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WorksheetsQLD Biology Unit 1: Cells, Enzymes, Nephron,
Total questions: 34
Worksheet time: 17mins
The location where the enzyme and substrate interact is called the....
Active Site
Lock and Key
Substrate
Induced fit
What type of transport is demonstrated in the following images
Active transport
Facilitated diffusion
Passive diffusion
Osmosis
What process is shown below?
Neurotransmission
Exocytosis
Endocytosis
Cell differentiation
Name parts A, E and D in the plant cell.
A = lysosome, E - chloroplast, D = nucleus
A = vacuole, E = golgi body, D = chloroplast
A = cell wall, E = mitochondria, D = nucleus
A = vacuole, E = mitochondria, D = nucleus
Which of the following is NOT a structural feature that aids gas exchange?
Large surface area to volume ratio
Moist
One or two cells thick
Network of lymph vessels
What is the role of histamines in the immune response?
To engulf and destroy foreign particles.
To increase blood flow to the area, causing inflammation.
To activate B and T lymphocytes
To recognise pathogen antigens
What are capillaries?
Thick-walled blood vessels
Blood vessels leading away from the heart
Blood vessels leading towards the heart
Thin-walled blood vessels
The bulk movement of substances around a plant is called:
Transpiration
Transcription
Translocation
Transportation
What factor decreases the rate of photosynthesis?
leaves that are darker green
high carbon dioxide concentration
high temperatures
wet conditions
Which cell orgenelle produces ATP to give energy to the cell
Golgi body
Ribosomes
Chloroplast
Mitochondria
Where is chlorophyll located in the chloroplast?
the ribosomes
the grana
the thylakoid membrane
the stroma
Normal aerobic respiration yields 36 ATP molecules. How many ATP molecules are produced during anaerobic respiration?
38
4
2
10
Which pair of terms are forces that allow water to move through a plant?
Transpiration and translocation
Cohesion and adhesion
Active transport and osmosis
Xylem and Phloem
What part of the cell membrane is labelled Z?
phosopholipid
protein channel
glycoprotein
carbohydrate
What type of reaction builds up larger molecules from smaller ones?
metabolic
catabolic
anabolic
inhibition
What factors affect the shape of an enzyme 'active site'?
sunlight and rainfall
pH and temperature
pH and sunlight
temperature and sunlight
What does (enzyme) 'denatured' mean?
When the active site is working fine
when the active site has grown too big
when the active site has changed shape due to damage
when the active site has all been used up
Which of the following statements is NOT correct about enzymes?
most enzymes are protein molecules
every reaction in a cell requires a specific enzyme
enzymes speed up a chemical reaction
enzymes are named for the products formed
Each enzyme can speed up only one particular reaction. This specificity is due to the __________
shape of both the enzyme and the substrate
lowering of the energy of activation
pH of the surrounding medium
temperature of the surrounding medium
The amount of energy (e.g. heat) needed for a reaction to occur is called the __________
kinetic energy
potential energy
activation energy
synthetic energy
Which of the following statements about enzymes is NOT correct?
enzymes speed up a chemical reaction
enzymes are very specific in their action
enzymes lower the activation energy for a reaction to occur
an enzyme will change the outcome of a reaction
Which is the factor of the enzymatic activity in the following graph?
pH
Temperature
concentration of substrates
presence of enzyme
Why is thermoregulation important?
to maintain the optimal temperature for enzyme activity
to ensure that we lose water via sweating
to demonstrate we are cold by shivering
to allow blood to flow to our extremities
why is osmoregulation important?
so we don't get thirsty
so we produce enough urine
to maintain the optimum water level in our cells
to allow us to produce sweat
When is the hormone glucogon released from the pancreas?
when blood glucose concentration is too hight
when blood glucose concentration is too low
when glycogen concentration is too low
when insulin concentration is too high
How does an increase in the level of the hormone ADH affect the collecting duct in the kidney?
decreases permeability to reduce water level in blood
increases permeability to increase water level in blood
increases selective reabsorption of glucose
increases the volume of urea in the urine
How is urea formed?
excess glucose is broken down in the pancreas
excess lipids are broken down by the liver
excess amino acids are broken down in the liver
excess ADH is broken down by the kidney
In which part of the nephron is the glucose concentration of the filtrate reduced?
Distal convoluted tubule
Proximal convoluted tubule
Ascending limb of the Loop of Henle
Descending limb of the Loop of Henle
(ADH) Anti-diuretic hormone has an effect on which part of the nephron?
Promixmal convoluted tubule
Loop of Henle
Bowman's Capsule
Collecting duct
Where in the kidney does ultra-filtration take place?
Glomerulus
Loope of Henle
Proximal convoluted tuble
Collecting duct
The part of the kidney that is least permeable to water is the walls of the .....
ascending limb of Loop of Henle
Proximal convoluted tubule
Distal convoluted tubule
Descending limb of Loop of Henle
Which of the following is the function of the Loop of Henle?
Absorption from the collecting ducts
Active transport of water back into the blood vessels
Concentration of sodium ions in the medulla
Response to ADH by varying its permeability to water
Reabsorption of required salts occurs in which part of nephron
Proximal convoluted tubule
Descending limb of the Loop of Henle
Ascending limb of the Loop of Henle
Distal convoluted tubule
Which of the following is the function of the Loop of Henle?
Absorption from the collecting ducts
Active transport of water back into the blood vessels
Concentration of sodium ions in the medulla
Response to ADH by varying its permeability to water
