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Biology
True or false homologous chromosomes are genetically identical to each other.
The ________ are structures mainly involved in orienting an organism in its environment.
In an effort to bring mean arterial pressure back to normal after a hemorrhage, total peripheral resistance ________ because the blood flow to most organs ________. however, blood flow to the ________ and ________ is maintained because these organs are not greatly influenced by the baroreceptor reflex.
In nucleotide excision repair, damaged dna is excised by what enzyme(s)? in nucleotide excision repair, damaged dna is excised by what enzyme(s)? ligase nuclease dna polymerases primase helicase
Why do farmers apply nitrogen to their fields in the spring and fall?
What two muscles on your muscle list aid in mastication?
The presence of freckles is due to a dominant allele. Four percent of individuals in a population do not have freckles. Use the Hardy-Weinberg principle to calculate the percentage of individuals in this population who are homozygous dominant for freckles.
Which is a role of photosystem 1 in the light reactions?
Climate in a given region can be considered an average of that region's daily weather. true or false
When an action potential arrives at the presynaptic membrane, depolarization occurs, opening voltage-gated channels. this allows an influx of ca2+ ions that are needed to trigger the release of neurotransmitter into the synapse. if a calcium channel blocker, such as cadmium, is injected into the presynaptic cell, which explanation best describes cadmium's effect on the transmission of the impulse?
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