Week 2: Structure and Function of Cells Flashcards
Characteristics associated with life
- Order
- Exchange materials with their environment
- Synthesis of complex molecules
- Reproduction
- Responds to Environment
- Cellular
Cells
Basic unit of structure and function in living things
Tissues
Made up of cells similar in structure and function.
Work together for common goal
4 Basic Human Tissues
- Connective
- Epithelial
- Muscle
- Nerve
Organs
2 or more tissues that work together
Organ Systems
Groups of organs that work together
11 Human Organ Systems
- Digestive
- Endocrine
- Excretory
- Immune
- Integumentary
- Muscular
- Nervous
- Reproductive
- Respiratory
- Skeletal
- Circulatory
Organisms
Living things that carry out basic life processes.
Plasma Membrane
Flexible outer boundary
Proteins, lipids, carbohydrates
Selective barrier
Cytoplasm
Intracellular fluid containing organelles.
Nucleus
Control center
Endoplasmic Reticulum (ER)
Continuous with nucleus
Rough and Smooth
Rough ER
Ribosomes
Protein synthesis & transport
Smooth ER
Lipid synthesis and transport
Drug detoxification
Ribosomes
Free and bound
No membrane
Synthesize proteins
Golgi Apparatus
Sorting/shipping center
Proteins modified then sent to specific places
Protein from rough ER to Golgi via vesicles
Vesicles (Vacuoles)
Membrane-bound sacs
Storage, import, export.
Lysosomes
Small sacs w single membrane
Has enzymes that breakdown bacteria and old organelles
Auto-lyse (destruction of cell)
Mitochondria
Double membrane organelle
Make ATP (energy)
Folding for more surface area
Contains ribosomes
Nucleus
Nucleolus (forms ribosomes)
Nuclear pores (lets things in and out)
Contains chromatin
Chromatin
Structure of DNA wrapped around protein
Chromosome
Decompressed DNA in X structure
Metabolism
All chemical processes that occur in the cell
Balance
Anabolic Reactions
Building
Require energy
Catabolic Reactions
Breaking down
Release energy
Endergonic
Anabolic
Exergonic
Catabolic
For tissues to form:
Cell division and growth
Cellular specialization
Cell Differentiation/Specialization
Cells develop along different path - diff genes activate at diff times
Form fits function
Efficiency
Nerve Cell
Communication
Long with lots of branches - reach far and many.
Muscles Cell (Function and Form)
Movement
Elongated for maximum amount of movement.
Red Blood Cell (Name, Form, Function)
Erythrocyte
Carry oxygen
No nucleus - more space/doesn’t use oxygen
Flattened - more surface area.
White Blood Cell
Leukocytes
Fight infections