Intro to Biology
What is biology?
The study of life
Which of the following is an example of artificial selection?
A. A genetic mutation that is able to survive better in the environment
B. Dog breeding- breeding certain desired breeds
C. None of these
B.
True or False
protons are negatively charged.
False
True or false
Dehydration synthesis is a reaction when a water molecule is released.
True
An approach to understanding the natural world is...
Science
A map of evolutionary relatedness is
Phylogeny
What number on the periodic table determines how many protons an element has?
Atomic number
What is the second structure level of a protein called?
Secondary structure
Properties that were not present in the preceding level are
Emergent properties
Mutations are random.
True or false
True
What is a polar bond?
An atom with partial charges
At room temperature saturated fats are...
Solid
The scientific explanation of unity and diversity is
Evolution
What characteristic must a scientific hypothesis have?
Must be testable
How many bonds does carbon make?
4
What are the 4 major biomolecules?
1. Carbohydrates
2. Lipids
3. Nucleic acids
4. Proteins
What variable is considered the "experimental variable" in an experiment?
Independent variable
What four things do prokaryote and eukaryotes have in common?
1-Membrane
2-Ribosome(produce protein)
3-Cytoplasm
4-Have DNA
What is the backbone of all molecules?
Carbon
What is a peptide bond?
A bond that links to amino acids through a dehydration reaction.