Bio & Chem Review Flashcards
Ionic bond
One or more electrons are lost from a metal and gained by a non-metal
Covalent bond
Electrons are shared between non-metals
Define biology
Biology is the study of life
What are the 7 characteristics of life?
- Life is cellular
- Responds to stimuli
- Reproduction
- Adaptation
- Growth and development
- Regulation
- Metabolizes energy
All living organisms are composed of __________
Cells
Define stimulus
Is any physical or chemical change. Ex: Heat, light, chemicals, sound, pressure, etc.
Define response
Is a change in the processes and patterns of an organism. Ex: Movement, metabolic, chemical, etc.
The types of reproduction
Sexual and Asexual reproduction
The types of cellular division
Meiosis and mitosis
Whats the difference between sexual and asexual reproduction? Hint: answer is focused on offspring
sexual reproduction is the fusion of unique gametes which creates unique offspring and asexual reproduction is cloning which produces identical offspring
Are viruses alive?
No they do not have cells, they cannot stay in a stable state, cannot make their own energy, cannot grow and need a host.
Define adaptation
Individuals that are better suited to their environment will thrive while those that are not will die
Whats natural selection?
Populations that adapt to their environment over many generations
Define growth and development
Life in creases in size and change form over time
Define regulation
All life having a limited range of environmental conditions in which it can survive
