BIOINF 463 : Chapters1-4.pdf

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emeralddonkey197

30 Oct 2014

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During my first few semesters of teaching biochemistry courses i heard many students ask the most dreaded question in all of academia: do we need to know ? . Our job as instructors is to impart as much information on students as possible during the term. Your job as a student is to learn as much as possible. In reality, there is much more biochemistry that should be in an introductory course, such as bio. Mcdb 310, than we can possibly teach and you can possibly learn. Thus, the task becomes more difficult in practice. You must learn as much as is reasonable, and i must sort through all of the information and impart on you what is possible. In that light, it became clear to me that offering students an outline of the most important information in biochemistry answered that infernal question.

Related Questions

As you may recall in the work of Triplett (1898), the presence of others in a bicycle race was found to enhance individual performance. This is called social facilitation (Williams, Harkins, & Karau, 2007). At times, however, the presence of others can detract from individual performance, which is termed social inhibition (Crisp & Turner, 2007). Similarly, social loafing can occur when an individualâs performance within a group decreases due to his or her reliance on others in the group (Crisp & Turner, 2007).

For this Discussion, review the media program, Week 5: The Virtual Office. Focus on the characters in the media and determine which characters displayed social facilitation, social inhibition, and social loafing.

With these thoughts in mind:

Post by Day 3 a description of the characters in the media program demonstrating social loafing, social inhibition, and social facilitation. Explain how you identified them. Then, select one of the characters and, using the current literature, explain two ways you might mitigate their behavior.

Media Program

(Onscreen Text: The employees at the United Cardboard Company often work individually on projects, but as with most environments, they are occasionally asked to participate in group projects. One such group is about to meet right now to plan a presentation for the Board of Directors. Observe the conversation and reactions of various group members to determine which group members exhibit signs of the following: Social Loafing, Social Inhibition, and Social Facilitation.)

(Interior of an office. Ken stands at the front of the conference room.)

KEN: OK, I guess we might as well all get started. As we all know, the big man has requested the five of us to get together and write and conceptualize a presentation to the board on our new packaging system. Maybe we can start by going around and throwing out some initial ideas.

KATHY: Sounds good to me. I think a PowerPoint presentation would do the job well.

GAVIN: I agree. We could follow it up with a physical demonstration of how the packaging looks and folds-- maybe a video of the larger pieces that won't fit into the boardroom.

KEN: Sounds perfect to me. Amanda, Brian, what do you guys think?

BRIAN: Yeah, what you guys said sounds fine.

(Amanda thinks, âI donât know what to say!â)

KEN: Amanda?

AMANDA: I don't know. I didn't really get much chance to think about this. We only found out we needed to do this together three days ago.

KEN: OK, no worries. Let's focus on the PowerPoint idea. I've been doing a lot of them lately, so I'm happy to take the lead on the design aspect. What do you guys think we should all incorporate into the slides?

GAVIN: I think we should start with where we got the idea for this new packaging -- the company that designed it and the different sizes that it comes in.

KATHY: We should follow that with a graph comparing the old prices to the new ones to illustrate how much we'll be saving over time. Amanda, didn't you have most of that information collected at some point?

(Amanda thinks, âOh no! What if I deleted that?)

AMANDA: I don't know, maybe, it's been so long. I didn't think I'd need it again for a group project like this.

(Gavin thinks, âI wonder whatâs gotten into her. Sheâs not usually this tense.â)

KEN: That's OK, Amanda, I'm sure we can easily dig it up again. Brian, do you have any other ideas for the PowerPoint slides?

BRIAN: Nah, I think what you guys mentioned sounds right.

(Kathy thinks, âWow. Way to contribute Brian.â)

KEN: OK then, Kathy and Gavin why don't you send me all of the info and I'll write it up and make the slides. Amanda, don't worry about the cost saving document, I'm sure I can dig it up from my old emails and put it into that slide too.

AMANDA: Are you sure? I'm happy to look. I mean I'm sure I have it somewhere. (Kathy thinks, âShe really needs to get it together. Why is she so nervous?â) At least I think I have it somewhere. You won't tell the Board of Directors if I lost it, will you?

KEN: Of course not, we're in it together. So as I was saying, I'll write up and prepare all the PowerPoint slides. Then we can start our presentation with reading and explaining each slide. Then, what?

KATHY: Well, and then I think we should show them the packaging live, and the quick deconstructing techniques.

KEN: Great idea. You and Amanda can demonstrate the folding, while I narrate what you're doing.

(Amanda thinks, âIs he doing too much of the work? And what if I drop everything while heâs talking?â)

GAVIN: And after you all demonstrate the smaller packaging, we could show a quick video of how the really big ones function down at the warehouse. Brian, would you be able to go film that quickly one of these days?

BRIAN: I don't really have any experience with video cameras or anything like that, so...

(Gavin thinks, âI should have seen that one coming.â)

KEN: That's OK. My wife actually just got me this great little camera for our anniversary. It takes great videos. So I can just run down to the warehouse, get some footage, then put it together on this new editing software I just downloaded. Maybe add a little music. It's going to be really slick!

KATHY: Are you sure, I wouldn't mind doing that too.

KEN: Oh no, it's fine. I love this kind of stuff; just leave it to me. But I suppose that's enough planning. Now it's time to get to work and make the presentation a knock out. Go team!

Some of you will have seen Starship Troopers, a moviebased upon a novel by Robert Heinlein. The film deviates from thebook in some ways, for example the book describes a visit to aplanet to resupply the dropships used in combat operations by theM.I. (mobile infantry). Heinlein describes this visit in the book;a portion of the novel is reproduced on the followingpage.

The followig passage contains two concepts we havediscussed in class in relation to the effects of mutation onpopulations, one positive and one negative. Describe the twomutation related concepts Heinlein discusses. You must describethese concepts as a biologist - you must use the technical terms wehave used in class properly and explain the positive and negativeeffect of mutation on the evolution and health of apopulation.

(a) What is the positive effect of mutation as describedby Heinlein?

(I.E., what does Heinlein describe as a benefit ofhaving more mutations)

(b) What is the negative effect of mutation as describedby Heinlein?

(I.E., what does Heinlein describe as a problem ofhaving more mutations)

I never have learned the co-ordinates of Sanctuary,nor the name or catalogue number of the star it orbits - becausewhat you donât know, you canât spill; the location isultra-top-secret, known only to shipâs captains, piloting officers,and such ... and I understand, with each of them under orders andhypnotic compulsion to suicide if necessary to avoid capture. So Idonât want to know. With the possibility that Luna Base might betaken and Terra herself occupied, the Federation kept as much ofits beef as possible as Sanctuary, so that a disaster back homewould not necessarily mean capitulation.

But I can tell you what sort of a planet itis. Like Earth, but retarded.

Literally retarded, like a kid who takes tenyears to learn to wave bye-bye and never does manage to masterpatty cake. It is a planet as near Earth as two planets can be,same age according to the planetologists and its star is the sameage as the Sun and the same type, so say the astrophysicists. Ithas plenty of flora and fauna, the same atmosphere as Earth, nearenough, and much the same weather; it even has a good-sized moonand Earthâs exceptional tides.

With all these advantages it barely got awayfrom the starting gate. You see, itâs short on mutations; it doesnot enjoy Earths high level of natural radiation.

Its typical and most highly developed plantlife is a very primitive giant fern; its top animal life is aproto-insect which hasnât even developed colonies. I am notspeaking of transplanted Terran flora and fauna - our stuff movesin and brushes the native stuff aside.

With its evolutionary progress held down toalmost to zero by lack of radiation and a consequent mostunhealthily low mutation rate, native life forms of Sanctuary justhavenât had a decent chance to evolve and arenât fit to compete.Their gene patterns remain fixed for a relatively long time; theyarenât adaptable - like being forced to play the same bridge handover and over again, for eons, with no hope of getting a betterone.

As long as they just competed with eachother, this didnât matter too much - morons among morons, so tospeak. But when types that had evolved on a planet enjoying highradiation and fierce competition were introduced, the native stuffwas outclassed.

Now all the above is perfectly obvious fromhigh school biology ... but the high forehead from the researchstation there who was telling me about this brought up a point Iwould have never thought of.

What about the human beings who havecolonized Sanctuary?

Not transients like me, but the colonists wholive there, many of whom were born there, and whose descendantswill live there, even unto the umpteenth generation - what aboutthose descendants? It doesnât do a person any harm not to beradiated; in fact itâs a bit safer - leukemia and some types ofcancer are almost unknown there. Besides that, the economicsituation is at present all in their favor; when they plant a fieldof (Terran) wheat;, they donât even have to clear out the weeds.Terran wheat displaces anything native.

But the descendants of those colonists wonâtevolve. Not much, anyhow. This chap told me that they could improvea little through mutation from other causes, from new blood addedby immigration, and from natural selection among the gene patternsthey already own - but that is all very minor compared with theevolutionary rate on Terra and on any usual planet. So whathappens? Do they stay frozen at their present levels while the restof the human race moves on past them, until they are livingfossils, as out of place as a pithecanthropus in a spaceship?

Or will they worry about the fate of theirdescendants and dose themselves regularly with X-rays or maybe setof lots of dirty-type nuclear explosions each year to build up afallout reservoir in their atmosphere? (Accepting, of course, theimmediate dangers of radiation to themselves in order to provide aproper genetic heritage of mutation for the benefit of theirdescendants.)

This bloke predicted that they would not doanything. He claims that the human is too individualistic, tooself-centered, to worry that much about future generations. He saysthat the genetic impoverishment of distant generations through thelack of radiation is something most people are simply incapable ofworrying about. And of course it is a far-distant threat; evolutionworks so slowly, even on Terra, that the development of a newspecies is a matter of many, many thousands of years.

I donât know. Shucks, I donât know what Imyself will do more than half the time; how can I predict what acolony of strangers will do? But Iâm sure of this: Sanctuary isgoing to be fully settled, either by us or by the bugs. Or bysomebody. It is a potential utopia, and, with desirable real estateso scarce in this end of the Galaxy, it will not be left in thepossession of primitive life forms that failed to make thegrade.

QUESTION 14

Regarding fiber, which one is not correct?

		If you want to add fiber in your diet also eat the seeds and skins in fruits and vegetables.
		The removal of the outer husk or bran from our wheat diminished the integrity of our grains.
		The lack of fiber in the Western diet (that's our diet) was causing gastrointestinal problems that many countries and continents had not seen: diverticulitis, diverticulosis, constipation, increase in colon cancers, etc.
		You cannot eat too much fiber.

5.00000 points

QUESTION 15

Whey protein is a protein in milk that is most efficient in building muscle.

True

False

5.00000 points

QUESTION 16

Quinoa has been around for thousands of years, it is gluten free and a complete protein.

True

False

5.00000 points

QUESTION 17

Most of us donât get enough Vitamin D since our sun exposure is limited in the northern states. Vitamin D is made in our body with the help of the ultraviolet rays from the sun being absorbed by the skin. Vitamin D is vital for our immune system, skeletal structure hormone balance, and other bodily functions.

In answering this question, the other way we can get Vitamin D is primarily by eating fruits.

True

False

5.00000 points

QUESTION 18

The hypothalamus is our brain's appetite control center.

True

False

5.00000 points

QUESTION 19

The following explains information about antioxidants but one, which one is incorrect?

		We can't stop aging or get rid of the sun or live in a perfectly clean world but we can provide our body antioxidants that will fight free radicals.
		We know from our readings antioxidants are vitamin K and the minerals biotin and selenium.
		The foods with antioxidants are: all berries are great (strawberries, blackberries, blueberries, etc.), green leafy vegetables, carrots, tomatoes, dark chocolate, nuts, kidney beans and all beans, all herbs and foods mother nature provides us.
		The most effective compounds that can fight off free radicals are antioxidants, just as the name implies they counteract oxidation, the harmful reaction that takes place.

5.00000 points

QUESTION 20

It's best to drink beverages without calories. The calories from food leave us more satisfied than fluids and it's much easier to get additional unwanted calories from sodas, juices and lattes.

True False

5.00000 points

BIOINF 463 : Chapters1-4.pdf

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