Checking the basics: Biology Topic 2


HideShow resource information
What is osmosis?
Osmosis is the net movement of water molecules from a region of high concentration of water molecules to a region of low concentration across of partially permeable membrane.
1 of 16
Define the process of transcription.
This is the process where DNA partly unwinds and forms a template strand. From this, mRNA can be formed through the use of complementary nucleotides.
2 of 16
Define the process of translation.
This is the process where the mRNA strand is used to control the production of a polypeptide chain by a ribosome.
3 of 16
Define the process of DNA replication.
DNA replication is the process where by two identical strands of DNA are formed. The process is called semi-conservative replication.
4 of 16
Define the term gene.
A length of DNA which codes for a single polypeptide/protein.
5 of 16
Define the term allele.
A particular form of a gene.
6 of 16
Define the term genotype.
Combination of alleles that affect the inheritence of a phenotypic feature.
7 of 16
Define the term phenotype.
Characteristics of an organism which result both from the alleles it possesses and the environment in which it has developed.
8 of 16
Define the term locus.
The specific site on a chromosome where a gene/allele is located.
9 of 16
Define the term dominant.
The allele that will be expressed even if it is paired with a recessive allele.
10 of 16
Define the term recessive.
An allele that will only be expressed when paired with another recessive allele.
11 of 16
Define the term heterozygous.
Having alleles at different places/Loci.
12 of 16
Define the term homozygous.
Having alleles at the same place/Loci.
13 of 16
Define gene therapy.
This is the use of 'normal' gene's being placed into cells with defective genes to try and correct the issue.
14 of 16
Define somatic cells.
These are all cells with the exception of reproductive cells (sperm/egg cells)
15 of 16
Define Germ cells.
A cell containing half the number of chromosomes of a somatic cell. (Reproductive cells)
16 of 16

Other cards in this set

Card 2

Front

Define the process of transcription.

Back

This is the process where DNA partly unwinds and forms a template strand. From this, mRNA can be formed through the use of complementary nucleotides.

Card 3

Front

Define the process of translation.

Back

Preview of the front of card 3

Card 4

Front

Define the process of DNA replication.

Back

Preview of the front of card 4

Card 5

Front

Define the term gene.

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all DNA, genetics and evolution resources »