The diagnostic test that confirms typhoid in humans is

Meselson and Stahl carried out centrifugation in

C s C l_{2}

density gradient to separate :

DNA from RNA
DNA from protein
The normal DNA from $^{15} N$ -DNA
DNA from t-RNA

Topic:

Molecular Basis of Inheritance

Exam:

Class 12th Board 2020

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Study the age pyramids ‘A’, ‘B’ and ‘C’ of the human population given below and answer the questions that follow :

(a) Identify pyramids ‘B’ and ‘C’.
(b) Write the basis on which the above pyramids are plotted.

Topic:

Ecosystem

Exam:

Class 12th Board 2020

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(a) Identify the figure given below and also identify the parts B, C, D and E.

(b)State the function of E

Topic:

Sexual Reproduction in Flowering Plants

Exam:

Class 12th Board 2020

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enters a certain insect’s body, the insect gets killed, but itself remains unaffected. Explain how it is possible.

When

B a c i ll u s

t h u r in g i e n s i s

Topic:

Biotechnology: Principles and Processes

Exam:

Class 12th Board 2020

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Practice questions from Human Health and Disease in the same exam

Name the two primary lymphoid organs. State the importance of T-lymphocytes.

Topic:

Human Health and Disease

Exam:

Class 12th Board 2020

View solution

ELISA technique is based on the principle of

DNA replication
Antigen and Antibody interaction
Pathogen and Antigen interaction
Antigen and Protein interaction

Topic:

Human Health and Disease

Exam:

Class 12th Board 2020

View 7 solutions

Name the type of immunity the mother provides the newborn baby. How does it happen ?

Topic:

Human Health and Disease

Exam:

Class 12th Board 2020

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(a) Write the specific name of the genus Plasmodium that causes one of the mystserious types of diseases in humans. Name the disease.
(b)Describe the events in the life cycle of Plasmodium which take place in the female Anopheles.
(c)Explain what happens in the RBCs of the humans when Plasmodium gains entry into them. How does the human body get affected ?

Topic:

Human Health and Disease

Exam:

Class 12th Board 2019

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Practice more questions from Human Health and Disease

Types of cancer are -
A. sarcoma
B. leukaemia
C. gastric ulcer
D. lymphoma

A,B,D
B,C
A,C,D
A,B,C,D

Topic:

Human Health and Disease

Book:

Dr. Ali Objective Biology

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Name the two types of cells in which the HIV multiplies after gaining entry into the human body.

Topic:

Human Health and Disease

Book:

Trueman's Biology for NEET (Truemans)

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Entamoeba gingivalis lives in the:

Intestine
Colon
Pus pockets of pyorrhoea
Intestines and colon

Topic:

Human Health and Disease

Book:

College Algebra

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Broad spectrum antibiotic is that which-

Medium

Acts on both pathogens and hosts
Acts on all bacteria and viruses
Acts on a variety of pathogenic microorganisms
Is effective

Topic:

Human Health and Disease

Book:

Biology-for-NEET-Volume-2-Class-XII

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Practice questions on similar concepts asked by Filo students

a. In general terms, what should the blank for the colorimeter/spectrophotometer consist of?

b. What was the purpose of zeroing the colorimeter/spectrophotometer?
2. When a person is determining the concentration of a sample, they will frequently repeat the same measurement of a sample by preparing three or more identical tubes (that is, make replicates).
a. Although you did not set up replicates today, what would be the purpose of setting up replicates?
b. If you had tested three replicates of test tube #2 in the determination of glucose concentration, what would you do with the data from the three replicates?

Topic:

Biology

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The distance between two nucleotides of a polynucleotide strand of DNA is

$20 \overset{˚}{A}$ .
$0.2 nm$ .
$0.34 nm$ .
$34 nm$ .

Topic:

Biotechnology

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explain protein denaturation, including how it occurs and the consequences in response to an increase in temperature and a change in PH .

Topic:

Biology

View solution