WorksheetsENVIRONMENTAL TOXICOLOGY
Total questions: 25
Worksheet time: 25mins
You have worked at a chemical facility for 10 years. The facility does not require protective equipment, and you have developed a number of serious health effects in the last 7 years. you are possibly experiencing what type of exposure ????
ACUTE
CHRONIC
The most common target organ of toxicity is the
LUNGS
HEART
SKIN
CENTRAL NERVOUS SYSTEM
What is bioaccumulation
Accumulation of biological entities in a geographical area
accumulation of fossils of plants & animals under layers of mud, rock, sand
Accumulation of fluid in a body part after a toxic exposure
The cumulative effect of several toxicants on the biological system
Exposure to ______ caused environmental hazard in USA in the year 1985.
Methylisocyanate
Carbamate pesticide
Lead in paint
Lead
Which of the hazardous pollutant occurs in plastic?
Lithium
PCBs
Lead
Copper
Which of the following is not present in carbamate insecticides?
Carbaryl
Plant toxin
Physostigmine
Diuron
Eradicants group of Fungicides remove the infection totally.
TRUE
FALSE
Pesticides can regulate plant growth.
TRUE
FALSE
The statement, "All substances are poisons; there is none which is not a poison. Only the dose determines that a thing is not a poison" , is attributed to which of the following?
Hippocrates
Theophrastus
Paracelsus
Orfila
Match the given toxicity effects
DCAB
ABDC
ACBD
DCBA
Identify the correct effects using the given formula
BACD
CABD
ACBD
BCAD
LD50 (Lethal Dose 50%) is a statistically derived dose at which 50% of the animals will be expected to die
TRUE
FALSE
LOAEL stands for
(a)
Minamata diseae caused by ------- poisoning?
(a)
Identify the process from an image
Bioaccumualation
Biomagnification
Bioactivation
Biotransformation
Which one of the elements is not required by our body?
Selenium
Pottasium
Arsenic
Phosphorus
Which is the most likely toxic effect of cosmetics
Allergic contact dermatitis
Local neuronal damage
Local muscular degeneration
Skin corrosion
Sulfur dioxide (SO2) affects the respiratory system by _________
Causing allergy
Forming sulfurous acid in respiratory tract, resulting in
irritation
Carcinogenesis
Respiratory collapse
Which of the following is not a possible route of exposure to a
toxicant in the environment?
Inhalation
Ingestion
Dermal absorption
Transdermal
A particular dose of a substance X is minimal toxic to animal.
Substance Y is also minimal toxic to the animals at the same dose,
but when both the substances are administered together they
show the toxicity several orders of magnitude higher than
compared with individual administrations. This is an example of
Additivity
Synergism
Potentiation
Antagonism
What is the main objective of risk assessment?
To evaluate hazard and minimize the risks
Hazard management
Remediation of contaminated sites
To know the source of pollutants
Risk is the product of
EXPOSURE x RISK
HAZARD x EXPOSURE
HAZARD x RISK
EXPOSURE x TOXICITY
Which one of the following is responsible for Blue Baby Syndrome
Nitrates
Phosphates
Arsenic
Fluoride
Bioactivation encompasses the following
A)
A less harmful substance is converted into more
harmful one
B)
It is a process which activates the metabolizing
enzymes in the liver
C)
Bioactivation is a part of biotransformation process
B & C
A & C
(a)
