Biology 1 LAB Tarleton State University First EXAM | Questions & Answers (100 %Score)
Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert
Solutions
What are light v electron microscopes? - They magnify and focus rays of light with the use of lenses
while electron microscopes use a bean of electrons magnified and focused by the use of magnets
What are compound microscopes? - - Most common type of lab microscope (Used in OUR lab)
- Has two set of lenses (contained in eyepiece and the objective respectively)
Parts of a microscope - eyepiece, objective lens, fine adjustment know, course adjustment knob, stage,
stage clips, diaphragm
(look at picture in lab manual)
What are enzymes? - biological catalysts that speed up chemical reactions necessary for cells to
function. They do this by lowering activation energy (the energy needed to start reactions)
What would happen if enzymes never existed? - Cells would not be able to function properly (and then
life would be supported too slowly)! Enzymes are VITAL
What are the components of enzymes? - 1. Substrate: the molecule that is changed by enzyme
2. Product: the end result of chemical reaction
3. The Enzyme: neither changed or destroyed, is a protein, sensitive (especially to ph and temp)
Peroxidase enzymes break down _____ and produce a natural by-product ____. However, Peroxidase
itself remains ________ - Peroxidase (enzyme) breaks down hydrogen peroxide and produce cellular
respiration (water + oxygen). Peroxidase (in this experiment it is the potato) will remain unchanged but
oxygen bubbles will be produced!
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