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3 years ago

In general, the ld50 for exotoxins is much greater than the ld50 for endotoxins.

1 answer:

4 0

FALSE!!
Endotoxins are just the lipid parts of a gram negative cell wall that have broken off when the bacteria dies. They are moderately toxic, cause fever and can make you pretty sick.
Exotoxins are proteins made by pathogenic bacteria (mostly gram positive). These highly toxic. Examples of diseases caused by these are diphtheria, botulism and tetanus.
Therefore it doesn't take much exotoxin to cause a problem!

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The kind of bond that lipids won’t form with water is a _ _ _ _ _ _ _ _ bond.

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Answer:

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Explanation:

This is ur answer.....

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2 years ago

Read 2 more answers

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Vinvika [58]

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7 0

2 years ago

In a plant, leaf color and leaf shape are controlled by two linked genes Leaves of the wild-type plant are red. A recessive muta

Brrunno [24]

Solution :

Red is dominant over the white leaves and pointed is dominant over smooth.

Red = R , white = r

Pointed = P , smooth = p

Red, pointed x white,smooth ------ Parents

RRPP rrpp

RP rp ----------------- Gametes

RrPp -------- $F_1$

(red, pointed)

When this $F_1$ is test crossed,

RrPp x rrpp ---- $F_1$ test cross

Gametes → rp

RP ---------- RrPp - red, pointed - 36 parental type

Rp ---------- Rprp - red, smooth - 14 re- combination

rP ----------- rrPp - white pointed - 10 re- combination

rp ----------- rrpp - white, smooth - 40 - parental type

Total = 100

As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.

Linkage strength = percentage of crossing over = map distance between the genes.

Percentage crossing = recombination frequency = percentage of recombination.

Recombination frequency $=\frac{\text{total no. of recombination}}{\text{total no. of progeny}}\times 100$

$=\frac{14+10}{100} \times 100$

= 24 %

= 24 map units

4 0

2 years ago