Question : 31.Which of the following statements concerning lipid bilayers correct? a.Both the : 1309686

Economics

31.Which of the following statements concerning lipid bilayers is correct?

a.Both the exterior and interior surface of a lipid bilayer contain groups that are nonpolar.

b.The interior of a lipid bilayer is polar.

c.The two layers of molecules in a lipid bilayer are present in a “tail-to-tail” arrangement.

d.More than one correct response.

e.No correct response.

32.Which of the following types of lipids have structures that contain the fused-ring steroid nucleus?

a.bile acids

b.estrogens

c.glucocorticoids

d.more than one correct response

e.no correct response

33.Which of the following types of lipids are fatty acid derivatives?

a.estrogens

b.leukotrienes

c.prostaglandins

d.more than one correct response

e.no correct response

34.Which of the following statements concerning eicosanoids is correct?

a.The precursor of most eicosanoids is cholesterol.

b.Eicosanoids are hormones transported in the blood to their site of action.

c.Both thromboxanes and leukotrienes are types of eicosanoids.

d.More than one correct response.

e.No correct response.

35.Which of the following types of lipids has a “block diagram” structure that involves five components?

a.triacylglycerol

b.glycerophospholipid

c.biological wax

d.more than one correct response

e.no correct response

Use the following to answer the questions below:

In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

a) All three statements are true.

b) Two of the three statements are true.

c) Only one of the statements is true.

d) None of the statements is true.

36.Statements:

(1) Fats and oils have the same general chemical structure.

(2) Biological waxes have a three-component “block diagram.”

(3) In facilitated transport, a substance crosses a cell membrane with the help of a protein “pump.”

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

37.Statements:

(1) Bile acids are cholesterol oxidation products.

(2) Glycerophospholipids differ structurally from fats in the number of ester linkages present.

(3) Stearic acid and linolenic acids are the two essential fatty acids.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

38.Statements:

(1) Steroids have structures based on a fused-three-ring system.

(2) Glycerophospholipids and sphingophospholipids both have “head-and-two-tails” structures.

(3) Both fats and oils are TAG mixtures.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

39.Statements:

(1) Triacylglycerols can be hydrolyzed under acidic conditions to produce salts of fatty acids.

(2) Hydrogenation of a fat or oil increases its degree of unsaturation.

(3) Eicosanoids are oxygenated derivatives of polyunsaturated 18-carbon fatty acids.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

40.Statements:

(1) Cholesterol is both a steroid and a membrane lipid.

(2) Sphingoglycolipids are components of cell membranes.

(3) Sphingosine, the “platform” for sphingolipids, is an amino dialcohol.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

41.Statements:

(1) Omega-3 fatty acids are unsaturated fatty acids containing three double bonds.

(2) Prostaglandins and thromboxanes are classes of eicosanoids.

(3) In general, lipids are substances that are only sparingly soluble in water.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

42.Statements:

(1) In active transport, a substance crosses a cell membrane against a concentration gradient.

(2) Fatty acid melting point decreases with increasing degree of unsaturation.

(3) Complete hydrolysis of a TAG produces four product molecules, all of which must be different from each other.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

43.Statements:

(1) Structurally, fats contain three ester linkages and oils contain only two ester linkages.

(2) Hormones, many of which are steroids, are chemical messengers produced by ductless glands.

(3) The configuration of double bonds in naturally occurring unsaturated fatty acids is almost always trans.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

44.Statements:

(1) The “head group” in sphingolipids can be a small carbohydrate molecule.

(2) Biological waxes have structures in which an amide linkage is present.

(3) An 18:3 fatty acid contains more unsaturation than a 20:2 fatty acid.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

45.Statements:

(1) Olestra, a calorie-free fat substitute, is an indigestible sucrose polyester.

(2) “Trans-fats” affect blood cholesterol levels in a manner similar to that of unsaturated fatty acids.

(3) Anabolic steroids, banned by many sports organizations, have several important medical uses.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

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July 1, 2023

PMG654 – Portfolio Management

Final Assignment: Portfolio Presentation

Due Date: 11:59 pm EST, Wednesday of Unit 8

Points: 100

Overview:

This assignment is the final one for this course. Provide a presentation overview for

your course Project Portfolio.

Instructions:

• Use the outline you developed in the Unit 3 Assignment: Portfolio Management

Planning, updated based on review feedback, as your outline for this

presentation.

• Include the overview of your Project Portfolio from the Unit 3 Assignment.

• This assignment should demonstrate your knowledge and understanding of the

best practices for PPM.

Requirements:

• There is no slide count requirement (minimum or maximum) and no requirement

on how long to speak for each slide.

• This presentation must be in MS PowerPoint and must include audio for each

slide as if you were presenting this Portfolio to the applicable organization’s

senior management.

o Please see MS PowerPoint Help or Tutorials, which you may find on the

Microsoft website, for assistance with how to record audio for

PowerPoint slides. You may also find helpful videos on YouTube.

Be sure to read the criteria by which your work will be evaluated before you write
and again after you write.

Evaluation Rubric for Portfolio Presentation Assignment

CRITERIA Deficient Needs
Improvement

Proficient Exemplary

0-11 points 12-15 points 16-19 points 20 points

Proper use of
terms and
concepts from
the course

Terms and
concepts from
the course are
missing or
inadequate.

Terms and
concepts from
the course are
minimally used
or are
improperly used.

Terms and
concepts from
the course are
properly used.

Exceptional
use of terms
and concepts
from the
course.

Summary of
your Project
Portfolio

Project
Portfolio
Summary is
missing or
inadequate.

Project Portfolio
Summary needs
improvement.

Project
Portfolio
Summary is
adequately
provided.

Project
Portfolio
Summary is
exemplary.

0-17 points 18-23 points 24-29 points 30 points

Portfolio
Management
Plan overview
based on
PMBOK Guide
areas which
should be
included in
this plan

Project
Portfolio
Management
Plan is missing
or inadequate.

Project Portfolio
Management
Plan needs
improvement.

Project
Portfolio
Management
Plan is
adequately
provided.

Project
Portfolio
Management
Plan is
exemplary.

0-5 points 6-7 points 8-9 points 10 points

Resources No resources. 1 resource
beyond course
readings.

2 resources
beyond course
readings.

More than 2
resources
beyond course
readings.

0-11 points 12-15 points 16-19 points 20 points

Clear and
Professional
Writing,
Presentation
and APA
Format

Writing, slide
presentation
(visual and
audio) and
format are not
clear. Errors
impede
professional
presentation;
guidelines not
followed.

Writing, slide
presentation
(visual and
audio) and
format are
somewhat clear.
Significant errors
that may impede
professional
presentation.

Writing, slide
presentation
(visual and
audio) and
format are
clear. Few
errors that do
not impede
professional
presentation.

Writing, slide
presentation
(visual and
audio) and
format are
clear,
professional,
APA compliant,
and error free.

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