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.Management Sciences
Category: Biology Mcqs
Mycoplasmas have been included in bacteria because:
A. Do not have a cell wall
B. Are heterotrophic
C. Lack membrane bounded organelles
D. Reproduce by binary fission
Most of the cellular secretions are ________ in nature?
A. Glycolipids
B. Glycoproteins
C. Nucleohistones
D. Proteins
Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________?
A. Robert Koch
B. Louis Pasteur
C. Alexander Fleming
D. Leeuwenhoek
The only promoter of leaf senescence in the following plant hormones is________________?
A. Gibberellins
B. Cytokinins
C. Auxins
D. Abscisic Acid
The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________?
A. Diffusion
B. Osmosis
C. Phagocytosis
D. Plasmolysis
“lubb” sound is produced due to___________________?
A. Opening of inlet valve
B. Closure of inlet valve
C. Opening of outlet valve
D. Closure of outlet valve
A gene is said to be dominant, if _________ ?
A It is never expressed in any condition
B. It is expressed only in heterozygous
C It expresses its effect only in heterozygous state
D. It is expressed both in heterozygous and heterozygous condition
In chlorophytes the main energy stores are__________?
A. Cellulose
B. Starch
C. Glycogen
D. All of these
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