Biomedical Laboratory Science HOSA

Why was a bio safety symbol created

To indicate the presence of a biological hazard

Volumetric flask

Pear shaped flask

How is an electron microscope used?

By focusing an electron beam on the specimen

What is the most common microscope used in the lab?

Bright field

What are bright field microscopes used to view?

Stained specimens

What kind of light do Epifluorescence microscopes use?

Ultraviolet

What are achromatic lenses used for?

To correct the light from separating when it passes through glass

What is Cytology?

The biology of cells

What are some Monosaccharides?

Glucose and fructose

What are some Disaccharides?

Lactose and Sucrose

What are Polysaccharides?

Composed of many glucose monomers

What is a Nitrogenous base?

An important component of nucleic acids; forms the critical hydrogen bonds between opposing strands of DNA

What are Phosphodiester bonds?

Bonds that are responsible for the polymerization of nucleic acids by linking sugars and phosphates of adjacent nucleotides

What is Semiconservative replication?

When each original strand of DNA acts as a template, or model, for building a new side

What is Lysis?

The breakdown of cells

What is a Vector?

A piece of DNA that carries one or more genes into a cell

What are Transcription Factors?

Molecules that regulate gene expression by binding onto enhancer or silencer regions of DNA and causing an increase or decrease in transcription of RNA

What is an Intron?

The region on a gene that is transcribed into an mRNA molecule but not expressed in a protein

What is Ethidium Bromide?

A DNA stain; glows orange when it is mixed with DNA and exposed to UV light

What is a Quaternary Structure?

The structure of a protein resulting from the association of two or more polypeptide chains