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3 years ago

I need help ASAP i only have 15 minutes left to get it done please and thank you!!!

1 answer:

4 0

Landfills are harfull to the environment because many substances cannot decompose like styrofoam and all this matter keeps building up but never decomposes

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What does the term

Verizon [17]

Answer:

Explanation:

Membranes will allow and inhibit certain ions/molecules. I don't believe it can distinguish whether the molecules are harmful or beneficial!

5 0

3 years ago

What are the precautions must be taken while measuring an object with the help of a scale?

Trava [24]

Make sure to zero out the scale especially if you’re using something to hold the object. For example, make sure to zero out the scale with the cup before pouring water on it.

7 0

3 years ago

Read 2 more answers

The bacteria grown in Luria broth with only lactose were expected to: Select one: a. Grow much faster than those grown in Luria

solniwko [45]

Answer:

Option D is correct

Explanation:

Luria broth contains yeast concentrate so it would show a marked B- galactosidase activity which is an enzyme that catalyzes the hydrolysis of B- galactosides including lactose and it is the first step of lactose fermentation.

5 0

3 years ago

Read 2 more answers

Convert the following sequence DNA to DNA<br><br>A A G C A

igomit [66]

Answer:

TTCGT

Explanation:

since in DNA Adenine(A) pairs with Thymine(T) and guanine(G) pairs with cytosine(C) the complementary strand should be

T T C G T

7 0

3 years ago

In maize (corn) plants, a dominant allele I inhibits kernel color, while the recessive allele i permits color when homozygous. A

EleoNora [17]

Answer:

Phenotype ratio= 12 colorless : 3 purple : 1 red

Genotype ratio= 1:2:1:2:4:2:1:2:1

Explanation:

According to the given information, the dominant allele "I" is epistatic to P and p alleles and presence of "I" inhibits the expression of both "P" and "p" alleles.

A cross between two heterozygous plants for both locus would give the F2 progeny in 12 colorless: 3 purple: 1 red ratio.

Here, the F2 genotype with "I-G" and "I-gg" would produce colorless kernels while the ones with "ii-G-" would exhibit purple colored kernels. The F2 genotype "iigg" would beak red kernels.

Hence, the phenotype ratio= 12 colorless : 3 purple : 1 red

Genotype ratio would be same as for the mendelian dihybrid cross= 1 IIPP: 2 IIPp :1 IIpp: 2 IiPP :4 IiPp: 2 Iipp: 1 iiPP :2 iiPp: 1 iipp

6 0

3 years ago