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Cells are of different sizes.

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Important Questions on Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.

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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Which one of the following is not applicable to RNA?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Proteins P, Q, and R are associated with an intact organellar membrane in a cell. If the intact organelle is treated with a high ionic strength buffer, only protein R remained associated with the membrane fraction. Based on this, one could conclude that:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Root pressure is usually acidic because:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Nuclear envelope is a derivative of:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
The equivalent of a structural gene is:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Identify the correct order of organization of genetic material from largest to smallest :
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Chromatophores take part in:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Gene regulation governing lactose operon of E. coli that involves the lac I gene product is:
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Microtubules are the constituents of:
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Select the correct matching in the following pairs:
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
The schematic below describes the states of the lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell?
Question Image
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Which one of the following is not an inclusion body found in prokaryotes?
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Select the mismatch.
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Select the wrong statement.
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

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Life Sciences>From Molecules to Organisms: Structures and Processes>Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.>Structure and Function - Systems of specialized cells within organisms help them perform the essential functions of life.All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Fertilization in humans is practically feasible only if: