Which of the following combination is an example of self replicating organelles?

1. 1. Mitochondria Chloroplast
   2. Mitochondria Nucleus
   3. Mitochondria Vacuole
   4. Mitochondria Ribosomes

The contraction of _____ muscle fibers is controlled by hormones.

1. 1. a smooth
   2. a skeletal
   3. a cardiac
   4. all of these

Which one of the following is not the characteristic of mitochondria?

1. 1. It contains F1 particles
   2. Number of mitochondria is constant
   3. It is a self replicating organelle
   4. It is involved in the synthesis of protein

Which of the following is present in all the living things?

1. 1. DNA or RNA
   2. Vacuole
   3. Cell nucleus
   4. Cell membrane

Ribosomal RNA (rRNA) constitutes _____ of the total cellular RNA.

1. 1. 10-20%
   2. 80%
   3. 3-4 %
   4. 90%

What is Chemically auxins?

1. 1. Indole propionic acid
   2. Indole acetaldehyde
   3. Indole carboxylic acid
   4. Indole acetic aci

The process in which a sperm joins with an egg is _____.

1. 1. Pollination
   2. Asexual reproduction
   3. Fertilization
   4. Respiration

Connective tissues is / are _____.

1. 1. blood
   2. cartilage
   3. bone
   4. all the above

Which of the following chemical component has the greatest contribution in the total mammalian cell weight?

1. 1. Water
   2. Proteins
   3. Lipids
   4. Carbohydrate

Among the following, which virus has special affiliations with the tumor production?

1. 1. Polio virus
   2. Retrovirus
   3. Hepatitis virus
   4. Pox virus