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final exam-pretest2
| Question | Answer |
|---|---|
| Question #19- Topic: Mutations | -DNA Polymerase is constantly making more DNA for more new cells.-There are multiple sequences for a codon, so sometimes no harm for the person.-Cause no harm is the answer |
| Question #41- Topic: Mutations | -Using different amino acids change the protein, which can bring more diversity within the genes-EX.GTG = GTT-The natural process that produce genetic diversity is the answer |
| Question #11- Topic: Feed back loops | -Negative Feedback:one thing increases another decreases-Positive Feedback:both things increases-There is no thing as anti feedback or reverse feedback. |
| Question #23- Topic:Feed back loops | -Estrogen:a hormone used by the body to create girl traits(very low in males)-Answer is negative feed back |
| Question #15- Topic: Natural Selection | -Diversity is good-If population is diverse than they have a wider possibility of surviving a natural disaster. |
| Questio#28- Topic :Digestive System | -Our digestive track keeps the nutrients from the food and needs to get rid of the waste-Homeostasis-stable |
| Question #59 Topic: Sensory Neurons | -A neuron transmits signals through the nervous system-a neuron is a nerve cell-Sensory neurons involve the 5 senses-from the foot thru the sensory neuron to the brain thru the motor neurons and the the muscle |
| Question #61 Topic: Nerve Impulse Movement | -Think of the neuron as a lite switch. It has an ON and OFF switch- IF OFF and transmit a signal sodium NA must enter the neuron- IF ON and transmit a signal potassium K must exit the neuron |
| Question #10 Topic: Skin | -It serves as a barrier against infection or injury |
| Question #47 Topic:Recombination | -segregation- to separate |
| Question #9 Topic: Mutation | -Change in a DNA sequence-DNA Polymerase is constantly making new DNA structures-Since so much DNA is made, a DNA polymerase makes mistakes-Answer is constantly |
| Question #46 Topic:Succesion | -Repopulation-a rebirth of species after a natural disater-Answer is lichens to grasses to shruds to trees |
| Question #40 Topic:Ecosystem | -Carrying capacity:the largest # of individuals that a given environment can support-The graph has nothing to do with producers or consumers |
| Question #45 Topic:Evolution | -Abiotic:all the nonliving things in an environment-It's the environment that determines who is fit-Answer is abiotic characteristics of the habitat changed |
| Question #14 Topic:Reflex | -Reflexes don't travel all the way to the brain because the response needs to be quick-Answer is reflex arc |
| Question #54 Topic:Immune System | -Skin is not a defense against a specific infection.Antibodies are specificallly made to fight off certain viruses |
| Question #22 Topic:Natural Selection | -Big mouth -reproduce more crocodiles-Some have to survive better than others-Answer is individuals protect the week with in a population |
Created by:
tecolote
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