Question

A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

A. DNA
B. Strong base
C. Phospholipid
D. Protein

Answer 1

What, are you just quizzing people?

Answer 2

It's not DNA...

Answer 3

No @InYourHead

Answer 4

Yeah it's not DNA.

Alanine, Tyrosine, and Lysine are all amino acids.

You know what amino acids make, when they chain together?

Answer 5

No

Answer 6

Proteins.

Answer 7

Is it 'D'

Answer 8

What is protein?

Answer 9

Chains of amino acids.
They're the building blocks of what makes us. Like lego pieces.

Answer 10

These little things:
http://3.bp.blogspot.com/_PFrXn0H2Cao/TU2ppuU5JcI/AAAAAAAABeE/jLd8_rZTcMc/s400/IMG_0507.JPG

We use them to build bigger things.

You ever seen them?

Answer 11

Well, we basically put them together and build things with them.

That's kind of like what proteins are.

Proteins are used to build us.

Answer 12

Proteins are used to build our cells?

Answer 13

Protein molecule is constructed frm chains of compounds called amino acids,which contain carbon, hydrogen, oxygen, nitrogen as well as occasionally sulphur.proteins also play i mportant role in repairing n re.generating body tissues,and are key player in growth process...

Answer 14

Yeah.

Our cells are more than just proteins, of course.
There's nucleic acids and lipids and carbohydrates too.

Most of our bodies are water. About 60% water.

What is not water is mostly protein.

Answer 15

@xxAshxx Why proteins contain carbon.,hydrogen,oxygen,nitrogen ?
You said
Protein molecule is constructed frm chains of compounds called amino acids,which contain carbon, hydrogen, oxygen, nitrogen as well as occasionally sulphur

Answer 16

Carbon, hydrogen, oxygen, and nitrogen are the basic elements in amino acids.

We have to think of one level at a time.

Carbon, hydrogen, oxygen, and nitrogen are at the atomic level.

The next level up is the molecular level. That's amino acids and proteins.

Answer 17

Our body has more water than proteins?@InYourHead
What is not water is mostly protein. ?

Answer 18

Yes.

Answer 19

Got it

Answer 20

Explain me phospholipids

Answer 21

Here's a picture of a phospholipid:
http://www.freethought-forum.com/images/anatomy2/phospholipid.gif

It's a lipid, with at least one phosphate group attached to it.

Do you know what a cell membrane looks like?

Our cell membranes have two layers of phospholipids.

Answer 22

It looks like a plastic bag wid small holes

Answer 23

So you already know what a phospholipid looks like.

It has a round head and two tails.

Like this:



Here's a cell membrane:
http://citadel.sjfc.edu/students/map01009/e-port/ppt/cell_membrane.png