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Lady_Fox [76]
3 years ago
12

Which of these genes is not a part of the lac operon?

Biology
1 answer:
romanna [79]3 years ago
8 0
The lac operon is an operon required for the transport and metabolism of lactose in Escherichia coli and many other entric bacteria. It includes the promoter, regulatory and the operator.
Answer: C. repressor gene


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a. phosphate group, sugar, nitrogen base.

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c.Nitrogen base

d. Adenine, Gaunine, cytosine, Thymine.

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Which of the following is NOT true of the cell theory?
Dafna11 [192]
The answer is D.) all cell are composed of a membrane...
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What property of a hormone would allow it to pass unassisted through a plasma membrane?
siniylev [52]

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Hormones are regulatory substances synthesized by various plants and animals and play role in proper growth, development, and maintain homeostasis. Hormones are released by signalling cells and show their actions after binding to specific receptors present on the surface or inside of the target cell.

Hormones, for which receptors are present inside the cells (in cytosol or nucleus) should be hydrophobic in nature. This is because plasma membrane is made up lipid molecules and small, hydrophobic, uncharged molecules can easily pass through this. For example, cortisol, estrogen, and progesterone hormones are lipid-derivatives and receptors for these hormones are present inside the cells.  


8 0
3 years ago
Describe two ways that people contribute to the spread of antibiotic resistance.
frosja888 [35]
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Escherichia coli, abbreviated as e. Coli, are bacteria found in the environment, foods, and intestines of people and animals. Wh
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E. coli belongs to the genus Escherichia

Taxonomically, <em>Escherichia coli </em>is categorized as belonging to the phylum Proteobacteria, class Gammaproteobacteria, family Enterobacteriaceae, order Enterobacteriales, and genus Escherichia (named after its discoverer, Theodor Escherich).

  • Escherichia coli (E. coli) are typically found in warm-blooded organisms' lower intestines. The majority of E. coli strains are not harmful, but some can seriously poison food.

  • A  Shiga toxin-producing E. coli (STEC) is capable of causing severe foodborne illness.
  • Raw or undercooked ground meat products, raw milk, and fecal contamination of vegetables are the most common causes of STEC outbreaks.
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know more about E. Coli here:brainly.com/question/8782363

#SPJ4

8 0
1 year ago
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