Question

It requires a force of ~20 piconewtons (pN) to pull a P-selectin molecule out of a pure lipid bilayer. To pull P- selectin out of the plasma membrane requires >100 pN. Why do you think it takes so much more force to pull P-selectin out of the plasma membrane than out of a lipid bilayer?

Answer #1

In a survey taken in 2013, 20 out of 30 women and 17 out of 35
men said they felt much better about the state of our economy today
than they did a few years ago. Do these data provide sufficient
evidence at the 0.01 level of significance to conclude that women
are more likely than men to feel better about the economy today
than they did a few years ago? Use the P-Value Method of Testing.
In your work...

Statistical significance (alpha level;
p-value) reflects the odds that
a particular finding could have
occurred by chance.
If the
p-value for a difference between
two groups is 0.05, it would be expected to occur by chance just 5
times out of 100 (thus, it is likely to be a “real” difference). We
define a p-value of less than 0.05 to indicate statistical
significance.
Suppose a pizza place claims their delivery times are 30 minutes
or less on average but you...

11-14. The following data are pull-ups for college male students
at pre and post. Find out if there is any difference between pre-
and post-test. Pre-test 10, 11, 13, 14, 15, 16, 17 Post-test 11,
14, 16, 10, 22, 18, 19
13. Is the t value statistically significant at the p value of 0.01
(99% cumulative probability)?
14. If yes/no, what is the p-value found on the output?
Question 15-17. A volleyball coach noted that players who practices
jumping during...

1. Pick a minimum of 20 observations on any subject. This will
include a dependent variable plus two independent variables that
you may think are either negatively or positively correlated with
the dependent variable. List the observed data (include the
source). Then do the following:
a. State before doing any calculations whether you think they
are positively or negatively correlated. What is your
rationale?
Example: I test for a correlation between the quantity of coffee
that people buy (Y) with...

Case Study
Google and P&G Swap Employees
The cultures of the two companies could not be more
different. Procter & Gamble (P&G) is notoriously
controlled, disciplined, scalable and rigid—so much so that
employees call themselves ‘Proctoids’. Google is just as famous for
its laid-back, unstandardised, free-flowing culture.
So what would cause these two large, successful examples
of a strong—yet dissimilar—corporate culture to decide to socialise
each another’s employees? One reason clearly is marketing: P&G
sees more of its future marketing...

Assume instead that P&G acquired all of the stock of
Gillette in exchange for $53 in cash per share and did not make a
Section 338 election. Assume Gillette had 1 billion shares
outstanding. Assume P&G issued bonds to raise the cash
necessary to pay for the acquisition.
a. How much tax would the Gillette shareholders pay in the
transaction? Assume for simplicity that all of the shareholders
were taxable individuals facing long-term capital gains rates (15%)
and had a...

Dialysis tubing comes in different ratings for permeability,
depending on how big the holes are in the tubing. You are a
dialysis technician and you must choose the right tubing for your
patient. You choose the one with the pores that are just large
enough to allow glucose to pass through but not larger molecules.
Once the blood has passed through the machine and is back in the
patient, identify which of the following substances will have been
filtered from...

Matthew Ltd. is considering expanding
and requires a large amount of finance to do so. The company’s CFO
reviewed the current financial position and has strongly advised
management to use debt rather than equity to
raise the necessary funds.
Can you explain a possible reason why the CFO would advise debt
rather than equity?
Matthew Ltd.’s accountant Vanessa has advised management that
if the company takes out a loan they may be subject to positive
covenants. Describe what positive covenants...

14) Consider the oxidation of glucose to carbon dioxide and
water and the production of ATP
a. How many electrons pass through the mitochondrial electron
transport chain per glucose molecule oxidized?
b. How many protons are pumped in the process? Remember that not
all electrons go through NADH.
c. How much energy would be stored per mole of glucose by the
resulting membrane potential at 37C (assume that the pH is 0.5
units lower on the outside than on the...

1. A one-year discount bond promises to pay 132,000 dollars next
year. Brad requires a 20% rate of return from this bond. In other
words, if he thinks that the rate of return from this bond is less
than 20%, he will not buy it. Another way of saying the same thing
is that, Brad is not willing to pay a penny more than ______
dollars for this bond.
2. Suppose that a special bank account is paying an annual...

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