Worksheetsbio SPM
Total questions: 122
Worksheet time: 1hrs 22mins
What is the function of a chloroplast?
makes proteins for animal cells
allows materials in and out of the cell
provides structure and support
absorbs sunlight for photosynthesis
Identify the phase of mitosis shown
prophase
metaphase
anaphase
telophase
What element is generally absent in carbohydrates?
Carbon
Hydrogen
Oxygen
Nitrogen
Why do the villi have long, finger like projections?
to reduce the thickness of barrier for faster absorption
to maintain concentration gradient across the intestinal wall
to increase the thickness of barrier for faster absorption
to increase the surface area to volume ratio for faster absorption
Fatty acids and glycerol are absorbed by which process?
active transport only
active transport and diffusion
diffusion only
diffusion and osmosis
Which event is not true in peristaltic action down the oespohagus?
in front of the bolus of food, circular muscle will contract, whereas longitudinal muscle will relax
in front of the bolus of food, both circular and longitudinal muscle will contract
behind the bolus of food, circular muscle will contract, whereas longitudinal muscle will relax
behind the bolus of food, longitudinal muscle will contract, whereas circular muscle will relax
why does your stomach secrete hydrochloric acid?
to deactivate proteases in the stomach
to allow bacteria in food to survive
to denature enzyme salivary amylase
to provide optimal pH for the action of enzyme salivary amylase
a person has been diagnosed with a disease, in which the villi in his small intestine is much shorter than normal. Which process is affected and why?
digestion process; because his small intestines cannot be involved in physical digestion
digestion process; because he will have no enzymes secreted into his small intestine
absorption process; because he has reduced surface area to volume ratio, thus slower rate of absorption than normal
absorption process; because he has thicker membrane, thus slower rate of absorption than normal
Cells do cell respiration in order to make
water
glucose
energy (ATP)
oxygen
What are the products of cell respiration?
water, light, and sugar
water, carbon dioxide, ATP
oxygen, water, sugar
organism referred to?
What is osmosis ?
Involve movement of water molecules only
Involve movement of any molecule
Involve movement of large molecule
Involve movement of ion molecule
What is the definition of diffusion ?
The movement of a substance from an area of high concentration to an area of low concentration.
The movement of a substance from an area of low concentration to an area of high concentration
The movement of a substance from an area of high concentration to an area of medium concentration
The movement of a substance from an area of low concentration to an area of medium concentration
In osmosis, between solvent and solute particles, which particle is move and which particle does not move ?
Only solvent particles move. Solute particles do not move
Only solute particles move. Solvent particles do not move
No particles is move
What is the similarities of diffusion and osmosis ?
The movement is through a semipermeable membrane
Solvent and solute particles move to equalize concentration
Equalizes the concentration of two solutions
Not equalizes the concentration of two solutions
Sofy pour blue ink into a glass of water. Suddenly, after a few minutes, the water in a glass turn to blue color. This concept refer to ?
Osmosis
Diffusion
Active Transport
A flat piece of tissue that prevents food particles from entering into the larynx and trachea is_____
Epiglottis
Pharynx
Nose
Cilia
Exchange of gases in Man takes place via the ____
Trachea
Alveoli
Skin
Larynx
Gill chambers in the fish consists of the following except____
Gill filament
Gill raker
Gill arch
Operculum
what body system exchanges O2 for CO2
respiration
excretion
digestion
nervous
What is cellular respiration?
the use of oxygen and glucose to release energy
the breakdown of glucose to release nutrients
the breakdown of glucose to release oxygen
Which of the following statements are true about the properties of water?
I. Water molecule able to dissolve a lot of ionic compounds
II. Water helps to maintain our body temperature by absorbing the energy
III. Water molecules have repelled each other through a cohesive force
IV. Water is a polar molecule
I, II and III
I, II and IV
II, III and IV
All the above
The carbohydrate that stored in animal cell is called __________.
Glycogen
Starch
Glucose
Cellulose
Which of these processes represents the sequences for the complete hydrolysis of protein?
Protein – Dipeptide – Amino acid – Polypeptide
Protein – Polypeptide – Dipeptide – Amino acid
Protein – Dipeptide – Polypeptide – Amino acid
Protein – Polypeptide – Amino acid – Dipeptide
In which process are Gametes produced?
Mitosis
Meiosis
How many daughter cells is made at the end of Meiosis?
4
3
2
1
What is happening during crossing over in Meiosis?
chromatids are replicating
chromatids are exchanging genetic information
chromatids are changing color
chromatids are being deleted
What phase is this?
Prophase I
Metaphase II
Anaphase I
Telophase II
What phase is this?
Metaphase II
Prophase I
Telophase I
Anaphase I
The diagram shows the mechanism of an enzyme.
What is X?
Enzyme
Product
Substrate
Enzyme-substrate complex
The diagram shows the action of an enzyme on a substrate.
Which of the following is represented by P?
Product
Substrate
Enzyme-substrate complex
Stable intermediate substance
Diagram shows a molecule of an enzyme.
Which of the followings show the substrate for this enzyme?
A housewife accidentally cut her finger and her blood stained her shirt.
Her husband bought a box of washing powder with enzyme.
Which of the followings is the most suitable enzyme and water temperature to remove the blood stain?
Lipase, 37oC water
Protease, 37oC water
Amylase, 37oC water
Protease, 18oC water
Diagram shows the effect of substrate concentration on the rate of enzyme reaction.
What causes the rate of reaction at point X to Y?
Free active sites
Maximum rate of reaction
Limited enzyme concentration
Decrease in pH of the substrate
A daughter need to prepare a meat dish in less than an hour after come back from work.
Which of the followings is the best step to treat the meat before cooking?
Marinate with lipase
Marinate with rennin
Marinate with protease
Marinate with amylase
Diagram below shows an enzyme reaction.
Which of the followings represent X, Y and Z?
X:enzyme, Y:product, Z:substrate
X:product, Y:enzyme, Z:substrate
X:substrate, Y:enzyme, Z:product
X:substrate, Y:product, Z:enzyme
The equation shows the hydrolysis of sucrose.
What is represented by P, Q and R?
P:sucrase, Q:glucose, R:glucose
P:amylase, Q:maltose, R:glucose
P:sucrase, Q:fructose, R:glucose
P:sucrase, Q:galactose, R:glucose
Diagram shows the experiment to study the effect of pH on the reaction of an enzyme.
Which test tubes remain cloudy after 60 minutes?
P and Q
R and S
Q and S
P and R
Diagram shows a petri dish with agar jelly containing starch.
Four holes were cut in the jelly and each hole was treated differently.
After 30 minutes, iodine solution was poured over the jelly.
Which holes, A, B, C or D would be surrounded by the largest yellowish brown region?
A
B
C
D
Which is the most effective washing for a t-shirt with grease stain?
Detergent containing lipase with 37oC water
Detergent containing protease with 37oC water
Detergent containing amylase with 37oC water
Detergent containing pectinase with 37oC water
What is the product from the catalysis of cellulose by cellulase?
glucose
galactose
amino acid
glucose and galactose
Diagram shows the action of enzyme to form a disaccharide.
What is S and T?
S:galactose, T:maltose
S:glucose, T:sucrose
S:galactose, T:sucrose
S:glucose, T:maltose
Lipase solution was added to milk. After 30 minutes the pH of the milk decreases.
What is the substrate and product in this reaction?
Substrate:fat, Product:amino acid
Substrate:protein, Product:amino acid
Substrate:fat, Product:fatty acid
Substrate:protein, Product:fatty acid
Diagram shows the action of lactase on substrate P to form glucose and R.
Name R.
(a)
Based the diagram, what are the two correct characteristics of lactase?
structure of enzyme is unchanged
has active site for specific reaction
needs co-factor to function
reversible reaction
Based on the Lock and Key hypothesis, what is represented by P?
(a)
Where do substrate bind to enzymes?
(a)
Based on the diagram, what will be formed when P binds to lactase?
(a)
The graph shows the action of maltase on X to produce Y.
Name X.
(a)
The graph shows the action of maltase on X to produce Y.
Why does X and Y become constant at certain point?
active site of enzymes are saturated with X
pH is unsuitable for the reaction
temperature increases above optimal level
maltase denatures
Name the process occured to enzymes when the optimal temperature is exceeded.
(a)
What is the criteria of the active site of enzymes that ensure them to function at narrow pH?
different charge between active site and substrate
same charge of active site and substrate
enzyme denatures during extreme pH change
all enzyme function at the same range of pH
The graph shows the action of maltase on X to produce Y.
Why does the concentration of X decreases?
concentration of substrate is constant
concentration of maltase decreases
substrate catalysed by maltase
more active site available
The graph shows the action of maltase on X to produce Y.
Why does the concentration of Y increases?
substrate catalysed by maltase into products
decrease in X increases Y
active sites are saturated
more Y is added
The tiny openings located on the underside of the leaf are called___.
stomata
stroma
lumen
Stacks of green disc-shaped sacs.
grana
thylakoid
chloroplast
Green sacks where light reactions take place.
thylakoids
grana
chloroplast
The primary pigment of photosynthesis, located in the thylakoids; releases electrons
chlorophyll
carotenoids
xyanthrophyll
chloroplast
A process that involves capturing the energy from sunlight.
light-dependent phase
light-independent phase
Calvin Cycle
Dark phase
Which molecule stores and transfers energy within cells?
ATP
ADP
NADP+
NADPH
A process that releases energy by breaking down glucose and other food molecules in the presence of O2
Cellular Respiration
Photosystem I
Photosystem II
none of these
Photolysis is a process that
breaks water molecules apart into hydrogen ions, elections, and oxygen
adds carbon dioxide to a 5-carbon sugar molecule
removes a phosphate group from ATP
adds a phosphate group to ATP
Where do the light-independent reactions take place?
thylakoid membrane
cellular membrane
stroma
lumen
The product of photosynthesis that is most important to the plants.
oxygen
water
glucose
carbon dioxide
Carbon from CO2 binds with a 5-carbon sugar in which process?
carbon fixation
carbon integration
carbon reduction
carbon attachment
Plants in the desert have long roots so that they...
take up more space
help avoid deterioration of the soil
provide food for animals underground
absorb more water.
Why do leaves and stems have a waxy coating on them?
So animals don't eat them.
Helps to reduce water loss.
To make them look beautiful.
The leaves of these trees are (a) shaped so that snow slides off easily.
An adaptation that helps a cactus live in the desert is its
wide, flat leaves to catch water
bright green color
thin, spiny needles
tall stems
What is it called when a plant or animal has a trait that helps it survive in a specific environment?
instinct
mimicry
camouflage
adaptation
Figure 1 shows the structure of enzyme N change to structure R when being heat above 60oC through the process P. Name P?
hydrolysis
deamination
denaturation
condensation
Figure shows an illustration to describe the ‘lock and key’ hypothesis in the enzyme reaction.Which of the followings to represent P, Q and R
P-Substrate, Q- Product, R-Enzyme
P-Enzyme, Q- Substrate, R-Product
P-Substrate, Q- Enzyme, R-Product
P-Product, Q- Enzyme, R-Substrate
Diagram shows the synthesis of enzyme in a cell.
Energy cannot be generated
Enzyme cannot be synthesized
Protein synthesized cannot be modified
Protein synthesized cannot be transported
Enzymes are great commercial and industrial importance.
Choose the correct enzyme and its application
I and II only
II and III only
I, II and III only
I, II, III and IV
Figure shows structure protein A and structure protein B.
pH and temperature
light intensity and humidity
pH and enzyme concentration
salt concentration and temperature
Which of the following graphs represents the effect of pH on the rate of reaction by trypsin?
Graph in figure shows the effects of temperature on the rate of an enzyme- catalysed-reaction. Which of the following statement is correct?
When the temperatures is low, the enzyme-catalyzed reaction is high.
When the temperatures is high, the rate of reaction is not accelerated.
When the temperatures is optimum, the enzyme catalyses the reaction at the maximum rate.
When the temperatures is beyond the optimum, the enzyme catalyses the reaction is increase
Table shows the result obtained from the experiment to investigate the temperature on the activity of amylase.What inference can be made from the above observations?
In test tube Q, rate of reaction is decreasing.
In test tube R, rate of reaction is optimum
In test tube S, rate of reaction is increasing
In test tube T, rate of reaction is accelerated
Figure shows the relationship between the rate of reaction and substrate concentration.
When the concentration of substrate increase more product is produced because more subtrate molecules are available to bind the active sites of the enzymes
The rate of reaction increases because there are less chances of collisions between the substrate molecules and the enzymes molecules
When the substrate concentration increases, the speed of reaction also increases because less substrate binds the active of the enzymes
The rate of reaction is directly proportional the substrate concentrate continuously without limiting factor.
Which enzyme works best at pH 1.5 - 2.5?
Lipase
Pepsin
Trypsin
Amylase
What is the benefit of structure X?
protects the axon
insulate the nerve impulses
speed up the transmission of electrical impulse
ensure the one direction of electrical impulse
What is the role of the neurotransmitter in the nervous system
speeds up the transmission of nerve impulses
receives information from other neurones
transmits impulses from the cell body to neurones
facilitates the transmission of nerve impulses in one direction
X --> Central Nervous System --> Y
What are represented by X and Y?
X - afferent pathway
Y - efferent pathway
X - efferent pathway
Y - afferent pathway
X - effector
Y - receptor
X - receptor
Y - effector
