Ques:[What requires a microscope in order to be seen?
Options:
- (A) fungi
- (B) cells
- (C) mildew
- (D) gasoline
- (E) fungus
- (F) matter
- (G) telescopes
- (H) sunlight]
Ans:[Cells vary in size as well as shape, but all cells are very small. An embryo is so small that it requires a microscope in order to be seen. A cell requires a microscope in order to be seen.
(B)]

Ques:[Adult urochordates are _-shaped.
Options:
- (A) Length
- (B) a prism
- (C) fossils
- (D) grow
- (E) barrel
- (F) fertile
- (G) Grow well
- (H) revolving]
Ans:[Adult tunicates are barrel-shaped. Urochordates are commonly called tunicates. Adult urochordates are barrel-shaped.
(E)]

Ques:[Where is force on the vessel walls highest?
Options:
- (A) arteries
- (B) feet
- (C) resistance
- (D) tibial vein
- (E) strong
- (F) capillaries
- (G) femoral vein
- (H) Summer]
Ans:[Blood pressure is highest in arteries and lowest in veins. What is Blood Pressure Blood pressure is the pressure on the blood vessel walls. Force on the vessel walls is highest in arteries and lowest in veins.
(A)]

Ques:[Most _ feed on bacteria and algae that use sunlight to make food.
Options:
- (A) Energy
- (B) Lobsters
- (C) Most plants
- (D) Seaweed
- (E) Starfish
- (F) plant life
- (G) Copepods
- (H) energy usage]
Ans:
[Phytoplankton are bacteria and algae that use sunlight to make food. Most copepods feed on phytoplankton. Most copepods feed on bacteria and algae that use sunlight to make food.
(G)]