Chapter 5 Flashcards
(21 cards)
Palisade cells?
plant cells in mesophyll of leaves belowe upper epidermis and cuticle
obsorbtion of light so photosynthesis
Eukaryotic cells?
clearly defined nucleus
liver cell?
-70-85%
-blood glucose regulation
-mineral storage
-protein metabolism
-hormone breakdown
-heat generation
-fat metabolism
-vitamin storage
-bile production
-detoxification
>eukaryotic
cell surface membrane?
- surround cytoplasm
- controlls entry and exit substances (O2,CO2,nutrients) in/out cells
- partially permeable
- maintains constant internal environment in cells
- has receptors for cell recognition
nucleus?
- middle/periphery
- control functions and activities of cells
- produce exact copy when cell divides
- passes on genetic info to new cell
chloroplasts?
- green plants, spread throughout cytoplasm
- site of photosynthesis -> absorb light energy to build glucose and starch from CO2 and H2O
- contain green pigment chlorophyll, traps light energy
Cell wall?
- around cell surface membrane in plant cells
- rigid coating - mechanical support
- gives specific shape
- fully permeable
- prevents bursting during endosmosis
Vacuole?
- numerous small temporary/one large
- stores salts, ions, sugars, waste, pigment in cell sap
- support plant cells, keeps firm
- controls water content of plant cell
Cytoplasm?
- within cell’s membrane
- contains all cell contents
- jelly-like fluid -> site for chemical reactions in cell
- mainly water, enzymes, salts, organelles, various organic molecules
- provides physical structure for cell
Muscle tissue?
- soft tissue composes muscels
- give rise to ability to contract
- cardiac muscle tissue forms bulk of wall of heart
- smooth muscle tissue in walls of hollow internal structures
- skeletal muscle tissue attached bones and powers movement of skeleton
Rough endoplasmic reticulum?
- ribosomes attached to surface -> rough appearance
- transports mRNA from nucleus to ribosomes
- synthsise ribosomes and proteins
- transports proteins to rest of cell
Ribosomes?
site for protein synthesis
Mitochondria?
- site for cellular respiration, relase energy from food
- produce ATP during cell respiration
secretory vesicles?
- produced by Golgi body
- store, transport, digest cellular products and waste
- digestive enzymes: break down/destroy bacteria/unwanted organelles
- contain materials to be excreted from cells
Atoms/mollecules?
chemicals essential manufacturing life
organelles?
many diverse molecules to form complex, highly specialised structure within cells
cellular level?
basic structeral/functional units
Tissue?
group similar cells working together to perform particular function
Organs?
group tissues work together, perform particular function
organ system?
Group organs performing several closely related functions
organism?
complex functioning whole
