Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Lipids Quiz Study Guide > Flashcards

Lipids Quiz Study Guide Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

What type of bonds do saturated have?

A

They have single bonds between all carbons

Saturated fats are usually solid at room temperature.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the structure of unsaturated fats?

A

Contains double bonds between carbon atoms

Unsaturated fats usually hold fewer hydrogen atoms and are typically liquid at room temperature.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the two types of triglycerides?

A
  • Fats - solid at room temperature
  • Oils - liquid at room temperature

Triglycerides are composed of three fatty acids and glycerol.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the main functions of triglycerides?

A

Major reservoirs of energy

Triglycerides store energy in the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What distinguishes waxes from other lipids?

A

Long fatty acid chains and very insoluble in water

Waxes are hydrophobic and provide protective waterproof layers on plants and animals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Fill in the blank: Unsaturated fats typically hold fewer _______ atoms.

A

hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True or False: Saturated fats are usually liquid at room temperature.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the primary role of lipids in biological systems?

A

Energy storage and protective functions

Lipids include triglycerides, waxes, and other forms that serve various functions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the four types of lipids mentioned?

A
  • Triglycerides
  • Waxes
  • [Additional types not provided in the text]

The content primarily discusses triglycerides and waxes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are fatty acids?

A

Building blocks of lipids

Fatty acids are long hydrocarbon chains that are crucial for various biological functions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the primary function of lipids?

A

Energy storage, cellular structure, signaling

Lipids play key roles in forming cell membranes and storing energy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a carboxyl group?

A

A combination of a carbon atom bonded to a hydroxyl group and double-bonded to an oxygen atom

Carboxyl groups are characteristic of fatty acids and amino acids.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Lipids include which types of molecules?

A

Fatty acids, triglycerides, phospholipids, steroids

Each type of lipid has distinct functions in biological systems.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

True or False: All fatty acids are the same.

A

False

There are different types of fatty acids, including saturated and unsaturated.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Fill in the blank: Fatty acids can be classified as _______.

A

[saturated or unsaturated]

Saturated fatty acids contain no double bonds, while unsaturated fatty acids contain one or more double bonds.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What role do amino acids play in the body?

A

Building blocks of proteins

Amino acids are essential for protein synthesis and various metabolic processes.

17
Q

What do all lipids have in common regarding solubility?

A

All lipids are insoluble in water (hydrophobic)

This characteristic differentiates lipids from other biological macromolecules.

18
Q

What are the monomers of lipids?

A

Fatty acids

Fatty acids are the building blocks of various lipids.

19
Q

What is the structure of fatty acids composed of?

A

Hydrocarbon chain and a carboxyl group

The hydrocarbon chain is a long chain of carbon atoms, while the carboxyl group is a functional group that defines fatty acids.

20
Q

Fill in the blank: Saturated fatty acids hold as much _______ as possible.

A

hydrogen

21
Q

What does it mean for a fatty acid to be saturated?

A

It contains 100% of hydrogens

Saturated fatty acids do not contain double bonds between carbon atoms.

22
Q

What is the chemical representation of a saturated fatty acid?

A

H - C - C - C - C - C - C

Each ‘C’ represents a carbon atom, which is bonded to hydrogen atoms.

23
Q

What is a phospholipid?

A

A molecule consisting of fatty acids and a phosphate group

Phospholipids are fundamental components of cell membranes.

24
Q

What are the main components of phospholipids?

A
  • Fatty acids
  • Phosphate group

These components contribute to the structure and function of cell membranes.

25
Q

What is the primary role of phospholipids in the cell?

A

They are the main material of cell membranes

Phospholipids form a bilayer that separates intracellular fluids from extracellular fluids.

26
Q

How are phospholipids structured?

A
  • Hydrophilic heads
  • Hydrophobic tails

This unique structure allows them to form bilayers in aqueous environments.

27
Q

Fill in the blank: Phospholipids have _______ heads and _______ tails.

A

hydrophilic; hydrophobic

This characteristic is crucial for their function in membrane formation.

28
Q

True or False: Phospholipids can be found in bilayers.

A

True

The bilayer formation is essential for the structure of cell membranes.

29
Q

What do phospholipids separate within a cell?

A

Intracellular fluids from extracellular fluids

This separation is vital for maintaining cellular homeostasis.

30
Q

What are the primary characteristics of steroids?

A

Composed of 4 carbon rings; no fatty acids; insoluble in water.

Steroids include hormones like estrogen and testosterone.

31
Q

True or False: All lipids are soluble in water.

A

False

All lipids are insoluble in water.

32
Q

Fill in the blank: Steroids are composed of _______ carbon rings.

A

4

This structure is a defining characteristic of steroids.

33
Q

List three types of substances that can be classified as steroids.

A
  • Estrogen
  • Testosterone
  • Neurotransmitters

These substances play various roles in the body.

34
Q

What is the significance of steroids in the human body?

A

They function as hormones and play roles in nerve tissue and venom.

Steroids are crucial for various physiological processes.

35
Q

What are the 4 types of lipids??

A

Triglycerides, waxes, Phospholipids, Steroids

Biology (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions