What is biology?
The study or science of living things.
Define homeostasis.
The body's ability to maintain a constant internal environment
... [Show More] despite changes that occur in the external environment.
Brainpower
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This system is used for classification, description, and naming.
Taxonomy system.
How many classification levels are there in the classical Linnaean system?
7.
List the 7 taxonomic levels from least specific to most specific.
1. Kingdom.
2. Phylum.
3. Class.
4. Order.
5. Family.
6. Genus.
7. Species.
T/F: The classification system is based on physical similarities across living things. It does not account for molecular or genetic similarities.
True.
Who was the classification system created by?
Carl Linnaeus.
The 7 steps of the scientific method.
1. State the problem. The question created because of an observation.
2. Research reliable information about what is observed.
3. Hypothesis. State a predicted solution to the question or problem.
4. Experiment. A series of tests used to evaluate the hypothesis. Experiments consists of an independent variable that the researcher modifies and a dependent variable that changes due to the independent variable. There is also a control group.
5. Observe. Analyze data collected during an experiment to observe patterns.
6. Conclusion. State whether the hypothesis is rejected or accepted and summarize all results.
7. Communicate. Report findings so others can replicate and verify the results.
What is a law?
A rule that describes patterns observed in nature.
What is a scientific theory?
The explanation of the how and why of things that happens in nature through observations and experiments.
in a study a researcher describes what has happened to a plant being exposed to a dry and hot environment. What step of the scientific method does this most likely describe?
Making an observation.
Properties of water.
Polar.
Oxygen atom is slightly negatively charged.
Both hydrogen atoms are slightly positively charged.
A single water molecule forms _________________ with nearby water molecules.
hydrogen bonds
T/F: Water is a universal solvent.
True.
Biological molecules (biomolecules) are organic molecules found in living things and are grouped into these 4 major classes.
1. proteins.
2. carbohydrates.
3. lipids.
4. nucleic acids.
What are monomers?
Monomers are molecules that covalently bond to form larger molecules or polymers.
Building block of polymers.
Biomolecule: Protein
1. monomer(s)?
2. function?
3. example?
1. amino acid.
2. a substance that provides the overall basic structure and function for a cell.
3. enzymes.
Biomolecule: Carbohydrate
1. monomer(s)?
2. function?
3. example?
1. monosaccharides.
2. a form of storage for energy.
3. glucose, cellulose, starch, disaccharides. [Show Less]