BCECE - 2015 (Biology)

Giardia parasites live in the intestines of people and animals. Giardia is a microscopic parasite that causes giardiasis.

The range of length of sponges is 1 mm - 100 mm.

Phylum Annelida includes over 9,000 species.

Nutrition in Euglena is holophytic. Euglena use their chloroplasts to produce nutrients through photosynthesis.

Poterion is an example of porifera.

Sea urchin has its mouth on the lower side and anus on the upper side.

Ancylostoma is also called hookworm.

Exocoetus is also known as flying fish.

Pomfret is a marine water fish.

The number of digits in the limb used for walking by reptiles are 5.

12 pairs of cranial nerves are present in birds.

Lemur has an opposable thumb. The thumb that can be moved around to touch the other fingers is called an opposable thumb.

Emu belongs to a family of flightless birds called Ratites.

In order to sediment free ribosomes, centrifugation requires 3,00,000 g.

CsCl is generally used for creating density gradient during centrifugation.

Beroe belongs to phylum Ctenophora.

Lysozyme can hydrolyse peptidoglycans.

SDS-PAGE (sodium dodecyl sulphate-polyacrylamide gel electrophoresis) is commonly used in the lab for the separation of proteins based on their molecular weights.

Adiantum is called walking fern. In Adiantum, new plantlets grow wherever the arching leaves of the parent touch the ground, creating a walking effect. 

Fluorescence microscopy uses acridine orange. Acridine orange is a fluorescent cationic dye.

N-Acetylglucosamine is a monosaccharide and a derivative of glucose. It is part of a biopolymer in the bacterial cell wall.

Order Rosales belongs to series Calyciflorae.

Oxygenation of blood occurs through moist skin in an earthworm.

Sulphur granules are surrounded by a single layer membrane.

2 basal body rings are present in gram positive bacteria.

The filament in flagellum can rotate by 360 degrees.

Food vacuoles contain hydrolases.

Each of the partial partitions in a mitochondrion formed by infolding of the inner membrane are called cristae.

Pectic polysaccharides are present in primary cell wall.

Flow cytometry allows separation of nucleic acids on the basis of size and density.

Proteins which help other proteins to fold properly are called chaperones. Chaperones are proteins that assist the covalent folding or unfolding and the assembly or disassembly of other macromolecular structures.

The linkage in disaccharides is ether.

In idiogram, chromosomes of an organism are arranged according to the position of centromere.

Nitrogenase is a molybdenum containing enzyme.

Hexacosyl palmitate is a wax.

All proteins do not have a quarternary structure. Quaternary structure is the arrangement of multiple folded proteins or coiling protein molecules in a multi-subunit complex.

A tripeptide is a peptide consisting of three amino acids joined by peptide bonds.

ATP do not have any phosphodiester bonds.

tRNA have clover leaf-like structure.

Optimum pH of pepsin ~ 2