exam questions- 1 markers Flashcards
who proposed the theory that said that changes in an organism during its life could be inherited
Jean Baptiste Lamark
give one reason why a species might become extinct
changes to their environment
describe one problem that inbreeding causes
more likely to pass on recessive disorders
a student plans an investigation using mold
mold spores are hazardous
give one safety precaution the student should take when doing this investigation
wear a face mask
a woman has a head injury
her symptoms include:
-finding it difficult to name familiar objects
- not being able to remember recent events
suggest what part of her brain has been damaged
cerebral cortex
a man has a head injury
he staggers and sways as he walks
suggest which part of his brain has been damaged
cerebellum
the structure of dna has four different bases which always pair up in the same pairs
what are they
1) A/ adenine and T/ thymine
2) C/ cytosine and G/ guanine
a persons muscles may require more glucose when in cold water compared to warm water explain why
when the body gets cold the muscles may contract rapidly to warm the body up
the increased muscle contractions mean that more energy is needed so the rate of respiration in the muscles increases meaning more glucose is required
describe how the visual cortex recieves information that allows us to see
light entering the eye is detected by receptors on the retina
nervous inpulses are then sent from the receptors to the visual cortex, via the optic nerve.
