MDCAT Past Paper
The cell wall of a prokaryotic cell is composed of:
The cell wall of prokaryotes is made of carbohydrates and proteins.
The compound is peptidoglycan or mucopeptide in which a short peptide is attached to murein or muramic acid.
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Save for Later ReadProtein and lipids are modified into glycoprotein & glycolipids by which cell organelle?
Golgi bodies are cell organelles.
The main function of Golgi bodies or Golgi apparatus is to synthesize proteins and lipids.
The complex proteins and lipids like glycolipids and glycoproteins are manufactured by Golgi bodies.
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Save for Later ReadWhich structure of prokaryotic cell wall plays the role of mitochondrion?
Since mesosomes help in respiration which is performed by mitochondria in eukaryotic cells they are analogous to mitochondial function.
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Save for Later ReadCylosis and amoeboid are due to:
because amoeba moves with the help of microfilaments
Microfilaments (actin filaments) are the filaments that are present in the cytoplasm of the cells (eukaryotic) and they forms a part of the cytoskeleton
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Save for Later ReadIts cyclic structure consists of 5-membered rings similar to furanose.
Thus it is also called D-Ribofuranose.
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Save for Later ReadWhich type of bond must be broken for water to vaporize?
Hydrogen bonds must be broken for water to evaporate.
Water molecules with high kinetic energy evaporate; the remaining molecules are cooler.
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Save for Later ReadWhich statement is true regarding both starch and cellulose?
Starch and cellulose are two very similar polymers. In fact,
they are both made from the same monomer, glucose, and have the same glucose-based repeat units.
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Save for Later ReadBiologically, __________ plays key roles in maintaining the integrity of lipid bilayer membranes
Biologically, hydrophobic exclusion plays a key role in maintaining the integrity of lipid bilayers as well as globular proteins,
both of which literally are hydrophobic on the inside and hydrophilic on the outside
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Save for Later Read_____forms almost three-fourths of the body by weight.
All animals and plants need water to survive, and the human body is more than three-fourths water.
Life forms use water to carry nutrients around the body and to take away waste.
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Save for Later ReadCatabolic reactions break down complex chemicals into simpler ones and are associated with energy release.
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Save for Later Read