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BYA1 revision
revision questions for BYA1
18
Biology
12th Grade
12/13/2007

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Cards

Term
Which 3 organelles are involved in protein synthesis?
Definition
Nucleus, Ribosomes Golgi apparatus
Term
Do electrons have shorter or longer wavelengths than light?
Definition
Shorter
Term
What is the main differenec between prokaryotic and eukaryotic cells?
Definition
Nucleus in eukaryotic cells is enclosed in a membrane
Term
In ultracentrifugation do slow or fast speeds yield the greatest mass?
Definition

Slow

Term
What do enzymes do to make reactions happen more easily
Definition
Lower the activation energy
Term
What is the equation for Ficks Law
Definition
Surface area x difference in concentration/thickness
Term
Do bacteria have mitochondria
Definition
No
Term
Would water move from a water potential of -0.6 to -0.7
Definition
No
Term
Is lipid hydrophilic or hydrophobic
Definition
Hydrophobic
Term
Does facilitated diffusion move substances against the concentration gradient?
Definition
No
Term
During exhalation is the diaphragm contracted or relaxed
Definition
Relaxed
Term
Draw its shape
Definition
Dome
Term
In order for inhalation to occur does the pressure inside the lungs have to be greater or smaller than the pressure outside
Definition
smaller
Term
Which part of the brain controls breathing
Definition
Medulla
Term
Which nerve takes impulses to the diaphragm
Definition
Phrenic
Term
What does the chemoreceptor in the carotid artery detect
Definition
CO2
Term
Faeces contain protein. Other than undigested protein give 2 sources of that protein
Definition
enzymes,hormones,blood protein
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