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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

5 · The Mitotic Cell Cycle

0/21

6 · Nucleic Acids and Protein Synthesis

0/22

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

9 · Gas Exchange

0/13

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/34

17-18 · Selection, Evolution, Classification and Conservation

0/69

19 · Genetic Technology

0/44
Quiz

14.1 Homeostasis in Mammals – Check yourself

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Homeostasis in Mammals AS Biology check yourself quiz: free practice for AS Biology. Work through this Homeostasis in Mammals AS Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 14.1 Homeostasis in Mammals — 9700 Notes lesson. More practice: AS Biology — all units. Syllabus: Cambridge AS & A Level Biology 9700 syllabus.

  • Questions count: 17
  • Passing grade: B
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1.

Homeostasis is

the removal of waste
the control of growth
the maintenance of a relatively constant internal environment
the response to light
2.

In negative feedback, a change in a factor

is amplified
brings about a response that returns the factor towards its set point
is ignored
stops all responses
3.

Urea is formed in the liver by

deamination of excess amino acids followed by the urea cycle
the breakdown of glycogen
filtration of blood
the breakdown of fats
4.

Ultrafiltration takes place in the

loop of Henle
collecting duct
distal convoluted tubule
renal (Bowman’s) capsule
5.

Most selective reabsorption of glucose occurs in the

proximal convoluted tubule
loop of Henle
collecting duct
glomerulus
6.

ADH increases water reabsorption by

increasing blood pressure in the glomerulus
closing the collecting duct
causing aquaporins to be inserted into the cell surface membranes of collecting duct cells
pumping water actively
7.

Osmoreceptors that detect the water potential of the blood are found in the

pituitary gland
hypothalamus
kidney
liver
8.

When blood glucose concentration rises, the pancreas secretes

glucagon from α cells
insulin from α cells
insulin from β cells
adrenaline
9.

Glucagon acts on liver cells by

entering the cell and binding to DNA
opening glucose channels directly
breaking down insulin
binding to a receptor, activating a G-protein and adenylyl cyclase to make cyclic AMP
10.

Test strips for urine glucose contain

glucose oxidase and peroxidase
amylase
insulin
Benedict’s reagent
11.
Insulin lowers blood glucose by
stopping digestion
causing cells to take up glucose and the liver to store it as glycogen
breaking down glycogen
increasing glucose release from the liver
12.
Kidney dialysis removes urea by:
Active transport into blood
Diffusion across a partially permeable membrane
Osmosis of glucose
Filtration of cells
13.
According to the comparison table in this lesson, what is the Hormone / nerve of Blood glucose (high)?
According to the comparison table in this lesson, what is the Hormone / nerve of Blood glucose (high)?
Homeostatic control
Glucagon
Insulin
ADH
Nerves
14.
According to the comparison table in this lesson, what is the Hormone / nerve of Blood glucose (low)?
According to the comparison table in this lesson, what is the Hormone / nerve of Blood glucose (low)?
Homeostatic control
ADH
Insulin
Nerves
Glucagon
15.
Complete the statement: Insulin ______ blood glucose.
Complete the statement: Insulin ______ blood glucose.
Excretion
Insulin
lowers
Glucagon
16.
How will the two drugs most likely differ in their effects on a diabetic patient’s blood glucose level?
SAT Biology - Question 157
A
B
C
D
E
17.
Which hormone lowers blood glucose?
A. glucagon
D. thyroxine
C. adrenaline
B. insulin
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Part of 14-15 · Homeostasis and Control — see every lesson and quiz in this unit.
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