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Biochemistry Flashcards

0
Q

Which of these make cellulose indigestible?

a. It is a polymer of glucose subunits
b. It is a fibrous protein
c. The type of linkage between the glucose molecules
d. the peptide linkage between the amino acids molecules
e. The disulfide linkage between polymers

A

c. the type of linkage between the glucose molecules

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1
Q

Which does not contain an N atom?

a. Amino acids and ATP
b. Nucleotides and steroids
c. Cellulose and starch
d. Proteins and Polysacchirides
e. Enzymes and hormones

A

c. Cellulose and starch

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2
Q

A fatty acids is unsaturated if it

a. contains H atoms
b. conains double bands
c. contains an acidic groups
d. bonds to glycogen
e. has low melting point

A

b. contains double bonds

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3
Q

Which of the following about the shape of a polypeptide is false?

a. It is maintained by bonding between parts of th polypeptide
b. It is important to its fucntion
c. It is ultimately dependent on its primary structure
d. It involves hydrogen bonding
e. It is dependent on the strength of peptide bonds.

A

e. It is dependent on the strength of peptide bonds

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4
Q

It contains a sugar, an N- containing base, and a phosphate molecule

A

Nucleotides

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5
Q

Which of the following amino acids are classified as hydrophobic

a. Serine
b. Lysene
c. Phenylalanine
d. Cysteine
e. Glutamic acid

A

c. Phenylalanine

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6
Q

Which of the following amino acids can be treated as a triprotic acid?

a. Glycine
b. Serene
c. Tyosine
d. Lysine
e. Alanine

A

d. Lysine

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7
Q

which of the folloeing are classified as a structural proteins?

a. Hemoglobin
b. Insulin
c. Botox
d. Keratin
e. Histidine

A

d. Keratin

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8
Q

Which of the following is an example of the tertiary structure of proteins?

a. N-phe-ala-gly-trp-gin-C
b. Alpha helix and beta sheets
c. Zinc finger
d. Hydrogen bonds
e. Heteropolymer complex

A

c. Zinc finger

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9
Q

Which of the following type of molecules is always found in virions?

a. DNA
b. RNA
c. protein
d. Carbohydrates
e. Lipids

A

b. RNA

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10
Q

Which of the following mRNA molecules would form the most stable stem-loop structures?

a. 5’….GGCUU…….UUCGG……3’
b. 5’….GGCUU…….AAGCC……3’
c. 5’….GGCUU…….GGCUU…….3’
d. 5’….GGCUU…….CCGAA…….3’
e. 5’….AAGCC…….AAGCC…….3’

A

b. 5’….GGCUU…….AAGCC……3’

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11
Q

Which of the following is a disaccharide?

a. Raffinose
b. Dextrose
c. Lactose
d. Glutathione
e. Amylopectin

A

c. Lactose

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12
Q

Which of the following is a purine found in DNA?

a. Adenine
b. Cytosine
c. Thymine
d. Uracil
e. Caffeine

A

a. Adenine

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13
Q

It is a semiconservative process.

A

Replication

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14
Q

Which of the following is NOT a function of proteins present in the plasma memnrane?

a. assist passage of materials
b. interact with other cells
c. bind and recognize molecules
d. produce lipid molecules
e. carry metals and small molecules

A

d. produce lipid molecule

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15
Q

The lipid found in the cell membrane has a head and two tails, the are found

a. at the surface of the membrane
b. in thr interior of the cell
c. in the interior of the membrane
d. where the environment is hydrophilic
e. outside the cell

A

c. in thr interior of the membrane

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16
Q

These are unspecialized or undifferentiated cells that renew themselves for long periods throuhg cell divisions

A

Stem

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17
Q

Cells which contain ribosomes and nucleoid but without memnrane-bound organelles

A

Prokaryotic

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18
Q

Cells which contain half number of chromosomes of a normal individual and are referred to as haploid

A

gametes

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19
Q

These refer to any biological cell forming the body of an organism

A

Somatic

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20
Q

This term refers to organisms which can survive very salty conditions

A

halophiles

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21
Q

Members of the Archea which survive in soda lakes and basic evironments

A

alkalinophiles

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22
Q

This term refers to organisms which thrive in hot environments

A

thermophiles

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23
Q

Extremophiles which can survive very cold temperatures

A

psychrophiles

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24
Phase in cell division where sister chromatids separate to opposite poles
Anaphase
25
Protein 'packaging plant'
Ribosomes
26
Membrane-bound sacs for storage, digestion and waste removal
Vacuole
27
Stores, separates, and serves as cell's transport system
Rough ER
28
The process by which cancer spreads from one place to many places in the body is referred to as
Metastasis
29
Organelles can be isolated by employing a separation technique referred to as
Differential centrifugation
30
These are the most organic molecules in living cells a. proteins b. carbohydrates c. lipids d. fats
a. proteins
31
Type of bacteria that are considered to be ancient organisms such as methanogens, halobacteria and thermoacidophiles a. archaebacteria b. eurobacteria c. bacteriophage d. virus
b. eurobacteria
32
Which of the following is not a steroid a. sex hormones b. cholesterol c. adrenocortical hormones d. prostaglandin
d. prostaglandin
33
Bacteria which converts alcoholic solution to vinegar are a. coli b. acetobacter c. bacilli d. proteins
b. acetobacter
34
The biological decompositionof organic matter accompanied by the production of foul smelling products in an anaerobic condition is a. pollution b. putrefication c. dissolution d. stabilization
b. putrefication
35
A waste treatment process by which biologically active growths are continuously circulated with incoming biodegradable waste in the presence of oxygen a. activated sludge b. stabilization process c. agitation process d. trickling process
a. activated sludge
36
The temperature at which a microorganism is killed within a period of 10 mins. a. SCP b. TDP c. TDT d. ATP
b. TDP (thermal death phase)
37
A visible concentrated groeth of algae or otheraquatic life/plants is called a. phytoplanktons b. amoeba c. bloom d. zoo-plankton
c. bloom
38
Materials in which microorganisms are grown in a laboratory are a. nutrients b. substrates c. enzymes d. culture media
d. culture media
39
This is the early period of growth where theorganisms adjust to its new environment a. stationary phase b. logarithmic phase c. lag phase d. decline phase
c. lag phase
40
Genetic information is stored in the structure of the DNA molecule. Which of the following obtains the code dor protein synthesis from DNA and serves asthe template for peptide formation a. transfer RNA b. messenger RNA c. ribosomal RNA d. colon
b. messenger RNA
41
There are several forms suggested by which the hyperbolic MIchaelis Menten equation may be expressed linearly. If the substrate concentration S is plotted against velocity, V ; a linear plot is obtained. this equation is called a. Lineweaver and Burke b. Eadie-hostfee c. Hanes-Woolf d. Eisentahl and Cornish-Bowden
d. Eisentahl and Cornish-Bowden
42
The enzyme in yhe stomach is a. urease b. papase c. pepsin d. bromelos
c. pepsin
43
The organisms that reproduces by sparulation is a. bacteria b. molds c. protozoa d. yeast
b. molds
44
Organisms thet grows or uses CO2 as its principal carbon source a. autotroph b. aerobe c. mesophile d. heterotroph
a. autotroph
45
A basi amino acids is a. alanine b. lysine c. serine d. cysteine
b. lysine
46
The time to kill all bacteria in a particular culture at a specified temperature. a. SCP b. TDP c. TDT d. ATP
c. TDT
47
Bacteria which grow over the temperature range of 30 deg C to 40 deg C are called a. psychrophiles b. hydrophiles c. mesophiles d. thermophiles
c. mesophiles
48
Group of microorganisms that grow in yhe presence of low oxygen concentration are a. pathogens b. bacteria c. fungi d. microaerophiles
d. microaerophiles
49
These are very small bound particles that release digestive enzymes and contribute to the digestion of nutrients in a cell a. Endoplasmic reticulum b. Golgi Bodies c. Lysosomes d. Mitochondria
c. Lysosomes
50
Hydrolysis of one mole of sucrose gives a. 1 mole of glucose and 1 mole of galactose b. 1 mole of glucose and 1 mole of fructose c. 2 moles of glucose d. 1 mole mannose and 1 mole of glucose
b. 1 mole of glucose and 1 mole of fructose
51
Method used to free milk from disease or germs a. Lyophitization b. Pasteurization c. Fermentation d. Putrefication
b. Pasteurization
52
The powerhouse of the cell is called a. Nucleus b. Mitochondria c. Lysosome d. Cytoplasm
b. Mitochondria
53
The microorganisms utelize in the production of pickles is a. acetobacter b. lactic acid and bacteria c. streptomyces griseus d. arpergillus sojae
b. lactic acid and bacteria
54
The color of the fruit like papaya is attributed to a pigment which is a precursur of Vitamin A. This substance is a. lecithin b. carotene c. lipoprotein d. reboflavin
b. carotene
55
A hormone secteted by the pancreas that regulates glucose metabolism is a. bile b. insulin c. alanine d. cortisol
b. insulin
56
The disaccharide from beta-glycosidic bond is a. sucrose b. lactose c. maltose d. glucose
b. lactose
57
In phototropic cells, the ______ is the organelle serving as the major cell power house a. mitochondria b. chloroplast c. lysosomes d. Golgi bodies
b. chloroplast
58
# Define asthe quantity of enzymes needed to transform 1.0 micromole of substrate to product per minute at 30 deg Celsius and optimal pH a. International Unit b. Enzyme unit c. Catalytic unit d. all of these
a. International Unit
59
The only source that naturally contains vitamins D a. Sunlight b. Meat c. Fish Oil d. Orange
c. Fish Oil
60
Which of the following vitamins is water-soluble a. Vitamin C b. Vitamin A c. Vitamin D d. Vitamin E
a. Vitamin C
61
It states that there is a topographical, structural compatibility between an enzyme and its substrate a. Lock and Key theory b. Michaelis Menten Model c Briggs-Haldane Model d. Compatibility Theory
a. Lock and Key theory
62
Plants that are devoid of chlorophyll and are therfore unable to synthesize their own food a. Fungi b. bacteria c. virus d. none ofthese
a.fungi
63
The fundamental cause of sickle-cell disease is a change in the structure of _______ a. red cells b. hemoglobin c. capillaries d. blood
b. hemoglobin
64
It is the major form of stord carbohydrates in animals a. glycogen b. starch c. amylose d. amylopectin
a. glycogen
65
Which of thefollowing is sturated fatty acids? a. oleic acids b. linoleic acids c. arachidonic d. palmitic acid
d. palmitic acid
66
A measure of a degree of unsaturation of a fatty acids a. Acid Number b. Iodine Number c. Saponification Number d. Deborah Number
b. Iodine Number
67
These DNA or RNA coated protein that may or may not be considered as living things a. protozoa b. bacteria c. algae d. virus
d. virus
68
Non-photosynthetic eucaryotes, highly organized with soil as its major habitat. a. fungi b. virus c. protozoa d. bacteria
c. protozoa

Physical & Chemical Principles (6 decks)

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