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Human Biology
study of the body
31
Biology
Undergraduate 1
02/17/2011

Additional Biology Flashcards

 


 

Cards

Term

Characteristics of life

1

Definition

organized from the atom to the biosphere

 

Term

Characteristics of life

2

Definition
use energy and materials from the environment 
Term

Characteristics of life

3

Definition
reproduce offspring
Term

Characteristics of life

4

Definition

growth and development

 

Term

Characteristics of life

5

Definition

maintain relativity constant internal enviroment

Homeostosis

Term

Characteristics of life

6

Definition

respond to internal and external stimuli

 

Term

Characteristics of life

7

Definition
evolutionary history through which organisms change over time
Term
How life is organized(smallest to Largest).
Definition

1.Atom 2. Molecule3.Cell4.Tissue5.Organ

6.Organ System7.Organism8.Population9.Community

10.Ecosystem11.Biosphere

Term

How do humans threaten the biosphere?

Definition
by modifying ecosystems for their own purposes, thus reducing biodiversity
Term
Scientific Method
Definition

observation

hypothesis

experiment

observation

conclusion

 

Term

What is the difference between a hypothesis and a scientific theory?

Definition
Hypothesis is a testable solution,whereas scientific theory is concept based on a wide range of observations and experiments
Term

Know how to write a scientific name correctly.

Definition

Scientific names- Binomials

Genus species

ex.) HomoSapiens

Term

atom

 

Definition
The smallest unit of an element that still retains the chemical and physical properties of the element
Term
element 
Definition
one of the basic building blocks of matter that cannot be broken down by chemical means
Term
isotope
Definition
atom that has the same number of protons as the original atom but a different number of neutrons;has the same atomic number but different atomic mass
Term
molecules
Definition
union of 2 or more atoms of the same element
Term

proton

 

Definition

+

In Nucleus 

Term

Neutron

 

Definition

0

In neucleus

Term
Electron
Definition

-

Orbits Neucleus

Term
ionic bond
Definition

chemical bond in which ions are attracted to eachother by opposite charges

ex.)Na+Cl-

Term
covalent bond
Definition

chemical bond in which atoms share one pair of electrons

ex.) H20-strongest

Term
Hydrogen Bond
Definition
weak bond that arises between a slightly positive hydrogen atom of one molecule and a slightly negative atom of another
Term
properties of water
Definition
1.liquid at room temp,2.doesnt change quickly at room temp,3. High heat vaporization,4.frozen water is less dense than liquid water,5. molecules of water cling together
Term

pH of water and pH of acidic substances vs. alkaline substances

Definition
pH of water is 7,#'s less than are more acidic, #'s more than are basic or alkaline
Term
Hydrolysis reaction
Definition
The addition of water that breaks larger molecules into their subunits  
Term
dehydration reaction
Definition
the removal of water that allows subunits to link together into larger molecules 
Term

carbohydrate

 

Definition
an organic molecule characterized by the atomic grouping H-C-OH, made of subunits called monosaccharides that function as short and long term energy storage
Term
simple carbohydrate
Definition
monosaccharide(1 carbon ring) or a disaccheride(2 carbon rings)
Term
complex carbohydrate
Definition
a polysaccharide (many carbon rings) stores glucose in the liver to maintain blood level
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