Answer the following questions true (T) or false (F)
1. There are fossils of dinosaurs and humans that lived at the same time in the past.
2. The basic units that evolve are species.
3. There can be more than two varieties of alleles for a particular gene in a population.
1. FALSE
2. FALSE
3. TRUE
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The differences in inherited traits among individuals in a population are called _______
A. species variation B. genetic mutations C. genetic variation D. natural selection E. None of these
Lipid enclosed collections of molecules formed the first ________
a. cells b. bacteria c. mitochondria d. fungi e. protocells
When would the human body produce the most lactic acid?
a. after falling into a deep sleep b. after eating a large meal c. during prolonged exercise d. while drinking a glass of milk
A student has isolated a large compound (macromolecule) from cells. Chemical analysis of the compound shows that it is made up of the following elements: carbon, hydrogen, oxygen, nitrogen, and sulfur
To which group of macromolecules does this compound most likely belong? A) carbohydrate B) protein C) nucleic acid D) lipid E) aqueous