BIO Exam 1 Flashcards
What are the eight properties of life?
- Order
- Response to stimuli
- Reproduction
4.Adaptation - Growth and development
- Regulation
- Homeostasis
- Energy Processing
Why is adaptation important?
This ensures that animals best suited to the enviornment reproduce and pass on their DNA.
Levels of organizarion (smallest to largest)
- Atom
- Molecule
- Macromolecule
- Organelle
- Cell
- Tissue
- Organ
- System organism
- Community
- Population
- Biosphere
Largest level of organization
biosphere
smallest level of organization
atom
What is an example of a stimuli response?
Animals adjust their body temperature depending on the weather.
Why do animals reproduce?
To ensure the survival of their species. (Organisms must reproduce to pass their genes (DNA) to their offspring)
What is adaption?
A consequence of evolution by natural selection animals adapt over generations to their environment.
How do animals grow? (what process)
cell division
Regulation
System of the body, such as the circulatory system. Ensure that nutrients, oxygen, carbon dioxide, and water get distributed throughout the body. There are many systems directing and coordinating this regulation.
What is homeostasis?
The organisms way of maintaining stable internal conditions in response to the changes in the external and internal environment. (Ex. body temp or sugar in the blood)
How is energy processing related to the other properties?
For an animals’ body to do anything it requires energy! Energy is how the body takes food and uses it as fuel. This allows the body to move, build, grow, develop, maintain homeostasis, respond to stimuli, and reproduce
Who came up with the system of hierarchial taxonomy?
Carl Linnaeus
Catergories of hierarchial taxonomy?
- Kindgdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
King Phillip Came Over For Good Soup
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
What is the genus and species of humans
Genus: Homo
Species: Sapiens
Why study chemistry at the beginning of Zoology?
Animals are composed of chemicals that underlie and provide for all bodily functions.
What is matter?
anything that occupies space and has mass
What is all matter composed of?
Elements which are made of atoms
What states can matter be in?
Solid, Liquid, Gas
What are subatomic particles?
protons, neutrons, electrons
What is made of subatomic particles?
Atoms
What is an isotope?
Atoms of the same element that have the same number of protons but different number of neutrons
What is a compound?
when two or more different atoms bind together
What is a molecule?
when two or more atoms combine chemically (bonds form) of the same element
What are the three types of bonds?
ionic, covalent, hydrogen
Water is a (BLANK) bond?
covalent
ionic bonds . . .
transfer electrons
covalent bonds . . .
sharing of electrons
organic matter
Contain carbon
Large, covalently bonded
Carbs, nucleic acids, fats, and proteins
inorganic matter
Lack carbon
Small, simple molecules
Water, salts, acids, bases
What are the 6 special properties of water?
- Hydrogen Bonds
- Polarity
- Temperature Stabilizer
- Cohesion
- Adhesion
- Universal Solvent
What animal takes advantage of water properties?
Water spider
Why does ice float?
As water freezes, it expands and its density decreases.
Why can a pin float on water?
Because of cohesion. The weight of the pin pulls it down but the surface tension in the water is holding it up.
What kind of compounds are salts?
ionic compounds
What happens to salt in water?
It dissolves
What is an electrolyte?
A liquid containing free-moving ions which conducts electricity
What is an acid?
Its sour and can dissolve metals, proton donors because they release H+ ions, pH less than 7
What is a base
bitter, slippery, proton acceptors becuase they accept H+ ions, their pH is greater than 7
What does a buffer do?
act to maintain pH stability in the body by binding the extra H+ or OH-
What are the four major molecules of life?
- Carbohydrates
- Lipids
- Proteins
- Nucleic acids