Download Studying Life

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Biotechnology wikipedia, lookup

Synthetic biology wikipedia, lookup

Vectors in gene therapy wikipedia, lookup

Polyclonal B cell response wikipedia, lookup

Artificial cell wikipedia, lookup

Cell-penetrating peptide wikipedia, lookup

Regeneration in humans wikipedia, lookup

Cell growth wikipedia, lookup

Cellular differentiation wikipedia, lookup

Neuronal lineage marker wikipedia, lookup

Cell culture wikipedia, lookup

Adoptive cell transfer wikipedia, lookup

Microbial cooperation wikipedia, lookup

Evolution of metal ions in biological systems wikipedia, lookup

State switching wikipedia, lookup

Organ-on-a-chip wikipedia, lookup

Cell (biology) wikipedia, lookup

History of biology wikipedia, lookup

Cell theory wikipedia, lookup

Life wikipedia, lookup

Developmental biology wikipedia, lookup

Biology wikipedia, lookup

Transcript
Studying Life
• After the lesson we will be able to identify the major branches
of biology and identify some of the basic tools that biologists
use to study biological organisms.
Studying Life
• Biology is the study of life!
– Sub specialties could include botany, paleontology,
marine biology, …All are biologists
• Sub-Specialties
–
–
–
–
–
–
Cell biologist
Molecular biologist
Conservation biologist
Bioinformatics
microbiologist
Biochemists…
• Each system is part of a larger system.
Systems
– Atoms make up Molecules
– Molecules make up Cells (basic unit of life) Approach to
– Cells make up Tissues (a group of cells serving
a particular purpose)
Biology
– Tissues make up organs (group of organs
working together)
– Organs make up the organism (multi-cellular)
– A group of similar organisms make up a
population (of the same species… can
reproduce)
– Groups of populations make up a community
(interacting or affecting each other)
– The community and its non-living surrounding
make up the ecosystem
– All living things on the Earth form the
biosphere
Properties of Living Organisms
– All living things MUST be able to
reproduce and produce (convert)
energy!
• They all share these other 3
characteristics to varying degrees
– Cell is the basic unit of life
– Genetic code is conserved (same)
between species
– Respond to environment
» Maintain homeostasis or maintain
a stable internal environment
» Exhibit Evolution or change over
time
• Microscopes… study
objects too small to be
seen with the “naked”
eye
– Light Microscope… uses
lenses and light
(photons) to view object
• Can see objects as small
as bacteria
Studying
Biology
– Electron Microscope…
coats object with a
reflective (metallic)
surface to bounce
electrons off of it
producing a 3D image
• Can see cell surfaces and
organelles
• Resolving power 0.2mm
(organelles, viruses,…)
– SEM (scanning electron
microscope) allows the
scientist see 3D structures
– TEM (transmission) allows
the scientist to see internal
structures
– Cell culture… creating a cell line
from an individual cell for study
• Used in biotechnology for the
development and testing of biologics
– Cell fractionation… splitting cells to
study the contents
• Cell digestion using enzymes
• Broken cells are spun in a centrifuge to
separate parts based on mass
• Used in biotechnology in the
purification and validation process
Studying
Biology