Special kind of protein containing iron is called as _____.

1. 1. Hemoglobin
   2. Hormones
   3. Red blood cell
   4. White blood cell

A cistron is _____.

1. 1. Structural of gene
   2. Functional unit gene
   3. Functional unit of RNA
   4. Replication unit of gene

Malphighian tubules absorb waste materials and salts from_____.

1. 1. Hemolymph
   2. Blood
   3. Lymph
   4. Gut

Which excretory product in produced in plants during autotrophic mode of life?

1. 1. CO2
   2. H2O
   3. Both a and b
   4. O2

The normal pH of human blood is_____.

1. 1. 6.4
   2. 7.4
   3. 7.5
   4. 8.5

Photosystem I (PSI) has a chlorophyll molecule which absorbs maximum light of _____ nm.

1. 1. 600
   2. 650
   3. 680
   4. 700

The element in basic structure of proteins which differentiate them from carbohydrates_____.

1. 1. C
   2. S
   3. H
   4. N

Aquatic animals excrete nitrogenous waste commonly in the form of_____.

1. 1. Urea
   2. Ammonia
   3. Trimethylamine oxide
   4. Uric acid

The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is _____.

1. 1. Human Biology
   2. Genetics
   3. Bio-technology
   4. Environmental Biology

Which of the following is not a viral disease?

1. 1. Tetanus
   2. Mumps
   3. Small pox
   4. Cowpox