Podcast
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.
Doctors can measure the concentration of cholesterol in the _______.
Doctors can measure the concentration of cholesterol in the _______.
Table 3 shows four different blood cholesterol _______.
Table 3 shows four different blood cholesterol _______.
Viruses reproduce inside ______, damaging them.
Viruses reproduce inside ______, damaging them.
A vaccine can protect humans from a viral ______.
A vaccine can protect humans from a viral ______.
What does the vaccine contain? A weakened form of a ______.
What does the vaccine contain? A weakened form of a ______.
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 ______?
TMV affects the rate of ______ in plants.
TMV affects the rate of ______ in plants.
Which part of a plant shows discolouration caused by TMV? ______.
Which part of a plant shows discolouration caused by TMV? ______.
A cactus is a plant that lives in a ______ environment.
A cactus is a plant that lives in a ______ environment.
Some desert plants only grow leaves after it has ______.
Some desert plants only grow leaves after it has ______.
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?
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 ______.
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.
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 ______.
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?
Which type of enzyme breaks down starch?
Which type of enzyme breaks down starch?
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.
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.
What name is given to a group of tissues working together?
What name is given to a group of tissues working together?
What is the advantage to the cactus of having a green stem?
What is the advantage to the cactus of having a green stem?
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.
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.
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.
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?
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?
How could a more accurate ______ be obtained?
How could a more accurate ______ be obtained?
