Bio 11 Unit 1

What are the 4 things that all organisms need?

Air Water Space to live Nutrients

What cellular activities require water?

DNA Replication, cell division, protein synthesis, breaking down food, transport nutrients and waste

Why do organisms need nutrients?

to survive, grow, and reproduce

why do plants need nutients?

for cellular processes

what does pace provide for organisms

a location to grow, explore resources, and find energy

what are the 8 characteristics of life

Cells, Homeostasis, Energy, Reporduce, Traits, Grow, Respond, Change

define autotroph

producers (plants and some bacteria)

define heterotroph

consumers (carnivore, herbivore, omnivore)

what is atp

adenosine triphosphate (The energy currency of the cell that powers everything your body does.)

define cell

specialized cells to carry out specific functions

tissues

groups of cells that are simlilar in shape and function

organs

tissues that are organzsed into larger structures that have one fucntion

organ system

groups of organs that hjave related functions

oragism

any living thing

what are the differences between prokaryotes and eukaryotes?

prokarkyotes are simple unicellular organisms and no membrane bound organelles (all prokaryotes are bacteria) and eurkaryotes are compley organisms(most living things) and can be unicellular or multicellular. contain organelles surrounded by membranes

which process is responsible for cell differentiation?

gene expression, which is a process which a gene is switched on or off resulting in different proteins being made.

what are stem cells?

can become any cell in the body because they have not undergone the process of cell differentiation yuet. they can be used to repair damaged organs and cure some diseases. scientists are still studing how to regrow limbs using stem cells.

what are neurons?

long and thin cell that sends info from one part of the body to another

what are red blood cells?

carry oxygen throughout the body

what is a sperm cell?

fertilizes eggcell and strong tail for quick swimming.

formula for photosynthesis

6CO2 + 6H20 + Sunlight —> C6H12O6 + 6O2

formula for cellular respiration

C6H12O6 + 6O2 —> 6CO2 + 6H20 + ATP

snake

bask in sun

kangaroo

powerful legs for jumping

spider

sense vibrations in the ground

monkey

opposable thymbs

leopard

spots to camoflage

elephant

they use their trunk to bathe drink wash and for defense

what is lamar