a\, t i.

:- :'r "

BANGL.{DESH INTE,R.N.{T'{ONAL TUTOR{AL

MID TERM EXAMINATTON

:

SESSIOI{: 2023 *2824

:

CLASS: VtrI

SUBJECT: BICILOGY
,1,
TOTAL MARKS: 100 TIME: 2 hours 30 minutes
1l'
l,r
'l

,i:
ta ii Name of Student:
,,i

:.i
Class: Section:

Invigilator's Signature Date:

ii

;
Itl

TEACHER'S USE ONLY

t,
:!
1:
u
h

e
EXAM CT TOTAL
,i
:l :'l
1i
D

$'
+
it
75 25 100
7:

'ii I

-i
'!

REMARK{S):
. r:'

,.

II

i.

'.

TEACH ER SIGNATURE
: 1
 I

1j-

1, How are the molecules nroving in the examples below? write 0s&t0sIs or bIrF[f$ION"
gym class ond forgot tn shower ond:you eon
n. Tha student sitting nexf to you iust 666s from
tell. * .--**
b.AfterIittinginthabathtubforhours,yourfin9ers$tnrttolooklikeprunes'@
c.Thegirlsittingtworowsaheadof.youputontoomuchperfumat.hismorning.@
d. One"wny to gei rid of slugs in your'garden is {:o sprinkla
solt on them, so they shrive-tr up'

ry
yrml Sn**iliing smells good, The neighbors ore eooking on the grill!"**-**-***
u.
eauses your swollem throqt eelEs to
f. 6orgling witl: silt wotei when you hove fl s.re throat
shrink and feel better. @@
ocross the cell membrones into the
g. Oxygen molecules move from the air sscs in the lungs
blood

(Total lbr Quostion 1*T lmxrirs)

2
 2' lJse erraws to inr.licats the. direetion of <Jiffirsion in e<rch ense. be,laur,

o00
A) B) o
o o oo OO o
o o
O \-,
o
o oo o 0o o
o
o o o
o
o
oo o o o o O

(2)

b)

For eoch of the situotions below use on orrow to indicote the net
moveme,nf pf-*sl&g into or
I

I
out of the cell. (Assumethot the sugor molecules con poss through the cell nrembrone
in eoch cosar)-

19,'o srrgar 39,'o sugar 19,'o sugar

5% sugar 19'o sugar 1% sugar

(3)

c) What is diftusion? (3)

(Total for Question 2 = E marks)

3
 ,l

3.

The diogrom shows o Plant cell.

A l:11
!.-

L',

#
I

(o) 6ive the notne of Pont /{.

6ivethe 'funciion of Pali' A.

.ji

t
2 marks
c
i

*
4
(b) 6ive the name of Port E.
jt
,

I Givsthefunction of Part E.

t4
J.;

?1
s
i:
q 2 morks

i in oninal cells'
(c) Give theletters of tri,o ports that ore present in plont cells but not

l mork

:
;

(d) How conyou tell thot the cell in the diagrom is from o leaf and not from o root?
,;:

i
I raork

(Total for Question 3 = 6 marks)

.:

4
 .. i,

::
i
.T
3
1
&

!
g
-i:
' :.:

i
,i
i;
li

i
,
:
a
i:

I
;

=11

:
ir
t
f
I

,;

:'

.:
 plant and an animal cell' ( 1 0)
b) DLaw a table anri use it to differentiate between a

;i
&

z
&
n

(Total for Question 4 = 15 marks)

6
t

5. 'i'iris question is about the di{tererrt types of r:ells

a) Fill in the missing u,orr:ls in the passage belorv:

Itlecrly oll cells c0ntoin o cell i'nembrdne, ..................... flnd -l-lv.re(rre

cytoplasrn. mony
-r-hey
".'.......".......:.,'.. types of cells. vary in theii'shopa nnrJ ,.................... crepending on their
funr:tions (jobs). fiaeh type of cefi is iveil ., . (suf ted) tu its functiJn, rn the
humon there are obout trven"iy diffe..renr tylre,s of cell,ench ho:; a eertain
.,....,,.....,.'.'todr:.Thismokesthebodyworkntuch
to do everything,

{1)
b)

Th"Jiagram below shows six cells.

(S.-,.:"..---

A B

c
ffi
0

Tfl*_
),1

't.
,;!

7
 -
L

(i) 6ive the letters of the two plant cells in the diagrams'

ond ...............
1m&rk

(ii) Which one of these plont cells contoins chloroplostsZ

6ive the letter.

l mork

(iii) Oivr. ihe. ftin,-rfion of chloroplr'rlls

1mnrk

c) Give examplcs of trvo specialiserl oe1ls along with their

firnction. (4)

8
 (

d) Arrioeba is a tnicellular organism tl.iat rnoves by charrging it:i strir.pe.

Diaw a labelt:ri diagram to show the sfructli-e of an anroeb;r. (3)

I
:

?,
e) State the meaning ofthe term 'tissues' and'organs'
n
Give an example of an organ. (3)

{i:
n

c
{
,

a,

(Total for Question 5 = 20 marks)

I
 6. Complete the following sentences about enzymes

Circle the type oi bioloqicr:i nr'llecula th'r:i is fitl tlil7"yiilo:

ecrbohydrate- Pr,r laitt

Lipid

Whof is o substrofe?

Whot is the octive site?

(s)
a

:':

b)
.j
Lobel the diogrom below ond odd descriptions
t0 tha step numhers:

E
1,
Step 1

c
Step?
i 2.

il
i

,1

:
Step 4

:i

lj
t:.

Step 3

;i
4,
z
:

(8)

10
 'i

c) i-lescribe vrhy only onc enzytrlc is s1;ecitic foi. orre sufistratr: (3)

,i

;1

1,

I
ri (Total for Question 6 = 16 marks)

I
,j
!
?:

;
c
,
E

-f.

.,'
'i;
4

5
2

,
.?

!
i

i.
i

i
'!

ii
ii

.'
:
;

:
Ll
 8. State ths meaning of tenn 'aetive ttansport'' (3)

Desffibe the prncess of active transport with the help

of a diagram. (4)

i,

t
a
a

*
I

ii

t
*
I

?"

t2
 :

i:

ti
;j

t
5

*
E

!
f
I

'4

(Total for Question 8 = 7 marks)

:: n,
51
!i

t,

i
:
;r

i
I

13
 j

t:

pH on an enzyme-controlled reaction' (4)

9a) DescLibe the effect of increased temperattre and increased

(3)
b) Why do enzymes becorne rlenatured at very high temperatures?

(Total for Question 9 = 7 marks)

14
 l.

10. I)cilnr: thr: ltrllowinp, tcnns:

a)'l'urgiciity (,))

b) Osrnosis (3)

,:

c) Dilute solution (l)

'i.

,l
,I v-

i
il
:,!

;!

ti

4
t!

(Total for Question l0 = 7 marks)

a
'i.

:
i

15
 \-1'

descriptor on the right. use each only once'

1i " Match each term on the left with the best

Dcgm.ipmr
a) Moves of Parfieles like oxYgen
Concentrotion into cells

Diffusion @ [>) Arrr,lunt o'f o *Lrbs'tetttce in ':

-
Equol omount of woter inside o cell
os outside- certcrin Pln,:e -

f,Aore woter outside o cell thnn inside- c) Mr:v'as tioteP in"h: nnrJ otil 'lf
Osmosis-- cells
.

More solute outsida a cell. thon inside ,- d) Allows some stlbstnRo{:s

, Seleetively parmeoble rnenrbrane @ through

. ("{'otirl for Q-trestioir ll = 7 marl*s)

!

tl
I .:
:'
i::

!'
t?
;l
E
Z

a
e

i!
I
a
t
ti
a
a:

:]

:l

16

L-,,1 tr 4 *o,