BIO 256 Exam Questions with Verified
Answers
Which of the following would NOT be a necessary life function? - Answer-decay
Which of the following statements is MOST CORRECT in reference to homeostatic
imbalance? - Answer-It is considered the cause of most diseases
Which would be a normal measure of arterial blood pH? - Answer-7.43
Which would be a NORMAL measure of oxygen in arterial blood? - Answer-18.1
ml/100ml
One example of positive feedback is: - Answer-oxytocin release during childbirth
Which body fluid compartment drains fluid from between cells, returning it to the blood?
- Answer-lymph
Which organ would get the least amount of body flow during the running of a marathon?
- Answer-small intestine
Which is a major element of the human body? - Answer-carbon
Which is an inorganic molecule? - Answer-NaCl
Water does NOT - Answer-dissolve triglycerides
Which releases OH- in water? - Answer-bases
Which pH would be considered alkaline? - Answer-pH 9.6
If you add a small amount of vinegar (a weak acid) to a buffer, the buffer's pH will -
Answer-stay the same
When molecules have the same chemical formula, arranged in the same sequence, but
differing only in their spatial orientation of key function groups, producing D-isomers and
L-isomers they are called - Answer-stereoisomers
Fatty acids and glycerol are parts of - Answer-phospholipids
The components of phospholipids include - Answer-glycerol, fatty acids and a
phosphate group
Monounsaturated fats have ___ double bonds - Answer-one
, Which is part differing in the various amino acids? - Answer-side chain (-R)
We have a much greater variety of proteins than polysaccharides in the body, mainly
because - Answer-there are 20 different amino acid building blocks from which protein
molecules are made
Which is NOT a function of proteins? - Answer-provide genetic code
Which contains your genetic inheritance from your parents? - Answer-DNA
Transcription produces - Answer-RNA
Which is the RNA that brings amino acids to the ribosome where proteins are made? -
Answer-tRNA
Messenger RNA carries genetic information from the chromosomes to the ____ -
Answer-ribosome
If you see polyribosomes when you observe a cell using an electron microscope of the
cell - Answer-making a lot of certain protein
Which is NOT a reason why you and your cells age? - Answer-genes shorten until they
no longer function
If the products of a chemical reaction contain MORE total energy than the reactants, the
reaction must be - Answer-endergonic
The "lock and key model" of enzyme function describes the - Answer-specific fit of a
substrate to its particular enzyme
How do defects in the same metabolic pathway result in different symptoms in different
individuals? - Answer-different enzymes may be defective in the same metabolic
pathway resulting in different diseases
An atom or molecule has been oxidized when - Answer-it has lost some electrons
Which of the following statements describes the role of the electron transport chain? -
Answer-the electron transport chain produces NAD
All of the following are formed as a result of the electron transport chain EXCEPT -
Answer-Carbon Dioxide
To obtain metabolic energy from glycogen, you must first - Answer-break the molecule
into glucose units
Answers
Which of the following would NOT be a necessary life function? - Answer-decay
Which of the following statements is MOST CORRECT in reference to homeostatic
imbalance? - Answer-It is considered the cause of most diseases
Which would be a normal measure of arterial blood pH? - Answer-7.43
Which would be a NORMAL measure of oxygen in arterial blood? - Answer-18.1
ml/100ml
One example of positive feedback is: - Answer-oxytocin release during childbirth
Which body fluid compartment drains fluid from between cells, returning it to the blood?
- Answer-lymph
Which organ would get the least amount of body flow during the running of a marathon?
- Answer-small intestine
Which is a major element of the human body? - Answer-carbon
Which is an inorganic molecule? - Answer-NaCl
Water does NOT - Answer-dissolve triglycerides
Which releases OH- in water? - Answer-bases
Which pH would be considered alkaline? - Answer-pH 9.6
If you add a small amount of vinegar (a weak acid) to a buffer, the buffer's pH will -
Answer-stay the same
When molecules have the same chemical formula, arranged in the same sequence, but
differing only in their spatial orientation of key function groups, producing D-isomers and
L-isomers they are called - Answer-stereoisomers
Fatty acids and glycerol are parts of - Answer-phospholipids
The components of phospholipids include - Answer-glycerol, fatty acids and a
phosphate group
Monounsaturated fats have ___ double bonds - Answer-one
, Which is part differing in the various amino acids? - Answer-side chain (-R)
We have a much greater variety of proteins than polysaccharides in the body, mainly
because - Answer-there are 20 different amino acid building blocks from which protein
molecules are made
Which is NOT a function of proteins? - Answer-provide genetic code
Which contains your genetic inheritance from your parents? - Answer-DNA
Transcription produces - Answer-RNA
Which is the RNA that brings amino acids to the ribosome where proteins are made? -
Answer-tRNA
Messenger RNA carries genetic information from the chromosomes to the ____ -
Answer-ribosome
If you see polyribosomes when you observe a cell using an electron microscope of the
cell - Answer-making a lot of certain protein
Which is NOT a reason why you and your cells age? - Answer-genes shorten until they
no longer function
If the products of a chemical reaction contain MORE total energy than the reactants, the
reaction must be - Answer-endergonic
The "lock and key model" of enzyme function describes the - Answer-specific fit of a
substrate to its particular enzyme
How do defects in the same metabolic pathway result in different symptoms in different
individuals? - Answer-different enzymes may be defective in the same metabolic
pathway resulting in different diseases
An atom or molecule has been oxidized when - Answer-it has lost some electrons
Which of the following statements describes the role of the electron transport chain? -
Answer-the electron transport chain produces NAD
All of the following are formed as a result of the electron transport chain EXCEPT -
Answer-Carbon Dioxide
To obtain metabolic energy from glycogen, you must first - Answer-break the molecule
into glucose units
