Biochemistry Flashcards
(100 cards)
1
Q
the study of matter
a. chemistry
b. biochemistry
c. analytical science
d. biology
e. NOTA
A
a. chemistry
2
Q
“Bios” means
a. Earth
b. Water
c. Life
d. Air
A
c. Life
3
Q
it is the basic unit of life
a. molecule
b. cell
c. mitochondria
d. energy
e. blood
A
b. cell
4
Q
the following are exclusive parts of a plant cell, EXCEPT:
a. chloroplasts
b. vacuole
c. cell wall
d. cell membrane
e. plastid
A
d. cell membrane
5
Q
the outermost part of animal cell
a. cell wall
b. cell membrane
c. cytoplasm
d. vacuole
e. plastid
A
b. cell membrane
6
Q
too much water enters the cell-> Swell-> Burst
a. osmosis
b. crenation
c. lysis
d. mitosis
e. apoptosis
A
c. lysis
7
Q
too much water exits the cell-> Shrink
a. osmosis
b. crenation
c. lysis
d. mitosis
e. apoptosis
A
b. crenation
8
Q
Cell wall of bacteria
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
A
c. peptidoglycan
8
Q
Cell wall of plants
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
A
d. cellulose
9
Q
Cell wall of fungi
a. chitin
b. chloroplasts
c. peptidoglycan
d. cellulose
e. vacuole
A
a. chitin
10
Q
regulates the entry and exit of substances in the cells
a. cell wall
b. cell membrane
c. cytoplasm
d. cytosol
e. vacuole
A
b. cell membrane
11
Q
the ff are chemical composition of cell membrane, except
a. phospholipids
b. cholesterol
c. glycolipids
d. glycoproteins
e. NOTA
A
e. NOTA
12
Q
what is the main/major lipid in the cell membrane
a. glycolipid
b. phospholipid
c. cholesterol
d. AOTA
e. NOTA
A
b. phospholipid
13
Q
other name of lecithin
a. phosphatidylcholine
b. phosphatidylethanolamine
d. sphingomyelin
A
a. phosphatidylcholine
14
Q
other name of cephalin
a. phosphatidylcholine
b. phosphatidylethanolamine
d. sphingomyelin
A
b. phosphatidylethanolamine
15
Q
backbone of phosphoglycerides
A
glycerol
16
Q
backbone of sphingolipids
A
sphingosine
17
Q
the bi-regulator of membrane fluidity
a. phospholipid
b. cholesterol
c. glycolipid
d. glycoprotein
e. NOTA
A
b. cholesterol
18
Q
which of the following is not a biopolymer
a. proteins
b. nucleic acid
c. lipids
d. carbohydrates
A
c. lipids
Lipids aren’t polymers since they lack a monomer unit.
19
Q
principal source of metabolic energy
A
glucose
20
Q
strengthen the cell wall of plants
A
cellulose
21
Q
GAGs is made up of:
A
amino sugars + uronic acid derivatives
22
Q
example of GAGs that is important in blood clotting
A
Heparin sulfate
23
Q
segments of DNA that specify proteins
A
Genes
24
total genetic makeup of an organism
Genome
25
which nucleo base/nitrogen base is only found in DNA
Thymine
26
which nucleo base/nitrogen base is only found in RNA
Uracil
27
the following are pyrimidine bases except
a. Thymine
b. Guanine
c. Uracil
d. Cytosine
e. NOTA
b. Guanine
28
Which among the pyrimidine base contains methyl group at 5th carbon?
Thymine
29
the scientists who first obtained X-ray crystallography photographs of fibers of DNA
Maurice Wilkins & Rosalind Franklin
30
they inferred a structural model of the DNA
James Watson & Francis Crick
31
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
32
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
33
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
34
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
35
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
36
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
37
These are membrane-enclosed sacs containing hydrolytic enzymes.
A. Golgi Apparatus
B. Mitochondrion
C. Endoplasmic Reticulum
D. Lysosomes
D. Lysosomes
38
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
39
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
40
These sacs contain enzymes involved in the metabolism of hydrogen peroxide.
A. Peroxisomes
B. Lysosomes
C. Golgi Apparatus
D. Mitochondrion
A. Peroxisomes
41
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
42
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
43
Which organelle is involved in energy production and is found only in eukaryotes?
A. Ribosomes
B. Mitochondria
C. Chloroplasts
D. Cell membrane
B. Mitochondria
44
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
45
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
46
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
47
process called when too much water exits the cell, causing it to shrink?
A. Lysis
B. Plasmolysis
C. Crenation
D. Turgor pressure
C. Crenation
48
Which animal is employed in the bioassay of glucagon?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
B. Cat
49
Which animal is employed in the bioassay of insulin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
D. Rabbit
50
Which animal is employed in the bioassay of parathyroid?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
E. Dog
51
Which animal is employed in the bioassay of digoxin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
C. Pigeon
52
Which animal is employed in the bioassay of oxytocin?
A. Chicken
B. Cat
C. Pigeon
D. Rabbit
E. Dog
A. Chicken
| Female domisticated
53
Which animal is employed in the bioassay of heparin?
A. Chicken
B. Male rat
C. Pigeon
D. Sheep
E. Rabbit
D. Sheep
54
Which animal is employed in the bioassay of vasopressin?
A. Chicken
B. Male rat
C. Pigeon
D. Sheep
E. Rabbit
B. Male rat
55
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)
56
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
57
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
58
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
59
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
60
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
61
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
62
which amino acid contains an pyrrolidine side chain:
a. phenylalanine
b. tyrosine
c. asparagine
d. proline
e. valine
d. proline
| Pro-P
63
which amino acid contains a methyl side chain:
a. alanine
b. arginine
c. asparagine
d. aspartic acid
e. glycine
a. alanine
| Ala-A
64
which amino acid contains a isobutyl side chain:
a. cysteine
b. arginine
c. leucine
d. glutamine
e. histidine
c. leucine
| Leu-L
65
which amino acid contains a imidazole side chain:
a. cysteine
b. arginine
c. leucine
d. glutamine
e. histidine
e. histidine
| His-H
66
which amino acid contains a thioeter side chain:
a. glutamine
b. methionine
c. proline
d. threonine
e. serine
b. methionine
| Met-M
67
which amino acid contains a guanidino side chain:
a. arginine
b. asparagine
c. alanine
d. aspartic acid
e. glutamic acid
a. arginine
| Arg-R
68
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
69
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
70
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
71
which amino acid contains a hydrogen side chain:
a.lysine
b. cysteine
c. glutamine
d. glysine
e. tyrosine
d. glysine
| Gly-G
72
which amino acid contains an phenol side chain:
a.lysine
b. cysteine
c. glutamine
d. glysine
e. tyrosine
e. tyrosine
| Tyr-R
73
which amino acid contains an hydroxymethyl side chain:
a. serine
b. cysteine
c. threonine
d. proline
e. tyrosine
a. serine
| Ser-S
74
which amino acid contains an hydroxyethyl side chain:
a. serine
b. cysteine
c. threonine
d. proline
e. tyrosine
c. threonine
| Thr-T
75
sequence of amino acid
a. primary
b. secondary
c. tertiary
d. quaternary
a. primary
76
local folding of peptide chains
a. primary
b. secondary
c. tertiary
d. quaternary
b. secondary
77
interaction of several polypeptide chains in a multi-subunit protein
a. primary
b. secondary
c. tertiary
d. quaternary
d. quaternary
78
3D arrangement of one polypeptide chain
a. primary
b. secondary
c. tertiary
d. quaternary
c. tertiary
79
the nonprotein component part of an enzyme (Inorganic ions)
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
c. cofactor
80
the nonprotein component part of an enzyme (organic/organometallic)
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
b. coenzyme
81
the protein part of an enzyme
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
e. Apoenzyme
82
the complete active form of an enzyme
a. cosubstrate
b. coenzyme
c. cofactor
d. holoenzyme
e. Apoenzyme
d. holoenzyme
83
a coenzyme tightly/covalently bound in the enzyme protein
a. cosubstrate
b. coenzyme
c. Prosthetic group
d. holoenzyme
e. Apoenzyme
c. Prosthetic group
84
a coenzyme temporarily bound in the enzyme protein
a. cosubstrate
b. coenzyme
c. Prosthetic group
d. holoenzyme
e. Apoenzyme
a. cosubstrate
85
a plasma protein that inhibits proteases involved in forming blood clots.
antithrombin III
86
a GAG that maintain flexibility of tissues; formation of skin and cartilage
chondroitin sulfate
87
a GAG that serves as a structural component of cornea
keratan sulfate
88
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)
89
enzyme
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
C. Catalytic
90
Hormones
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
B. Regulatory
91
IgG, Fibrinogen, Thrombin
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
A. Defensive
92
Albumin, Myoglobin, Hemoglobin
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
D. Transport
93
Casein (milk), Ferritin (iron), Ovalbumin (egg)
A. Defensive
B. Regulatory
C. Catalytic
D. Transport
E. Storage
E. Storage
94
Collagen, Elastin, Keratin
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
A. Structural
95
Actin, Myosin
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
E. Contractile
96
Nicotinic receptors
A. Structural
B. Receptor
C. Catalytic
D. Transport
E. Contractile
B. Receptor
97
Jatropha curcas
Tubang bakod
98
Michelia champaca
Tsampaka
99
cCroton tiglium
Tuba
