General Science - Biology Flashcards
Term ‘Biology’ was coined by:
Lamarck & Treviranus
Father of Biology
Aristotle
- also the Father of Zoology
Father of Botany
Theophrastus
Two phases of metabolism
Anabolism [constructive] & catabolism [destructive]
Basic structural and functional unit of all life
Cell
- Cytology: study of cells
First living cell was discovered by:
Leeuwenhoek
Term ‘cell’ was coined by:
Robert Hooke
Cells that lack well-defined nucleus
Prokaryotes
Cells present in unicellular and multicellular plant & animal cells.
Eukaryotes
Largest known cell
Ostrich egg cells
Smallest known cells
Cells of PPLO
Longest animal cell
Human nerve cell
Largest human cell
Female ovum
Smallest human cell
Red blood cell
Fluid present outside the nuclear membrane
Cytoplasm
Fluid present inside the nuclear membrane
Nucleoplasm
Non-living matter of the cell
Deutoplasm
Another term for cell membrane
Plasmalemma
___ discovered mitochondria
R. Altman
Folds in the mitochondria are called ___.
Cristae
Power house of the cell
Mitochondria
- energy stored as ATP
Kitchen of the cell
Chloroplasts
- plastids are present only in plant cells
Who discovered the endoplasmic reticulum?
KR Porter
- rough ER: protein synthesis
- smooth ER: steroid synthesis & detoxification
Site of protein synthesis in the cell
Ribosome
- discovered by GE Palade
Suicidal bags of the cells
Lysosomes
- discovered by de Duve
- converts normal cells to cancer cells
____ pigment present in cell vacuoles gives colour to flowers.
Anthocyanin
Who discovered the nucleus?
Robert Brown
Controlling center of the cell
Chromatin
- forms chromosomes
Bead like structures found on chromosomes are called ___.
Genes
- made of DNA
Who won the Nobel Prize for their discovery of DNA?
James Watson & Francis Crick
Four bases of DNA
Adenine & guanin [purine bases]
Cytosine & thymine [pyrimidine bases]
Ratio of carbon, hydrogen and oxygen in carbohydrates
1:2:1
Examples of monosaccharides
Glucose, ribose, galactose, fructose
How much energy does 1 gm of glucose provide?
4.2 kcal / 17 kJ
Monosaccharide found in fruits & honey
D-fructose
This carbohydrate is also known as invert sugar.
Sucrose
Examples of oligosaccharides
Sucrose, lactose, maltose
Examples of polysaccharides
Cellulose, glycogen, starch
Deficiency of protein causes ___ diseases.
Kwashiorkor [slim legs, bulging stomach]
Marasmus [loose muscles]
This biomolecule prevents heat loss from the body.
Lipids
Vitamins were first discovered by ____.
FG Hopkin
- term coined by C. Funk
Which are the fat-soluble vitamins?
Vitamin A, D, E, K
Which are the water soluble vitamins?
Vitamin B & C
Wernicke-Korsakoff is caused by a deficiency of ____.
Vitamin B