WorksheetsSCSHS- Osmoregulation: Animals & Plants
Total questions: 40
Worksheet time: 20mins
ADH
Inhibits the absorption of water in the proximal convoluted tubule
Inhibits the absorption of water in the distal convoluted tubule
Increases the absorption of water in the proximal convoluted tubule
Increases the absorption of water in the distal convoluted tubule
ADH is released from the pituitary gland into the:
Circulatory system
Endocrine system
Nervous system
All of the above
When ADH is secreted, urine will:
Be more dilute
Be more concentrated
Have a larger volume
All of the above
When an organism has sweated a great deal and has not drank much water, this will be detected as:
Low blood pressure
Low blood volume
High blood concentration
All of the above
Cells that detect high blood concentration are called:
Chemoreceptors
Osmoreceptors
Thermoreceptors
Nociceptors
Changes in blood volume and concentration are detected in the brain cells in the:
Posterior Pituitary Gland
Anterior Pituitary Gland
Thalamus
Hypothalamus
Recall where in the nephron ultrafiltration occurs.
Proximal convoluted tubule
Collecting duct
Urethra
Bowman's capsule
Recall where in the nephron reabsorption of glucose occurs.
Loop on Henle
Bowman's capsule
Proximal convoluted tubule
Distal convoluted tubule
Recall what structure carries filtrate from the nephron to the renal pelvis.
Collecting duct
Bowman's capsule
Loop of Henle
Distal convoluted tubule
State what urine is a combination of
Faecal matter
Water
Blood
Salts
Urea
Which label shows the urethra?
A
B
C
D
Which part(s) of the nephron are affected by anti-diuretic hormone ADH?
proximal convoluted tubule
loop of Henle
Bowman's capsule
distal convoluted tubule
collecting duct
sodium and postassium ions are pumped out of the ascending limb of the loop of the Henle to
create a high water potential in the medulla
create a low water potential in the medulla
excrete excess ions into the urine
allow water to be reabsorbed into the proximal convoluted tubule by osmosis
What would you find in the urine of a healthy person? Choose all that apply.
salts
water
urea
glucose
proteins
Which of the following is nitrogenous waste?
urea
salts
amino acids
glucose
What is filtered out of the blood at 1? Choose all that apply.
salts
water
glucose
proteins
urea
What returns to the capillaries at 2? Choose all that apply.
salts
water
glucose
proteins
urea
Anti-diuretic hormone (ADH) is released by which gland of the endocrine system
Thyroid
Pituitary
Ovaries
Adrenal
what happens after the receptors in the stimulus-response model of osmoregulation?
osmoreceptors
reabsorption of water back into blood
tubules and ducts remove water from filtrate
factors influencing water/solute balance in osmoregulation:
drinking water
increased heart rate
exercise
digestion
When you are hot, your body sweats to cool you down. This means your temperature went above normal and your body sweats to counteract that change to bring you back to normal. What kind of feedback loop would this be?
Negative Feedback Loop
Positive Feedback Loop
Neutral Feedback Loop
Linear Feedback Loop
Which of the following statements is true?
The dscending limb is impermeable to water
The ascending limb is permeable to water
The ascending limb is impermeable to water
What is a negative feedback system?
When the response causes a change in the opposite direction to the original stimulus.
When the original stimulus causes a response that amplifies the stimulus further
When the response does not have a great enough of an effect to respond to the stimulus.
When the hypothalamus secrets an inhibitory factor.
What is a positive feedback system?
When the response causes a change in the opposite direction to the original stimulus.
When the original stimulus causes a response that amplifies the stimulus further
When the response does not have a great enough of an effect to respond to the stimulus.
When the hypothalamus secrets an inhibitory factor.
In a feedback loop, what is the stimulus?
The change in internal or external environment that is outside of homeostatic ideals.
Special cells that detect the stimulus.
The control centre that receives information from the receptor, integrates it and sends it to the effector.
The muscle/organ/gland which causes the response.
In a feedback loop, what is the receptor?
The change in internal or external environment that is outside of homeostatic ideals.
Special cells that detect the stimulus.
The control centre that receives information from the receptor, integrates it and sends it to the effector.
The muscle/organ/gland which causes the response.
In a feedback loop, what is the effector?
The change in internal or external environment that is outside of homeostatic ideals.
Special cells that detect the stimulus.
The control centre that receives information from the receptor, integrates it and sends it to the effector.
The muscle/organ/gland which causes the response.
The hormone that lowers blood sugar is
glucose
glycogen
glucagon
insulin
What causes blood glucose levels to rise?
eating
vigorous exercise
sleeping
going to the toilet
Cells that detect high blood concentration are called:
Chemoreceptors
Osmoreceptors
Thermoreceptors
Nociceptors
What are the functions of stomata cells?
(Select all that apply)
Allowing plants to take in CO2
Providing the cell with energy
Reducing water loss
Cell reproduction
Gas exchange
What are the storage cells called?
Mitochondria
Nucleus
Vacuoles
Cytoplasm
The protective film covering the epidermis of plants is called a:
Rhizome
Cytoplasm
Organelle
Cuticle
What is the function of abscisic acid?
Controlling the Rough ER
Controlling the guard cells that open and close the stoma
Initiating movement
Aiding in the production of sugars
What type of plants are best suited to aquatic environments?
Mesophytes
Hydrophytes
Xerophytes
Sophytes
What type of plants are best suited to dry/arid environments?
Xerophytes
Sophytes
Hydrophytes
Mesophytes
What type of plants are best suited to humid or average environments?
Xerophytes
Hydrophytes
Sophytes
Mesophytes
What is the function of the cuticle?
Maintaining moisture through creating a protective barrier
Making the nail bed look bad
Transferring energy through photosynthesis
To stop the leaf from wilting
