Science Double Award - 4SD0 PearsonEdexcel

Biological Molecules

Akopọ

The food you eat, the muscles that move you, and the membranes that hold your cells together are all made from the same small set of biological molecules. Understanding how carbohydrates, proteins and lipids are built, tested for, and broken down is central to biology.

This lesson covers the chemical elements in each molecule group, how small units join to form large ones, practical food tests you need to know, and the role of enzymes as biological catalysts, including how temperature and pH affect their activity.

Awọn Afojusun

  1. Identify the chemical elements present in carbohydrates, proteins and lipids (fats and oils)
  2. Describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units
  3. Investigate food samples for the presence of glucose, starch, protein and fat
  4. Understand the role of enzymes as biological catalysts in metabolic reactions
  5. Understand how temperature changes can affect enzyme function, including changes to the shape of active site
  6. Investigate how enzyme activity can be affected by changes in temperature
  7. Understand how enzyme function can be affected by changes in pH altering the active site

Akọ̀wé Ẹ̀kọ́

Every reaction in a living organism depends on molecules built from just a handful of chemical elements. A loaf of bread, a steak, and a pat of butter look completely different, yet each is assembled from carbon, hydrogen and oxygen, with proteins adding nitrogen (and sometimes sulfur). Knowing which elements are present, how the molecules are structured, and how to detect them in the lab gives you the toolkit for the rest of biology.

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Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Biological Molecules. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  1. Which elements are found in proteins but not in carbohydrates? A) Carbon and hydrogen B) Nitrogen and sometimes sulfur C) Oxygen and hydrogen D) Carbon and oxygen Answer: B
  2. What colour change indicates a positive Benedict's test? A) Blue to violet B) Orange-brown to blue-black C) Blue to orange/brick red D) Blue to green Answer: C
  3. What is the basic unit of a protein? A) Glucose B) Fatty acid C) Amino acid D) Glycerol Answer: C
  4. What happens to an enzyme at temperatures above its optimum? A) It works faster B) It is denatured C) It dissolves D) It reproduces Answer: B
  5. Which reagent is used to test for starch? A) Benedict's solution B) Biuret solution C) Ethanol D) Iodine solution Answer: D

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
O wa lori Android, Windows, macOS, ati Linux

Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe

Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Biological Molecules? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.

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