The water characteristic curve is important because:

a) It is used to obtain the available water content of a soil

b) All organisms including roots respond to water content rather than water potential

c) It relates soil water content to the energy with which the water is held in the soil

d) b) and c) only

e) a) and b) only

What is the key difference between financial statement analysis and operating indicator analysis? How are these types of analyses useful to healthcare managers and investors? Consider a healthcare organization with which you are familiar and discuss what are some of the problems or challenges inherent in financial statement analysis?

You determined in the previous assignment the exact volume of 50X TAE that you will need. I suggest that you make 40 ml of 50X TAE so that you have some extra (just in case you need it). The recipe for one liter of 50X TAE is as follows: ¥ 242g Tris base ¥ 57.1 ml glacial acetic acid ¥ 100 ml 0.5 M EDTA pH 8.0 9. Provide a recipe for 40 ml of 50X TAE. 10. When you make your agarose gel, you will need to make 50 ml of 1% (w/v) agarose in 1X TAE. How much agarose will you require? [you will make this later, not on Solution day]

As we progress from bipolar cells to ganglion cells to later cells in the visual system, are receptor fields ordinarily larger, smaller, or the same size? Explain the concept of a receptive field in the visual system and provide an example of this concept for a ganglion cell within the retina.

Which statements about glucose-6-phosphate dehydrogenase are correct? Multiple answers: You can select more than one option

A It catalyzes the committed step in the pentose phosphate pathway.

B It is regulated by the availability of NAD+.

C One of its products is 6-phosphogluconate.

D It contains thiamine pyrophosphate as a cofactor.

E It is important in the reduction of glutathione in erythrocytes.

Arrange these biological molecules (nucleic acid, cellulose, unsaturated fatty acid, saturated fatty acid) in order from highest to lowest energy density? Take note of which chemical bonds have the highest potential energy.  Can you explain which bonds have high or low potential energy and why? Also, covalent bonds between which of the atoms will have the highest potential energy?

BIOCHEMISTRY (CELLULAR RESPIRATION/ELECTRON TRANSPORT CHAIN)

1) Steps of cellular respiration are: (multiple answers may be correct)

A. Fermentation

B. Oxidative carboxylation of pyruvate

C. Citric Acid Cycle

D. Mitochondrial Electron Transport Chain

E. Reduction of molecular Oxygen by cytochrome C.

2) Steps of Oxidative Phosphorylation (in a wider sense) are: (multiple answers may be correct)

A. Fermentation

B. Glycolysis

C. Mitochondrial electron transport chain

D. Reduction of molecular Oxygen by cytochrome C

E. H+ gradient driven synthesis of ATP

3) Which of the following is correct? (only one answers is correct)

4) The amount of free energy changes during redox reactions depends on (only one answer is correct)

The sidechains of __ are positively charged at physiological pH.

Select one:

a. Asp, Glu

b. Lys, Arg

c. His, Tyr

d. Asn, Gln

Microbiology question

Q:why Quorum sensing is important to biofilm dispersion?

Antibodies are suitable for diagnostic tests, because Select one:

a. they can be used only for humans.

b. they can be readily purified.

c. they are found in very small quantities.

d. they bind very specifically to antigens with very high affinity.

e. they are found everywhere.

An experiment has been initiated in a laboratory where recombinant DNA technology has been used to substitute the gene responsible for change of colour in chameleon with another gene responsible for “glowin-the-dark”. If this experiment is successful, chameleons carrying the “glow-in-the-dark” gene will not be able to change their colours any longer. Discuss the implication of these results in terms of ethics and conservation biology.

Immune responses working to protect the host need to be carefully regulated, since overt immune function may be harmful to the host. There are several feed back inhibitory loops evolved to regulate immune cell activation. Briefly describe how B cells and T cells are equipped with such feed back regulatory circuits upon activation.

what is the typical diagnostic technique& mechanism about infectious disease? at least 5 type!!!

1)The transposon Tn5 was used to create a library of 50,000 Escherichia coli mutant strains having random Tn5 insertions in their chromosomal genes. A suicide delivery plasmid vector that carries Tn5 was used for this purpose. Explain how and why a suicide delivery plasmid was used to generate this library and give one (1) example of how you would screen this library to find mutants with Tn5 insertions in specific genes of interest, for example, in the lac (lactose) operon.

2) Describe the experiments by Robert Koch that underpin Koch’s postulates. What are FOUR (4) reasons why these postulates could be too restrictive?