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yaroslaw [1]
3 years ago
9

Is Sirius B brighter or dimmer than the sun ?

Biology
2 answers:
gtnhenbr [62]3 years ago
8 0
Normally, the only objects that outshine Sirius in our heavens are the sun, moon, Venus, Jupiter, Mars and Mercury (and usually Sirius outshines the latter two!).
Lorico [155]3 years ago
5 0
Sirius B is brighter than the sun.
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Predict what would happen to muscles if a pesticide that inhibits acetylcholinesterase was present at the motor end plate.
Anarel [89]
If a pesticide that inhibits acetylcholinesterase is present in a muscle, THE MUSCLE WILL BE CONTRACTING REPEATEDLY. 
The enzyme, acetylcholinesterase is the one responsible for the termination of muscle contraction, when this enzyme is deactivated, the muscle contraction will not be turned off and the concerned muscle will contracts repeatedly.
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Which of the following best describes a carbohydrate?
Alex_Xolod [135]

Answer:  C.)  Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

Explanation:

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What is the main sense organ for each of the five senses
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1. The body has different types of defences against pathogens.
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2and3 only are the defense
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In horses, Chesnut hair color is recessive to black. The pacing gait is recessive to trotting and long hair is recessive to shor
Vitek1552 [10]

9:3: 3:1  is the phenotypic ratio showing traits as black and long hair : black and short hair: chestnut and long hair: chestnut and short hair when a chestnut horse heterozygous for pacing and hair length with a hybrid horse.

Explanation:

Dominant trait = black hair colour (BB,Bb), trotting (TT,Tt) , long hair (LL,Ll)

recessive trait = chesnut hair colour (bb), pacing gait (tt), short hair(ll)

cross between chestnut horse heterozygous for pacing and hair length will have alleles as BbLl

alleles for hybrid horse will also be heterozygous Bb, Ll

Punnett square to show the cross:

      BL         Bl       bL         bl

BL  BBLL  BBLl     BbLL    BbLl

Bl   BBLl    BBll     BbLl      Bbll

bL  BbLL  BbLl      bbLL     bbLl

bl    BbLl  Bbll       bblL        bbll

phenotype ratio

black and long hair : black and short hair: chestnut and long hair: chestnut and short hair

9:3: 3:1  is the phenotype ratio.

3 0
3 years ago
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