WorksheetsY8 For after test
Total questions: 134
Worksheet time: 2hrs 35mins
How many blood vessel types do humans have?
4
5
3
2
Human blood vessels are
artries, capillaries, and atria
ventricles, atria and pulmonary veins
capillaries, artries, and veins
veins, artries, and aorta
The thickest and strongest blood vessel is the
vein
artery
capillary
both veins and capillaries
The blood vessel that has the largest diameter is
vein
artery
capillary
The blood vessel that has valves at intervals...
capillary
artery
vein
none of the above
Valves in veins
support them
protect them
prevent the backward movement inside them
provide them elesticity
which of the blood vessels do you think have greatest blood pressure
veins
capillaries
atria
arteries
These are one cell thick
arteries
capillaries
veins
Heart Rate
Which of the following is NOT a type of blood vessel?
Artery
Capillary
Vein
Ventricle
Which blood vessels take blood TO the heart?
Veins
Arteries
Capillaries
Which blood vessels take blood AWAY from the heart?
Veins
Arteries
Capillaries
Which is the smallest of the 3 blood vessels?
Veins
Arteries
Capillaries
What type of blood do the arteries usually carry?
Oxygenated Blood
Deoxygenated Blood
Which blood vessel has valves to prevent the back-flow of blood?
Veins
Arteries
Capillaries
Human blood vessels are
artries, capillaries, and atria
ventricles, atria and pulmonary veins
capillaries, artries, and veins
veins, artries, and aorta
The thickest and strongest blood vessel is the
vein
artery
capillary
both veins and capillaries
The blood vessel that has the largest diameter is
vein
artery
capillary
The blood vessel that has valves at intervals...
capillary
artery
vein
none of the above
Valves in veins
support them
protect them
prevent the backward movement inside them
provide them elesticity
These are one cell thick
arteries
capillaries
veins
What is the function of coronary artery?
Transports oxygenated blood from aorta to heart muscles
Transports oxygenated blood from aorta to liver
Transports oxygenated blood from aorta to kidneys
If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)
FF
Ff
ff
The combination of genes a person has, represented by letters, is their...
Genotype
Phenotype
Chromosome
Punnett Square
What belongs in the last box?
RR
Rr
rr
ff
In the punnett square below, what belongs in the missing square
Look at the punnett square shown. What allele pair would replace the "?"
WW
Ww
ww
What belongs in Box 4?
Y
YY
Yy
yy
Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?
100%
75%
50%
25%
0%
What is the probability & phenotype of the offspring? (A-Brown hair; a-blond hair)
50% Brown Hair and 50% Blond Hair
25 % Brown Hair and 75% Blond Hair
75 % Brown Hair and 25% Blond Hair
0% Brown Hair and 100% Blond Hair
Fill in the Yellow Box
Bb
BB
bb
Which of the following allele pairs is heterozygous?
RR
ss
In the punnett square, what is the probability for white fur?
Which of the following correctly states the genotype probabilities for the offspring of the parents shown in this punnett square?
50% heterozygous 50% homozygous dominant
50% heterozygous 50% homozygous recessive
50% heterozygous 25% homozygous recessive 25% homozygous dominant
100% heterozygous
Which of the following correctly states the genotype probabilities for the offspring of the parents shown in this punnett square?
50% heterozygous 50% homozygous dominant
50% heterozygous 50% homozygous recessive
50% heterozygous 25% homozygous recessive 25% homozygous dominant
100% heterozygous
Spring constant is measured in
N
N/m
m
If the original length of a spring is 20m and its extended length is 30m. What is the extension?
20m
12m
75m
45m
10m
___________ is the unit of force
Km
cm
m
N/cm
N
At point P, _______.
the force applied to the spring is equal to its elongation
Hooke's Law ceases to be valid
the spring is can be stretched but still springs back into shape reversibly
the spring constant increases
Enzymes are usually made of
Lipids
Protein
Carbohydrates
Nucleic Acids
Enzymes are responsible for-
Speeding up reactions
Giving the body energy
Slowing down reactions
Letter D...
active site
enzyme
substrate
products
Letter B...
active site
enzyme
substrate
products
Letter c...
active site
enzyme
substrate
products
Each enzyme only has 1 substrate that will fit its active site. What is this called?
reusablility
denaturation
specificity
fragility
What is a substance called if it speeds up a chemical reaction?
reusable
catalyst
specific
fragile
An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
true
false
What happens when enzymes are heated to a high temperature?
The enzymes die.
The shape of the enzymes are altered- 'denatured'
The enzymes' amino acid sequence changes.
The enzymes remain the same
Label the parts of the enzyme model
Click on the temperature that this enzyme is having optimum activity.
What is the purpose of an enzyme?
control how many reactions occur
raise activation energy
give permission for the reaction
speed up chemical reactions
Enzymes are (a) that (b) chemical reactions by (c) the amount of activation energy required to start the reaction.
Match the following Macromolecules to its structure
Carbohydrate
Lipid
Nucleic Acids
Protein
Enzymes act on many different substrates
True
False
Enzyme can be used again and again
True
False
Substances with a pH of 7 are
Acidic
Basic
Neutral
Saturated
Which food group is needed for insulation and energy?
Carbohydrates
Fats
Proteins
Vitamins and Minerals
Which of the following is not a food group?
Carbohydrate
Dairy
Fat
Protein
Which of the following foods is a good source of protein?
Bread
Fruit
Meat and fish
Crisps
Which food group is needed for growth and repair?
Carbohydrates
Fats
Vitamins and minerals
Protein
Which food group is needed to ensure chemical reactions can take place in cells?
Carbohydrates
Fats
Vitamins and minerals
Water
Which mineral is needed to ensure you have strong bones and teeth?
Calcium
Iron
Magnesium
Sodium
Which food would you eat to prevent scurvy?
Banana
Orange
Potato
Carrot
Which food group provides immediate energy for exercise?
Carbohydrate
Fat
Protein
Fibre
Which food group keeps your digestive system healthy, preventing constipation?
Carbohydrates
Fats
Fibre
Protein
Which of following foods is a good source of fibre?
Cereal
Burger
Pasta
Yoghurt
