Biochemistry Flashcards
the study of matter
a. chemistry
b. biochemistry
c. analytical science
d. biology
e. NOTA
a. chemistry
“Bios” means
a. Earth
b. Water
c. Life
d. Air
c. Life
it is the basic unit of life
a. molecule
b. cell
c. mitochondria
d. energy
e. blood
b. cell
the following are exclusive parts of a plant cell, EXCEPT:
a. chloroplasts
b. vacuole
c. cell wall
d. cell membrane
e. plastid
d. cell membrane
the outermost part of animal cell
a. cell wall
b. cell membrane
c. cytoplasm
d. vacuole
e. plastid
b. cell membrane
too much water enters the cell-> Swell-> Burst
a. osmosis
b. crenation
c. lysis
d. mitosis
e. apoptosis
c. lysis
too much water exits the cell-> Shrink
a. osmosis
b. crenation
c. lysis
d. mitosis
e. apoptosis
b. crenation
Cell wall of bacteria
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
c. peptidoglycan
Cell wall of plants
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
d. cellulose
Cell wall of fungi
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
a. chitin
regulates the entry and exit of substances in the cells
a. cell wall
b. cell membrane
c. cytoplasm
d. cytosol
e. vacuole
b. cell membrane
the ff are chemical composition of cell membrane, except
a. phospholipids
b. cholesterol
c. glycolipids
d. glycoproteins
e. NOTA
e. NOTA
what is the main/major lipid in the cell membrane
a. glycolipid
b. phospholipid
c. cholesterol
d. AOTA
e. NOTA
b. phospholipid
other name of lecithin
a. phosphatidylcholine
b. phosphatidylethanolamine
d. sphingomyelin
a. phosphatidylcholine
other name of cephalin
a. phosphatidylcholine
b. phosphatidylethanolamine
d. sphingomyelin
b. phosphatidylethanolamine
backbone of phosphoglycerides
glycerol
backbone of sphingolipids
sphingosine
the bi-regulator of membrane fluidity
a. phospholipid
b. cholesterol
c. glycolipid
d. glycoprotein
e. NOTA
b. cholesterol
which of the following is not a biopolymer
a. proteins
b. nucleic acid
c. lipids
d. carbohydrates
c. lipids
Lipids aren’t polymers since they lack a monomer unit.
principal source of metabolic energy
glucose
strengthen the cell wall of plants
cellulose
GAGs is made up of:
amino sugars + uronic acid derivatives
example of GAGs that is important in blood clotting
Heparin sulfate
segments of DNA that specify proteins
Genes
total genetic makeup of an organism
Genome
which nucleo base/nitrogen base is only found in DNA
Thymine
which nucleo base/nitrogen base is only found in RNA
Uracil
the following are pyrimidine bases except
a. Thymine
b. Guanine
c. Uracil
d. Cytosine
e. NOTA
b. Guanine
Which among the pyrimidine base contains methyl group at 5th carbon?
Thymine
the scientists who first obtained X-ray crystallography photographs of fibers of DNA
Maurice Wilkins & Rosalind Franklin
they inferred a structural model of the DNA
James Watson & Francis Crick
This is a rigid exterior layer found in plant cells that provides structural support.
A. Cell membrane
B. Cell wall
C. Central vacuole
B. Cell wall
This structure separates the cell contents from the outside world, holding organelles and the cytosol in place.
A. Cell membrane
B. Cell wall
C. Central vacuole
D. Nucleus
A. Cell membrane
This membrane-enclosed sac is found in plant cells and is used for storage and maintaining turgor pressure.
A. Lysosomes
B. Mitochondrion
C. Central vacuole
D. Peroxisomes
C. Central vacuole
This organelle is the site of photosynthesis in green plants and algae and contains its own DNA.
A. Golgi Apparatus
B. Mitochondrion
C. Chloroplast
D. Peroxisomes
C. Chloroplast
This is a continuous membrane throughout the cell with a rough part studded with ribosomes, which is the site of protein synthesis.
A. Golgi Apparatus
B. Endoplasmic Reticulum
C. Chloroplast
D. Central Vacuole
B. Endoplasmic Reticulum
This series of flattened membranes is involved in the secretion of proteins from cells and in reactions that link sugars to other cellular components.
A. Golgi Apparatus
B. Endoplasmic Reticulum
C. Lysosomes
D. Peroxisomes
A. Golgi Apparatus
These are membrane-enclosed sacs containing hydrolytic enzymes.
A. Golgi Apparatus
B. Mitochondrion
C. Endoplasmic Reticulum
D. Lysosomes
D. Lysosomes
This organelle is the site of energy-yielding oxidation reactions and contains its own DNA.
A. Golgi Apparatus
B. Mitochondrion
C. Chloroplast
D. Lysosomes
B. Mitochondrion
This is the location of the main genome and the site of most DNA and RNA synthesis.
A. Endoplasmic Reticulum
B. Nucleus
C. Golgi Apparatus
D. Lysosomes
B. Nucleus
These sacs contain enzymes involved in the metabolism of hydrogen peroxide.
A. Peroxisomes
B. Lysosomes
C. Golgi Apparatus
D. Mitochondrion
A. Peroxisomes
Which organelle is found in eukaryotes but not in prokaryotes and is involved in photosynthesis?
A. Mitochondria
B. Nucleus
C. Chloroplasts
D. Ribosomes
C. Chloroplasts
Which organelle is present in both prokaryotes and eukaryotes and is responsible for protein synthesis?
A. Nucleus
B. Mitochondria
C. Endoplasmic Reticulum
D. Ribosomes
D. Ribosomes
Which organelle is involved in energy production and is found only in eukaryotes?
A. Ribosomes
B. Mitochondria
C. Chloroplasts
D. Cell membrane
B. Mitochondria
Which structure is found in eukaryotes but not in prokaryotes and is the site of most DNA and RNA synthesis?
A. Ribosomes
B. Endoplasmic Reticulum
C. Nucleus
D. Chloroplasts
C. Nucleus
Which organelle is a series of flattened membranes involved in secretion and is found only in eukaryotes?
A. Ribosomes
B. Mitochondria
C. Golgi Apparatus
D. Endoplasmic Reticulum
C. Golgi Apparatus
Process called when too much water enters the cell, causing it to swell and burst?
A. Crenation
B. Lysis
C. Osmosis
D. Diffusion
B. Lysis
process called when too much water exits the cell, causing it to shrink?
A. Lysis
B. Plasmolysis
C. Crenation
D. Turgor pressure
C. Crenation
Which animal is employed in the bioassay of glucagon?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
B. Cat
Which animal is employed in the bioassay of insulin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
D. Rabbit
Which animal is employed in the bioassay of parathyroid?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
E. Dog
Which animal is employed in the bioassay of digoxin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
C. Pigeon
Which animal is employed in the bioassay of oxytocin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
A. Chicken
Female domisticated
Which animal is employed in the bioassay of heparin?
A. Chicken
B. Male rat
C. Pigeon
D. Sheep
E. Rabbit
D. Sheep
Which animal is employed in the bioassay of vasopressin?
A. Chicken
B. Male rat
C. Pigeon
D. Sheep
E. Rabbit
B. Male rat
Which animal is employed in the bioassay of tubocurarine?
A. Chicken
B. Male rat
C. Pigeon
D. Sheep
E. Rabbit
E. Rabbit (Head Drop Assay)
which of the following test indicates the presence of cholesterol and has a positive result of emerald green:
a. Liebermann-Burchard
b. Salkowski
c. Acrolein
d. Ammonium molybdate
e. Osmic acid
a. Liebermann-Burchard
which of the following test indicates the presence of cholesterol and has a positive result of red color:
a. Liebermann-Burchard
b. Salkowski
c. Acrolein
d. Ammonium molybdate
e. Osmic acid
b. Salkowski
Test that indicates the presence of phosphate and has a positive result of yellow ppt.
a. Liebermann-Burchard
b. Salkowski
c. Acrolein
d. Ammonium molybdate
e. Osmic acid
d. Ammonium molybdate
osmic acid is a test used to detect the presence of______ and has a black ppt (+):
a. cholesterol
b. glycerol
c. phosphate
d. fats & fixed oils
d. fats & fixed oils
Acrolein is a test used to detect the presence of______ and has a sharp, acrid color (+):
a. cholesterol
b. glycerol
c. phosphate
d. fats & fixed oils
b. glycerol
The following enzyme and its example is a correct match, except:
I. ligases = fumarase, enolase
II. oxidoreductase = dehydrogenase, reductase, oxidase
III. transferase = kinase. transaminase
IV. hydrolase = chymotrypsin, protease, amylase, peptidase, lactase, lysozyme
V. lyase = synthetase, polymerase, carboxylase
VI. isomerase = isomerase, mutase, epimerase
a. I, II
b. III,IV
c. I,V
d. II,III,IV,VI
e. I,II,III,V
c. I,V
which amino acid contains an pyrrolidine side chain:
a. phenylalanine
b. tyrosine
c. asparagine
d. proline
e. valine
d. proline
Pro-P
which amino acid contains a methyl side chain:
a. alanine
b. arginine
c. asparagine
d. aspartic acid
e. glycine
a. alanine
Ala-A
which amino acid contains a isobutyl side chain:
a. cysteine
b. arginine
c. leucine
d. glutamine
e. histidine
c. leucine
Leu-L
which amino acid contains a imidazole side chain:
a. cysteine
b. arginine
c. leucine
d. glutamine
e. histidine
e. histidine
His-H
which amino acid contains a thioeter side chain:
a. glutamine
b. methionine
c. proline
d. threonine
e. serine
b. methionine
Met-M
which amino acid contains a guanidino side chain:
a. arginine
b. asparagine
c. alanine
d. aspartic acid
e. glutamic acid
a. arginine
Arg-R
which amino acid contains an methyl carboxy side chain:
a. arginine
b. asparagine
c. alanine
d. aspartic acid
e. glutamic acid
d. aspartic acid
Asp-D
which amino acid contains an ethyl carboxy side chain:
a. arginine
b. asparagine
c. alanine
d. aspartic acid
e. glutamic acid
e. glutamic acid
Glu-E
which amino acid contains an ethyl carbamoyl side chain:
a. aaspartic acid
b. asparagine
c. glutamine
d. aspartic acid
e. glutamic acid
c. glutamine
Gln-Q
which amino acid contains a hydrogen side chain:
a.lysine
b. cysteine
c. glutamine
d. glysine
e. tyrosine
d. glysine
Gly-G
which amino acid contains an phenol side chain:
a.lysine
b. cysteine
c. glutamine
d. glysine
e. tyrosine
e. tyrosine
Tyr-R
which amino acid contains an hydroxymethyl side chain:
a. serine
b. cysteine
c. threonine
d. proline
e. tyrosine
a. serine
Ser-S
which amino acid contains an hydroxyethyl side chain:
a. serine
b. cysteine
c. threonine
d. proline
e. tyrosine
c. threonine
Thr-T
sequence of amino acid
a. primary
b. secondary
c. tertiary
d. quaternary
a. primary
local folding of peptide chains
a. primary
b. secondary
c. tertiary
d. quaternary
b. secondary
interaction of several polypeptide chains in a multi-subunit protein
a. primary
b. secondary
c. tertiary
d. quaternary
d. quaternary
3D arrangement of one polypeptide chain
a. primary
b. secondary
c. tertiary
d. quaternary
c. tertiary
the nonprotein component part of an enzyme (Inorganic ions)
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
c. cofactor
the nonprotein component part of an enzyme (organic/organometallic)
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
b. coenzyme
the protein part of an enzyme
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
e. Apoenzyme
the complete active form of an enzyme
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
d. holoenzyme
a coenzyme tightly/covalently bound in the enzyme protein
a. cosubstrate
b. coenzyme
c. Prosthetic group
d. holoenzyme
e. Apoenzyme
c. Prosthetic group
a coenzyme temporarily bound in the enzyme protein
a. cosubstrate
b. coenzyme
c. Prosthetic group
d. holoenzyme
e. Apoenzyme
a. cosubstrate
a plasma protein that inhibits proteases involved in forming blood clots.
antithrombin III
a GAG that maintain flexibility of tissues; formation of skin and cartilage
chondroitin sulfate
a GAG that serves as a structural component of cornea
keratan sulfate
which vitamin precursor is not correctly match to its derivative coenzyme?
A. Vit B2: (FAD/FMN)
B. Vit B3: (NAD+NADP+)
C. Vit B6: (PLP)
D. Vit B9: (THF)
E. Vit B12: (TPP)
E. Vit B12: (TPP)
enzyme
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
C. Catalytic
Hormones
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
B. Regulatory
IgG, Fibrinogen, Thrombin
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
A. Defensive
Albumin, Myoglobin, Hemoglobin
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
D. Transport
Casein (milk), Ferritin (iron), Ovalbumin (egg)
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
E. Storage
Collagen, Elastin, Keratin
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
A. Structural
Actin, Myosin
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
E. Contractile
Nicotinic receptors
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
B. Receptor
Jatropha curcas
Tubang bakod
Michelia champaca
Tsampaka
cCroton tiglium
Tuba
