ATAR Human Biology - Unit 3 Exam
Questions and Answers
Independant variable - Correct Answers -The thing that will be changed in each
experiment
Dependant variable - Correct Answers -What is being measured in the experiment
Repetition - Correct Answers -Doing the same experiment many times
Replication - Correct Answers -Having a number of identical experiments running at the
same time or doing the experiment on a large number of subjects at the same time
Homeostasis - Correct Answers -Process by which organisms maintain a relatively
stable internal environment despite fluctuations in external environment
Exocrine glands - Correct Answers -Secretes into a duct that carries the secretion to the
body surface or to one of the body cavities
Endocrine glands - Correct Answers -Secretes hormones into the extracellular fluid that
surrounds the cells that make up the glands
Hormones - Correct Answers -The secretion of an endocrine gland
- May be proteins, amines or steroids
Enzyme amplification - Correct Answers -How one hormone activates the
manufacture/activation of thousands of enzyme molecules
Hormone clearance - Correct Answers -Hormones are broken down in target cells or
liver and kidneys
Then excreted either in the bile or urine
Control of hormone secretion - Correct Answers -Hormonal secretions are regulated by
negative feedback systems
- Response created by secretion of the hormone is opposite to the stimulus that caused
the secretion
Protein and amine hormones - Correct Answers -(A type of hormones) - WATER
SOLUBLE
Group of hormones that work by attaching to receptor proteins in the membrane of the
target cell
, - The combo causes a secondary messenger to diffuse through the cell and activate
particular enzymes
Steroid hormones - Correct Answers -(A type of hormone) - FAT SOLUBLE
Works by entering target cells and combining with a receptor protein inside the cell
- The hormone-receptor complex activates the gene controlling the formation of
particular proteins
Hypothalamus - Correct Answers -Tells the pituitary gland what to do
- Controls secretion of hormones
- Influences basic needs behaviour (thirst, breathing, etc.)
- A part of the brain
Pituitary gland - Correct Answers -Master gland
-Regulates and controls the activities of all other endocrine glands
Follicle stimulating hormone - Correct Answers -A hormone secreted by the anterior
pituitary gland that promotes the formation of ova or sperm
Virulence - Correct Answers -Microorganisms with a reduced ability to produce disease
symptoms
Antibiotics - Correct Answers -Targets bacterial infections
Actinomycetes - Correct Answers -Bacteria that produce mould-like branching filaments
- These substances interfere with protein synthesis in the cells of the target bacteria
Bactericidal antibiotics - Correct Answers -A type of antibiotic
- Kills bacteria by changing the structure of the cell wall or membrane or by disrupting
the action of essential enzymes
Lutenising hormone - Correct Answers -Anterior pituitary
- Ovulation and egg release, maturation of egg, release of testosterone in males.
Growth hormone - Correct Answers -Anterior pituitary
- Stimulates growth
Thyroid stimulating hormone - Correct Answers -Anterior pituitary
- Stimulates thyroid gland
ACTH - Correct Answers -(Adrenocorticotropic hormone)
Produced by the anterior pituitary
- Stimulates the adrenal cortex to release hormones
Prolactin - Correct Answers -Anterior pituitary
- Stimulates milk production
Questions and Answers
Independant variable - Correct Answers -The thing that will be changed in each
experiment
Dependant variable - Correct Answers -What is being measured in the experiment
Repetition - Correct Answers -Doing the same experiment many times
Replication - Correct Answers -Having a number of identical experiments running at the
same time or doing the experiment on a large number of subjects at the same time
Homeostasis - Correct Answers -Process by which organisms maintain a relatively
stable internal environment despite fluctuations in external environment
Exocrine glands - Correct Answers -Secretes into a duct that carries the secretion to the
body surface or to one of the body cavities
Endocrine glands - Correct Answers -Secretes hormones into the extracellular fluid that
surrounds the cells that make up the glands
Hormones - Correct Answers -The secretion of an endocrine gland
- May be proteins, amines or steroids
Enzyme amplification - Correct Answers -How one hormone activates the
manufacture/activation of thousands of enzyme molecules
Hormone clearance - Correct Answers -Hormones are broken down in target cells or
liver and kidneys
Then excreted either in the bile or urine
Control of hormone secretion - Correct Answers -Hormonal secretions are regulated by
negative feedback systems
- Response created by secretion of the hormone is opposite to the stimulus that caused
the secretion
Protein and amine hormones - Correct Answers -(A type of hormones) - WATER
SOLUBLE
Group of hormones that work by attaching to receptor proteins in the membrane of the
target cell
, - The combo causes a secondary messenger to diffuse through the cell and activate
particular enzymes
Steroid hormones - Correct Answers -(A type of hormone) - FAT SOLUBLE
Works by entering target cells and combining with a receptor protein inside the cell
- The hormone-receptor complex activates the gene controlling the formation of
particular proteins
Hypothalamus - Correct Answers -Tells the pituitary gland what to do
- Controls secretion of hormones
- Influences basic needs behaviour (thirst, breathing, etc.)
- A part of the brain
Pituitary gland - Correct Answers -Master gland
-Regulates and controls the activities of all other endocrine glands
Follicle stimulating hormone - Correct Answers -A hormone secreted by the anterior
pituitary gland that promotes the formation of ova or sperm
Virulence - Correct Answers -Microorganisms with a reduced ability to produce disease
symptoms
Antibiotics - Correct Answers -Targets bacterial infections
Actinomycetes - Correct Answers -Bacteria that produce mould-like branching filaments
- These substances interfere with protein synthesis in the cells of the target bacteria
Bactericidal antibiotics - Correct Answers -A type of antibiotic
- Kills bacteria by changing the structure of the cell wall or membrane or by disrupting
the action of essential enzymes
Lutenising hormone - Correct Answers -Anterior pituitary
- Ovulation and egg release, maturation of egg, release of testosterone in males.
Growth hormone - Correct Answers -Anterior pituitary
- Stimulates growth
Thyroid stimulating hormone - Correct Answers -Anterior pituitary
- Stimulates thyroid gland
ACTH - Correct Answers -(Adrenocorticotropic hormone)
Produced by the anterior pituitary
- Stimulates the adrenal cortex to release hormones
Prolactin - Correct Answers -Anterior pituitary
- Stimulates milk production
