Week 3 Flashcards
(25 cards)
what is catabolism?
breakdown of larger molecules into smaller ones. RELEASES ENERGY
Egs of catabolism
glycolysis, Krebs cycle, food digestion
what is anabolism?
use of simple molecules to create larger ones. CONSUMES ENERGY
Egs of anabolism
proteins made from amino acids
glycolysis
- breakdown of glucose into 2 pyruvate molecules, 2 ATP, 2 NADH.
- ANAEROBIC
- OCCURS IN CYTOPLASM
Krebs cycle
- further breakdown of pyruvate molecules into 2 ATP, 4 CO2, 6 NADH, 2 FADH.
- NADH + FADH donate electrons to electron transport chain
- AEROBIC
- OCCURS IN MITOCHONDRIA
electron transport chain
- electrons’ power produces 26-28 ATP + water
- AEROBIC
- INNER MEMBRANE OF MITOCHONDRIA
4 types of tissues
- epithelial
- connective
- muscle
- nervous
epithelial tissue functions
protection, absorption, lining covering etc
connective tissue function
support and bind other tissues
muscle tissue function
specialised for contraction
nervous tissue function
communication within the body
types of nervous tissue
- neurons
- neuroglia
types of muscle tissue
- skeletal
- smooth
- cardiac
characteristics of skeletal muscle tissue
striated, voluntary
characteristics of smooth muscle tissue
non-striated, involuntary
characteristics of cardiac muscle tissue
striated, involuntary
what is connective tissue made from?
large matrix of non-cellular material
membrane
physical barriers that line parts of the body
homeostasis
constant state of balance/ equilibrium that keeps the body alive
feedback system steps
- controlled condition
- stimulus
- receptor
- control centre
- effector
- response
negative feedback response
response that reverses the initial stimulus change
positive feedback response
response that enhances the change in stimulus
EG of negative feeback response
thermoregulation, BGLs etc
