BIOLOGICAL MOLECULES: LIPIDS

BIOLOGICAL MOLECULES: LIPIDS

11th Grade

13 Qs

quiz-placeholder

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BIOLOGICAL MOLECULES: LIPIDS

BIOLOGICAL MOLECULES: LIPIDS

Assessment

Quiz

Biology

11th Grade

Medium

Created by

ANIS SALIM

Used 13+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Lipid consists elements of

carbon, oxygen, hydrogen, sulphur

carbon, hydrogen, oxygen, nitrogen

carbon, oxygen, phosphorus

carbon, oxygen, hydrogen

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Although carbohydrates and lipids are made of the same elements, they dissolve in different types of solvents, as

carbohydrates dissolve in nonpolar solvents while lipids dissolve in polar solvents

monosaccharides dissolve in nonpolar solvents, like water, while oils dissolve in polar solvents, like benzene

polysaccharides dissolve in polar solvents, like carbon tetrachloride, while waxes dissolve in nonpolar solvents

monosaccharides dissolve in polar solvents, like water, while oils dissolve in nonpolar solvents, like benzene

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Xerophytes are plants that have adapted to live in dry conditions. How do lipids contribute to reducing water loss during transpiration in xerophytes leaves?

Xerophyte leaves have a high phospholipid content that reduces water loss.

Xerophytes have waxy leaves that reduce water loss.

Xerophyte leaves have a low oil content that reduces water loss.

  • Xerophyte leaves have a low phospholipid content that reduces water loss.


4.

OPEN ENDED QUESTION

3 mins • 1 pt

Write an equation of formation of trigycerides

Evaluate responses using AI:

OFF

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is used to dissolve lipids?

Carbon tetrachloride only

Benzene only

Water

  • Both carbon tetrachloride and benzene


6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Oil is always in a liquid state at room temperature. What could prevent oil from solidifying in the fridge?

Its low glucose content

Its high melting point

Its high phosphate content

Its unsaturated fatty acids

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The lipids forming the main component of cell membranes of animal cells are different from other lipids because they have ...

phosphorus (P)

calcium (Ca)

oxygen (O)

hydrogen (H)

Answer explanation

The lipids forming the main component of cell membranes are complex lipids called phospholipids. They are complex because, in addition to the alcohol (glycerol) and fatty acids that form simple lipids (e.g., fats, oils, and waxes), they contain a phosphate group and often an additional choline group, which contains a phosphorus (P) atom and a nitrogen (N) atom respectively. The phosphate group (that is present in every phospholipid) is the reason phospholipids are different from many other lipids, as simple lipids only consist of carbon, hydrogen, and oxygen atoms.

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