SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
Search
Test your basic knowledge |
Biology: Essential Nutrients
Start Test
Study First
Subjects
:
science
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. ___________ have different properties. Ex - fructose is sweeter.
Isomers
Maltose
100g
Micronutrients
2. __________________________ can be changed when exposed to excess heat - radiation - or change in pH.
Protein structures
glycogen
Maltose
Twenty - Twelve - Eight.
3. ______ are energy storage compounds.
Lipids
carbohydrates
Non-polar
Disaccharides
4. Nucleic acids are composed of sugar ____________ - and nitrogenous bases.
Animals
phosphate
Transport
Defense
5. _____________ contain up to 1000-6000 glucose molecules linked together.
amylopectin
dehydration
lipds
Lipids
6. Macronutrients consists of _______________ - _________ - and _______.
carbohydrates - proteins - and lipids.
carbohydrates
nitrogenous
Isomers
7. _____________ are found in plant cell walls.
Cellulose
Support
Carbohydrates
Defense
8. Phospholipids have a _______ head - and a _____________ tail.
Polar - non-polar
dehydration
1680 kJ
starch
9. The 200 000 chemical reactions that takes place in the cells of your body is called _____________.
Transport
metabolism
Motion
Carbohydrates
10. There are _____ types of protein structure.
Polar - non-polar
four
amino acid - hydrogen - carboxyl group - are-group
Transport
11. When two monosaccharides combine together - the chemical reaction is call _____________ _____________.
Hormones
Waxes
dehydration synthesis
two monosaccharides
12. Nucleic acids are composed of _______ - ____________ - and _____________ bases.
complex chemicals
Hormones
sugar - phosphate - nitrogenous
Saturated Triglycerides
13. _______ are non-polar molecules.
saturated - unsaturated
Monosaccharides
Disaccharides
Lipids
14. _______________ are made of all sugar molecules.
Carbohydrates
Macronutrients
two monosaccharides
Hormones
15. ___________ are important for long-term storage of energy.
dehydration
Carbohydrates
proteins
Lipids
16. _______________ are made of glycerol and two fatty acids and a phosphate group.
Phospholipids
Lipids
Dehydration synthesis
Carbohydrates
17. __________ = galactose + glucose
glycogen
saturated - unsaturated
Lactose
lipds
18. 100 g of fat = __________ of energy.
Key components
3870 kJ
four
Triglycerides - phospholipids - waxes - sterols
19. Starches are _______ polysaccharides - stores energy for _______.
proteins
sugar - phosphate - nitrogenous
plant
Carbohydrates
20. Carbohydrates are structural material for ______ ______.
plant cells
Hormones
plant
100 g
21. __________ are the structural components of the cell.
1680 kJ
Proteins
Hydrophilic - hydrophobic
Amylose - amylopectin
22. ____________ creates cholesterol - estrogen and pheromones.
dehydration
Unsaturated Triglycerides
Sterols
Essential amino acids
23. There are ________ types of carbohydrates.
glycogen
three
Tertiary Protein Structure
Glucose
24. Breakdown of more complex substances into simpler ones with release of energy.
Sucrose
Saturated Triglycerides
Double layered cell membrane
Catabolism
25. _______________ is the primary energy source for cells.
dehydration
three
Enzymes
Carbohydrates
26. __________________ are formed by MANY monosaccharides linked together.
Polysaccharides
energy and molecules
Lipids
Protein structures
27. _____________ is when a protein changes shape permanently.
Twenty - Twelve - Eight.
Macronutrients
Coagulation
Non-polar
28. ________ are very stable insoluble molecules. Used for waterproofing/ protection. Ex. Candles etc -.
Waxes
Fructose
Polysaccharides
100 g
29. ________________ consists of Vitamins and Minerals - and Nucleic Acids.
Cellulose
100 g
Micronutrients
Galactose
30. _____________ _____________ _____________- a single chain of sequenced amino acids.
carbohydrates - proteins - and lipids.
Primary Protein Structure
Lipids
metabolism
31. ____________: more than one sugar molecule.
Support
sugar
three
Polymers
32. Proteins create _____________ that affect growth and serve as messengers.
proteins
Proteins
Hormones
Triglycerides - phospholipids - waxes - sterols
33. All lipids are made of two structural units: ___________ - and _______ ______.
Glycerol - fatty acid
four
Lipids
glycogen
34. The three types of Polysaccharides are _____________ - _____________ - and _____________.
Triglycerides
Quartenary Protein Structure
Lipids
starch - glycogen - cellulose
35. _______________ ______________: double bonds exist between carbons - they are unstable and easy to break down. plant sources
Carbohydrates
Galactose
starch - glycogen - cellulose
Unsaturated Triglycerides
36. Carbohydrates are made of all ________ ____________.
Sterols
sugar molecules
amino acids
vitamins and minerals
37. _______________ can be found in potatoes - bread - corn - rice - fruit - etc -.
Carbohydrates
Hormones
sugar
Motion
38. Proteins are composed of ______ ______.
Protein structures
amino acids
Lipids
complex chemicals
39. _____________ molecules are not negatively or positively charged.
Maltose
amylopectin
simple sugars
Non-polar
40. There are ______ kinds of lipids.
sugar molecules
3870 kJ
Four
Double layered cell membrane
41. _____________ _____________ _____________- coils of amino acids.
Carbohydrates
metabolism
Proteins
Secondary Protein Structure
42. Proteins help form antibodies for _____________.
Defense
Animals
Four
Isomers
43. There are ________ types of carbohydrates.
carbohydrates
phosphate
three
Monosaccharides
44. Nucleic acids are composed of sugar - phosphate - and _____________ bases.
Starches
energy and molecules
Triglycerides
nitrogenous
45. __________________ are formed by MANY monosaccharides linked together.
Triglycerides
Amylose - amylopectin
Lipids
Polysaccharides
46. When two monosaccharides combine together - the chemical reaction is call _____________ _____________.
Twenty - Twelve - Eight.
Macronutrients
Lipids
dehydration synthesis
47. _____________ is when a protein changes shape temporarily.
dehydration synthesis
Denaturation
cushion - insulates
glycogen
48. _____________ are made of building blocks called amino acids. Found in meat - eggs - fish - nuts - beans - dairy.
Proteins
Hydrophilic - hydrophobic
nucleic acids
amylopectin
49. Proteins create _____________ that affect growth and serve as messengers.
Anabolism
Hormones
dehydration synthesis
nucleic acids
50. __________ = glucose + fructose.
Animals
Motion
lipds
Sucrose