Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong_____.

1. 1. Fibrous Proteins
   2. Globular proteins
   3. Both a and b
   4. All of these

The basic structural unit of a chromosome is_____.

1. 1. The centromere
   2. Telomere
   3. Histone
   4. Nucleosome

Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls?

1. 1. Sphenopsida
   2. Psilopsida
   3. Lycopsida
   4. Prteropsida

E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is_____.

1. 1. 0.1-600 um
   2. 1.1-1.5 um (width) 2.0-6.0 um (length)
   3. 100-200 nm
   4. 0.75-1.25 um

Haemoglobin can be almost completely oxygenated by an oxygen pressure of _____of mercury.

1. 1. 100 mm
   2. 10 mm
   3. 120 mm
   4. 10 cm

A cofactor made of inorganic ion which is detachable is called_____.

1. 1. Prosthetic group
   2. Coenzyme
   3. Cofactor
   4. Activator

_____function as multisensory hydraulic valve.

1. 1. Guard cells
   2. Lenticels
   3. Hydathods
   4. None of these

An activated enzyme consisting of polypeptide chain and a cofactor is called_____.

1. 1. Holoenzyme
   2. Activated enzyme
   3. Both a and b
   4. Apoenzyme

Which is a genetically modified crop?

1. 1. Bt-cotton
   2. Bt-brinjal
   3. Golden rice
   4. All

The skeleton of the sponges is in the form of variously shaped needle like structures called_____.

1. 1. Spicules
   2. Stripules
   3. Brails
   4. Spines