Everything Life Sciences Grade 10

survival of living organisms. Each of these molecule classes consists of polymeric compounds made up of individual monomers. Che ...

a) What is the polymer A that is found in an animal cell? b) What is the function of polymer A in the body? The table below giv ...

The graph below illustrates that enzymes: a) are pH-specific b) catalyses a specific substrate c) are denatured at high pH d) ...

Explain briefly how you would test for glucose. Study the graph below. The graph shows total protein (in grams) present in a 10 ...

Meals Energy (in kJ) Vitamin C (in mg) Calcium (in mg) X 2900 25 70 Y 2100 47 265 Z 2600 40 170 a) Name three polysaccharide car ...

a) How many servings does a person need to provide the RDA of energy? b) Which organic compounds are the most important energy p ...

a) Name the nutrients tested for in each of the experiments numbered A, B, C & D. b) Identify the chemicals numbered 1, 2 an ...

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CHAPTER^3 The basic units of life 3.1 Overview 62 3.2 Molecular make up of cells 62 3.3 Cell structure and function 70 3.4 Cell ...

3 The basic units of life 3.1 Overview Introduction DUMMY ”In the year of 1657 I discovered very small living creatures in rain ...

FACT Sections for TEM have to be so thin that they have to be prepared using a special piece of equipment called an ultramicroto ...

Figure 3.5: Light microscope 64 3.2. Molecular make up of cells ...

Part of the microscope Description Ocular lens/ eyepiece - A cylinder containing two or more lenses. These lenses are held at t ...

FACT WARNING:if using a mirror for illumination instead of a light bulb, never reflect direct sunlight as you could damage your ...

Calculating magnification DUMMY Microscopes magnify an image by use of lens found in the eye-piece, which is also known as theoc ...

If magnification is increased 10-fold, the field of view will decrease 10 fold. Thus it will become 0.1 mm. What this means is t ...

Figure 3.7: A beetle larva as seen under a light microscope. SOLUTION Step 1: Calculate the total magnification Use the same for ...

Figure 3.8: Electron micrograph showing rough endoplasmic reticulum with a scale bar given SOLUTION Step 1: Measure the length A ...

FACT DNA (the hereditary information of cells) is passed from ’parent’ cells to ’daughter’ cells during cell division. You will ...

FACT The human body cannot break down the cellulose in cell walls because we do not produce the enzyme cellulase. Primary cell w ...