Draw a graph showing what would happen to resting membrane potential over time, if the sodium/potassium pump were not functioning. How would this affect a neuron's ability to produce action potentials? What does this imply about the quantity of ions that normally cross the membrane during the course of an action potential?

TRUE/FALSE

1.) Asymmetric distribution of phospholipids in the bilayers of cell membranes arises because phospatidylcholine and sphingomyelin spontaneously translocate from the cytoplasmic to the extracytoplasmic face of the membrane.

2.) The carbohydrate headgroups in glucosyl ceramide, lactosylceramide, and ganglioside are all attached to ceramide via a phosphoryl group.

In the textbook section titled "Endergonic and Exergonic Reactions", you studied a figure with a "comparison of combustion and cell respiration". Do you think it's possible that our bodies sometimes release energy in a "less controlled manner", to purposefully generate heat? With all due respect to the Second Law of Thermodynamics, it sure is nice to stay warm on a cold night!

In zebrafish, three genes have been mapped on the third chromosome, in the order fiz---6 m.u.---myob-------14 m.u.-------sufi The wild-type allele of each gene is dominant. A strain that is fiz myob sufi / + + + is testcrossed, and there are 1000 offspring fish.

There are 400 wild type offspring.

A) How many  fiz + + offspring would you expect to see in these 1000 offspring?

B) How many + + sufioffspring would you expect to see in these 1000 offspring?

Sry Guy no idea under what subject - so I put under biology

a)Look at the technologies around you – how many of them upon careful consideration reply on various form of nanotechnology? List a few example and further study the influence on nanotechnology on its development. consider this: are we always of whether technologies involve other technologies?how many technologies of today actually considered fundamental or primary technologies?

b)Base on your understanding what is the potential application for nanotechnology with regard to medicine, particularly in current trends for research development and the resulting technologies. List a few samples to support your answer.
c)How effective do you think the early forms of medicine were?Would the lack of clear anatomical and physiological understanding have affected this? How would these method have developed?
d)what effects would the improvements of diagnostic tests and procedures have on health care as a whole, communities, and individuals?should we expect changes in the attrition figure for the population?
e)What implications might these have on city planning, infrastructure, and economic development?What else needs to be considered?

Describe the synthesis of ATP from ADP and Pi by the F0F1-ATPase.   This enzyme couples two processes – the transfer of protons from out to in and the synthesis of ATP – make sure your story includes some discussion of these two sub reactions and how one is coupled to the other.

Write sequence of the DNA strand that would be complementary to the DNA sequence shown below. Label the 3' and 5' ends ofthe new strand.

3'   T A C C G A T G G    5'

Dissect the Calvin cycle and tell its energy story.

Chemicals or radiation may alter a nucleotide base in one strand of DNA; this alteration may cause the altered base to pair with a nucleotide base other than its normal one. What effect would this accidental change in the base sequences of the DNA molecule have on DNA replication?

To examine the hierarchy of signal sequence targeting in a cell, you construct a variety of proteins containing different combinations of signal sequences. Based on your extensive knowledge of protein targeting, predict the location of each of these fusion proteins listed below. Provide the logic for your predictions.

(A) ER signal sequence and NLS

(B) mitochondrial signal sequence and KDEL sequence

(C) matrix-targeting sequence and a stop-transfer sequence

Briefly describe the role of siRNA and miRNA and suggest why the structure of RNA could play a role in this process.

population Problems

A species of finches on the Galapagos Island has a geometric growth pattern. The island has 25 000 finches in the first year. In the same year, there are 5000 births and 3500 deaths. What is the geometric growth rate Calculate the population after 5 years A population of walruses on an island in the South Pacific Ocean shows continuous growth.

The carry capacity of the environment is 10 000 and r = 0.5. What is the rate of growth for populations of 100, 1000 and 2000 walruses.

The Metro Toronto Zoo has an endangered species called the Eastern cougar. A pair of cougars have a fecundity of 5 offspring per year where all offspring survive to reproductive age (2.5 per parent per generation). Explain the type of growth Calculate the number of cougars after 5 years and 9 years.

In the summer, the Ottawa University has many pigeons. A grade 12 biology student decided to estimate the population size. She noticed that when she fed the pigeons in the atrium of Morriset Library, the same amount always returned. She devised a way to tag them. The first week she tagged 55 pigeons by luring them and feeding them. The second week she recaptured 45 pigeons and of those only 8 had the original tag. Estimate the population size.

A group of biology students are assisting a researcher from the University of Toronto on a project. They are trying to determine the growth rate of frogs in a marsh near Owen Sound. There are 200 frogs in the first year. By the time the students are in grade 12, 40 frogs were born, 90 died and 5 frogs immigrated. Determine the growth rate Do you think that tracking the frogs for one year is sufficient for this researcher?

An eager graduate student at Carleton, counts geese in the marshes off the Ottawa river. In 2004, they counted 2500 geese. During the next year, 500 goslings hatched, 45 immigrated, 200 died and 30 emigrated. Determine the following: Population change in individuals, in % and per capita The expected size of the population after 2, 4 and 8 years, given unlimited resources The doubling time, where r = 0.1725 Assuming a carrying capacity of 4235 geese, when will the geese population reach carrying capacity under ideal conditions?

if possible i would appreciate an answer in a text form not handwritten. thank you

.Can salta marshes absorb our nutrients?

what is the diffrencebetween biomagnificaction and bioaccumulation?

Explain the concept of survivorship. What is Type I, Type II, and Type III survivorship? Give an example of each type and explain how survivorship relates to population change.

Give 3 types of population dispersion with an example of each.

Name and explain two factors that affect population growth rates.

if possible i would appreciate an answer in a text form not handwritten. thank you