What is the correct order of geological time
frames from oldest to most recent?
a. Cambrian ? Silurian ? Permian ?
Cretaceous
b. Cambrian ? Permian ? Silurian ?
Cretaceous
c. Cretaceous ? Silurian ? Permian ?
Cambrian
d. Cretaceous ? Permian ? Silurian ?
Cambrian
e. Permian ? Cretaceous ? Cambrian ?
Silurian
A
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The vascular cylinder of a root consists of ________
a. endodermis b. root apical meristem and the root cap c. cortex and pith d. primary xylem and phloem
Answer the following statements true (T) or false (F)
1. Kingdom is the highest level in the taxonomic hierarchy. 2. This statement is false. Domain is the highest level in the taxonomic hierarchy. 3. Cholesterol is a hormone synthesized in the liver. 4. A light microscope allows biologists to see a cell’s distinct internal structures. 5. Both eukaryotic cells and prokaryotic cells have a plasma membrane.
When a cell is placed in a hypotonic environment, the cell will usually undergo:
a. cytolysis b. plasmolysis c. experience a decrease in turgor pressure d. be at equilibrium
Which blood type is the universal donor?
a. A b. B c. AB d. O e. none of these