Sam and Jenny ride their bikes at a constant velocity of 3 miles per hour.
Explanation:
Here we see that both of them are moving at a constant velocity which means their speed is constant and they are moving in a straight line.
Zero acceleration is implied on the bikes and the net force is BALANCED.
When forces are in balance, acceleration is zero. Velocity is constant and there is no net or unbalanced force.
Answer: • Most prokaryotes lack well-defined organelles. They can move from one place to another using cilia.
• The presence of peptidoglycan in their cell walls allows them to be visible on staining.
Explanation:
A prokaryote lacks a nucleus that's enveloped enclosed. Also, most of them doesn't have well-defined organelles.
The presence of peptidoglycan in their cell walls allows them to be visible on staining and they can move by using cilia.
Plant cells perform photosynthesis, and possess chloroplasts and chlorophyll, while animals do not :)
