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Assignment
1.) You are investigating a single-celled eukaryotic plant cell and the bacteria that live inside it. What organelles will you observe in both organisms? Give a specific explanation for your answer.
2.) Imagine that certain warblers exhibit mating behavior that seperates them from another group of warblers: one group mates and lay eggs only on apple trees, and the other group mates and lay eggs only on walnut trees. How could you design an experiment to test if these are diffrent species or still the same species? Be sure to state your hypothesis, the independent and dependednt variable, and a control in your desigh.
3.) Lithops are succulent plants that resembel stones. Describe four of the characteristics of life that distinguish these plants from the dead stones they mimic.
Suppose you are purifying a protein on a weak cation exchanger (pH 7.5) and it comes off at 300mM salt. predict what salt concentration (lower, same, higher) the protein would come off if you used a strong cation exchanger.
Define biodiversity and explain how it is most commonly measured. Now consider the various ways to define a species (i.e., species concepts) covered in the readings and explain how current estimates of biodiversity might change depending on the speci..
Apply the principle of exponential growth to the cells in a multicellular organism where a cancer arises in a lymph node. Assume the tumor cells double every 18 hours and none die. How many days will it take to become a palpable mass (approximatel..
Upon doing a negative stain of unencapsulated gram-negative cells, a small halo will be seen around the cells. Why is this the case? What external structure of a gram negative cell will exclude the negative stain.
Defects in structures of cell can lead to various diseases. Pick one structure of eukaryotic cell and develop a hypothesis as to what you think implications would be if that structure did not function properly and determine where is genetic material ..
Thalidomide was a druggiven to pregnant women in the early 1960's to reduce morningsickness. Unfortunately, the drug caused irreparable damage to thedeveloping fetus.
You have a 1mM stock solution of Arsenic to treat culture cells in a liquid medium. You need to treat your cells with Arsenic such that it has a final concentration of 5nM once it has been added to the cells.
Design a test to discover the mechanisms by which plants perceive this difference and change the developmental patterns of leaves. For the first way, I know that concentration of Far Red Phytochrome plays a key role in sensing about of sunlight, b..
q. a. an ecologist studying desert plants performed the following experiment. she staked out two identical plots that
A Drosophila researcher has recently isolated a number of mutant fruit flies. The phenotype of each mutant is described below (i–iv). For each mutant, describe the type of gene (maternal-effect gene, gap gene, segment-polarity gene, or homeotic ge..
The following amino acid sequence was derived from the DNA sequence of a gene encoding a hypothetical type I integral plasma membrane protein. (The • merely indicate every 10 amino acids beginning with M1 & ending with V140). Use this informat..
Organisms cannot, will not, do not live in isolation. All life depends on other organisms (either directly or indirectly) rely on others for survival. What are the animals that consume sponges? Describe one way sponges contribute to the organism ..
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