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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. Macronutrients consists of carbohydrates - __________ - and lipids.
Glycerol - fatty acid
dehydration synthesis
proteins
three
2. There are ________ types of carbohydrates.
three
Macronutrients
Sucrose
Nucleic Acids
3. ___________ are important for long-term storage of energy.
Lipids
Defense
vitamins and minerals
Hydrolysis
4. ___________ are important for long-term storage of energy.
Galactose
synthesis
Glucose
Lipids
5. ______ are the structural components of cell membranes.
Protein structures
Tertiary Protein Structure
Double layered cell membrane
Lipids
6. Proteins are composed of ______ ______.
amino acids
Motion
amylopectin
Coagulation
7. ______________ are made of two monosaccharides combined together.
Primary Protein Structure
Disaccharides
cushion - insulates
starch
8. ______ of carbs = 1680 kJ of energy.
Carbohydrates
carbohydrates
100 g
four
9. ___________ have different properties. Ex - fructose is sweeter.
Phospholipids
Double layered cell membrane
Glucose - Galactose - Fructose
Isomers
10. _____________ contain many branches that make up 24-36 glucose molecules.
amylopectin
four
Maltose
Glycerol - fatty acid
11. ____________: when molecules have the same chemical formula but different structures.
sugar
Isomers
starch - glycogen - cellulose
Non-soluble
12. 100 g of fat = __________ of energy.
Carbohydrates
1680 kJ
Twenty - Twelve - Eight.
3870 kJ
13. _____________ ________ _____ are the eight amino acids our body cannot make.
100g
Essential amino acids
Hydrophilic - hydrophobic
Carbohydrates
14. Lipids are ____ ______________ in cell membranes.
Unsaturated Triglycerides
Key components
100g
Isomers
15. Triglycerides can be _____________ - or _______________.
carbohydrates
Twenty - Twelve - Eight.
four
saturated - unsaturated
16. ____________: when molecules have the same chemical formula but different structures.
glycogen
Carbohydrates
Twenty - Twelve - Eight.
Isomers
17. The two types of starches are ___________ - and ______________.
Amylose - amylopectin
Catabolism
Lactose
Non-polar
18. ____________ _______ are genetic material that directs cell activity.
two monosaccharides
Hormones
Nucleic Acids
Double layered cell membrane
19. __________ = galactose + glucose
Transport
phosphate
Quartenary Protein Structure
Lactose
20. When two monosaccharides combine together - the chemical reaction is call _____________ _____________.
sugar - phosphate - nitrogenous
carbohydrates - proteins - and lipids.
Cellulose
dehydration synthesis
21. The two types of starches are ___________ - and ______________.
Amylose - amylopectin
Polysaccharides
Isomers
Transport
22. Starches are _______ polysaccharides - stores energy for _______.
Hydrolysis
dehydration
plant
Lactose
23. _______________ ______________: double bonds exist between carbons - they are unstable and easy to break down. plant sources
Unsaturated Triglycerides
3870 kJ
plant cells
peptide bond
24. Nucleic acids are composed of sugar ____________ - and nitrogenous bases.
Enzymes
amino acid - hydrogen - carboxyl group - are-group
amylopectin
phosphate
25. Proteins help keep our cells and muscles in _________.
Micronutrients
Motion
carbohydrates - proteins - and lipids.
Monosaccharides
26. Proteins create ___________ that bring reactants together faster or slower.
Support
Enzymes
Sucrose
starch
27. _______________ can have one single sugar molecule or can be polymers.
Catabolism
amylopectin
Carbohydrates
vitamins and minerals
28. _____________ _____________ _____________- coils of amino acids.
100 g
Proteins
Secondary Protein Structure
four
29. _____________ contain up to 1000 glucose molecules linked together.
1680 kJ
amylose
carbohydrates
Twenty - Twelve - Eight.
30. __________ = glucose + glucose.
Maltose
Waxes
metabolism
Polymers
31. Nucleic acids are composed of sugar - phosphate - and _____________ bases.
nitrogenous
Lipids
Micronutrients
Proteins
32. Some examples of Monosaccharides are _________ - Galactose - Fructose.
vitamins and minerals
Anabolism
Animals
Glucose
33. All lipids are made of two structural units: ___________ - and _______ ______.
Starches
Glycerol - fatty acid
Phospholipids
Motion
34. Micronutrients consists of __________ _____ _________ - and Nucleic Acids.
vitamins and minerals
1680 kJ
Essential amino acids
carbohydrates - proteins - and lipids.
35. Phospholipids forms a _________ _____________ _____________ _____________ that is essential for structure and function.
Protein structures
sugar - phosphate - nitrogenous
Double layered cell membrane
Protein structures
36. _____________ are plant polysaccharides - stores energy for plants.
Nucleic Acids
Starches
Polysaccharides
Lipids
37. _______ are non-polar molecules.
nucleic acids
Dehydration synthesis
Lipids
3870 kJ
38. _____________ store energy in the form of fat.
saturated - unsaturated
Lipids
Hydrophilic - hydrophobic
Polymers
39. _______________ is the primary energy source for cells.
Carbohydrates
vitamins and minerals
dehydration synthesis
Triglycerides
40. ________________ usually have a molecular formula ratio of C:H:O in 1:2:1.
proteins
Lipids
Monosaccharides
Polysaccharides
41. ________________ usually have a molecular formula ratio of C:H:O in 1:2:1.
Monosaccharides
Four
three
Secondary Protein Structure
42. Proteins help _____________ important substances to different areas of the body.
amino acid - hydrogen - carboxyl group - are-group
proteins
Transport
Monosaccharides
43. __________________________ can be changed when exposed to excess heat - radiation - or change in pH.
Isomers
Protein structures
Lipids
Quartenary Protein Structure
44. __________________ are formed by MANY monosaccharides linked together.
Non-soluble
Proteins
Unsaturated Triglycerides
Polysaccharides
45. Monosaccharides are also called ________ __________.
Protein structures
plant
simple sugars
Carbohydrates
46. ______________ _______________ : single bonds exist between carbons - they are stable and hard to break down so they will remain in our body longer. animal sources
Saturated Triglycerides
Fructose
Dehydration synthesis
Dehydration synthesis
47. _______________ ______________: double bonds exist between carbons - they are unstable and easy to break down. plant sources
Unsaturated Triglycerides
glycogen
phosphate
Catabolism
48. ___________: to lose a water molecule.
Cellulose
Lipids
Non-soluble
dehydration
49. When two monosaccharides combine together - the chemical reaction is call _____________ _____________.
Transport
dehydration synthesis
Transport
amylopectin
50. Some examples of Monosaccharides are _________ - ___________ - __________.
complex chemicals
saturated - unsaturated
Isomers
Glucose - Galactose - Fructose