Answer:
has no nucleus; found in unicellular organisms
Explanation:
Prokaryotic cells are primitive cells found in lower organisms. Prokaryotic cells do not have a true cell.
- A true nucleus lacks an envelope which contains the nuclear materials.
- Most of the organelles lacks membrane bound organelles.
- The true nucleus is lacking in prokaryotes.
Eukaryotic cells have true nucleus.
Answer:
0.7593 seconds
Explanation:
A student waiting at a stoplight notices that her turn signal, which has a period of 0.80 s, makes one blink exactly in sync with the turn signal of the car in front of her. The blinker of the car ahead then starts to get ahead, but 14 s later the two are exactly in sync again. What is the period of the blinker of the other car?
Speed:
If a car is moving on a track and car covers x meter distance in y second time. Now the car driver want to know the distance covered by the car in unit time. So the distance covered in unit time will be calculated by dividing x meters by y seconds. This quantity is known as the speed.
Given:
The period of the blinker of the student car is t1 = 0.80
The period after which both blinks sync is t2 = 15seconds
Let the period of the blinker of the other car be t2
The blinker of the student car is 1 second and can be calculated as:
Student car blink/ sec = 1/0.80
The blink of the other car is in 1 second and can be calculated as:
Other car blink/sec = 1/t2
According to the condition,
Other car blink/sec - students car blink /sec = 1/15
1/t2 - 1/0.80 = 1/15
1/t2 = 1/15 - 1/0.80
t2 = 0.7593
t2 = 0.7593second
Answer: Radio waves, Microwaves infrared, optical ultraviolet, X-rays and gamma-rays
The ovum, plural ovae (latin) produced in the female bodies of mammals ovaries are the female sex cells.
The sperm are the male sex cells. Produced in the testes.
When sperm and ovum meet, there is a chance that they could join together and thus start a new life. Process is called fertilisation
A. Without doing much math, it can be seen from the graph that the altitude is decreasing. The slope of the position time graph determines velocity, so by comparing the start to the end of the graph, it can be seen that -100m was the change in altitude and 25 seconds was the change in time. Divide -100 by 25 to get -4m/s.
