Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

BCH 3025 exam questions organelles list cell biology exam help BCH 3025 study guide mitoch, Exams of Biology

Weill Cornell MedicineBiology

BCH 3025 exam questions organelles list cell biology exam help BCH 3025 study guide mitochondria functions endoplasmic reticulum structure peroxisomes biology

Typology: Exams

2024/2025

Available from 06/17/2025

Prof.Humphrey
Prof.Humphrey 🇺🇸

59 documents

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
BCH 3025 Exam 1 Extra Questions
1 / 6
1. 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: Mitochondria, endoplasmic reticulium, peroxisomes
2. The catalog of all proteins functioning in a cell is the:
A)
metabolome.
B)
proteasome.
C)
lysosome.
D)
proteome.
E)
genome.: proteome
3. Use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoau- totrophs, and
d) photoheterotrophs and identify the answer that correctly finishes the statement:
Carnivores are and herbivores are: B, B Both
chemoheterotrophs
4. 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: A) Homologues
C) Paralogues Both
A and C
5. 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: Ser and Cys
6. 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.: It will stay the same
pf3
pf4
pf5

Partial preview of the text

Download BCH 3025 exam questions organelles list cell biology exam help BCH 3025 study guide mitoch and more Exams Biology in PDF only on Docsity!

  1. 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: Mitochondria, endoplasmic reticulium, peroxisomes
  2. The catalog of all proteins functioning in a cell is the: A) metabolome. B) proteasome. C) lysosome. D) proteome. E) genome.: proteome
  3. Use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoau- totrophs, and d) photoheterotrophs and identify the answer that correctly finishes the statement: Carnivores are and herbivores are: B, B Both chemoheterotrophs
  4. 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: A) Homologues C) Paralogues Both A and C
  5. 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: Ser and Cys
  6. 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.: It will stay the same
  1. 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 incubat- ed with 1-fluoro-2,4- dinitrobenzene (FDNB) and then hydrolyzed; 2,4-dinitro- phenylhistidine 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 dipep- tide, a tripeptide, and a tetrapeptide. The tetrapeptide was composed of (Lys) 2, Phe, and Gly. The native sequence was determined to be: - His-Leu-Phe-Gly-Lys-Lys-Phe-Met-Gly
  2. Identify the pair of peptides below that cannot be distinguished by tandem mass spectrometry. A) VTSPLYANEGK and VTCPLYANEGK B) VTSPLYANEGK and VTSPLYADEGK C) VTSPLYANEGK and VTSPIYANEGK D) VTSPLYANEGK and VSTPLYANEGK E) All of the above: VTSPLYANEGK and VTSPIYANEGK
  3. Carbon monoxide (CO) is toxic to humans because: A) it binds to myoglobin and causes it to denature. B) it is rapidly converted to toxic CO2. C) it binds to the globin portion of hemoglobin and prevents the binding of O2. D) it binds to the Fe in hemoglobin and prevents the binding of O2. E) it binds to the heme portion of hemoglobin and causes heme to unbind from hemoglobin.: it binds to the Fe in hemoglobin and prevents the binding of O2.
  4. Neuroglobin is a member of the globin family found in neurons. It is a monomeric protein that helps protect the brain from hypoxia (low O2). Identify the correct statement(s) about neuroglobin below. a) It binds O2 with a hyperbolic binding curve. b) It binds O2 with a sigmoidal binding curve. c) It binds O2 with higher affinity than hemoglobin. d) It binds O2 with lower affinity than hemoglobin.: Both A and C. (It bind O2 with a hyperbolic binding curve and it binds O2 with higher affinity than hemoglobin)
  5. For the simplified representation of an enzyme-catalyzed reaction shown below, the statement "ES is in steady-state"means that: k1 k2 E + SES E + P k-1k- 2 A) k2 is very slow. B) k1= k2.

D) N-acetyl-galactosamine; enzymatically E) galactose; non-enzymatically: glucose; non-enzymatically

  1. When forming the disaccharide maltose from two glucose monosaccha- rides: A) water is eliminated. B) a hemiacetal is converted to an acetal. C) the resulting dissacharide is no longer a reducing sugar. D)Both A and B E)A, B, and C above: Both A and B (water is eliminated and a hemiacetal is converted to an acetal)
  2. Which of the following statements about hydrogen bonding in glycogen and cellulose is true? A) Glycogen forms more internal H-bonds than cellulose. B)Extensive internal hydrogen bonding makes cellulose more water soluble than glycogen. C) Extensive hydrogen bonding with water makes cellulose more soluble than glycogen. D) Glycogen primarily forms hydrogen bonds within a single chain. E) The hydrogen bonding in cellulose favors a helical conformation.: Glycogen primarily forms hydrogen bonds within a single chain.
  3. Following complete hydrolysis of a sample of glycogen and a sample of cellulose, which of the following must be true? A) The glycogen sample is more soluble than the cellulose sample. B) The cellulose sample is more soluble than the glycogen sample. C) Both samples consist of a mixture of alpha-D-glucose and beta-D-glucose. D) The glycogen sample has a higher ratio of alpha-D-glucose than the cellu- lose sample. E) The cellulose sample contains only beta-D-glucose.: Both samples consist of a mixture of alpha-D-glucose and beta-D-glucose
  4. Which of the following statements about heparan sulfate is not true? )Sulfation of heparan sulfate to form NS domains is important for its role as an anti- coagulant. B) Heparan sulfate can promote protein-protein interactions via the NS do- mains. C) The secondary structure of heparan sulfate is completely random. D) The NA domains of heparan sulfate contain no sulfation. E)The core re- peating structure of heparan sulfate is made up of alternating GlcNAc and GlcA.: The secondary structure of heparan sulfate is completely random.
  5. Which of the following statements concerning sialic acid residues on glycoproteins is true? A) Sialic residues on erythrocytes are recognized by lectins, leading to removal

of the erythrocytes. B) Sialic residues on ceruloplasmin are recognized by lectins, leading to re- moval of ceruloplasmin. C) Sialic residues are removed by neuraminidases. D) The anti-viral drug oseltamavir accelerates the removal of sialic acid residues. ' E) Both A and B above: Sialic residues are removed by neuraminidases.

  1. Why is it surprising that the side chains of tryptophan residues in lectins can interact with sugars? A) Because the side chain of tryptophan is hydrophilic and sugars are hy- drophobic B) Because the side chain of tryptophan is (-) charged and sugars are generally (+) charged or neutral C) Because the side chain of tryptophan can make hydrogen bonds and sugars cannot. D) Because the side chain of tryptophan is hydrophobic and sugars are gen- erally hydrophilic E) None of the above: Because the side chain of tryptophan is hydrophobic and sugars are generally hydrophilic
  2. Which of the following is not a reason that it is difficult to study oligosac- charide composition from biological systems? A) Oligosaccharides are often branched. B)Oligosaccharides often have a high negative charge density. C)Oligosaccharides have a variety of linkages (e.g., alpha 1 - 6 or alpha1-4). D)Oligosaccharides have too much conformational flexibility. E)There are no specific glycosidase enzymes that can be used to selectively digest oligosaccharides: Oligosaccharides have too much conformational flexibil- ity
  3. Which of the following techniques is not commonly used to study oligosac- charide structures? A) X-ray crystallography B) Matrix-assisted laser desorption/ionization mass spectroscopy (MAL- DI-MS) C) Nuclear magnetic resonance (NMR) D) Complete chemical synthesis E) Oligosaccharide microarrays: X-ray crystallography
  4. Patients with chronic hypoxia (low O2 levels) due to decreased lung func- tion may adapt by increasing their circulating BPG levels. Predict which of the following will be true for such a patient.