6. Why honey diastase activity must be controlled?
Q: Which of the following is/are derived from isoprene? (Select all that apply!) __ A __ B __ C __…
A: One isoprene unit is represented by C5H8 and it is also called as the hemiterpene. Biosynthesis of…
Q: 2. Explain the statement from your textbook, "Destroying them (endospores) is the goal of…
A: Sterilization in microbiology is the total elimination of all germs, including spore and vegetative…
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A: Milk serves as a nutritious source of food for humans. Milk favors the growth of mesophilic microbes…
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A: Ans- (A) 1 Enzyme 1 is lacking in the mold
Q: . How will pH and aw will affect the growth of spoilage microorganisms on food?
A: Food spoilage is caused by microbes. The main cause of food spoilage is invasion by microorganisms…
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A: Zwitterion is a neutral or hybrid molecule containing both positive and negative charges within…
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A: Some primitive microorganisms are defined by their habitats, for example methanogens can release…
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A: A bacterial species called Clostridium tetani is frequently discovered in soil and livestock waste.…
Q: 1. Which of the following chemicals is a persistent organic pollutant (POP), but is produced…
A: Persistent organic pollutants (POP) are the toxic chemicals which persists for a longer period of…
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A: dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost…
Q: 1. (Only answer for Bile Esculin) How is the media selective? How is the media differential?
A: Bile Esculin agar is a media that consists of bile and esculin (a glycosidic coumarin derivative) as…
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A: We use glycerine as preservative in dextrose base syrup to increase viscosity. And viscosity plays a…
Q: 10. Pharmaceutical ingredients are susceptible to microbial attack. Which ONE of the following…
A: While the final products in pharmaceutical companies and probably most chemicals in the lab may…
Q: 1. List the similarities and differences in the microbial spoilage of (a) breads, (b) pastries, (c)…
A: Bread: The most common source of microbial spoilage of bread is mould growth. Mould grows on bread…
Q: Define Chemiosmosis
A: Chemiosmosis It is the process which occurs in the chloroplast during photosynthesis and in the…
Q: Which of the following is incorrect about food irradiation? 1) It alters the nutritional value of a…
A: Food Irradiation is a process in which food is exposed to ionizing radiation. The process improves…
Q: What does a mordant do in the Gram stain procedure? Which reagent in the Gram stain is the mordant?
A: Gram staining is a procedure which is used to classify the bacterial cells on the basis of their…
Q: what type of chemical eliminates microbes by mechanically transporting them away
A: Surfactants are compounds that cause wetting action between surface and dirt or microbes. These…
Q: What claims does Garcinia Cambogia extract make for the body
A: 1. Garcinia cambogia is cultivated in parts of Africa, Indonesia, india, Sri Lanka and Malaysia. 2.…
Q: Mention the known microorganisms and their negative effects on food products.
A: Spoilage microorganisms like bacteria , molds ,yeasts are those that can grow in a food and…
Q: 1.Describe the damaging effects of UV radiation on living cells. 2.Why does expense to UV radiation…
A: The term ultraviolet radiation (UV radiation) refers to a class of electromagnetic radiation with…
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- 3. What are the ingredients of a nutrient broth? Enumerate and give purpose of each. Ingredients Peptone Sodium chloride Meat extract B# Yeast extract Agar PurposePart 1. Mention why you have wells that do not contain one of the reagents and explain their use Part 2. Mention the wells that do not have a positive reaction. Why this happened?1. If an organism tests positive for catalase, which of the following is MOST likely true about the organism? It returns nitrogen back to the atmosphere It can only do homolactic fermentation It creates H2O as a product of respiration It can break down plasma membranes
- 5. Give two reasons for why heat fixing is used? Adherence of bacterial cells to the slide Denaturing of bacterial enzymes to preserve cellular integrity*9. B-carotene is a pigment that is largely responsible for the color of carrots. In addition to carrots and various green and yellow vegetables, it can also be found in other sources such as liver and egg yolk. Persons who do not have adequate B-carotene in their diet may suffer from rickets night blindness scurvy @sterility5. Using a pencil as your loop draw the streaking pattern used on a Petri plate to best achieve isolated colonies. How many times do you dip your loop into a broth culture? Number each streak in order.