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Final Review
Semester 2
Question | Answer |
---|---|
What is the most important characteristic of a population to ensure survival during habitat change? | biodiversity |
Think of a castle under attack. What part of the castle is similar to your skin? | the wall |
Identify the two main sources of genetic variation | gene shuffling & mutations |
During the different nutrient cycles biotic is converted to abiotic. What i biotic and abiotic? | biotic: living abiotic: non-living |
What determines all of our traits? | DNA |
Given the following replicated DNA strand, what was the original? TGATGCTAGC | ACTACGACG |
How do lethal alleles remain in a population? | heterozygotes |
Identify the genotypes of the offspring if you cross BB x Bb. | BB and Bb |
If you cross Tt x Tt and the homozygous recessive is lethal, what is the chance of the child dying? | 25% |
Why does a nerve cell have different jobs that a muscle cell? | cell specialization/ different genes expressed |
Place these in the proper order for protein synthesis: mRNA, ribosomes, DNA, tRNA | DNA, mRNA, tRNA, ribosome |
How many strands does DNA possess | 2 |
How much genetic material is provided by each parent? | 50% |
Identify DNA's monomer | nucleotide |
Why does a virus need a host? | can't replicate/reproduce |
Which organelle uses sunlight to produce sugar | choloroplast |
What does an enzyme do to a chemical reaction? | speed up |
Define theory. Can theories be disproven? | a well proven statement, yes |
When you fight a virus, what kind of immunity do you develop | active |
Which direction does a motor neuron travel? | to the body from the brain |
Genetic drift tends to occur in populations that are what size? How does it affect biodiversity? | small, makes less diverse |
Which system coordinates the body's response to changes in its internal and external environment? | nervous system |
According to Darwin's theory of natural selection those that survive are what? | fittest |
Which type of pathogen causes AIDS? | virus |
When an action potential reaches the end of a neuron, it triggers the release of what? | neurotransmitter |
Which two systems are responsible for gas exchange? | respiratory, circulatory |
A DNA molecule produced by combining DNA from different sources is called what? | recombinant DNA |
Beak size of finches on the Galapagos was determined by what? | available food |
Give one example of a non-specific defense againt invading pathogens. | skin, mucu, salive |
Natural selection acts directly on what? | phenotypes |
Oxygen is transported from the lungs to the body by what system? | circulatory |
What are the two parts of the peripheral nervous system? | motor and sensory |
Which division of the nervous system transmits impulses from eh sense organs to the central nervous system? | sensory |
When a person receives a vaccine, what does their body create to fight against that specific pathogen | antibodies |
Which system cleans your blood and removes liquid waste? | excretory |
Give one example of a clone. | Dolly/ bacteria grown in petri dishes |
What process allows the body to maintain a stable temperature? | feeback inhibition |
In the past, mass extinction s encouraged the rapid evolution of survivin species because more of what was available? | niches |
What is a stable environment called? | homeostasis |
Antibiotics fight infection by killing what type of pathogen? | bacteria |
Unlike passive immunity, active immunity antibodies are produced by whom? | yourself |
What are the three parts of a DNA nucleotide? | phosphate, deoxyribose, nitrogen base |
If DNA had CTAGGT, what would the messenger RNA be? | GAUCCA |