Select all of the following that serve to provide examples...

Select all of the following that serve to provide examples of the functions of proteins. Check All That Apply Lactase is an enzyme that is responsible for breaking down lactose into usable sugars within the stomach. Hemoglobin transports oxygen within blood in the body. Lignin acts to provide structural support in plant cells. Insulin is a hormone produced by the pancreas in response to increased blood sugar levels. Microfilaments within cells are composed of actin and help transport substances. Estrogen and testosterone are sex hormones produced in the ovaries and testes.

Transcript

00:01 Next question we need to write that what serves here the function of the protein.

00:07 So here the number 1 is that atp provides the chemical energy for cells.

00:13 So atp here get hydrolyzed into adp plus pi and this phosphorylates the enzymes for the further signal to take place.

00:23 But here this is not the function of the protein and this here is a nucleotide not a protein so this will not be included.

00:32 Then there it says that lignin act to provide the structural support in plant cell.

00:38 So lignin here is the saccharide not a protein so that is why this will also not be included.

00:47 Then it says that keratin makes up the hair and nails providing them with strength and support.

00:55 So keratin is the type of the protein that is present in the intermediate filament and it provides the strength and support.

01:05 So this here will be included as the function of the protein.

01:10 Then here it says that hemoglobin transports the oxygen within the blood in the body.

01:18 So this hemoglobin is a globular protein that is hydrophilic and it dissolves in the blood and combines with oxygen to produce the oxyhemoglobin and transport the oxygen to all the tissues.

01:34 So this is also included in the function of the protein.

01:38 Then it says that the microfilaments within the cell are composed of the actin and help transport substances.

01:46 So that is also correct.

01:48 The actin here is a protein that is a power protein of the microfilament...

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