Animalscaretips
- Which organism below has a problem in maintaining cellular electrolyte and fluid balance in its environment quizlet?
- Which of the following would not be able to find a location in or on body tissues suitable for growth?
- Which of the following microorganisms have an optimal growth temperature at 37 degrees C?
- Which of the following is not a major element of a microbial cell group of answer choices?
- When microbes in a close nutritional relationship and one benefit but the other is not harmed what is it called?
- What is the term for an oxygen free environment and the organisms that can live there?
- What term describes an organism that lacks superoxide dismutase and catalase enzymes quizlet?
- Which microbial agent is the most resistant to physical and chemical control methods?
- Which of the following terms refers to microorganisms that live in or on the body and cause harm?
- What are Psychrophilic microorganisms?
- Why does E coli grow best at 37 degrees?
- Why are some microorganisms more resistant to heat?
- What are the main conditions required for the growth of microorganisms?
- Are microorganisms?
Which organism below has a problem in maintaining cellular electrolyte and fluid balance in its environment quizlet?
Which organism below has a problem in maintaining cellular electrolyte and fluid balance in its environment? iron. The termite requires the protozoan Trichonympha in its gut to provide the enzyme cellulase for the termite's use of cellulose in wood products.
Which of the following would not be able to find a location in or on body tissues suitable for growth?
All of the following could find a location in or on body tissues suitable for growth except: psychrophiles. A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with: oxygen.
Which of the following microorganisms have an optimal growth temperature at 37 degrees C?
mesophiles: include most bacteria, optimum growth temperature is 20 - 45°C. Many pathogens are mesophiles as their preferred temperature is body temperature (37ºC).
Which of the following is not a major element of a microbial cell group of answer choices?
Which of the following is not a major element of a microbial cell? magnesium.
When microbes in a close nutritional relationship and one benefit but the other is not harmed what is it called?
mutualism. an association between two organisms in which one benefits and the other derives neither benefit nor harm.
What is the term for an oxygen free environment and the organisms that can live there?
aerobe, an organism able to live and reproduce only in the presence of free oxygen (e.g., certain bacteria and certain yeasts). Organisms that grow in the absence of free oxygen are termed anaerobes; those that grow only in the absence of oxygen are obligate, or strict, anaerobes.
What term describes an organism that lacks superoxide dismutase and catalase enzymes quizlet?
An organism that lacks superoxide dismutase and catalase enzymes would be killed in the presence of oxygen because of its inability to detoxify the superoxide radical and hydrogen peroxide. Such an organism would be an obligate anaerobe.
Which microbial agent is the most resistant to physical and chemical control methods?
Endospores are considered the most resistant structure of microbes. They are resistant to most agents that would normally kill the vegetative cells they formed from. Mycobacterial infections are notoriously difficult to treat. Protozoa cysts are quite hard to eliminate too.
Which of the following terms refers to microorganisms that live in or on the body and cause harm?
An infection occurs when a microorganism enters a person's body and causes harm. The microorganism uses that person's body to sustain itself, reproduce, and colonize. These infectious microscopic organisms are known as pathogens, and they can multiply quickly.
What are Psychrophilic microorganisms?
Psychrophilic microorganisms are those whose optimum growth temperature is low, approximately 15°C or lower, and have a maximum growth temperature of approximately 20°C. These microorganisms grow at refrigeration temperatures and are found in environments where the temperature is always below 15 to 20°C.
Why does E coli grow best at 37 degrees?
E. coli is a mesophile that grows best at 37 degrees Celsius in neutral pH environments. E. coli is a facultative aerobe and is able to grow without oxygen, but it can extract more energy from its nutrient source and grow faster if oxygen is present.
Why are some microorganisms more resistant to heat?
Thermal resistance of microorganisms is affected by many different factors. Some of the most influencing factors are the water activity, nutrient content, pH of the heating medium, growth phase and growth temperature of the microbial culture, as well as the genus, species and even the strain within the same species.
What are the main conditions required for the growth of microorganisms?
In order to grow successfully, microorganisms must have a supply of water as well as numerous other substances including mineral elements, growth factors, and gas, such as oxygen. Virtually all chemical substances in microorganisms contain carbon in some form, whether they be proteins, fats, carbohydrates, or lipids.
Are microorganisms?
Technically a microorganism or microbe is an organism that is microscopic. ... Microorganisms can be bacteria, fungi, archaea or protists. The term microorganisms does not include viruses and prions, which are generally classified as non-living.
