Flashcards
Science Test- Biology
Flashcards do conjunto (15)
- 1What is Bio mimicry?Is Innovation within nature, mimicking nature to make our lives better
- 2What is NanotechnologyIs the branch of tech that deals with dimensions and tolerances of less than 100 nanometres, especially the manipulation of singular atoms and molecules
- 3What is Bio luminescence?Is the biochemical output of light by living organisms
- 4What is Desalination?The removal of salt from water
- 5What is the difference between a plant cell and an animal cell?A plant cell has a cell wall to protect the cell where as an animal cell doesn't
- 6What is a eukaryotic cell?Is any organism whose cells have a nucleus and other organelles enclosed within membranes
- 7What is a prokaryotic cell?are unicellular organisms which don't have a nucleus
- 8What is a stem cell?Are cells that can become different types of specialized cells
- 9What is diffusion?Is the spread of gas particles or any other substance in a solution, resulting in a net movement from a region
- 10What is osmosis?Is the diffusion of liquid molecules from an area of high concentration to an area of low concentration, across a partially permeable membrane
- 11How is magnification calculated?Magnification = measured size/actual size
- 12How is actual size calculated?Actual size = measured size/magnification
- 13A plant cell in a photograph measures 15 mm across. If the actual size of the cell is 0.015 mm, what is the magnification in the photograph?magnification = Measured size/actual size
=15mm/0.015 = Magnification = x1000 - 14The nucleus in a photograph of a cell measures 3 mm across. If the magnification in the photograph is × 500, what is the actual size of the nucleus?Actual size = measured size/magnification
= 3mm/500 =Magnification = 0.006 - 15What is Mitosis?Is a type of cell division that results in two daughter cells having the same number and kind of chromosomes as the parent nucleus