Transcript Int 2 Unit 3 Mid-unit revision quiz

Int 2
Unit 3
Mid-unit revision quiz
Nutrition – 15 questions
Osmoregulation – 15 questions
Question 1
 Name
the food group that
consists of starch and sugars.
Question 2
 What
are the building blocks of
proteins?
Question 3
 What
are the two building blocks
of fats?
Question 4
A
biscuit contains 2.5g of fat, 9.5
grams of sugar and 28g of starch.
 What
% of the biscuit is fat?
Question 5
A
cake contains 2.5g of fat, 12.5
grams of sugar and 25g of starch.
 What
is the simple whole number
ration of fat to sugar to starch?
Question 6
a) Name two places in the body where
amylase is produced. (Be specific!)
b) What is the substrate of amylase?
Question 7
 What
name is given to the
muscular movements which push
food down the oesophagus?
Question 8
a)
Name three substances
produced by the gastric glands in
the wall of the stomach.
b)
Which of these three substances
activates the enzyme?
Question 9
 What
is the final end product of
digestion of starch?
Question 10
a)
In which organ is bile produced?
b)
In which organ is it stored?
c)
What is its function in digestion?
Question 11
 Why
must food be digested
before it is absorbed into the
blood?
Question 12
 Give
three features of a villus
which make it well suited for
absorption of digested food.
Question 13
 What
is the main function of the
large intestine?
Question 14
 What
happens to excess glucose
not needed immediately for
respiration?
Question 15
a)
What happens to excess amino
acids not needed for growth and
repair?
b)
What name is given to this process?
c)
Where does this occur?
Question 16
 Name
the blood vessel which
takes blood into the kidney.
Question 17
 Name
the tube that carries urine
to the bladder.
Question 18
 Name
the two main processes
which occur in the kidney
nephron.
Question 19

Which part of a nephron
a)
collects filtrate from the glomerulus
b)
is where water and salts are
reabsorbed back into the blood
Question 20
a)
b)
Name a substance which is
filtered out of the blood but which
is all reabsorbed again.
Name a substance which is too
large to be filtered out.
Question 21
 Name
the three main substances
normally found in urine.
Question 22
A
sample of filtrate contains 3
grams of salt. After reabsorption
of some salts, this drops to 1.8
grams.
What is the % decrease in salt?
Question 23
 Where
exactly in the body are
the osmoreceptors found?
Question 24

a)
b)
c)
d)
What effect does a shortage of water
in the blood have on
the production of ADH?
the permeability of the kidney
tubules?
the volume of urine produced?
the concentration of urine produced?
Question 25
a)
b)
What osmotic problem is
encountered by fish living in
fresh water?
Describe the urine produced by
these fish.
Question 26
 Why
do marine fish drink sea
water?
Question 27
 What
word is used to describe
saltwater because it has a lower
water concentration than the fish?
Question 28
 Compare
the glomeruli of
freshwater and saltwater fish.
Question 29
 State
three ways the body gains
water.
Question 30
 State
four ways the body loses
water every day.
Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Carbohydrates
Amino acids
Fatty acids and glycerol
(2)
6.25%
1 : 5 : 10
a) salivary glands and pancreas
b) starch
(2)
Peristalsis
a) pepsin, acid, mucus
b) acid
(4)
Glucose (not maltose)
a) liver
b) gall bladder
c) emulsifies fats
(3)
Large insoluble molecules must be broken down to small soluble ones
Large surface area, thin lining, good blood supply/lacteal present (3)
Reabsorb water
Stored as glycogen
a) broken down to carbohydrate b) deamination c) liver
(3)
Answers
16. renal artery
17. Ureter
18. Filtration and reabsorption
19. a) Bowman’s capsule
b) tubule
20.
a) glucose
b) protein / blood cells
21.
water, salts, urea
22.
40%
23.
Hypothalamus
24.
a) increases b) increases c) decreases d) increases
25.
a) gain water by osmosis b) high volume of dilute urine
26.
To replace water lost by osmosis
27.
Hypertonic
28.
Freshwater – large / many
saltwater – few / small
29.
Food, drink, chemical reactions
30.
Sweat, urine, faeces, breathing
TOTAL 56
(2)
(2)
(2)
(3)
(4)
(2)
(2)
(3)
(4)