World's only instant tutoring platform
dropdown-logo
Become a tutorPartnershipsAbout usStudent loginTutor login
About us
Login
App StorePlay Store
Get 2 FREE Instant-Explanations on Filo with code FILOAPP
Mark the pair of substances among the following which is essen
Biology Exemplar
Biology Exemplar

Class 11

NCERT Exemplar

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: The Living World

37 questions

arrow
2

Chapter 2: Biological Classification

33 questions

arrow
3

Chapter 3: Plant Kingdom

28 questions

arrow
4

Chapter 4: Animal Kingdom

45 questions

arrow
5

Chapter 5: Morphology of Flowering Plants

42 questions

arrow
6

Chapter 6: Anatomy of Flowering Plants

52 questions

arrow
7

Chapter 7: Structural Organization in Animals

48 questions

arrow
8

Chapter 8: Cell: The Unit of Life

39 questions

arrow
9

Chapter 9: Biomolecules

31 questions

arrow
10

Chapter 10: Cell Cycle and Cell Division

43 questions

arrow
11

Chapter 11: Transport in Plants

66 questions

arrow
12

Chapter 12: Mineral Nutrition

39 questions

arrow
13

Chapter 13: Photosynthesis in Higher Plants

59 questions

arrow
14

Chapter 14: Respiration in Plants

42 questions

arrow
15

Chapter 15: Plant Growth and Development

48 questions

arrow
16

Chapter 16: Digestion and Absorption

34 questions

arrow
17

Chapter 17: Breathing and Exchange of Gases

32 questions

arrow
18

Chapter 18: Body Fluids and Circulation

42 questions

Q1
Cardiac activity could be moderated by the autonomous neural system.
Tick the correct answer.
Q2
Mark the pair of substances among the following which is essential for coagulation of blood.
Q3
ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
View all question
19

Chapter 19: Excretory Products and their Elimination

44 questions

arrow
20

Chapter 20: Locomotion and Movement

39 questions

arrow
21

Chapter 21: Neural Control and Coordination

31 questions

arrow
22

Chapter 22: Chemical Coordination and Integration

39 questions

arrow
Question
Easy
Timing Icon

Solving time: 2 mins

Mark the pair of substances among the following which is essential for coagulation of blood.

A
Heparin and calcium ions

B
Calcium ions and platelet factors

C
Oxalates and citrates

D
Platelet factors and heparin

Views

Views: 5,295 students

Updated on: Mar 2, 2023

Book

Book:

Biology Exemplar (NCERT Exemplar)

tutor 0tutor 1tutor 2
Found 5 tutors discussing this question
Olivia Discussed
Mark the pair of substances among the following which is essential for coagulation of blood.
8 mins ago
Discuss this question LIVE
8 mins ago

Text SolutionText solutionverified iconVerified

Certain factors released by the tissues at the site of injury can initiate coagulation process.
Calcium ions and platelet factor act in the first step of coagulation which is as follows:
(i) At the site of an injury, the blood platelets disintegrate and release a phospholipid, called platelet factor 3 (platelet thromboplastin).
(ii) Injured tissues also release a lipoprotein factor called thromboplastin.
(iii) These two factor combine with calcium ions and certain proteins of the blood plasma to form an enzyme called pro-thrombinase.
(iv) Prothrombiminase catalyzes prothrombin into active protein called thrombin.
(v) Thrombin further converts inative fibrinogens into fibrin in the blood plasma.
(vi) Then the long fibres of fibrin form a dense network upon wound and trap blood corpuscles RBCs, WBCs and platelets) to form a clot.
And the other options are wrong.
Was this solution helpful?
110
Share
Report
Video Solution

Filo tutor solutions (1)

Learn from their 1-to-1 discussion with Filo tutors.

filo Logo
10 mins

Uploaded on: 3/2/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

tutor profile picture
Ashutosh Anand

Total classes on Filo by this tutor - 23,403

Teaches : Biology

Connect instantly with this tutor

Connect now

Was this solution helpful?
72
Share
Report
One destination for complete JEE/NEET preparation
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
Instant 1:1 help, 24x7
60, 000+ Expert tutors
60, 000+ Expert tutors
Textbook solutions
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Big idea maths, McGraw-Hill Education etc
Essay review
Essay review
Get expert feedback on your essay
Get expert feedback on your essay
Schedule classes
Schedule classes
High dosage tutoring from Dedicated 3 experts
High dosage tutoring from Dedicated 3 experts
Trusted by 4 million+ students

Practice more questions from Biology Exemplar (NCERT Exemplar)

Q1
Cardiac activity could be moderated by the autonomous neural system.
Tick the correct answer.
Q2
Mark the pair of substances among the following which is essential for coagulation of blood.
Q3
ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
View all

Practice questions from Biology Exemplar (NCERT Exemplar)

Question 1
Medium
Views

Views: 5,894

The walls of ventricles are much thicker than atria. Explain.
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology Exemplar (NCERT Exemplar)

View solution

Question 2
Medium
Views

Views: 5,877

Explain Rh-incompatibility in humans.
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology Exemplar (NCERT Exemplar)

View solution

Question 3
Easy
Views

Views: 5,460

Read the following statements and choose the correct option.
Statement I: Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement II: Action potential generated at sino-atrial node passes from atria to ventricles. 
  1. Action mentioned is statement I is dependent on action mentioned in Statement II
  2. Action mentioned in statement II is dependent on action mentioned in Statement I
  3. Action mentioned in statement I and II are independent of each other.
  4. Action mentioned in statement I and II are synchronous.
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology Exemplar (NCERT Exemplar)

View 3 solutions

Question 4
Medium
Views

Views: 5,297

How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology Exemplar (NCERT Exemplar)

View solution

View more

Practice more questions from Body Fluids and Circulation

Question 1
Easy
Views

Views: 5,738

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when
  1. AV valves open up
  2. ventricular walls vibrate due to gushing in of blood from atria
  3. semilunar valves close down after the blood flows into vessels from ventricles
  4. AV node receives signal from SA node
Topic

Topic:

Body Fluids and Circulation

View 5 solutions

Question 2
Medium
Views

Views: 5,537

In order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through
  1. Right ventricle, Pulmonary arteries, Lungs, Pulmonary veins, Left atrium
  2. Right ventricle, Pulmonary veins, Lungs, Pulmonary arteries, Left atrium
  3. Right ventricle, Right atrium, Lungs, Pulmonary veins, Left atrium
  4. Right ventricle, Systemic aorta, Lungs, Pulmonary veins, Left atrium
Topic

Topic:

Body Fluids and Circulation

View 2 solutions

Question 3
Easy
Views

Views: 5,773

Assertion : Prothrombinase enzyme act as antiheparin.
Reason : Heparin prevent coagulation of blood in blood vessels.
  1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
  2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
Topic

Topic:

Body Fluids and Circulation

Book

Book:

NEET Question Bank i Biology for AIIMS (Disha)

View solution

Question 4
Easy
Views

Views: 5,498

Myocardial Infarction is caused by
  1. hardening of arteries
  2. lumpy thickness develop in the inner walls of arteries
  3. clot may occur in the lumen of a coronary artery
  4. sudden interruption in blood flow towards a portion of heart
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Chapterwise DPP Sheets for Biology NEET (Disha)

View solution

Practice questions on similar concepts asked by Filo students

Question 1
Views

Views: 5,195

The observable traits of an organism (such as hair color or height) is referred to as the: Group of answer choices Phenotype Alleles Genotype Chromosomes
Topic

Topic:

Biology

View solution

Question 2
Views

Views: 5,786

13-16 :) Use the provided image of a Gram-stained bacterial co-culture to answer questions 13-16. 13.Which feature is unique to the coccus-shaped bacterium a.Peptidoglycan b.Porins c.Membrane Proteins d. More than one of the above e. None of the above Rationale: 14.The rod-shaped bacterium is best described as a a.Gram-negative b.Gram-positive C. Gram-neutral d. More than one of the above e. None of the above Rationale: 15. The following molecules were identified from the low-density envelope component analysis:phospholipids,phosphatidylethanolamine and free fatty acids.These components would be expected to be observed in fractions from a.Pink rods b.Purple cocci C. Both bacteria d.Neither bacterium e. Can't tell from the information provided Rationale: 16.The purple cocci retain the following if the Gram stain is completed properly a.Crystal violet-lodine complex b.Alcohol C. Safranin d. More than one of the above e.None of the above
Topic

Topic:

Biology

View solution

Question 3
Views

Views: 5,920

21. 1 NeURAL Sxstem The neural system of all animals is composed of highly specialised cells called neurons which can detect, receive and transmit different kinds of stimuli. The neural organisation is very simple in lower invertebrates, For example, in Hydra it is composed of a network of neurons. The neural system is better organised in insects, where a brain is present along with a number of ganglia and neural tissues. The vertebrates have a more developed neural system. HumaN NeURAL System The human neural system is divided into two parts : (i) the central neural system (CNS) (ii) the peripheral neural system (PNS) The CNS includes the brain and the spinal cord and is the site of information processing and control. The PNS comprises of all the nerves of the body associated with the CNS (brain and spinal cord). The nerve fibres of the PNS are of two types: (a) afferent fibres (b) efferent fibres The afferent nerve fibres transmit impulses from tissues/organs to the CNS and the efferent fibres transmit regulatory impulses from the CNS to the concerned peripheral tissues/organs. The PNS is divided into two divisions called somatic neural system and autonomic neural system. The somatic neural system relays impulses from the CNS to skeletal muscles while the autonomic neural system transmits impulses from the CNS to the involuntary organs and smooth muscles of the body. The autonomic neural system is further classified into sympathetic neural system and parasympathetic neural system. 21.3 NEURON AS STRUCTURAL AND FUNCTIONAL UNIT OF NEURAL SYSTEM A neuron is a microscopic structure composed of three major parts. namely, cell body, dendrites and axon (Figure 21.1). The cell body contains cytoplasm with typical cell organelles and certain granular bodes called Nissl's granules. Short fibres which branch repeatedly and procet out of the cell body also contain Nissi's gianrutes and are cattect enn mites These fibres transmit impulses towards the cell body. The axon is a 1006
Topic

Topic:

Human Physiology

View solution

Question 4
Views

Views: 5,504

Identify numbers 1 to 5 1
Topic

Topic:

Biology

View solution

View more
Doubt Icon Doubt Icon

Stuck on the question or explanation?

Connect with our Biology tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Related books for questions on Body Fluids and Circulation

next icon
next icon
Question Text
Mark the pair of substances among the following which is essential for coagulation of blood.
Updated OnMar 2, 2023
TopicBody Fluids and Circulation
SubjectBiology
ClassClass 11
Answer TypeText solution:1 Video solution: 1
Upvotes182
Avg. Video Duration10 min