In plants, twisted leaves, a hypothetical mutant phenotype, may be caused by either a chloroplast gene (C^T = normal; C^t = twisted) or a recessive nuclear gene (N^T = normal; N^t = twisted). Assume chloroplast DNA is maternally inherited. Predict the genotypic and phenotypic ratios in the offspring of the following crosses:

a.         C^T N^tN^t female x C^t N^TN^T male

b.         C^t N^tN^t female x C^T N^TN^T male

c.         F₁ male from cross (a) x F₁ female from cross (b)

List five characteristics, in order from ancestral to derived that occurred during the eye development.

From early chordates' light sensitive pits to the current spherical evolved eye, in sharks for example.

Blood glucose levels are under the control of the hormones insulin and glucagon. Describe the control of blood glucose levels in a (normal) individual following a carbohydrate meal.

Do some research and add your ideas to the following topic.

WHAT IS AN ENVIRONMENTALLY SUSTAINABLE SOCIETY?

Then write an answer using at least 200 words but fewer than 300 words to describe the answer to the question. Then upload your document.

Microbiology Question:

An organism is exposed to a chemical which impedes (but does not block) the flow of electrons through the electron transport chain. Explain the consequences in a manner which demonstrates your understanding of chemiosmosis/oxidative phosphorylation.

What's the function of these systems?
esophagous, phraynx, glottis, trachea

Describe how the Hershey-Chase experiment demonstrated that DNA is the genetic material, not protein as previously thought. Explain how they used radioactive isotopes and bacteriophages in their experiment and summarize their conclusions.

You may choose more than one answer. In order to demonstrate that a growth hormone binds its receptor specifically, you must show which of the following?

Dose-dependent binding

Saturation binding

Specific binding

Protein activity

1. Illustrate meiosis in the life cycle of a higher animal.

2. How does the amount of DNA per cell change during gametogenesis and fertilization?

3. Describe the movement of chromosomes during each stage of meiosis. At each stage, determine the number of bivalents, the number of chromosomes, the number of chromatids, and the relative amount of DNA.

4. Explain how recombination occurs between homologous chromosomes.

(Please answer all the questions)

Explain how the genetic code and the central dogma of protein synthesis can be used to genetically modify organisms and what properties of the genetic code and the central dogma of protein synthesis allow scientist to insert a firefly gene into a tobacco plant?

Enteral feeding calculations

1. Calculate total calories, protein, and free water provided in the following examples.  DO NOT ROUND UP final numbers!  Show your work.

Full strength Osmolite 1.2 at 60 mls/hr x 24 hours

            Calories

            Protein:

            Free Water:

            Full strength Jevity 1.5 at 50 mL/hr x 20 hours

            Calories

            Protein

            Free water

Full strength Glucerna 1.2 at 75 mL/hr x 24 hours

            Calories

            Protein

            Water

                        Full strength Vital 1.0 at 90 mL/hr x 20 hours

            Calories

            Protein

            Water

            Mrs Jones is receiving full strength Osmolite 1.5 360 mL of formula at 0800, 1200, 1600, 2000.  She receives 30 mL of water flush before each feeding and 50 mL flush after each feeding.  Calculate how much calories, protein and free water she is receiving daily.

*Is Mrs Jones meeting the RDI for vitamins & minerals??         

            Mr Smith requires 1800 kcals, 75 g protein, and 2.4 liters of fluid daily.  Using Jevity 1.2, what would his enteral feeding prescription be for 24 hour continuous feedings.  Calculate tube feeding rate, daily kcals, protein and free water the prescription would provide.  

            FS Jevity 1.2 @ 62.5 ml/hr x 24 hours

Mr Cooper is receiving full strength Osmolite 1.5 at 50 mLs/hr x 24 hours in the hospital.  He is getting ready to go home on bolus feedings.  How much calories, protein and free water is he receiving in the hospital?  Calculate a bolus feeding regimen for Mr Cooper to follow at home that provides similar calories and protein as his hospital feeding and provides 1 mL per kcal of free water.

*Is Mr. Cooper meeting the RDI for vitamins & minerals??         

            Mrs Smith is receiving full strength Jevity 1.2 at 65 mL/hr s 24 hours in the hospital.  She is going to go home on nocturnal feedings.  Set up a feeding regimen that provides similar kcals, protein, and water over 14 hours as her hospital regimen.  Provide free water equal to 1 ml per kcal of feeding.  

*Is Mrs Smith meeting the RDI for vitamins & minerals??       

Topic : The mechanism of DNA repair (write a review on it more than 3000 words)

Provide three examples of a biological organism converting one form of energy into another*.  For each example, include:

1.What form of energy do you start with and what form of energy is it converted into?
2.What does this allow the organism to do?

Finally, answer: is this conversion 100% efficient, and why or why not?

*Note: do not re-use the same forms of energy in the same order. For example, if your first example involves the conversion of chemical energy into mechanical energy, your second example can include the conversion of chemical energy into some other form of energy, or the conversion of some other form of energy into mechanical energy, but cannot be the conversion of chemical into mechanical again.