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1. Surface tension is a force that holds the surface of a fluid together. It results from the cohesiveness of the liquid molecules. Explain what makes water molecules cohesive.
2. What characteristic(s) does a substance need to possess in order to be hydrophilic?
3. Explain why a column of water moved up the inside of the glass capillary tube in this exercise.
4. Explain why water behaved differently in the plastic capillary tube compared to the glass tube.
5.
a. Hand draw a line graph (no computer graphics!!) of the class average data that was collected in section III.B of today's lab. The x-axis should be the number of drops of detergent and the y-axis should be the distance between the top of the water in the test tube and the top of the water in the capillary tube. Your graph must be neatly drawn and your data points clearly marked with an appropriate symbol (a large dot, square, triangle, etc.). Use a straightedge to connect the data points together. Clearly label the axes of your graph and give the graph an appropriate title. Attach it to this sheet when turning in your assignment.
b. Explain why the detergent had the effect it did on the height of the water column.
By Punnett square show the offspring's of one homozygous dominant individual and one homozygous recessive individual. By Punnett square show the incomplete dominance of a true breed red flower with a true breed white flower. Completely explain.
What kind of microorganism is selected for on the SAB plate and the 3M Petrifilm?
Enzymes greatly decrease the activation energy. Describe two of the ways they do this and be specific in terms of chemical mechanisms.
Do any of your suspect samples appear to have EcoRI or Pstl recognition sites at the same location as the DNA from the crime scene? If so which suspects and what are the band lengths (bp) that match?
What were the components of the pectoral girdle in early fishes and how has it changed in tetrapods? Specifically, what is the typical fate of the coracoids and clavicle in the tetrapod girdle?
Describe the specific structural elements and factors involved in the synthesis of a transmembrane protein in contrast to a cytosolic or nuclear protein.
When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across plasma membrane and various channel proteins close. What are these channels known as.
Assume you have travelled back in time and entered the body of your favorite monk. You find yourself in his garden observing red and white flowering pea plants.
Description of the communicable disease (causes, symptoms, mode of transmission, complications, treatment) and the demographic of interest (mortality, morbidity, incidence, and prevalence).
Describe the output of the oxygen monitor when the DO chamber is completely depleted of oxygen (with units).
A bowl of potato salad was left on picnic table for three hours on hot summer day. The microbial load was 300 CFU/g when the salad was put on table.
Explain why a child of two parentswho both display DownSyndrome can be genotypically normal? Distinguish between organic molecules like Styrofoam and plastic, and the organic molecules that characterize living matter.
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