Biology Test 226

Result

Biology Test 226

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Atrial natriuretic factor (ANF) is released in response to the increases in blood volume and blood pressure. Which of the following is NOT the function of ANF ?

A
Stimulates aldosterone secretion

B
Inhibits the release of renin from JGA

C
Stimulates salt loss in urine

D
Inhibits sodium reabsorption from collecting duct

Solution

There will be more absorption of water which leads to increase in blood pressure and ANF is responsible for decreasing BP as it is also mentioned in question.
Question 2
4 / -1

Which muscle protein acts as ATPase ?

A
Actin

B
Troponin

C
Myosin

D
Tropomyosin

Solution

Because actin and tropomyosin is binding protein in muscle and myosin is a maximum active for independent calcium bind
Question 3
4 / -1

Movement at Atlanto-occipital joint is an example of

A
Class I lever

B
Class II lever

C
Class III lever

D
Hingle lever

Solution

The movements permitted in this joint are:

flexion and extension around the mediolateral axis, which give rise to the ordinary forward and backward nodding of the head.

slight lateral motion, lateroflexion, to one or other side around the anteroposterior axis.
Question 4
4 / -1

Match the locomotory structure of column I with the name of phylum in column II

A
A-V,B-IV,C-III,D-II

B
A-IV,B-I,C-III,D-II

C
A-V,B-I,C-III,D-II

D
A-IV,B-II,C-III,D-V

Solution

(A) Parapodia - Annelida

(B) Muscular foot - Mollusca

(C) Pseudopodia - Protozoa

(D) Tube feet - Echinodermata

So, the correct answer is Option B.
Question 5
4 / -1

‘Uncinate process’ is associated with

A
Skull

B
Pectoral girdle

C
Pelvic girdle

D
Hind limb

Solution

Uncinate process – a projection arising from the lower part of the head and extending medially to lie beneath the body of the pancreas. It lies posterior to the superior mesenteric vessels.
Question 6
4 / -1

In the following disorder the synovial membrane starts secreting abnormal granules called Pannus which cause erosion of cartilage

A
Osteoarthritis

B
Gouty arthritis

C
Rheumatoidal arthritis

D
Osteoprosis

Solution

Rheumatoidal arthritis it occurs due to accumulation of antibody IgM in synovial membrane and causes inflammation. it is an autoimmune disorder.
Question 7
4 / -1

In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud shall be

A
Distal

B
Proximal

C
Intercalary

D
Anywhere

Solution

In racemose type of inflorescences the main axis continues to grow, the flowers are borne laterally in an acropetal succession, i.e. youngest flower is present at apex and oldest flower is present at the base. In racemose, inflorescence the growth of floral axis is unlimited or indefinite.

In cymose type of inflorescence the main axis terminates in a flower, hence is limited in growth. The flowers are borne in a basipetal. order, i.e. youngest flower is present at the base and oldest flower is present at the apex. In cymose inflorescence oldest flower remains in center and youngest towards the periphery. This type of arrangement is called centrifugal.
Question 8
4 / -1

Purkinje’s cells are most complex neurons of

A
Cerebrum

B
Cerebellum

C
Hypothalamus

D
Medulla oblongata

Solution

A copy of the input also goes directly to the deep cerebellar nuclei. Granule cells are extremely small and extremely numerous. The only way out of cerebellar cortex is given by Purkinje cell axons, which make inhibitory connections with neurons in the deep cerebellar nuclei.
Question 9
4 / -1

In excitable cells, re-polarization is closely associated with one of the following events

A
Na⁺ efflux

B
Na⁺ influx

C
K⁺ efflux

D
K⁺ influx

Solution

After depolarisation axon membrane causes potassium gates to open, within a fraction of secs, K⁺ diffuses outside the membrane and restores the resting potential of the membrane at the site of excitation & the nerve fibre becomes once more responsive to further stimulation.
Question 10
4 / -1

All are None law (principle) states that

A
All stimuli produce action potentials

B
Any cell membrane can generate and propagate an action potential if stimulated to threshold value

C
Potential difference can either be 0 or 100

D
The property of action potential is independent of the strength of depolarizing stimulus

Solution

The all-or-none law is the principle that the strength by which a nerve or muscle fibre responds to a stimulus is independent of the strength of the stimulus. If that stimulus exceeds the threshold potential, the nerve or muscle fibre will give a complete response; otherwise, there is no response.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Biology Test 226

Result

Biology Test 226

Score

-

Rank

-

SHARING IS CARING

Question 1

Stimulates aldosterone secretion

Inhibits the release of renin from JGA

Stimulates salt loss in urine

Inhibits sodium reabsorption from collecting duct

Solution

Question 2

Actin

Troponin

Myosin

Tropomyosin

Solution

Question 3

Class I lever

Class II lever

Class III lever

Hingle lever

Solution

Question 4

A-V,B-IV,C-III,D-II

A-IV,B-I,C-III,D-II

A-V,B-I,C-III,D-II

A-IV,B-II,C-III,D-V

Solution

Question 5

Skull

Pectoral girdle

Pelvic girdle

Hind limb

Solution

Question 6

Osteoarthritis

Gouty arthritis

Rheumatoidal arthritis

Osteoprosis

Solution

Question 7

Distal

Proximal

Intercalary

Anywhere

Solution

Question 8

Cerebrum

Cerebellum

Hypothalamus

Medulla oblongata

Solution

Question 9

Na+ efflux

Na+ influx

K+ efflux

K+ influx

Solution

Question 10

All stimuli produce action potentials

Any cell membrane can generate and propagate an action potential if stimulated to threshold value

Potential difference can either be 0 or 100

The property of action potential is independent of the strength of depolarizing stimulus

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

Na⁺ efflux

Na⁺ influx

K⁺ efflux

K⁺ influx