Biology Exam 1 Flashcards
True or false? Variation among organisms is due to mutations?
True
True or False? A hypothesis is typically stated as an “if…then” statement…
True
A scientific explanation that is conditional and requires more investigation is called?
A hypothesis
A scientific theory is?
A general explanation for natural phenomena.
The smallest units that still retain the characteristics of an element are called?
Atoms
True or False? Prokaryotic cells have a true nucleus and eukaryotic cells do not?
False
The main difference between an autotroph and a heterotroph is?
How they obtain energy.
Fats and oils are made of?
Three fatty acids in one glycerol.
A cell that lacks organelles is a?
Prokaryotic cell
Which type of molecule is most abundant in a typical cell?
Water
Which kingdom business is unicellular animal-like species in unicellular plant-like species?
Protista
A carefully formulated scientific explanation that is based on extensive observations and is in the cord with scientific principles is called a?
Theory
The concept of evolution is based on?
Survival and successful reproduction and organisms with favorable variations.
What organization is the most inclusive/includes the most life forms?
Biosphere
Any organism’s ability to detect stimuli from either the internal or external environment is called?
Responsiveness
Complex, three-dimensional, tertiary structures of proteins result from?
Hydrogen and disulifide bonds
What biological molecules are composed of amnio acid subunits?
Proteins
The four polypeptides that are joined together to make functional hemoglobin represent which level of protein organization?
Quaternary structure
What specialized enzymes catalyze chemical reactions within the body?
Proteins
