(a) Oxygen
(b) Carbon
(c) Hydrogen
(d) Nitrogen
Choose the correct answer from the options given below :
Elemental Weight in Human Body
The human body is composed of several elements, primarily Oxygen, Carbon, Hydrogen, and Nitrogen. Understanding their relative abundance by weight is crucial in biology and chemistry.
Element Percentages by Weight
The approximate percentage by weight of the main elements in the human body are:
- Oxygen (O): Approximately 65%
- Carbon (C): Approximately 18.5%
- Hydrogen (H): Approximately 9.5%
- Nitrogen (N): Approximately 3.2%
Ordering Elements by Weight
Arranging these elements in descending order based on their percentage weight gives the following sequence:
- Oxygen (O) - (a)
- Carbon (C) - (b)
- Hydrogen (H) - (c)
- Nitrogen (N) - (d)
Therefore, the correct order is (a), (b), (c), (d).
Similar Questions
- Which one of the following is the site for active ribosomal RNA synthesis ?
Smooth endoplasmic reticulum ______________ .
The correct sequence of adult cell cycle phases is _______________ .
Cell theory was formulated by __________________ .
- Given below are two statements :
Statement I : Chromosomes are fully condensed at the end of prophase I.
Statement II : Meiosis I resembles mitosis.
In the light of the above statements, choose the most appropriate answer from the options given below : Endomembrane system includes _______________ .
The plastid that stores xanthophyll is known as ________.
- Mitochondrial inner membrane encloses ______
- Match List-I with List-II.
List-I List-II A. Starch I. Fights infection B. Antibody II. Energy storage C. Concanavalin A III. Glucose transport D. Glut-4 IV. Lectin
Choose the correct answer from the options given below : - Match List-I with List-II.
List-I List-II A. Cristae I. Flat membrane sacs in stroma of chloroplast B. Cisternae II. Infoldings in mitochondria C. Thylakoids III. Cell membrane D. Phospholipid IV. Disc shaped sacs in the Golgi apparatus
Choose the correct answer from the options given below :
Important Questions from Cell Structure and Function
- Which one of the following is the site for active ribosomal RNA synthesis ?
Smooth endoplasmic reticulum ______________ .
The correct sequence of adult cell cycle phases is _______________ .
Cell theory was formulated by __________________ .
- Given below are two statements :
Statement I : Chromosomes are fully condensed at the end of prophase I.
Statement II : Meiosis I resembles mitosis.
In the light of the above statements, choose the most appropriate answer from the options given below :
