Please draw and label a generalized diplontic, haplontic or alternation of generation life cycle. (including mitosis). Please draw and label the difference between homosporous alternation of generation and heterosporous alternation of generation. Also isomorephic and heteromorphic.
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topic: flow-cytometric sperm separation ( write a review on it more than 800 words) Please answer the question only if you can observe the minimum limit of 800 words and if it is possible please type the answer. Thank you.
In: Biology
In: Biology
Are the protists a monophyletic group? please discuss this and describe this by drawing a “tree” that would include the diatoms, dinoflagellates, red algae, brown algae, green algae and charophytes. what are the main characteristics of these different groups, i.e., which of these groups have silica in its cell walls? Which has both chlorophyll a and b,which of these is considered in the plantae group but NOT a green plant, etc.?
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. List four strategies to control flystrike and describe how they reduce the risk of flystrike
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1. Describe a BEACH that you would find on a passive margin coastline.
2. Describe a BEACH that you would find on an active margin coastline.
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Discuss how sexual selection pressures differ between males and females. What effect does this have on adaptations and other features observed between different sexes in plants and/or animals? Give several examples of how a sexual character can aid an animal in securing a mate thereby enhancing fitness. What factor(s) potentially place a restraint on this type of directional selection?
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A. Your best friends nose
B. A strangers cell phone
C. A sterile swab
D. All of the above
E. A and B
6. Which of the following is/are true of aseptic technique during streak plating?
A. It prevents airborne contaminants from entering the test tube culture you are working with.
B. It prevents airborne contaminants from entering the Petri plate.
C. It prevents cells from your culture from being left on the loop (to be touched by you or someone else the next time the loop is used).
D. All of the above
E. B and C
11. The primary function of the simple stain using methylene blue is to…
13. If safranin was replaced with methylene blue in the Gram stain, then Gram-negative E. coli would appear?
A. Bluish-Purple
B. Green
C. Pink
D. Red
E. Yellow
In: Biology
What is cystic fibrosis? Describe the major genetic cause and
the mechanism that leads to the
symptoms of the disease.
In: Biology
In: Biology
The maximum yield of ATP per molecule of glucose in eukaryotic cells is 36 or 38 ATP, depending on cell type and conditions. Why is the calculated ATP yield referred to as "Maximal Theoretical Yield" in eukaryotic and in prokaryotic cells?
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1. How would it affect organisms living in cold climates if oil
or alcohol were their main body fluid?
2. How do you think the cohesive nature of water relates to its
evaporation?
3. Describe in detail an experiment you could conduct to test
whether another substance could replace water.
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Describe how you would identify genes responsible for transcription in E. coli by isolating mutations in their genes. Remember that these genes are required for cell viability. Include all the steps in the isolation of the mutants and also describe how you will differentiate the mutants you want from those in other genes necessary for viability. This includes giving me the expected result for mutants in the genes you want.
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The average sperm count in males is now lower than it was several decades ago. The reasons for lower sperm counts observed in males today is not known. Propose a hypothesis as to why, global, sperm counts are lower today than then were fifty years ago. What experiment could you do to test your hypothesis?
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