stuff Flashcards
what are the 8 characteristics of life
cells
DNA
reproduce
grow/develop
respond to their environment
homeostasis (maintain a stable internal environment)
evolve, as a group
obtain and use materials and energy
what are the molecular levels of organization
smallest:
atom
compound/molecules
macromolecule
organelle
cell
:largest
define inorganic molecules:
compounds that do not contain carbon with hydrogen
define organic molecules:
compounds that contain carbon with hydrogen
what is the function of the nucleic acid (DNA, RNA, ATP)
- DNA stores and transmits hereditary info
- RNA is DNA’s helper in building proteins that determine traits
- atp captures and transfers chemical energy
what are the four organic macromolecules
- nucleic acids
- lipids
- carbohydrates
- proteins
what is the function of protiens
structural support
what is the function of lipids
moving and storing energy
what’s a hydrogen bond
when positive hydrogen bonds with negative oxygen
what is adhesion in terms of water
water can stick to surfaces other than water
what is cohesion in terms of water
water sticks closely to water, allowing our body to transport things
what does high heat capacity mean
water does not change states easily to help maintain homestasis
what does less dense as a solid mean
ice floats on water because ice is less dense than water, ice forms from the top down
what organelle looks like a clam and what does it do
the nucleus contains DNA and regulates genes
what looks like a purple mattress and what does it do
the cell membrane surrounds and protects the cell
what looks like a carriage and what does it do
the chloroplast does photosynthesis
what looks like half a bean and what does it do
the mitochondria converts nutrients into energy
what structure is small and synthesizes proteins
ribosome
what sac is filled with digestive chemicals
ER
what stack of membranes packages chemicals
golgi apparatus
what does the vesicle do
passageway where chemicals are made
what does the cytoskeleton
tubules and filaments that give the cell its shape
what is the lysosome
package created by the golgi
