Random MCQ2

8/9/2019 Random MCQ2

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What is not an example of a stimulus%

A chemicals seeing

! sound

" touch

Which is an example of biological

control of houseflies%

A cover food to prevent access to adult

flies removal of faeces and decaying plants

from around buildings

! spraying walls with an insecticidewhich kills adult flies on contact

" spraying walls with bacterial spores

which infect and kill adult flies

A certain gene for eye colour occurs as

two alleles. &he brown eyes allele, 6, is

dominant to the blue eyes allele, e. &wo

parents had six children. &hree of thechildren had brown eyes and three had

blue eyes. What represents the genetic

make7up of the parents%

A 66 8 66

66 8 6e

! 66 8 ee

" 6e 8 ee

Which organisms are non7cellular%

A bacteria fungi

! proto2oa

" viruses

Which pathogen must spend part of its

life cycle in two different hosts%

A human immuno7deficiency virus

#ycobacterium tuberculosis! 5lasmodium

" ringworm

Which hormone change will cause thelining of the uterus to thicken before

ovulation%

A a decrease in oestrogen secretion

a decrease in progesterone secretion! an increase in oestrogen secretion

" an increase in progesterone secretion

What is an advantage of passiveimmunity%

A It gives immediate protection.

It lasts longer than active immunity.! It makes antibodies more slowly.





A finger that touches a hot ob3ect is

9uickly taken away from the source ofheat.

What is the role of relay neurones in this

response%

a. &o carry nerve impulses within the

spinal cord

b. &o generate impulses in the receptorsof the finger

c. &o link the sense organs to the sensory

neurons

d. &o pass nerve impulses out to theneurones

ow does cartilage differ from bone%

a. It contains protein b. It is alive

c. It is flexible

d. It is made of calcium salts

Which of the following substances

reduces blood sugar in the human body%

a. Insulin b. :lycogen

c. :lucagon

d. Adrenaline

&he aveoli of the lungs of a mammal

a. 'eep the lungs filled to capacity

continuously

b. 1erve to increase the absorptivesurface of the lungs

c. Are filled with oxygen to keep the

lungs in an expanded stated. 5revent the lungs from collapsing

What is the end product of digestion of

protein%

a. Amino acids

b. atty acidsc. :lucosed. 5olypeptides

A new strain of the influen2a virus, such

as swine flu, often spreads very rapidlyat first.

What is the best explanation for this%

A It is resistant to existing drugs.

It is spread by a new vector.

! It takes time to develop a vaccine

against the new strain." It will be more virulent than existing

strains

&he eye is sometimes referred to as aneffector organ because

a. &he pupil constricts in the presence of

bright light

b. &he rods and cones are stimulated by

lightc. Images which fall on the retina are

sent to the braind. eurons from the eye lead to the

central nervous system



What is an advantage of feeding a baby

with bottled milk rather than breast

milk%

a. reast milk contains antibodies

b. It is easier to keep the milk free of pathogensc. &he baby+s intake of food can be

measured

d. &he milk is always at the righttemperature

&he function of the lymphatic system in

the human body is to

a. ring nutrients back to the body b. !arry the tissue fluid out of the body

c. 4emove excess fluid and foreign

material from the tissue spaced. 4emove poisonous substances and

other waste materials form the blood

A mother who smokes cigarettes and

drinks alcohol is also infected with the

bacterium causing her to suffer fromtuberculosis.

As a result of this, which substances may

cross her placenta to harm her fetus%

A alcohol only

alcohol and nicotine only

! nicotine and the tuberculosis bacteriaonly

" alcohol, nicotine and the tuberculosis

bacteria

What may both drinking alcohol andin3ecting heroin cause%

A cirrhosis and constipation

cirrhosis and slow speed of nerveimpulses

! constipation only

" slow speed of nerve impulses only

Which is a characteristic feature of all

living things%

A breathing

egestion

! sensitivity

" taking in food

In which of the followin9 situations is

the secretion of insulin increased%

A.after eatin9 a 3am sandwich

.at the start of pregnancy

!.3ust before the intercourse".at the biginning of puberty



Imagine you have been out on d beachlooking at some friends in the sea. ;ou

walk into the shade of a palm tree and

behind to read a book. Wat changeswould take place in your eyes%

A. ;our pupils wold constrict and your

lenses would become flatter and less

convex.

. ;our pupils would constrict and yourlenses would become rounder and more

convex.

!. ;our pupils would dilate and yourlenses would become flatter and less

convex.

". ;our pupils would dilate and your

lenses would become rounder and

convex.

&he aveoli of the lungs of a mammal

a. 'eep the lungs filled to capacitycontinuously

b. 1erve to increase the absorptive

surface of the lungsc. Are filled with oxygen to keep the

lungs in an expanded state

d. 5revent the lungs from collapsing

5arts of neurone are<

A) dendrites and impulses

) impulses and synapse!) Axon and blindspot

") dendrites and synapse

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