Quiz #5 Mr. Betancourt Flashcards
What does the cell theory state?
- all living things are made of 1 or more cells (structure)
- all cells preform “life process” - activities that keep the living cells alive and functioning
- cells come from pre-existing living cells
who were the scientist that contribute to the cell theory?
Robert Hooke Aton van Leeuwenhoek Rudolph Vircow M. scheilden t. schwann
how did the scientists contribute to the cell theory?
→ R.Hooke - observed the walls of dead plant cells (cork) and named the cell
→ A.van Leeuwenhoek - observed living cells moving in a drop of water
→ M.Schleiden - stated that all living plants are made of living cells
→ T.Schwann - stated that all living animals are made of living cells
→ R.Virchow - stated that cells come from pre-existing living cells of same kind
what are the 4 organic compounds?
protein, carbohydrates, nucleic acid, lipids
protein
(made from amino acids)
● building blocks of structure
●enzymes
- ENZYMES
proteins that control the
rates of chemical reactions
CARBOHYDRATES
● provide source of energy
and short term energy
storage
● used for structure
Define inorganic compound…
compound that lacks Carbon,
Hydrogen, & Oxygen combination
NUCLEIC ACIDS
● make up genetic information
- DNA & RNA
● carry hereditary information
LIPIDS
● fats & oils
● long-term storage of energy
● found in cellular structure
organic compounds contain
Carbon,
Hydrogen
& Oxygen
elements.
examples of inorganic compounds
WATER (H2O), SALT (NaCl)
& CARBON DIOXIDE (CO2
amino acids
smaller molecules that make proteins
what are the 5 basic needs
TOWELS, proper temperature, oxygen, water, energy, and a living space
proper
Temperature =
an optimal range of temperature that allows living cells & organisms to function, find food, and reproduce.
homeostasis
process that maintains a balanced internal condition)
Oxygen =
…found in air with other gases and filtered out of water.
…used to release chemical energy stored in food.
Water =
…used by plants to make food
…needed for chemical changes/reaction in cells
…use to transport substances
…inorganic compound essential for life
Energy =
…from sunlight & used to make chemical energy that is stored in food needed to function.
~ AUTOTROPHS (producers) =
use energy in sunlight to make food/nutrients (photosynthesis)
~ HETEROTROPHS (consumers) =
get energy by eating other organisms (food)
Living space
…habitat or environment that provides basic needs/resources (and sometimes shelter)
…limited and competed for
what are the six characteristics of living things
➢HAVE ONE OR MORE CELLS ➢ USE ENERGY AND PRODUCE ORGANIC WASTE ➢ RESPOND TO STIMULI ➢ REPRODUCE OWN KIND ➢ GROW AND DEVELOP ➢ HAVE ADAPTATIONS
HAVE ONE OR MORE CELLS
(organic structure) Cells = the basic units of structure and function in living things (organisms)
➢ USE ENERGY
from sunlight and food to function
➢ RESPOND TO STIMULI
= behaviors - learned or “born with” (innate/instinct) (reaction/ response)
➢ REPRODUCE OWN KIND
(species) ex. a cat produces a kitten that will eventually turn into a cat
➢ GROW and DEVELOP
(increase in # of cells & size)(change/mature)
biotic
living
abiotic
non-living
Spontaneous Generation
…living things (biotic) come from nonliving things (abiotic)
…disproved by Francesco Redi’s rotting meat & flies experiment
…if spontaneous generation was true, flies would be inside the sealed jars with the rotting meat
…disproved by Louis Pasteur’s boiled broth experiment
Biogenesis
…living things (biotic) come from living things (biotic)
…living cells come from pre-existing living cells (Cell Theory)
…living flies arise from the same kind of living flies that lay eggs on the rotting meat by living flies
…microscopic organisms came from microscopic organisms living in air
how did pasture and redi contribute to spotaneous geration and biogenesis
redi: HE SHOWED THAT LIVING MAGGOTS & FLIES DIDN’T COME FROM THE MEAT IN JARS BUT FROM LIVING FLIES THAT LAID EGGS ON THE NONLIVING MEAT IN THE JARS.
pasture: KEPT BOILED BROTH AWAY FROM DUST PARTICLES IN AIR. WHEN IN CONTACTED WITH AIR THE LIVING MICROORGANISMS IN THE AIR DUST GET INTO BROTH AND PRODUCED MORE LIVING MICROORGANISMS
both: DISPROVED SPONTANEOUS GENERATION AND SUPPORTED BIOGENESIS