Why could GMOs have a different impact on the environment from genetically engineered bacteria used to make pharmaceuticals?

Is determining the modality (competitive, uncompetitive, noncompetitive) of an inhibitory compound important? If so, why? Under what conditions ([S] vs. KM) is a competitive inhibitor the most effective? Under what conditions is an uncompetitive inhibitor the most effective?

Make a detailed comparison of DNA vs RNA, providing at least FOUR distinguishing characteristics.

Make a comprehensive comparison of aerobid respiration with fermentation, providing at least FIVE features that distinguish these process. Why are microbial fermentations important?

Describe at least FOUR physical or chemical factors used in the control of microbial growth, the way by which they kill microbes, and provide at least one example of the use of each.

Please answer all questions

Which of the following would be appropriate to use as an antiseptic?

A. Ethanol

B. Ultraviolet light

C. Bleach

D. Phenol

If a piece of heat-sensitive medical equipment must be sterile to be used, which of the following methods would be the best method to achieve this?

Autoclaving

Ionizing radiation

Ultraviolet light

Bleach

An antimicrobial substance that works by disrupting the plasma membrane would be ineffective in treating infections caused by:

Enveloped animal viruses

Prions

Yeast

Gram-positive bacteria

What is the primary mechanism by which ionizing radiation kills microorganisms?

Disruption of the plasma membrane

Damage to genetic material

Inhibition of cellular respiration

Denaturing proteins

A food scientist is trying to calculate how long bagged salad should be exposed to ionizing radiation to reduce the microbial population to 10 or fewer cells. Based on population estimates, the average bag of salad has 10,000,000,000 (ten billion) bacterial cells before treatment. The scientist knows that exposure to ionizing radiation kills 99.9% of the cells in 5 seconds. What is the minimum amount of time the scientist expose each bag of salad to radiation to be sure that there are 10 or fewer living cells in the package?

10 seconds

15 seconds

5 seconds

20 seconds

Based on the cellular structure of Mycobacterium tuberculosis, which of the following disinfectants would be best to use to prevent its growth?

Group of answer choices

Benzalkonium chloride

Phenol

Iodine

Silver nitrate

Which of the following methods of controlling microbial growth is bacteriostatic?

Oligodynamic action

Alcohol

Boiling

Refrigeration

Select all that apply!

Which of the methods of microbial control listed below are biocidal?

Phenol

Ethanol

Hydrogen peroxide

Filtration

Ultraviolet light

Desiccation

Several media types contain heat-sensitive ingredients, including the urease broth used to determine if an organism can digest urea. To use urease media, it must be sterile before inoculation. What is the best way to create sterile urease broth?

Filter the media

Include antibiotics in the media

Autoclave the media

Add formaldehyde to the broth

Fully explain how the crop maiz was genetically engineerred to have Bt insect resistance

Label them 25,26,27,28,29

25) Use this volume of 0.1 M NaCl stock solution to make 20 mls of 1 mM final concentration

26) Use this volume of 10 mM NaCl stock solution to make 1 L of 5 mM final concentration

27) Use this volume of 5 M NaCl stock solution to make 100 mls of 0.35 M final concentration

28) Use this volume of 5 M NaCl stock solution to make 100 mls of 1% final concentration

29) Use this volume of 5 mM NaCl stock solution to make 10 mls of 1 mM final concentration

Discuss the relationship between Homo sapiens, Homo neanderthalensis, Homo heidelbergensis, Homo floresiensis and Denisovan hominid.

Give examples of chemical methods of disinfection and the advantages and disadvantages of each example, include alcohols, Halogens, phenol and phenolics, biguanides, bisphenols and heavy metals.

A) In duplicate recessive epistasis why does having either an (aa) or (bb) genotype cause no pigment?

B) Explain the differences between Duplicate Dominant epistatis and Dominant epistatis. When doing monohybrid crosses, how do their phenotypic ratios differ in the F2 from traditional Mendelian ratios for dominant alleles?

A sequence of a following DNA template strand 5' - GTAACGGGCACGTCC - 3' was transcribed to an mRNA that was then translated to a protein. What would be the first amino acid in the polypeptide? Assume that no start codon is needed

You are a researcher who is interested in three genes in drosophila: The a gene, the b gene and the c gene. You think the genes may be linked, so you decide to do a cross using a true-breeding a+/b+/c+ fly and an a/b/c fly. The F1 generation is all a+/b+/c+. However, when the F1 generation is bred to a true-breeding a/b/c fly, it yields the following offspring phenotypes: 589 a+/b+/c+ ; 603 a/b/c ; 183 a+/b/c ; 176 a/b+/c+ ; 92 a/b+/c ; 95 a+/b/c+ ; 4 a+/b+/c ; 6 a/b/c+. Is this the expected ratio for unlinked genes (hint: the critical chi-squared value is 7.815)?

what are the genes and genetic controls governing the Entner Doudoroff pathway? Explain in great detail

Identify some possible effects of the following factors on microbial growth: pH, osmotic pressure, chemical requirements such as carbon, nitrogen, sulfur, phosphorus, oxygen

Hi

Could anyone please explain to me the principle behind the RNA isolation experiment.