You try to start your car, but it does not start. Which of these is a prediction?
A) My car's battery is dead.
B) If I recharge the battery, then my car will start.
C) My car is too old to function properly.
D) What is wrong with my car?
B
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Why can plastids, like mitochondria, not live outside of the host cell?
a. They are anaerobic and cannot exist in the oxygen-rich environment outside the cell. b. Outside of the cell, they cannot defend themselves and are quickly destroyed by predators. c. Both of these organelles have given up many of their necessary genes to the nucleus of the host cell and cannot function without them. d. They cannot harvest energy or store energy and need the cell for these functions.
How many daughter cells are produced in meiosis?
a. 0 b. 1 c. 2 d. 4
There are exceptions to the general rule that amphibians lay eggs that develop in the water. These exceptions showed extreme variation but they do have one thing in common. What is it?
A. They all develop in some sort of pouch. B. They all develop in desert environments. C. They all develop in habitats with adequate humidity. D. They all develop in a camouflaged environment. E. They all develop more slowly than eggs developed in water.
Where would you find a cellular slime mold?
a. on the forest floor c. in an animal gut b. in a tropical sea d. in a mountain lake