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Explanation and Application of Concepts:
1. Explain why a sea star that lives in the ocean (3.5 % salt) would not survive long if you took it home and put it in a bathtub filled with tap water (0.0 % salt).
2. During digestion, nutrients are absorbed across the wall of the small intestine into your blood stream. Explain why the long length (20 ft.) and numerous finger-like projections along the internal surface of the small intestine serve to optimize this important functions.
3. Just as you go to grab a head of lettuce at the local grocery store, the automatic misting system most large grocery chains have installed comes on. What are they spraying on the lettuce and why?
4. In the movie, Evolution, a giant "blob" - like organism consisting of a single cell grows to huge proportions (as big as a mountain). Although its plasma membrane is strong enough to contain its mass, based on what you learned today about factors affecting the rate of transport, could such a huge creature made up of only a single cell exist?Why or why not?
Translation: During protein synthesis at theribosome, the base sequence of the mRNA codons is translated to theamino acid sequence of a protein. Using the mRNA that you transcribedabove, use the genetic code table to determine the resulting aminoaci..
Explain in detail about Lipids?
Most cellular activities involve converting energy form one form to another. For each of the following cases, give a biological example and explain the significance of the conversion.
What is the name of the class of enzymes that catalyze the binding of specific amino acids to the proper tRNA? What would happen to the proteins in a cell if there was a mutation in the gene for that enzyme such that it no longer specifically recog..
The objective of this exercise was to train you in determining protein concentration in different extracts from biological samples. The protein concentration in a particular sample is used to standardize the activity of a protein such as an enzyme..
The data below was gathered in the Animal Behaviour lab. In this case, 5 zebra danios were placed in a container in compartment A of the aquarium and 5 goldfish were placed in a container in section C of the aquarium. The test fish, in this set of..
Calculate mean, standard deviation, and variance of the systolic and diastolic blood pressure measurements using the formulas provided in the course text. In your write-up, show the formulas you use to calculate each statistic.
A patient has blood with a pH of 7.35. Predict the direction of PCO2, for a condition which is consistent with respiratory acidosis. What compensation acts to restore pH to near the value of pH 7.4?
What is the expected equilibrium frequency of a lethal recessive mutation that has a mutation rate of 0.00001?
In watermelons, the genes for green color and for short shape are dominant over their alleles for striped color and for long shape. Suppose a plant with long striped fruit is crossed with a plant that is heterozygous for both of these characters.
In a population where only the total number of individuals with the dominant phenotype is known, how can you calculate the percentage of carriers and homozygous recessives?
You learned that trade-offs among life history traits are commonly observed in nature. Remember that trade-offs arise when a change in one trait that leads to an increase in fitness is counter-balanced by change in another trait that leads to a de..
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