Get college assignment help at uniessay writers 8) Synaptic signaling between adjacent neurons is like hormone signaling in which of the following ways? A) It sends its signal molecules through the blood. B) It sends its signal molecules quite a distance. C) It requires calcium ions. D) It requires binding of a signaling molecule to a receptor. E) It persists over a long period.
What is the purpose of washing the pellet of precipitated DNA in 70% EtOH?
Incompletely Dominant Alleles: An intermediate inheritance in which heterozygous alleles are both expressed, resulting in a combined phenotype. Boxer dogs that are brown with black stripes are referred to as brindle. The brindle gene shows incomplete dominance. The number and darkness of the stripes in brindle boxers is highly variable. Some have so many stripes they look almost black. Some have a medium number of stripes. Others have just a few stripes. You breed a brindle that has many stripes with another brindle that has only a few stripes. What is the phenotype of the litter of puppies (F1)? A. 1:2:1 few stripes: medium stripes: many stripes B. 1:1 few stripes: many stripes C. 100% medium stripes D. 100% many stripes
In a protein complex for the light reaction (a reaction center), energy is transferred from pigment molecule to pigment molecule, to a special chlorophyll a molecule, and eventually to the primary electron acceptor. Why does this occur?
Find one or more articles related to “Cell Biology” and compose a 500-word essay about what you read. You may choose a broad topic as it relates to the overall cell, plant or animal, or you may choose an article related to a specific organelle contained within the cell.
Does belief in the principle of evolution exclude belief in religion? Why or why not? Answer in 200-400 words. Be sure to list your references at the end of your post and be sure that they are in APA citation format.
Questions: 1. What are the benefits of genetic engineering versus the potential risks? 2. What are your personal thoughts on genetic engineering? Do you think genetic engineering provides useful information for the scientific investigation of our natural world or do you think that we should not “mess with Mother Nature”? Explain and support your position.
A water pipe bursts, flooding a Small Business Company utility room and tripping the circuit breakers on a panel in the room. Small Business contacts Tom, a licensed electrocution with five years of experience to check the damage and turn the breakers back on. Without testing for short circuits, which Tom knows he should do, he tries to switch on a breaker. He is electrocuted and sues Small Business for damages, alleging negligence. Small Business may have a successful defense to the negligence claim. it it true or false
what is the potential evolutionary significance of heterospory?
two substances in a glass beaker chemically react, and the glass beaker becomes too hot to touch, if the two substances are defined as the system, what constitutes the surroundings?
Get college assignment help at uniessay writers i understand that dna polymerase sythesises complementary nucleotide strand in 5′ to 3′ direction, why does their have to be a lagging strand, can’t dna polymerase just sythesise the new strand in the opposite direction, starting from the other end, why does it have to be discontinuous?
Some photosynthetic bacteria (e.g., purple sulfur bacteria) have photosystem I but not II, while others (e.g. cyanobacteria) have both PSI and PSII. Which of the following might this observation imply?
muscle cells, when an individual is exercising heavily and when the muscle becomes oxygen deprived, convert pyruvate to lactate. what happens to the lactate in skeletal muscle cells?.
consider the following sentence: “the dog did not eat.”which one of the following variations of this sentence is most like a base substitution mutation? 1. the dog did not eat. 2.the dog dog did not eat 3. the did dog not eat 4. the doe did not eat 5. the dodg did not
Assume that you have a buffered solution containing pyruvatedehydrogenase and all the enzymes of the citric acid cycle but none of the cycle intermediates. 1) if you add 3 micrmoles each of pyruvate, CoASH, NAD , GDP, Pi, how much CO2 is evolved? what are the other products formed? 2) In addition to the reagents in (a) you add 3 micro moles each of the citric acid cycle intermediates. How much CO2 is evolved? explain? C) if you were to add an electron acceptor that reoxidized NADH to the system described in (a), would there be increased CO2 evolution? why or why not? D) Explain the effect on CO2 evolution of adding the NADH-reoxidizing system to the system described in (b).
Your brother has just purchased a new plastic model airplane. He places all the parts on the table in approximately the positions in which they will be located when the model is complete. His actions are analogous to which process in development?
Thermoreceptors come in two basic categories – those that respond to heat and those that respond to cold. Which of the following statements about action potential on sensory nerves originating in a thermoreceptor is correct? (a)decreasing temperature increases the frequency of action potentials from a cold receptor (b)decreasing temperature decreases the amplitude of action potentials from a cold receptor (c)decreasing temperature decreases the frequency of action potentials from both cold and warm receptors (d)decreasing temperature lower both the amplitude and frequency of action potentials from a cold receptor. (e)decreasing temperature affects the frequency of action potentials from cold recceptor but not warm receptors
In any sensory system (sound, light, chemical), the lower limit of detection is often determined by the “background’ noise level” of the sensory system. One could think of this as signals that are generated by the sensory system in the absence of any physical or chemical stimulus. Which of the following respresents this background noise level of sensory inputs to the nervous system? (a)the largest graded potential that will not produce an action potential (b)the smallest amount of neurotransmitter that will cause a detectable change in the post-synaptic membrane potential (c)randomly generated action potentials on a sensory neuron (d)the smallest action potential that can be produced
Whats the difference between prokaryotes and eukaryotes; mode of reproduction, number of chromosomes, and shape of bacterial chromosome?
Fly Lab (#6) Assignments #1 and #2 The following questions are designed to help you become familiar with the operation of Fly Lab by studying the inheritance of traits in frut flies. The purpose of this laboratory is to simulate basic principles of genetic inheritance based on Mendelian genetics, to understand the relationship between phenotype and genotype, and how to construct punnet squares to determine characteristic phenotypic ratios. Follow the instructions in the lab manual and answer the questions below as you work through the FlyLab using the lab manual. Remember to show numerical data in tables or figures using the guidelines provided (“Data Presentation Basics” Powerpoint presentation found in the START HERE FIRST folder under the Lesson’s tab on the Angel website),, to explain the data in simple, clear, concise sentences, and to then answer the questions or draw conclusions using the data. Data always appears in the text in the form of a table or a figure not both as soon after it is mentioned as possible. References are cited in your responses not at the end of the lab report! Insert your responses in the green text boxes below. They will expand as you enter text as needed. Copy and paste figures from the lab simulations as needed into the green response boxes. Use the “Export Feature” of the lab, the select the text or figure using the click, drag, select features of your mouse, type ctrl C to copy to the clipboard, place cursor in destination document and type ctrl V to copy from the clipboard. If the “Export” command in the lab simulations doesn’t work for you turn off “ALL” of your popup blockers! Gene Symbols (Creation and Use) 1. A gene symbol shall consist of a base of one to three letters. Previously published gene symbols will have priority. Additional information can be appended as described below. 2. For cases in which one allele is dominant, the first letter of the base symbol shall be capitalized to designate the dominant allele while all lower case letters will indicate the recessive allele. For example big “A” for the dominant version of the gene and little “a” for the recessive allele. 3. For diploid individuals AA, Aa, aa would be the correct form for the genotype of a homozygous dominant, heterozygous dominant, and homozygous recessive individuals, respectively. Use different letters for different characters. Related Resources Drosophila Virtual Library – comprehensive list of web resources on Drosophila research. http://www2.edc.org/weblabs/WebLabDirectory1.html The genetics web lab directory. There are several great exercises here for your enjoyment. I highly recommend the Punnet Square exercise I can’t provide the link for this but I highly recommend Thinking as a Scientist: How Is the Chi-Square Test Used in Genetic Analysis? (9.23) found on the C
given fitness W11=1.00 W12=1.06 W22=1.04, calculate the total genetic variance at each values of X=0.3 , 0.4 and x=x^* equilibrium value. Indicate , in each case what proportion of the total variation in fitness is available for evolution,what do you conclude?
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