BIO 101 Exam 1
Terms in this set (26)
The first forms of life on Earth were ________.
A suggested and testable explanation for an event is called
The type of logical thinking that uses related observations to arrive at a general conclusion is called
The process of_________ helps to ensure that a scientist's research is original, significant, logical, and thorough
The smallest unit of biological structure that meets the functional requirements of "living" is the _____.
Viruses are not considered living organisms because they
are not made of cells
The presence of a membrane-enclosed nucleus is a characteristic of
What is the sequence of hierarchy of biological organization from the most inclusive to the least complex level?
biosphere, ecosystem, community, population, organism
Where in a phylogenetic tree would you expect to find the organism that had evolved most recently?
at the branch tips
A group of individuals of the same species living in the same area is called a(n) ____________.
If xenon has an atomic number of 54 and a mass number of 108, how many neutrons does it have?
Atoms that vary in the number of neutrons found in their nuclei are called ________.
Potassium has an atomic number of 19. What is its electron configuration?
shells 1, 2, and 3 are full and 4 has one electron
When acids are added to a solution, the pH should
A molecule that binds up excess hydrogen ions in a solution is called a
Each carbon molecule can bond with as many as________ other atom(s) or molecule(s).
What type of bond represents a weak chemical bond?
During the breakdown of polymers, what reaction takes place?
Cellulose and starch are examples of
Plant cell walls contain what in abundance?
Lactose is a disaccharide formed by the formation of a ________ bond between glucose and ________.
Phospholipids are important components of
the plasma membrane of cells
The monomers that make up proteins are called
The α helix and the β-pleated sheet are part of which protein structure?
A nucleotide of DNA may contain
deoxyribose, thymine, and a phosphate group
The building blocks of nucleic acids are
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