Levels Of Organisation Flashcards
What is cell?
Basic living, structural and function unit of life
Difference between eukaryotes and prokaryotes
Prokaryotes - single celled organism
Eukaryotes - multiple celled organism
Zygote develops from what type of cell?
Totipotent cell
What is plasma membrane ?
Membrane surrounding the cytoplasm of a cell
Why is cell membrane called phospholipid bilayer?
Cell membrane is made up of double layer of phospholipids
What is cytoplasm?
Gelatinous material that fills inside the cell to hold the cell organelles
What is called the powerhouse of a cell?
Mitochondria
A diploid human cell contains how many chromosomes ?
46
What is a gene?
Basic physical and functional unit of heredity
What organelle does protein synthesis?
Endoplasmic reticulum
Function of golgi apparatus
Process and package of macromolecules such as proteins and lipids
Function of ribosome ?
Protein synthesis
What enzyme does lysosome hold?
Acid hydrolases
What is catabolism?
Chemical process to breakdown complex molecules to simple substances
What is anabolism?
Process of building simple substances to form complex substances
What is an organ?
Group of tissues performing a specific function
What are the four types of tissues?
Muscle tissue
Nerve tissue
Epithelial tissue
Connective tissue
Why are the types of muscle tissue ?
Skeletal
Smooth
Cardiac
What are the types of nerve tissue
Spinal cord
Brain
Epithelial tissue is mainly found where ?
Skin
Types of connective tissue ?
Loose
Dense
Specialized
Example of loose connective tissue ?
Areolar
Adipose
Example of dense connective tissue ?
Tendon
Ligament
Example of specialized connective tissue
Cartilage
Blood
Types of cell division?
Mitosis
Meiosis
What is mitosis ?
Cell division in which each daughter cell is genetically identical to the parent cell
What is meiosis ?
Cell division in which the number of chromosomes in the daughter cell is reduced by half to haploid gametes
Phases of cell division?
Interphase
Prophase
Metaphase
Telophase
Cytokinesis
What are the levels of organization in an organism?
Cells
Tissues
Organs
Organ system
What are the different organ system?
Skeletal
Muscular
Nervous System
Circulatory
Respiratory
Digestive
Endocrine
Urinary
Reproductive
What is the function of a body cavity?
Space where internal organs are located and protected
What are the two body cavities ?
Dorsal cavity
Ventral cavity
Human body cavity is referred to which cavity ?
Ventral cavity
What are the classifications of dorsal cavity?
Cranial cavity
Vertebral cavity
What is meninges?
Multilayered membrane that protects the brain and spinal cord
What is in the cranial cavity?
Meninges, brain, spinal fluid
Which is the most narrowest body cavity?
Vertebral cavity
What is viscera?
Organs within ventral cavity is called viscera
Ventral cavity is divided by what?
Diaphragm
What are classifications of ventral cavity?
Thoracic cavity
Abdominal cavity
Pelvic cavity
Thymus gland is in which cavity?
Thoracic cavity
Membrane that lines the thoracic cavity?
Mesothelium -
Pleural lining
Pericardium lining
Membrane lining of the abdominopelvic cavity is?
Mesothelium -
Peritoneum
What are retroperitoneal organs??
Organs in the back of the peritoneum
