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Vinvika [58]
2 years ago
6

The sun's energy comes from the burning (combustion) of hydrogen like a huge fire.

Biology
1 answer:
aivan3 [116]2 years ago
3 0

Answer:

false.

Explanation:

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Mutations rII1 and rII2 are known to fall into the rIIA and rIIB cistrons (genes) respectively. Cells of E. coli B are infected
viktelen [127]

Answer:

the answer is A. E. coli B

Explanation:

The multiplicity of infection (MOI) refers to the ratio between the numbers of viruses used to infect <em>E. coli</em> cells and the numbers of these <em>E. coli </em>cells. Benzer carried out several experiments in order to define the gene in regard to function. Benzer observed that <em>E. coli </em>strains with point mutations could be classified into two (2) complementary classes regarding coinfection using the restrictive strain as the host. With regard to his experiments, Benzer observed that rII1 and rII2 mutants (rapid lysis mutants) are complementary when they produce progeny after coinfect E. coli K (where neither mutant can lyse the host by itself). The rII group of mutants studied by Benzer does not produce plaques on <em>E. coli</em> K strains that carry phage λ (lysogenic for λ), but they produce plaques on <em>E. coli</em> B strains. This study showed that rIIA and rIIB are different genes and/or cistrons in the rII region.

3 0
3 years ago
Describe the intracellular events that occur when a population of wild type ( lac+) escherichia coliis transferred from a medium
denis23 [38]

The lac repressor protein is bound to the operator region of the lac operon when there is no lactose in the medium. When introduced in lactose, it binds to an allosteric site on the repressor causing its to change conformation and release from the operator. This allows the polymerase that is bound to the promoter region to proceed transcription of the lac operon genes (LacZ, Lac A, and Lac Y). Translation of these genes forms enzymes that enable the organism to break down lactose for energy.   






5 0
3 years ago
Why do we want our body cells to be identical each time they replicate?
hichkok12 [17]

Answer:

So more people can be like us

Explanation:

6 0
3 years ago
Why a genetic bottleneck can be an important evolutionary factor for a species
melisa1 [442]

Answer:

Genetic drift decreases genetic diversity within a population.

Explanation:

Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.

6 0
2 years ago
If scientists from all over can repeat an experiment with the same results, it validates the hypothesis.
geniusboy [140]
True Because all the scientists agree
6 0
3 years ago
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