ch2 Flashcards
functions of water (5)
- reactant
- medium for chemical reactions
- cooling agent
- medium for transport
- provides support
inorganic ions (4)
- nitrate
- magnesium
- calcium (phosphate)
- iron
nitrate
sources of ___
synthesis of ____
- source of nitrogen
- synthesis of proteins
magnesium
component of ___
activates ____
chlorophyll
some enzymes
calcium
main component of ___ and ___
required in 3 processes:
bones and teeth
muscle contraction, sending messages to nervous system, blood clotting
iron
component of ___
activates ___
haemoglobin
some enzymes
biomolecules
Which 4?
carbohydrates, lipids, proteins, nucleic acids
carbohydrates
which 3 common types and their functions
glucose- releases energy in animals
starch- energy reserves for plants
cellulose- component of cell walls
Lipids
2 common kinds and their functions
triglycerides- energy reserve, reduce heat loss, shock absorber, protects internal organs
phospholipids- component of cell membranes
proteins
makes up ___
___ and ___ are proteins
body tissues
enzymes and antibodies
Nucleic acids
which 2 and functions
Deoxyribonucleic acid- stores genetic information
ribonucleic acid- synthesis of proteins
cell membrane 2
- differentially permeable
- controls movement of substances in and out of cell
cytoplasm
4 points
- jelly-like fluid consisting water and proteins
- holds many organelles
- site for chemical reactions
- transport and movements in cell
nucleus
2 points
- double membrane ( called nuclear membrane)
- cotains DNA, controls activity in cell
Mitochondrion
3 points
- double membrane
- energy releasing stage of respiration
- require a lot of energy
Rough Endoplasmic Reticulum
3
- ribosomes
- synthesis of proteins
- produces hormones or enzymes
Smooth endoplasmic reticulum
3
- no ribosomes
- synthesis of lipids
- produce lipid hormones
vacuole
contains ___
water and dissolved substances
cell wall
made up of ___
1 point and function
cellulose
fully permeable
protects, support and gives shape to plant cell
large central vacuole
filled with a fluid called ___
contains ___
when its full of water, the cell becomes ___
this provides ___ to the plant
cell sap
water and dissolved substances ( glucose, pigments, waste)
turgid
support
chloroplast
green pigment called __
function
chlorophyll
double membrane
absorbs light energy for photosynthesis
double membranes which three cells
nucleus, chlorophyll, mitochondrion
