Hesi - Biology

Front 1

Biological system of Organization, smallest to largest?

Back 1

Kingdom, Phylum, Class, Order, Family, Genus, Species

Front 2

Three steps in the Scientific Process?

Back 2

1st: Hypothesis
2nd: Experiment
3rd: Conclusion

Front 3

Specific Heat?

Back 3

The amount of heat necessary to raise the temperature of 1 gram of a molecule by 1* C.

Front 4

Cohesion?

Back 4

The ability of a molecule to stay bonded or attracted to another molecule of the same substance.

ex: Water running together on a newly waxed car.

Front 5

Adhesion?

Back 5

The ability of water to bond to or attract other molecules or substances.

ex: when water is sprayed on a wall, some of it sticks = adhesion.

Front 6

Most important biological molecules?

Back 6

Carbohydrates, lipids, proteins & nucleic acids.

Front 7

Carbohydrates - description & function.

Back 7

* Long chains (polymers) of sugars

* Storage

* Structure

* Energy

Front 8

Lipids - three kinds

Back 8

Fatty acids, phospholipids & steroids.

Front 9

Two kinds of Lipids and descriptions.

Back 9

Saturated Fatty Acids: contain no double bonds in their hydrocarbon tail; solid @ room temp; the detrimental version (heart disease)

Unsaturated Fatty Acids: have one or more double bonds; liquid @ room temp.

Front 10

Steroids?

Back 10

Components of membranes; precursors to significant hormones.

Front 11

Proteins - description & function.

Back 11

* Most significant contributor to cellular function

* Polymers of 20 amino acids

* Largest of the biologic molecules

* Enzymatic proteins catalyze reactions

Front 12

Nucleic Acids - description & function.

Back 12

* Components of the molecules of inheritance

* DNA: Molecule specific to an organism that contains the code necessary for replication

* RNA: used in transfer and as a messenger of the genetic code

Front 13

Metabolism?

Back 13

The sum of all chemical reactions that occur in an organism. Reactions follow metabolic pathways from high to low energy, catalyzed by enzymes.