The Study of Life 1.1 Flashcards
What is Evolution?
Process of change that has transformed life on Earth
What are the 5 Themes of Biology?
- Organization
- Information
- Energy & Matter
- Interactions
- Evolution
What is life?
Things that living organisms do
What is Biology?
The scientific study of life
Reductionism
Reduction of complex systems to simpler components that are more manageable to study
Systems Biology
Analysis of the interactions among the parts of a biological system
Correct Order (Small-Large)
Molecules, organism, population, communities, biosphere
Emergent Properties
Result from the arrangement and interaction of parts within a system
What is the lowest level of organization that can perform all activities?
Cell
What does the membrane do?
Regulates the passage of materials between the cell and its environment
Prokaryotic Cell
Small, simple; does not contain a nucleus or other membrane-enclosed organelles
Eukaryotic Cell
Membrane-enclosed organelles, largest of which is usually the nucleus
DNA- Deoxyribonucleic Acid
Within cells, located in chromosomes that contain genetic material
DNA Molecule Components
2 Long chains arranged in a double helix
Components of each chain
4 Kinds of chemical building blocks called nucleotides & nicknamed A, G, C, and T.
Where is energy lost to?
Surroundings as heat
Result of lost energy
Energy flows through an ecosystem, usually entering as light and exiting as heat
Like jackrabbits, elephants have many blood vessels in their ears that help them to cool their bodies by radiating heat. Which of the following statements about this radiated energy would be accurate?
a) The original source of the energy was the sun.
b) The energy will be recycled through the ecosystems.
c) The radiated energy will be trappled by predators of the elephants.
d) More energy is radiated in cold conditions than in hot conditions.
e) More energy is radiated at night than during the day
. Like jackrabbits, elephants have many blood vessels in their ears that help them to cool their bodies by radiating heat. Which of the following statements about this radiated energy would be accurate?
a) The original source of the energy was the sun. ***
b) The energy will be recycled through the ecosystems.
c) The radiated energy will be trappled by predators of the elephants.
d) More energy is radiated in cold conditions than in hot conditions.
e) More energy is radiated at night than during the day
Gene Expression
Process of converting information from gene to cellular product
Feedback
Way that cells are able to coordinate various chemical pathways
Feedback Regulation
Output, or product of a process, regulates that very process
