What is correct for Blood group 'O'
- No antegens but both a and b antibodies are present
- A antegen and b antibody
- Antigen and Antibody both absent
- A and B antigens and a, b, antibodies
The Correct Option is A
Solution and Explanation
Top Questions on body fluids and circulation
- Match List I with List II:Choose the correct answer from the options given below:
List I
List II
A P wave I Heart muscles are electrically silent. B QRS complex II Depolarisation of ventricles. C T wave III Depolarisation of atria. D T-P gap IV Repolarisation of ventricles. - NEET (UG) - 2024
- Biology
- body fluids and circulation
Match List I with List II.
List I
List II
A P-wave I Beginning of systole B Q-wave II Repolarisation of ventricles C QRS complex III Depolarisation of atria D T-wave IV Depolarisation of ventricles Choose the correct answer from the options given below:
- NEET (UG) - 2023
- Biology
- body fluids and circulation
- Given below are two statements:
Statement I: The coagulum is formed of a network of threads called thrombins.
Statement II: Spleen is the graveyard of erythrocytes.
In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2023
- Biology
- body fluids and circulation
- What are the characteristics of capillaries?
- MHT CET - 2023
- Biology
- body fluids and circulation
- Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins
- NEET (UG) - 2021
- Biology
- body fluids and circulation
Questions Asked in NEET exam
- In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x (kcal m-2)yr-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
- NEET (UG) - 2024
- Ecosystems
- These are regarded as major causes of biodiversity loss:
A. Over exploitation
B. Co-extinction
C. Mutation
D. Habitat loss and fragmentation
E. Migration
Choose the correct opisdn:- NEET (UG) - 2024
- loss of biodiversity
- Match List I with List II:Choose the correct answer from the options given below:
List I List II A Robert May I Species-Area relationship B Alexander von Humboldt II Long term ecosystem experiment using out door plots C Paul Ehrlich III Global species diversity at about 7 million D David Tilman IV Rivet popper hypothesis - NEET (UG) - 2024
- Species diversity
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Magnetic Field
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles
Concepts Used:
Blood
Blood is a fluid-like structure that is responsible for transporting oxygen and other nutrients to all the cells of the body. Blood shows characteristics of both tissues and fluid.
Composition of Blood:
Blood is composed of the below-mentioned parts:
- Plasma
- Blood Cells
- Platelets
Types of Blood Cells:
The two types of blood cells present in the body are:
RBC (Red Blood Cells)
RBC’s are also known as Erythrocytes. They are biconcave and are present without a nucleus in human beings. It contain Haemoglobin which is an iron-rich protein due to which the color of blood is red. RBC’s are produced in the bone marrow which is mainly responsible for the transportation of oxygen to and from various tissues and organs present in the human body.
WBC (White Blood Cells)
WBC’s are also known as Leucocytes which are colourless blood cells due to the absence of haemoglobin. They are further divided into two categories such as granulocytes and agranulocytes. Their main responsibility is to provide immunity and maintain defence mechanisms in the human body.