BCH 3025 Exam 1 Extra UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Which is a list of organelles?
A) Mitochondria, chromatin, endoplasmic reticulum
B) Peroxisomes, lysosomes, plasma membrane
C) Proteasomes, peroxisomes, lysosomes
D) Mitochondria, endoplasmic reticulum, peroxisomes
E) All of the above - CORRECT ANSWER - Mitochondria, endoplasmic reticulium,
peroxisomes
The catalog of all proteins functioning in a cell is the:
A) metabolome.
B) proteasome.
C) lysosome.
D) proteome.
E) genome. - CORRECT ANSWER - proteome
Use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoautotrophs, and d)
photoheterotrophs and identify the answer that correctly finishes the statement:
Carnivores are and herbivores are - CORRECT ANSWER - B, B
Both chemoheterotrophs
When two genes in an organism share detectable sequence similarity, those genes or their gene
products, are said to be:
A) homologues.
B) orthologues.
C) paralogues.
, D) A and B.
E) A and C - CORRECT ANSWER - A) Homologues
C) Paralogues
Both A and C
Which two amino acids differ from each other by only one atom?
A) Ser and Thr
B) Leu and Ile
C) Ala and Ser
D) Asp and Asn
E) Ser and Cys - CORRECT ANSWER - Ser and Cys
At pH 7.0, converting a proline to hydroxyproline, will have what effect on the overall charge of
the protein containing it?
A)It will become more negative
B)It will become more positive.
C)It will stay the same.
D)There is not enough information to answer the question. E)The answer depends on the salt
concentration. - CORRECT ANSWER - It will stay the same
A nonapeptide was determined to have the following amino acid com
position: (Lys)2, (Gly) 2, (Phe) 2, His, Leu, Met. The native peptide was incubated with 1-
fluoro-2,4-dinitrobenzene (FDNB) and then hydrolyzed; 2,4-dinitrophenylhistidine was
identified by HPLC. When the native peptide was exposed to cyanogen bromide(CNBr), an
octapeptide and free glycine were recovered. Incubation of the native peptide with trypsin gave a
pentapeptide, a tripeptide, and free Lys. 2,4-Dinitrophenyl-histidine was recovered from the
pentapeptide, and 2,4-dinitrophenylphenylalanine was recovered
from the tripeptide. Digestion with the enzyme pepsin produced a dipeptide, a tripeptide, and a
tetrapeptide. The tetrapeptide was composed of (Lys) 2, Phe, and Gly. The native sequence was
determined to be - CORRECT ANSWER - His-Leu-Phe-Gly-Lys-Lys-Phe-Met-Gly
ACTUAL Exam Questions and CORRECT
Answers
Which is a list of organelles?
A) Mitochondria, chromatin, endoplasmic reticulum
B) Peroxisomes, lysosomes, plasma membrane
C) Proteasomes, peroxisomes, lysosomes
D) Mitochondria, endoplasmic reticulum, peroxisomes
E) All of the above - CORRECT ANSWER - Mitochondria, endoplasmic reticulium,
peroxisomes
The catalog of all proteins functioning in a cell is the:
A) metabolome.
B) proteasome.
C) lysosome.
D) proteome.
E) genome. - CORRECT ANSWER - proteome
Use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoautotrophs, and d)
photoheterotrophs and identify the answer that correctly finishes the statement:
Carnivores are and herbivores are - CORRECT ANSWER - B, B
Both chemoheterotrophs
When two genes in an organism share detectable sequence similarity, those genes or their gene
products, are said to be:
A) homologues.
B) orthologues.
C) paralogues.
, D) A and B.
E) A and C - CORRECT ANSWER - A) Homologues
C) Paralogues
Both A and C
Which two amino acids differ from each other by only one atom?
A) Ser and Thr
B) Leu and Ile
C) Ala and Ser
D) Asp and Asn
E) Ser and Cys - CORRECT ANSWER - Ser and Cys
At pH 7.0, converting a proline to hydroxyproline, will have what effect on the overall charge of
the protein containing it?
A)It will become more negative
B)It will become more positive.
C)It will stay the same.
D)There is not enough information to answer the question. E)The answer depends on the salt
concentration. - CORRECT ANSWER - It will stay the same
A nonapeptide was determined to have the following amino acid com
position: (Lys)2, (Gly) 2, (Phe) 2, His, Leu, Met. The native peptide was incubated with 1-
fluoro-2,4-dinitrobenzene (FDNB) and then hydrolyzed; 2,4-dinitrophenylhistidine was
identified by HPLC. When the native peptide was exposed to cyanogen bromide(CNBr), an
octapeptide and free glycine were recovered. Incubation of the native peptide with trypsin gave a
pentapeptide, a tripeptide, and free Lys. 2,4-Dinitrophenyl-histidine was recovered from the
pentapeptide, and 2,4-dinitrophenylphenylalanine was recovered
from the tripeptide. Digestion with the enzyme pepsin produced a dipeptide, a tripeptide, and a
tetrapeptide. The tetrapeptide was composed of (Lys) 2, Phe, and Gly. The native sequence was
determined to be - CORRECT ANSWER - His-Leu-Phe-Gly-Lys-Lys-Phe-Met-Gly
