Why might the influenza vaccine be less effective than other vaccines?

In Drosophila, the yellow (y) and the white (w) gene are both X-linked and recessive and 1 m.u. apart. You cross a true breeding yellow female with wildtype red eyes with a male with wildtype body color and white eyes. You obtain all wildtype females in the F1. You testcross an F1 female with a yellow bodied male with white eyes.

What is the expected proportion of the testcross males that are yellow with white eyes? Please explain your answer.

Describe 3 reasons why deciduous trees when under stress might lose their leaves.

A 64-year old urbanite male reports to your practice with fever, malaise and a cough. His vaccinations are up-to-date, including DPT. His condition worsens over several days, with his temperature increasing to 40.4 ^oC and development of dyspnea (difficulty of breathing). His lungs show signs of mild inflammation with thin, watery secretion that has a greenish tinge. The patient is given antibiotics and Gram stains made from a bronchial lavage showed a thin gram negative rod. The organism grew well on blood agar plates, producing a flat, metallic colony with beta hemolysis and a fruity odor.

What is the most likely organism causing this man’s infection?

What laboratory testing should be performed to confirm this diagnosis, and what are the expected results? Include any special media as well as routine biochemical testing.

What is the best treatment for this patient? What is the typical pattern of susceptibility for this organism?

Table 1: Population Data for the World

Table 2: Population Data for China

Table 3: Population Data for China

Table 4: Population Data for United States

Table 5: Population Data for Dominican Republic

Write a 2-pagesummary(Times New Roman, 12 point font, doublespace) of what the data in Tables 1-5is telling YOU.

We have two data for China, the fertility rate ( number of children per woman) are note the same. one is 1.70 and the second 2.44.

I know homologous proteins will have similar structures, but will non-homologous proteins with similar functions also have similar structures?

Differentiate between primary active transport and secondary active transport. Be specific with at least 100 words

1. There are a few forms of "apoptosis". All of these forms have the same end point, but they differ in how the cells get there. in particular some forms of apoptosis do NOT REQUIRE the activation of the caspases.

a. Given that the end point of apoptosis is the same, describe one way you would expect all of these forms of cell to be the same (Dead cells is NOT a sufficient answer).

You are studying apoptosis in a particular cell type and you would like to determine if caspase activation occurs during this apoptotic event.

b. Describe how caspases are normally activated during apoptosis.

c. design an experiment to test if caspases are active during your apoptotic event. This is just the experimental design, what you're going to do and NOT what will it show you.

d. Draw and label two figures with all of the appropriate controls. You do not need to write a figure legend, but your labeling should be sufficient enough to be able to interpret the figure.

i. A figure showing that caspases ARE activated by your apoptotic event.

ii. A figure showing that caspases ARE NOT activated by your apoptotic event.

New answer needed***

Understanding basic safety procedures used in the biology laboratory. This assignment will also introduce the scientific method and metric system, and will explore properties of water that are essential to life.

Apply critical thinking to answer the following:

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.

1. Why is it important to maintain good nutrition during pregnancy?

2. Are cravings during pregnancy real or a myth?

3. Which is better breast milk or formula milk or is there even much of a difference?

4. What are some benefits of breastfeeding?

5. Should caregivers use food as punishment or reward? Why or why not?

6. What are the major factors that contributed to increased life expectancy during the past century?

a. Identify hydrogen bond donors and acceptors in each Watson-Crick base pair. Why won't adenine base hydrogen bond with cytosine or guanine hydrogen bond with thymine?

b. Name an important structure stabilized by Van der Waals interactions. Explain how the Van der Waals interactions work in this instance

c. Explain how the ionization state of any amino acid (or its side chain in a protein) at any

pH can be predicted, based on its pKa value.

Which are functions of the signal recognition particle (SRP)?

1. to pause protein synthesis as the signal sequence emerges from the peptidyl exit tunnel
2. to deliver the nascent polypeptide to the SRP receptor on the endoplasmic reticulum
3. to dissociate the nascent polypeptide from the ribosome
4. to resume protein synthesis after docking to the SRP receptor
5. to cleave the signal sequence from nascent polypeptides
6. to translocate the nascent polypeptide into the lumen of the endoplasmic reticulum

Which are functions of the signal recognition particle (SRP)?

1. to pause protein synthesis as the signal sequence emerges from the peptidyl exit tunnel
2. to deliver the nascent polypeptide to the SRP receptor on the endoplasmic reticulum
3. to dissociate the nascent polypeptide from the ribosome
4. to resume protein synthesis after docking to the SRP receptor
5. to cleave the signal sequence from nascent polypeptides
6. to translocate the nascent polypeptide into the lumen of the endoplasmic reticulum

Choose best answer

- 1, 2, 6

- 1, 2, 3, 4

- 2, 4, 6

- 1, 2, 4

- 1, 2, 4, 5

Discuss the life cycle of the jellyfish Aurelia. Is there an Alternation of Generations in the life cycle? Explain.