biology
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- Created by: millxxie04
- Created on: 30-07-18 01:31
describe cytoplasm -
where chemical reactions take place.
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describe a cell membrane -
allows movement into and out of the cell.
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describe the nucleus -
contains the genetic information and controls what the cell does.
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where are ribosomes located in the cell ? -
ribosomes are in the cytoplasm.
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including cytoplasm and the nucleus, what else is generally found in a cell ? -
mitochondria.
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what is the use of mitochondria ? -
to produce energy to swim.
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inside the nucleus of every cell they is .. what ? -
chromosomes.
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what is the function of chromosomes ? -
to carry genetic information in the form of genes.
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chromosomes including the nucleus of each cell contains .. what ? -
a complete set of genetic codes/instructions.
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How is the genetic codes carried ? -
they are carried by genes on chromosomes.
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describe the formation of chromosomes -
they are long coiled molecules of DNA.
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what chemical is genes made of ? -
DNA ( deoxyribonudeic acid ).
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how many pairs of chromosome are in an average cell ? -
23 pairs.
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what does DNA control ? -
the production of proteins.
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what is the formation of a DNA molecule ? -
its made of two strands coiled around each other in a double helix (spiral).
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name the 4 bases found in a DNA molecule ? -
A,C,G AND T.
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name the base complentary pairing in a DNA molecule ? -
A pairs with T, C pairs with G.
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describe the cell division (mitosis) ? -
mitosis is when a cell reproduces itself by splitting from two identical off spring.
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what is mitosis used for ? -
when plants/animals want to grow or to replace cells that have been damaged.
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what does meosis produce ? -
four haploid cells whose chromsomes are not identical.
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in humans where does a human use meosis ? -
in the reproductive organs (ovaries and testes).
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what is a gene ? -
a gene is a short length of the chromsome.
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name the three sources of genetic variation -
- gamete formation - fertilisation - mutations - .
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describe what gamete formation -
making sperm and egg cells.
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describe fertilisation -
the gametes join together.
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describe mutations -
changes to the genetic code.
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describe the nervous system -
its what lets you react to what goes on around you.
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name the five different sense organs -
eyes , ears , nose , tongue and skin.
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Other cards in this set
Card 2
Front
allows movement into and out of the cell.
Back
describe a cell membrane -
Card 3
Front
contains the genetic information and controls what the cell does.
Back
Card 4
Front
ribosomes are in the cytoplasm.
Back
Card 5
Front
mitochondria.
Back
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