Q1.Any toxicant that affect the motility of sperm will—– success of fettilization??
- Directly affect
- Not affect
- Partially affect
- All of these.
Q2.Tributyl tin(TBT) affect on sperm—–which also affect function of sperm?
- Energy production
- Ion balance
- None of these
Q3.In spermatozoans the interaction of metals with membrane transporters and changes in signaling for motility includes Calcium dependent routes and—–
Q4.The toxicity that takes place during development of an organism,is called??
- Developmental toxicity
- Lethal toxicity
- Sub lethal
Q5.There are no toxicants that could be said to affect only development rather the mode of action may be to affect the?
- Cell cycle
- DNA replication
- Membrane behaviour
- All of these
Q6.Embryos are considered to be——- senstive to toxicants than adult?
Q7.Many genes are actively transcribed than adults,cinsequently more DNA is accessible to toxicant which——possibilty of genotoxic affect.
Q8.The reason,why embryo more senstive than adult?
- Cell division greater
- Cell division slower
- No cell division
- None of these
Q9.In embryo,the structure of tissue is being formed the change in structure of tissue have greater affect than effect on?
- Tissues cellular function
- Chromosome structure
- All of above
Q10.Neurotoxicity,an exposure to a chemical affect function of the—?
- Spinal cord
- Nervous system
- Endocrine system
Q11.The Neurotoxicity break the?
- Neuromuscular junction
- Axon of Neuron
- Dendrite of Neuron
- Cell body
Q12.The transmitors bind to ion,which cause opening of channel in result occur?
Q13.Which is the most important neurotranmitter in NM junction is—- which broken down in acetylcholinsterase catalyzed reaction..
- Dalta mathrine
Q14.Pyrethroids and DDT target sodium channels ——–proper closure?
Q15.Lindane and Dieldrin facilitate exitation by decreasing —–flow?
- sodium ions
- Potasium ions
GABARGIC chloride flow
- Exposure rate of a chemical determined by;
- Properties of action c. mode of toxic action
- Ability of organism d. all of above
- Biotransformation determines?
- Rate of exposure b. categorize toxicity c. both
- chemical that are susceptible to bio transformation?
- low molecular weight hydrogen c. low molecular weight carbon
- low molecular weight hydrocarbons
- Biotransformation of chemicals have ……
- Long half-life b. Short Half life c. average life
- Short half life of chemicals in organisms & excreted……….
- Rapidly b. Moderate c. slowly
- Short half-life not produce……. effect.
- Harmful b. delayed c. Both options
- Short half-life effect of chemicals mostly common in……environment.
- Artificial aquatic c. natural aquatic c. none of above
- Some toxic effects are;
- Reversible irreversible c. both
- Effect of chemicals may be reversible;
- Normal repair mechanism b. biogenesis mechanism c. none
- Normal repair mechanism, such as
- Regeneration of tissues b. recovery narcosis c. all of these
- Reversible effect in organism only if it can escape;
a.Toxic medium b. toxicant free environment c. all of above
12. whish effect is eventually cause death.
a. reversible b. irreversible c. both
13. in laboratory effect of reversible & irreversible studied by transferring organism from;
a. media is toxicant b. non toxicant media c. both
14. laboratory effect of reversible & irreversible studied example is;
a. recovery b. non recovery c. hypothetical
15. serious damage/injury to organism may be ;
a. reversible b. irreversible c. both right
1: Dose response is a result of
(a) hydration (b) toxic agents (c) excess nutrients (d) none
2: Toxic agents firstly effect on
(a) structure of organism (b) head of organism (c) gills of organism (d) function of organism
3: Magnitude of the effect is proportional to thw amount of
(a) toxicants (b) water (c) nutrients (d) fluids
4: first factor which can b effect the dose
(a) clarity (b) time (c) intake (d) input
5: Types of exposure are:
(a) ingestion (b) inhalation (c) dermal absorption (d) All of these
6: amount of toxic agents and its response can be depended on its
(a) size (b) measurement (c) both a & b (d) none
7: Effect can be measured and quantified in a
(a) simple way (b) complex way (c) protrusible way (d) none
8: toxic agents enter in our body through
(a)inhalation /breath (b) skin (c) Both a & b (d) none
9: toxic agents can be examined in the presence of
(a) observed response (b) aquatic organism (c) health (d) stress
10: causality is a critical ______ principle
(a) simple (b) quantified (c) toxicological (d) All
11: which thing that can be change during exposure
(a) Chemical (b) pheromones (c) electrons (d) cells
12: what are aquatic organism which live on?
(a) land (b) carpets (c) sand (d) water
13: causality and response of organism is a variety of
(a) Stresses (b) quantity of dose (c) water (d) none
14: specificity of the response is related to
(a) area (b) strength (c) soil (d) concentration of water
15:How much you are exposed or you take into the body
(a) intake (b) output (c) area (d) quantity
1.Ethanol is readily absorbed from the
d.All of these
2.Ethanol is poorly absorbed through
3.Organic mercury is readily absorbed from
d.both a &b
4.Parathion is more toxic to
d.all of these
5.nitrosamines are more toxic to
d.both a & c
6.Antibiotics are selective toxic to
7.Metabolism also known
8.How many types male rats sensitive than female to liver damage from DDT?
9.Female rats are _____ as sensitive to parathion as are male rats.
11._______ is the conversion of a chemical from one form to another by a biological organisms.
12.A toxic substance produced by biological system is specially referred to as a
13.The most common target organ of toxicity is the ______
14.The most rapid exposure to a chemical would occur through when of the following routes _______
15.Absorption of the poison means
a.poison reaches circulation
b. Poison leaves blood to tissues
c. Effect of the poison on receptors
d. None of the above