Grade 10 Bio
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What is an organic compound?
Contains Carbon and hydrogen
What elements are contained in carbohydrates?
C, H, O in a 1:2:1
What are the building blocks of proteins?
What elements are in proteins?
C, H, O, N and sometimes S
What is the smallest unit of a carbohydrate?
Glucose is an example of a...
By what process do two monosaccharides bind together?
Condensation reaction (water is removed)
How do you split a disaccharide?
Hydrolysis (water splitting)
Give 3 examples of polysaccharides
What is the test for starch?
Iodine (goes blue black if starch is present)
What is the test for simple sugars
Benedicts (goes orangey red)
What is the test for Protein?
- Biuret test
- Potassium hydroxide and copper sulphate
What are the tests for fats?
- Emulsion test
- Grease spot test
What are the bases of DNA?
What does DNA stand for?
What are the three parts of a nucleotide?
base, phosphate and deoxyribose sugar
How is sex determined?
- Chromosome pair 23
- XY = male
- XX = female
- Sex is inherited
- X chromosome is longer than Y
What is the difference between meiosis and mitosis?
- Meiosis = only in ovaries and testes. Makes gametes (sex cells)
- Mitosis = used in all cells except ovaries/testes. Used in growth, replacement, repair
What are the 4 kinds of base in DNA?
What does haploid mean?
Half the genetic information (HAploid = HAlf)
What's a gene locus?
The position of a gene on a chromosome
What is an enzyme?
A biological catalyst
What are differences between biological and chemical catalysts?
- Biological = made from protein and can be denatured by high temperature or wrong pH
- Chemical = not made of protein, can't be denatured
Where does a substrate bind on an enzyme?
What is the independent variable?
The variable that you manipulate or change in an experiment. You must only have ONE of these.
What is the dependent variable?
The one that you record or measure as you are doing the experiment.
What are the controlled variables?
You should have many of these. These are the things that you are keeping the same so that it is a fair test.
If you are making a genetic cross with ONE trait this is called....
A capital letter in genetic crosses refers to...
A lower case letter in genetic crosses refers to....
In genetic crosses RR is...
In genetic crosses rr is...
In genetic crosses Rr is...
What would you like to do?
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