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boyakko [2]
3 years ago
10

A microbiologist inoculates a flask of broth with 1 ml of 100 bacterial cells/ml. The generation time of the species is 1 hour,

and there is no lag phase. How long will it be before the culture contains more than 6,000 cells/ml?
Biology
1 answer:
klio [65]3 years ago
5 0

Answer:

Six hours

Explanation:

Given that;

A microbiologist inoculates a flask of broth with 1 ml of 100 bacterial cells/ml

Also, the generation time of the species is 1 hour and there is no lag phase

i.e there is no  period where the individual bacteria are maturing, this will enhance a faster replication

So , since the generation time is 1 hour and we are being given 100 bacterial cells/ml

∴

After 1 hour = replication of the bacterial cells would have been doubled to =200 bacterial cells

2nd hour = 400 bacterial cells

3rd hour = 800 bacterial cells

4th hour = 1600 bacterial cells

5th hour = 3200 bacterial cells

6th hour = 6400 bacterial cells

∴ We can see that at the 6th hour, the culture has contained more than 6,000 cells/ml

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The correct answer choice among the statement above about strings of amino acids which can be decoded using single letter amino acid abbreviations to a type of

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<h3>Amino acid</h3>

Amino acid can simply be defined as those organic molecules or substances which combine to form proteins. However, amino acids are generally characterized by some key features or properties; some of these properties of amino acids includes the following:

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So therefore, the correct answer choice among the statement above about strings of amino acids which can be decoded using single letter amino acid abbreviations to a type of

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Alanine luecine proline histidine alanine histidine glutamic acid leucine isoleucine cysteine glutamic acid serine. Option a is the correct answer

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8 0
1 year ago
8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
devlian [24]

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

<u>Bb X Bb cross </u>

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

<u>Genotypes</u>:  

  • Bb, 50%
  • BB, 25%
  • bb, 25%

<u>Phenotypes</u>:

  • Brown feathers, 75%
  • Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

3 0
3 years ago
What causes uncontrolled cell growth and what is it called?
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Cancer and Tumors...
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3 0
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The allele combination at a gene locus is known as an organism’s –. The DNA – is then transcribed to produce –, using the DNA as
hjlf

Answer:

<h2>Genotype, sequence, mRNA, cytoplasm, proteins, phenotype</h2>

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The allele combination at a gene locus is known as an organism's genotype, which after expression define the phenotype of that organism.

Th sequence of nucleotide in the DNA then transcribed to produce mRNA by RNA polymerase. Then mRNA exported into the cytoplasm and works as template for the  synthesis of protein. This protein defines the phenotype of that organism.

4 0
2 years ago
For an occupational therapy assistant, do certain areas of the country have a better outlook? And where?
olga_2 [115]
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Reasoning - It is in fact true because in a city you can find a populated are that probably fractured their hand and needs some assistant for help recovery if the main doctor is not there.
3 0
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