Predicted Flashcards

1
Q

when the new three-domain system was introduced dogs were classified into eukaryotic
-explain how the three domain system was developed

A
  1. based on DNA and biochemical evidence
  2. prokaryotes split into twos groups
  3. archaea primitive/ simple bacteria
  4. prokaryotic/ bacteria true modern bacteria
    5.eukaryotic includes (protistts, fungi) plants and animals
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2
Q

Give two pieces of evidence that scientists can use to show that dogs are closely related?

A

-fossils
-dna
-similarties in structure

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3
Q

give one reason why using binomial names?

A

-same name used by everyone
-genus gives information on ancestry

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4
Q

advantages and disdavtages of sexual reproduction?

A

-gentic variability
-better survival/ more suited

–hard to find organisms to reproduce with
-not all dan is passed on

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5
Q

adavatges and disadaavtegs of asexual reproduction?

A

-no need to find mate
-all dan passed on

-gentically vulnerable
-not as suited to environment

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6
Q

why are people against gm?

A

-possible harm to humans when eaten
-damadeg to food cahins
-genes may spread to the wild
-untural

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7
Q

why is deformation more common in tropical regions?

A

-incrase human pop
-incarses standard living
-so more food/ fuel needed

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8
Q

sugest a reason for incase in wildfires?

A

-global warming
-less rain/more droughts

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9
Q

why is energy lost at each trophic level?

A

1-materail lost in waste
2-dont eat all the matter

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10
Q

why is DNA a polymer?

A

-made up of reapeating units called nucleotides
-joined and bonded together

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11
Q

two ways to reduced the chance of resistance antibiotics?

A

-dont give for mild infections because they ill get better due body immune system
-dont use for viral infections becaus eantboitics don’t kill viruses
-finish the whole course so no bacteria is left to develop resistant strains

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12
Q

two example of automatic responses?

A

-blinking
-pupil dilating
-sneezing
-pupil dilating

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13
Q

what hormone stimulates ovulation?

A

LH

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14
Q

What two hormones produced by pituitary galnd?

A

LH
FSH

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15
Q

How is a sperm cell adapted for its purpose of fertilseing?

A

-lots mitrocndria to realise energy or transfer energy
-tail to swim to egg

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