definition
Lactic acid
Term
Where is most carbon dioxide produced during cellular respiration in the presence of oxygen?
Definition
Krebs cycle
Term
Juvenile onset diabetes (Type I diabetes) occurs in about 4% of the population. Which of the following might be expected in such a diabetic?
Definition
Higher levels of glucose in blood than a normal person, glucose appears in urine, a risk of blindness if its not treated correctly
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