Passage cells help in
transport of water towards pericycle
transport of water towards epiblema
absorption of water from soil
passage of CO2 towards stomata
Which one of the followings is an in situ method of biodiversity conservation?
National park
Botanical garden
Zoological garden
Scientific laboratory
Nucleosome contains
Only histone protein
Both DNA and histone protein
Only DNA
Both DNA and RNA
B.
Both DNA and histone protein
A nucleosome is a basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around eight histone protein cores. It contains both DNA and histone protein. It is the negatively charged DNA wrapped around the positively charged his octamer. It consists of 200bp of DNA helix.
All of the following symptoms are found in jaundice except
disorders of hepato-biliary system
abnormal secretion of pancreatic and gastric juices
bile duct obstruction
anaemia
Which one of the following combinations acts as a usual antigen binding site of an antibody?
Variable regions of a light and another heavy chain
Variable regions of two light chains
Variable regions of two heavy chains
Variable region of a heavy chain and constant region of a light chain
Neoteny refers to
development of gonads
moulting
metamorphosis
retention of larval traits in the adult body
The animal species controlling the ecosystem functioning is known as
edge species
pioneer species
keystone species
umbrella species
Central dogma in molecular biology is
RNA DNA Protein
DNA RNA Protein
RNA Protein DNA
DNA Protein RNA