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Questions and Answers
The enzyme worked quickest at _______ °C.
The enzyme worked quickest at _______ °C.
50
Explain why the iodine solution remained blue-black at 80 °C.
Explain why the iodine solution remained blue-black at 80 °C.
high temperature
A high cholesterol concentration in the blood can lead to blockages inside _______.
A high cholesterol concentration in the blood can lead to blockages inside _______.
arteries
The coronary arteries supply blood to the _______ muscle.
The coronary arteries supply blood to the _______ muscle.
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Doctors can measure the concentration of cholesterol in the _______.
Doctors can measure the concentration of cholesterol in the _______.
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Table 3 shows four different blood cholesterol _______.
Table 3 shows four different blood cholesterol _______.
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Viruses reproduce inside ______, damaging them.
Viruses reproduce inside ______, damaging them.
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A vaccine can protect humans from a viral ______.
A vaccine can protect humans from a viral ______.
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What does the vaccine contain? A weakened form of a ______.
What does the vaccine contain? A weakened form of a ______.
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Which graph shows how the concentration of antibodies in a person’s blood changes after the first and second ______?
Which graph shows how the concentration of antibodies in a person’s blood changes after the first and second ______?
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TMV affects the rate of ______ in plants.
TMV affects the rate of ______ in plants.
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Which part of a plant shows discolouration caused by TMV? ______.
Which part of a plant shows discolouration caused by TMV? ______.
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A cactus is a plant that lives in a ______ environment.
A cactus is a plant that lives in a ______ environment.
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Some desert plants only grow leaves after it has ______.
Some desert plants only grow leaves after it has ______.
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How could the leaves falling off the plant be an advantage to a plant that lives in a ______ environment?
How could the leaves falling off the plant be an advantage to a plant that lives in a ______ environment?
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Complete Figure 5: You should label the y-axis, add the correct scale to the y-axis, plot the data from Table 1, label each ______.
Complete Figure 5: You should label the y-axis, add the correct scale to the y-axis, plot the data from Table 1, label each ______.
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What conclusion can be made from the data in Table 1? A high level of TMV infection reduces ______ in a plant.
What conclusion can be made from the data in Table 1? A high level of TMV infection reduces ______ in a plant.
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A plant may produce poisons that make animals unwell. What is this type of defence mechanism? Tick () one box. Chemical Mechanical ______.
A plant may produce poisons that make animals unwell. What is this type of defence mechanism? Tick () one box. Chemical Mechanical ______.
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Carbohydrates are needed as part of a balanced diet. Which formula shows glucose?
Carbohydrates are needed as part of a balanced diet. Which formula shows glucose?
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Which type of enzyme breaks down starch?
Which type of enzyme breaks down starch?
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Name one substance transported through the xylem in the stem of the cactus.
Name one substance transported through the xylem in the stem of the cactus.
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Name the tissue that transports dissolved sugars through the stem of the cactus.
Name the tissue that transports dissolved sugars through the stem of the cactus.
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What name is given to a group of tissues working together?
What name is given to a group of tissues working together?
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What is the advantage to the cactus of having a green stem?
What is the advantage to the cactus of having a green stem?
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Immediately add two drops of ______ solution to the amylase-starch solution mixture on the spotting tile.
Immediately add two drops of ______ solution to the amylase-starch solution mixture on the spotting tile.
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Record the ______ of the iodine solution added to the amylase-starch solution mixture.
Record the ______ of the iodine solution added to the amylase-starch solution mixture.
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Repeat steps 3 to 5 every ______ until the iodine solution is yellow-brown.
Repeat steps 3 to 5 every ______ until the iodine solution is yellow-brown.
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Why were the starch solution and the amylase solution left for five ______ before mixing them together?
Why were the starch solution and the amylase solution left for five ______ before mixing them together?
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How many ______ did it take until the iodine solution and amylase-starch solution mixture was yellow-brown?
How many ______ did it take until the iodine solution and amylase-starch solution mixture was yellow-brown?
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How could a more accurate ______ be obtained?
How could a more accurate ______ be obtained?
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