Describe the selection process of alpha/beta T cells and use the following words in your description: lymphotactin, prothymocyte, double negative thymocyte, double positive thymocyte, single positive thymocyte, cortex, medulla, Hassall's corpuscles, post capillary venule

there is no right or wrong answer all you have to do is respond Respond to at least two classmates with substantial posts

High protein diets have commonly been used for intentions such as weight loss or gaining body mass. The reason that a high protein diet is useful for weight loss is because you prioritize your proteins are cut your carbs. Since carbs are a good source of energy, when you take them out, the body begins burning more fat rather than food fuel, where your protein intake is helping give your body nutrients. I personally believe this would be a challenging diet to keep in the long run, because it is hard to constantly have readily available a wide variety of proteins to consume, like beans, fish, lean meats, etc. There is also no need to uphold this diet constantly, because if you are at a healthy weight, incorporating healthy carbs into your diet is important for things like fiber and starch intake. I think the problems that arise with this diet is the conception that all proteins are perfect for this, which is not the case. Consuming things like red meats will always be not good for you due to the high saturated fat content, leading to cardiac diseases. Also, it is good to note that the average body can only use 20-30 grams of protein in protein synthesis, so any more per meal will just go into waste. Another concern with the high protein diet is the risk of kidney failure, damage or stones, because your kidneys would constantly be eliminating all the waste products of protein metabolism,

Phylum Echinoderms

Classes: Crinoidea (sea lilies), Asteroidean (sea stars), Ophiuroidea (brittle stars), Exhninoidea (sea urchin & san dollars), Holothuroidea (sea cucumbers).

In short, compare and contrast traits of these classes such difference and similarity of their anatomy, water vascular system, gas exchange, body plan, development features, larval stages.

Thank yooooou!

Name 2 non-traditional configurations of the TCA cycle and what they are used for.

1) Some etiolated seedlings develop hairs on their epidermis when exposed to dim light. Please Describe an experiment to test the hypothesis that a phytochrome is the photoreceptor for this effect?

Describe how/where protein digestion occurs in the body and how zymogenic serine proteases contribute to the process.

After researching neurotensin , decide which part of that peptide pathway to target so a  drug will enhance learning and memory.

a) Which part of the peptide pathway will you target?

b) How will your drug affect that target? Remember to use your core pharmacology concepts to help you decide this.

4) Prepare a 1 page poster (A3 size) advertising your new drug. Your poster must include the following required elements:

a) The name of your new drug (be creative!).

b) A brief description of the peptide pathway your drug acts on, and how this peptide affects learning and memory.

c) An explanation of the mechanism of action for your drug. Use a flow diagram to help explain this.

d) A catchy marketing slogan to advertise your drug. (For the purposes of this exercise, we will disregard the normal regulations that govern the marketing of pharmaceuticals in Australia!).

e) Reference information. You can choose your preferred referencing style, and where you place this information on your poster (although it must be on the same page as the poster, not on the back). There is no minimum number of references.

Explain how smoking alters the anatomy and physiology of the respiratory tract and leads to emphysema.

Given: bicoid genes are maternal genes; kruppel genes are gap genes, even-skipped genes are pair rule genes, gooseberry genes are gooseberry. Predict the effect of scenarios below on expression levels of each of these gene classes in the embryo described (will expression increase, decrease, or be unaffected?) and explain the reason for your prediction.
a. a fly embryo has a mutation that blocks expression of the kruppel gene

b. a fly embryo has a mutation that blocks expression of the bicoid gene.

c. a fly embryo has a mutation that increases expression of the even skipped gene.

For this week's discussion, choose an animal that you find interesting, and report one adaptation that it possesses. Be sure to report the environmental condition that the adaptation helps the animal to overcome and the references you used to locate the information.

Experiment 1: Neutralization of Acids and Bases

Data Tables and Post-Lab Assessment

Table 2: Initial Litmus Test Results

Table 3: Neutralization

Post-Lab Questions

State your hypothesis (developed in Step 8) here. Be sure to include what you think the pH will be, and why.

What is a neutralization reaction?

When might neutralization reactions be used in a laboratory setting?

At what point was the solution in beaker “B” neutralized?

What do you think would have been the results if a stronger solution of sodium bicarbonate was used? Would it take more or less to neutralize? What about a weaker concentration of sodium bicarbonate?   

Which of the following is arguably the world's first true microbiologist?

Determine which of the following observations are testable. For those that are testable: Determine if the observation is qualitative or quantitative Write a hypothesis and null hypothesis What would be your experimental approach? What are the dependent and independent variables? What are your controls - both positive and negative? How will you collect your data? How will you present your data (charts, graphs, types)? How will you analyze your data? Observations 1. A plant grows three inches faster per day when placed on a window sill than it does when placed on a on a coffee table in the middle of the living room. 2. The teller at the bank with brown hair and brown eyes is taller than the other tellers. 3. When Sally eats healthy foods and exercises regularly, her blood pressure is 10 points lower than when she does not exercise and eats fatty foods. 4. The Italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm. 5. For the past two days, the clouds have come out at 3 pm and it has started raining at 3:15 pm. 6. George did not sleep at all the night following the start of daylight savings.

Biology Ecology Unit

1.

A.) Describe how the phenomenon of bioaccumulation occurs in an ecosystem. What chemical/physical properties make a compound bioaccumulate? Which organisms are affected the most and why?

B.) Which scientist is first credited for bringing this phenomenon to light, what book did she write? Briefly explain the reaction and ultimate outcomes that resulted.

2. Explain how the wildlife values of different seral (successional) stages change during the process of succession in the lowland forests of Western Washington in terms of forage, browse and cover.   Be sure to describe how this relates to the diversity and structural complexity of these stages.