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Bio Sci 2

Nucleic Acids : DNA RNA Proteins, Nucleotides. Summary of Cell Parts and Function. Diffusion , Osmosis, Mediated Transport Mechanism, Facilitative Diffusion and Active transport. Comparison of Membrane Transport Mechanisms.

Welcome to your Bio Quiz 2

Membranous tubules and flattened sacs with attached ribosomes used in protein synthesis and transport to Golgi apparatus.

The single-ringed pyrimidine molecules are :
It literally means cell-eating and applies to endocytosis when solid particles are ingested and phagocytic vesicles are formed. It is therefore important in the elimination of harmful substances from the body.
It is the basic building block of DNA and RNA molecules.
Lipid bilayer composed of phospholipids and cholesterol with proteins that extend acrossor are buried in either surface.
It is the movement of solutes from an area of higher concentration to an area of lower concentration in solution.
It is a mediated transport process that requires energy provided by ATP. The process can move substances against their concentration gradients, that is, from lower concentrations to higher concentrations.
In RNA, the organic bases are the same, except that thymine is replaced with
It is the single-stranded biological macromolecule used for protein synthesis, DNA replication, transcription and translation.
It is the diffusion of water across a selectively permeable membrane, such as a plasma membrane.
A spherical, rod-shaped, or threadlike structures used as the major site of ATP synthesis when oxygen is available.
The organic double-ringed purine bases are :
It is the double stranded hereditary or genetic material in cells of organisms.
It is the secretion of materials from cells by vesicle formation.
Guanine binds only to cytosine because the structure of these organic bases allows
These are flattened membrane sacs stacked on each other used for modification, packaging, and distribution of proteins and lipids for secretion or internal use.
Thymine binds only to Adenine because the structure of these organic bases allows
Each nucleotide of DNA is composed of 3 parts, namely
It is is the force required to prevent the movement of water by osmosis across a selectively permeable membrane.
It is a carrier-mediated process that moves substances into or out of cells from a higher to a lower concentration.

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