Biology Lab Final sheets #1

22 terms by darkstargirl13

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Quiz #1 out of 4.

hypothesis

tentative explanation, proposed testable answer on the scientific question

dependent variable

response to the experimental conditions which investigator measures, counts, or records.

independent variable

what the investigator varies in the experiment

level of treatment

appropiate values to use for the independent variable

control

part of the experiment where the independent variable is removed or set at standard value

(An investigator studies the amount of alcohol produced by yeast when it is incubated with different types of sugars) Dependent Variable?

amount of produced alcohol

(An investigator studies the amount of alcohol produced by yeast when it is incubated with different types of sugars) Independent Variable?

Incubation with different types of sugars

(An investigator studies the amount of alcohol produced by yeast when it is incubated with different types of sugars) Controlled Variable?

type of yeast, the conditions of incubation, method of alcohol level measurement

X asis (horizontal)

Axis where independent variable is graphed

Y axis (vertical)

Axis where dependent variable is graphed

Line graph

Graphs used for a Continuous variable

bar graph

Graphs used for Discrete variable

Structural Isomer

molecule which differs from the normal molecule by its three dimensional structure but has same molecular formula

functional group

part of molecules that when attached to hydrocarbons modify their chemical and physical properties

Difference between carbonyl aldehyde and carbonyl ketone functional groups

one hydrogen atom. In aldehyde it bonds to the end but in ketone it bonds inside the carbon chain

hydroxyl functional group

Functional group carried by an alcohol molecule

carboxyl functional group

functional group carried by organic acid molecule

Esters

product reaction between organic acids and alcohols

Sulfydryl

functional group carried by mercaptans

Hydroxyl and Carbonyl groups

functional groups included in carbs molecules

Peptide linkage

condensation reaction between two amino acids. The hydrogen atom on the amino group of one amino acid reacts with the hydroxyl group on the carboxyl group of another.

3 components of the nucleotide

phosphate group, five carbon sugar and a nitrogen base.

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