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What happens if you forget to take your antibiotic pills the complete cycle?
a) Non of the bacteria died, so there are many more.
b) The bacteria that were not killed may have genes that make them resistant.
c) The doctor didn't know which antibiotic to use, because it was unknown species.
d) Antibiotic caused mutations in the bacteria and made it more dangerous.
Which cellular organelle allows water and nutrients to move in and out of the cell?
a) Nucleus
b) Mitochondria
c) Cell Membrane
d) Golgibodi
The lymphatic system contains lymph nodes. What is their function?
a) To absorb nutrients from food.
b) Support the body's movement.
c) Filter pathogens from the body.
d) Remove toxic substances from the blood.
Which process is NOT responsible for increasing variation in a population of organisms?
a) Mutations can add new genes that can be helpful or harmful.
b) Crossing over during meiosis, mixes up genes in the cells.
c) Sexual reproduction combines genes from two individuals.
d) Mitosis that produces cells that are genetically identical.
Whick example demonstrates a genetic trait that is the result of actions by humans?
a) An animal growing thick fur for warmth.
b) Migration of animals to a new area for food.
c) Cows making more milk due to selective breeding.
d) An increase in mosquitos due to increase in precipitation.
A person lifts a cup off of a table. What happens to the potential energy of the cup.
a) The PE increases as the cup is raised because the Gravitational PE increases with height.
b) Potential energy is converted to stored energy.
c) It is converted to kenetic energy.
d) The potential energy is lost and cannot be found.
5g of sugar dissolves in 10g of water. After the water evaporates, what is the weight of the sugar left over?
a) 5g
b) 4g
c) 15g
d) 10g
When cold dry air collides with warm moist air, the result is?
a) The cold air mass is more dense, therefore sinks.
b) The warm air mass is less dense, therefore rises.
c) The moisture is condensed as the air mass rises and begins to cool.
d) All of the above
Which is the best explaination of how a sea breeze moves over land
a) Land warms faster than water, so warm rising air over land is replaced by the cooler air for the ocean
b) Dense air rises up over the warm land where it is replaced by the the air from the ocean
c) There is lower pressure over the ocean and air always moves from low to high pressure
d) Water warms faster than land, so cool air over th ocean is replaced by warmer air from land
Which of the following best describes an independent variable?
a) the outcome of the experiment, for example how tall a plant gets, or how far something moves
b) the item being experimented with, example: amount of water, light, or the force applied
c) all the things that stay the same in the experiment, example: the room, the surface, the soil
d) none of the above
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