shantimaurya738

Should we be concerned about the endocrine disruptor chemicals (EDCs) exposure we have in our lives? Explain your answer.

Which way does a neutral charged dye run? Positive charged dye? Negatively charged dye?

You wake up late for NUTR 750, and dash to class without eating breakfast. After class, you head off with your study group for an hour of review, then you’re back to classes straight through from 11:10 AM to 2:00 PM. Your hunger has vanished, so you decide to hit the library for more studying then meet friends at HoCo for “Italian Night” at 7 PM. As you walk to HoCo, you realize it’s been 24 hours since you last ate. But you’re not worried, because you know your liver is synthesizing glucose to maintain blood sugar levels for your brain. Please name (a) the top three biochemical substrates that the liver will use for gluconeogenesis, (b) the key regulated enzymes that make hepatic glucose synthesis possible, and (c) the mechanisms by which each enzyme is regulated. (d) Does your fasted state impact each enzyme’s mechanism of regulation, or only certain enzymes? Why or why not - from a biochemical perspective.

Tissue engineering is a promising approach to replace lost or damaged tissues and reduce the need for organ transplantations. organs (heart, lung, etc.) can be decellularized and repopulated with the patient’s own cells. Briefly describe the main pros and cons of this approach. How would it compare to using a synthetic biomaterial seeded with cells (pros and cons)?

CO₂ fixation pathways occurs in humans. Where does it occur and describe the CO₂ fixation reactions that occur in human cells. Provide sources if used.

Hard water is water with high mineral/salt content. I'm toldthat a potted plant watered with a salt solution dries out sooneror later. Is this true?

If so, would a plant survive if watered using hard-water?

If sodium does not move down its gradient in the co-transport pump, what would be the outcome?

Glycophorins are red blood cell membrane glycoproteins that bear important blood-group antigens. Shown below is the primary sequence for glycophorin B which possesses a single transmembrane segment. (Blanchard et al., J. Biol. Chem. 262 (1987) 5808). Identify the likely ‘transmembrane’ segment (provide residue number range) and justify your selection.

Leu Ser Thr Thr Glu Val Ala Met His Thr Ser Thr Ser Ser Ser Val Thr Lys Ser Tyr 20

Ile Ser Ser Gln Thr Asn Gly Glu Met Gly Gln Leu Val His Arg Phe Thr Val Pro Ala 40

Pro Val Val Ile Ile Leu Ile Ile Leu Ser Val Met Ala Gly Ile Ile Gly Thr Ile Leu 60

Leu Ile Ser Tyr Ser Ile Arg Arg Leu Ile Lys 71

What role does fiber play in digestion and absorption? Discuss how these can be attributed to health benefits and give examples. Be specific, support your answer and be sure to cite your sources using APA style.

In a eukaryotic cell, proteins are synthesized, and pass through a series of specialized organelles before reaching their target. Describe how a trans-membrane protein would be synthesized, processed and ultimately become a part of the plasma membrane of the cell.

As the new CHN for a local community you have been asked to address the incidence of substance abuse for women ages 15-30. You have been given statistical information that includes evidence of poly-substance abuse for this group. 1. State the concerns specific to this age group regarding polysubstance abuse. 2. State your specific plans for developing outreach programs and education for this age group. 3. State how you would implement your plan and give timelines. Be specific about plan for this age group (who, what. when, where, type of education, how education would be implemented with timelines). Provide evidence-based rationale for your plan.

1. The DASH diet:

includes 5 servings of fruits and vegetables each day.

only reduces blood pressure for people who are sensitive to sodium.

is high in sodium and saturated fat.

has been shown to significantly reduce blood pressure in people with and without hypertension.

2.To fight free radicals, the body uses all of the following EXCEPT:

3.

Vitamin E:

4.

Good sources of vitamin E are:

Which of the following statements regarding the ligand-gated receptor is false?

a. A similarly shaped foreign ligand can attach to the receptor and block
the naturally occurring ligand from binding.

b. The naturally occurring ligand should bind irreversibly to the receptor
until it breaks down.

c. A ligand can attach to the receptor and activate an intracellular catalytic site on the same molecule.

d. The receptor surface is usually extracellular.

e. The naturally occurring ligand can cause the associated protein channel to open.

25yo woman in Haiti has recurrent swellings of the left leg up to the groin. Although the swellings have resolved spontaneously up to this point, there is a 2cm difference in the diameter of her legs measured 10cm below the patella. WBC count is remarkable at 12,500/mm3 with 40% eosinophils. Examination of which of the following may be helpful in making the causal diagnosis?

What does the term nucleosome positioning mean? Where does it frequently occur and what may cause this to occur? What are the intrinsic and extrinsic mechanisms?

Please use a few sentences to answer the following questions (Please print):

5. Consider a plant at these various stages of growth:

A) seedling pushes through soil and begins growth

B) seedling continues vertical growth

C) seedling becomes shaded from new growth above

D) seedling has apical tip bitten off by herbivore

Describe the actions of auxins and cytokinins during the 4 stages of plant growth described above including any interactions between these 2 hormones.

6. Tremendous increases in crop yields (the “ Green Revolution ”) during the 20th century occurred because of increased use of fertilizer and the introduction of semi- dwarf varieties of grains(e.g. rice).

Describe the role of gibberellins in the semi- dwarf varieties of grains compared to the wild- type.

Choose the incorrect statement. G protein-coupled signaling

A) Muscarine binding to a G protein-coupled receptor results in the release of GDP and binding of GTP by the ? subunit, activation of the amplifier enzyme adenylate cyclase, and formation of cAMP.

B) In anaphyactic shock, administration of epinephrine can be life-saving because cellular responses include binding to both ? and ? receptors, resulting in an elevation of blood pressure and opening of the respiratory airways.

C) The binding of epinephrine to a ? receptor can lead to the intracellular formation of the second messenger molecule cAMP, which can lead to smooth muscle relaxation.

D) Activation of Phospholipase C by the the ? subunit of a G protein can lead to the formation of IP3, which is a second messenger molecule that binds to a nonspecific cation channel on the membrane of the endoplasmic reticulum or sarcoplasmic reticulum.

How does blood pressure affect the kidneys? How does kidneyfunction affect blood pressure?

Human blood cells, early embryous of the african clawed frog, sea urchin embryo, early zebrafish embryo, amoeba proteus stained wirh ph dependent dye, mouse embryotic steam cells, human red blood cells, eodea cell, human cheek cells staines with methylene blue

1. which display cells that are differentiated that is specialized for particular function? How many of their functions can you name? Would you argue that the amoeba is a differentiated cell or not?

2. Which display cells that are not differentiated? as they continued to divide, will some of their descendants become differiated? what kinds of diferretianted cells will they be?

The main system board of the computer is called ____.

(A) Motherboard

(B) Processor

(C) Microchip

(D) None of these

process of cephalization?

- Apply the method to homeostasis in biological organisms

As altitude increases, atmospheric pressure decreases, which means less oxygen is diffused into the blood from the lungs. For instance, at 18,000 feet you would obtain 29% less oxygen than you would at sea level. This can lead to altitude sickness, or hypoxia as it is called.

Imagine a mountain climber, who lives at sea level, trying to climb Mount Kilimanjaro for the first time. The climber is very fit so he plans to summit the 19,341 foot peak in four days, though it usually takes first-time climbers five or six days. Use your knowledge of equilibrium to predict the climber’s reaction to this speedy climb, and the reaction needed to restore equilibrium.

Match the equations to the appropriate blanks in the sentences. Make certain each sentence is complete before submitting your answer.

equilibrium shifts to O2release

equilibrium shifts to HbO2formation

1. When the climber ascends the mountain before acclimating, to restore homeostasis within the body.

2. As the climber rehydrates and rests at a basecamp, hemoglobin (Hb) is produced, which is the body's response to the stress. As a result, .

3. When the climber returns to sea level before reacclimating, to restore homeostasis within the body.

4. As the climber reacclimates to sea level, hemoglobin is replaced at a lower rate, decreasing hemoglobin concentrations in the blood. As a result, .

A ladder 13ft long leans against a vertical wall. If the top slides down at 3ft/s, how fast is the angle of elevation of the ladder decreasing when the lower end is 9ft from the wall

Seven measurement of the pH of a buffer solution gave the following results 5.12,5.20,5.15,5.17,5.16,5.19,5.15. Calculate the 95% and 99% confidence limits for the true pH (Assume that there are no systematic errors)

the

The concentrated sulfuric acid we use in the laboratory is 98.0% sulfuric acid by weight in water. Calculate the molarity of concentrated sulfuric acid if the density of the solution is 1.83 g cm-3.

then what is a contradiction then?, in modern mathematics

What is a pattern in Mathematics?

1. A man is climbing up a mountain which is inclined. He has to travel 100 km to reach the top of the mountain. Every day He climbs up 2 km forward in the day time. Exhausted, he then takes rest there at night time. At night, while he is asleep, he slips down 1 km backwards because the mountain is inclined. Then how many days does it take him to reach the mountain top?  I'm in the dire need of

Name the thing which is not invented till now?

Tremors at rest and tremors during activity, how do they differ in structure and pathway? 

1. How many bones are in the human body?

Number of amino acid in human body?

In flow cytometry (FACS) analysis, why is 2N live cells gated for DNA damage analysis with GammaH2AX?

Describe the reciprocal relationships between ABO antigens and antibodies for blood types O, A, B, and AB.

In the process of transcription, the enzyme __________________________ unwinds the DNA sequence to be transcribed and then synthesizes a chain of RNA nucleotides that is complementary to it. A. DNA synthase B. RNA synthase C. Protease D. DNA Polymerase E. RNA Polymeras

Short essay questions

1)Where is ADH produced? Where is it released? Describe how ADH secretion is controlled. What effect does this hormone have?

2)How are the two basic types of diabetes mellitus different? How are they similar? How are they treated and why are these treatments chosen?

3)Where is oxytocin produced? Where is it released? Describe how oxytocin secretion is controlled and its effect.

which non specific cell type is most likely to ingest pathegions and a presenta fragments of these pathogens to specfici immune cells ?

antibodies

macrophages

helper T cells

mast cells cytoxic T cells

How does Reformist Environmentalism differ from the Deep Ecology Movement. Give the central difference and then elaborate two or three goals of the Deep Ecology Movement that Devall and others want to see actualized in the world.