topic 1

regents bio

active transport

movement of materials across the membrane using atp

amino acids

building blocks of protein

cell

the basic unit of structure and function in all living things

cell membrane

controls what enters and leaves the cell

diffusion

movement of molecules from high to low concentration

cell respiration

breaks down nutrients to produce energy

chloroplast

where photosyntheis occurs

cytoplasm

jelly like substance

digestion

breaking down large food into smaller pieces

enzyme

speed up chemical reactions

excretion

removal of metabolic waste

homeostasis

stability of your body

hormone

a chemical messenger

immunity

the body’s ability to identify and destroy pathogens

inorganic

molecules without carbon and hydrogen

reproduction

organisms produce more of their own kind

metabolism

all chemical reactions that occur within the cells

mitochondria

where cellular respiration occurs

nucleus

contains DNA and controls cell activities

organ system

a group of organs working together

organelle

a specialized structure within a cell

organic

molecules that obtain carbon and hydrogen

respiration

release energy from food

ribosomes

makes proteins

simple sugars

building blocks of carbohydrates

synthesis

building larger complex molecules

tissue

a group of similar cells working together

vacuole

a storage sac