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WorksheetsBiochem Exam 1
Total questions: 29
Worksheet time: 15mins
What are the major differences between Eukaryotic and Prokaryotic cells?
Eukaryotic cells are small with a nuclei region. Prokaryotic cells are larger and more complex.
Prokaryotic cells are single-celled and membrane bound. Eukaryotic cells are multi-cellular with nuclei region.
Eukaryotic cells are larger and more complex, have a true nucleus, membrane bound, and multi-cellular with many chromosomes. Prokaryotic cells are small with nucleoid region, single celled, with single chromosomes
There is no difference, they are the same
Plant, animal, protist, and fungi are all apart of
Eukaryotes
Prokaryotes
Which organelle/component is housed in the nucleus and produces rRNA to make ribosomes?
Chromosomes
Histones
DNA
Nucleolus
The Rough ER contains ribosomes and makes glycoproteins and membrane material
True
False
Smooth ER synthesizes lipids and helps with carbohydrate metabolism
False
True
Which of the following statements is true?
Water can solvate to a wide range of organic molecules
Water can solvate to a wide range of inorganic molecules
Water can form hydrogen bonds
All of the above
What is pH?
Negative log H+
Negative log constant
Negative log(10) H+
None of the above
What is pKa?
Negative log of 10
Negative log constant
Negative log of H+
None of the above
pH help manage homeostasis
True
False
Water is dipole because
It has a partial negative and partial positive charge on the molecule
It can move through ion channels
It has a low electronegative oxygen atom present on the molecule
Its affinity is much lower than that of the 2 hydrogens
Hydrogen bonds are especially important for the process of
Protein synthesis
Protein Metabolism
Protein shaping
Protein folding
Amphipathic molecule, is a molecule that has only non polar parts
True
False
List the forces that stabilize molecules from strongest to weakest
Hydrogen, Ionic bonds, Van Der Waals, Covalent bonds
Covalent bonds, Ionic bonds, Van Der Waals, Hydrogen bonds
Van der Waals, Hydrogen bonds , Ionic bonds, Covalent bonds
Covalent bonds, Ionic bonds, Hydrogen Bonds, Van Der Waals
When a polypeptide is formed, which of the following will occur
It will begin folding and its hydrophilic residue will interact with ions
Its hydrophilic residue will interact with water and will begin folding
Its hydrophilic residue will interact with ions and will begin folding
It will begin folding and its hydrophilic residue will interact with water
Proteins that bind to DNA via iconic interactions are
Histones
Lysosomes
Cristae
rRNA
Which of the following statements is true?
Golgi apparatus work with the ER to package and sort in the cell
Mitochondria converts carbohydrates and fats into ATP
Lysosomes are membrane enclosed vesicles that use digestive enzymes to break apart proteins, fats, and polysaccharides.
All the above
The outer membrane of a cell forms with the polar head groups of the lipids on the inside with the hydrophobic tails pointing outside towards the cytoplasm?
False
True
Not enough information
The difference between a strong acid and weak acid is its affinity to dissociate
False
True
What happens when a strong acid like HCL is mixed with water?
it does not dissociate, leaving no salts
it completely dissociates, leaving no salts
it completely dissociates, leaving behind a few salts that soak up OH and H ions
it does not dissociate completely, leaving behind a salts that soak up OH and H ions
What happens when a weak acid like Acetic Acid is mixed with water
it does not dissociate, leaving no salts
it completely dissociates, leaving no salts
it completely dissociates, leaving behind a few salts that soak up OH and H ions
it does not dissociate completely, leaving behind a salts that soak up OH and H ions
Aquaporins are integral protein channels that are responsible for the transmission of water
True
False
Which organ is the most significant location of the Aquaporins expression?
Liver
Bladder
Kidney
None of the above
Transporters catalyze the transfer of molecules by physically binding to them
False
True
Are transporters active or passive?
Active
Passive
Both active and passive
Not active or passive
What are Na/K ATPases
Membrane transporters that utilize energy of ATP hydrolysis to transport Na/K in and out of the cell
Membrane transporters that utilize energy of cAMP hydrolysis to transport Na/K in and out of the cell
Membrane transporters that utilize energy of PLC hydrolysis to transport Na/K in and out of the cell
Membrane transporters that utilize energy to transport Na/K in and out of the cell
What role does ATP play with transporters?
ATP provides the energy required for active transport
ATP is needed to carry molecules across the concentration gradient
Both A and B
None of the above
All transport of molecules into or out of the cell requires energy in the form of ATP?
True
False
Passive transport is
Movement of ions or molecules across a cell membrane from lower concentration to higher concentration
Movement of ions or molecules across a cell membrane from higher concentration to higher concentration
Movement of ions or molecules across a cell membrane from higher concentration to lower concentration
Both A and C
Active transport is
Movement of ions or molecules across a cell membrane from lower concentration to higher concentration
Movement of ions or molecules across a cell membrane from higher concentration to higher concentration
Movement of ions or molecules across a cell membrane from higher concentration to lower concentration
Both A and C
