Samples for a compound light microscope are typically prepared on . a.
glass slides
b.
coverslips
c.
a portion
d.
dissecting trays

Depending on the organism the number of in a cell may change

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

There are only about 250,000 known fossil species. true or false