Which of the following structure primarily helps in attachment of bacteria on various surfaces____________??
A. Flagella
B. Pili
C. Both of these
D. None of these
Category: Biology Mcqs
The distal blind end of the malpighian tubules bathes freely in____________?
A. Digestive tract
B. Intestines
C. Haemocoel
D. Coelom
Which of the following, which one is a contagious disease ?
A. Tuberculosis
B. Lungs cancer
C. Asthma
D. Emphysema
Production of pyrogens is a __________ phenomenon ?
A. Protective
B. Destructive
C. Constructive
D. Aggressive
Which of the statement about viruses is incorrect___________________?
A. We can not grow them in laboratories on artificial medias
B. They are obligate intracellular parasite.
C. They can synthesize their nucleic acid
D. They are resistant to most of antibiotic treatment
Protonema is___________??
A. Thallus like
B. Algae like
C. Fungus like
D. Plant like
Aquatic arthropods respire through__________??
A. Spiracles
B. Gills
C. Book lungs
D. Both b and c
Enzyme present in the saliva is_____________??
A. lipase
B. trypsin
C. ptyalin
D. invertase
A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called________________??
A. Monosaccharide
B. Fatty acid
C. Neutral lipid
D. Nucleic acid
Simple tissues and complex tissues are two groups of_________tissues.?
A. Meristematic
B. Permanent
C. Epidermal
D. Supporting
