Spectrum biology

Choose the correct set of option.

(a)A–Cross bridge, B–Cross bridge formation, C–Breakage of

cross bridge, D–Sliding, E–ATP

(b)A–Cross bridge, B–Cross bridge formation,

C–Sliding/rotation, D–Breaking of cross bridge, E–ATP

(c)A–Cross bridge, B–Breaking of cross bridge,

C–Sliding/rotation, D–Cross bridge formation, E–AMP

(d)A–Cross bridge, B–Cross bridge formation,

C–Sliding/rotation, D–ADP, E–Breaking of cross bridge

10 .Given below is a diagrammatic representation of
human skull. Identify A, B, C and D marked in it.

Choose the correct option identifying the labels.

(a)A–Hyoid bone, B–Maxilla, C–Frontal bone, D–Parietal bone

(b)A–Hyoid bone, B–Maxilla, C–Parietal bone, D–Frontal bone

(c)A–Maxilla, B–Hyoid bone, C–Parietal bone, D–Frontal bone

(d)A–Parietal bone, B–Frontal bone, C–Maxilla, D–Hyoid bone

11 .Consider the given figure showing events in muscle
contraction.

Which of the statements given below are true with

reference to above diagram.

I.Neurotransmitter acetylcholine is released as

nerve impulse reaches the end of axon and bind

to receptor sites of motor end plate.

II.Action potential passes from motor end plate

over sarcolemma and then into the T-tubules

and sarcoplasmic reticulum.

III.Calcium ions are released into the sarcoplasm

which bind to troponin, causing a change in its

shape and position.

IV.Myosin cross bridges are able to bind to

exposed active sites of act in.

Choose the correct option

(a) I, II and III

(b) II and IV

(c) I and IV

(d) I, II, III and IV

12 .Identify the labels A, B, C and D in given diagram.

A B C D

(a) Odontoid

process

Neural spine Vertebral

artery

Centrum

(b) Articular

process

Transverse

process

Neural spine Centrum

(c) Transverse

process

Articular

process

Centrum Neural

spine

(d) Vertebral artery Neural spine Centrum Odontoid

process

13 .Consider the given diagram and identify the labels

A, B, C, D and E.

Choose the correct option identifying the labels.

(a)A–llium, B–Acetabulum, C–Pubic symphysis, D–Ischium,

E–Pubis

(b)A–Stapes, B–Acetabulum, C–Pubic symphysis, D–Ischium,

E–Pubis

(c)A–Incus, B–Acetabulum, C–Pubic symphysis, D–Ischium,

E–Pubis

(d)A–Coccyx, B–Acetabulum, C–Pubic symphysis,

D–Ischium, E–Pubis

A

B

C

D

ATP

ATP hydrolysed

to ADP and Pi

ADP

Pi

ADP+Pi

ADP+P

i

ATP

A

B

C

D

C

A

B

D

Vertebral

foramen

A

B

C

D

E