Multiple Choice QuestionsPigment-containing memberanous extensions in cyanobacteria are
heterocysts
basal bodies
pneumatophores
pneumatophores
D.
pneumatophores
Cyanobacteria contain chlorophyll but the chlorophyll is not located in chloroplasts, rather it is found in chromatophores, infolding of the plasma membrane, where photosynthesis is carried out.
Heterocysts are specialised nitrogen -fixing cells formed from a centriole and a short cylindrical array of microtubules.
Pneumatophores are lateral roots that grow upward for varying distance and function as the site of oxygen intake for the submerged primary roots.
The Golgi complex plays a major role
in trapping the light and transforming it into chemical energy
in digesting proteins and carbohydrates
as energy transferring organelles
as energy transferring organelles
Which of the .following structures is not found in a prokaryotic cell?
Nuclear envelope
Ribosome
Mesosome
Mesosome
Column-I |
Column-II |
| Thylakoids | Dis-shaped sacs in Golgi apparatus C |
| Cristae | Condensed structure of DNA |
| Cisternae | flat membranous sacs in stroma |
| Chromatin | Infoldings mitochondrial |
Which of the following are not membrane bound?
Vacuoles
Ribosomes
Lysosomes
Lysosomes
Which structures perform the function of mitochondria in bacteria?
Nucleoid
Ribosomes
Cell wall
Cell wall
The structures that help some bacteria to attach to rocks and/or host tissues are
Rhizoids
Fimbriae
mesosomes
mesosomes
The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as
microtubules
microfilaments
intermediate filaments
intermediate filaments
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