4th Flashcards
The color of fruit like papaya is attributed to a pigment which is a precursor of Vitamin A. This substance is
carotene
A hormone secreted by the pancreas that regulates glucose metabolism is called
insulin
The disaccharide formed by ß- glycosidic bond is
lactose
In phototrophic cells, the ______ is the organelle serving as the major cell power in the house
chloroplast
Defined as the quantity of enzymes needed to transform 1.0 micromole of substrate to product per minute at 30°C and optimal pH.
Internaltional unit
The only source that naturally contains vitamin D
fish oil
It states that there is a topographical, structural compatibility between and enzyme
and its substrate
lock and key theory
Plants that are devoid of chlorophyll and are therefore unable to synthesize their own food.
fungi
Which of the following vitamins is water-soluble?
vitamin C
The fundamental cause of sickle-cell disease is a change in the structure of
hemoglobin
It is the major form of stored carbohydrate in animals.
glycogen
Which of the following is a saturated fatty acid?
palmitic acid
A measure of the degree of unsaturation of a fatty acid
iodine number
These are DNA or RNA coated protein that may or may not be considered as living things.
virus
Non-photosynthetic eucaryotes, highly organized with soil as its major habitat
protozoa
Bacteria which grow over the temperature range of 30°C to 40°C are called
mesophiles
Group of microorganisms that grow in the presence of low oxygen concentration are
microaerophils
These are very small bound particles that release digestive enzymes and contribute to the digestion of nutrients in a cell
lysosomes
Hydrolysis of one mole of sucrose gives
I mole of glucose and 1 mole of fructose
The isoelectric point of isoleucine (2.36,9.68) is
6.02
Method used to free milk from disease or germs
Pasteurisation
The power house of the cell is called
Mitochondria
The microorganism utilized in the production of pickles is
lactic acid bacteria
This is the early period of growth where the organism adjusts to its new environment
lag phase
Genetic information is stored in the structure of the DNA molecule. Which of the following obtains the code for protein synthesis from DNA and serves as the template for peptide formation?
messenger RNA
There are several forms suggested by which the hyperbolic Michaelis Menten equation may be expressed linearly. If the substrate concentration, S, is plotted
against reaction velocity, V; a linear plot is obtained. The equation is called
Eisentahl and Cornish-Bowden
The enzyme in the stomach is
pepsin
The organism that reproduces by sporulation is
molds
Organism that grows or uses CO2, as its principal carbon source.
autotroph
a basic amino acid is
lysine
The time to kill all bacteria in a particular culture at a specified temperature.
TDT
These are the most abundant organic molecules in living cells
proteins
Type of bacteria that are considered to be ancient organisms such as methanogends, halobacteria, and thermoacidophiles
archaebacteria
which of the following is not a steroid
prostaglandin
steroid
sex hormone
cholesterol
adrenocortical hormones
Bacteria which convert alcoholic solution to vinegar are
acetobacters
The biological decomposition of organic matter accompanied by the production of foul smelling products in an anaerobic condition is
putrefaction
A waste treatment process by which biologically active growths are continuously circulated with incoming biodegradable waste in the presence of oxygen is
activated sludge process
The temperature at which a microorganism is killed within a period of 10 minutes.
TDP
A visible concentrated growth of algae or other aquatic life/plants is called
bloom
Materials in which microorganisms are grown in a laboratory are
culture media
