Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: conditions needed for the growth of micro-organisms
A: Growth Requirements/conditions for Microorganisms are chemical and physical requirements. Chemical requirements. [ 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. Perhaps 50 percent of a bacterium's dry weight is carbon. Carbon can be obtained from organic materials in the environment, or it may be derived from carbon dioxide. Both chemoautotrophic and photoautotrophic microorganisms obtain their energy and produce their nutrients from simple inorganic compounds such as carbon dioxide. Chemoautotrophs do so through chemical reactions, while photoautotrophs use photosynthesis.Physical requirements. Certain physical conditions affect the type and amount of microbial growth. For example, enzyme activity depends on the temperature of the environment, and microorganisms are classified in three groups according to their temperature preferences: psychrophilic organisms (psychrophiles) prefer cold temperatures of about 0?C to 20?C; mesophilic organisms (mesophiles) prefer temperatures at 20?C to 40?C; thermophilic organisms (thermophiles) prefer temperatures higher than 40?C (Figure 1 ). A minimum and a maximum growth temperature range exist for each species. The temperature at which best growth occurs is the optimum growth temperature. ]
Get an answer
Original conversation
User: identify poor practices that may lead to the spread of infection

User: conditions needed for the growth of micro-organisms

Weegy: Growth Requirements/conditions for Microorganisms are chemical and physical requirements. Chemical requirements. [ 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. Perhaps 50 percent of a bacterium's dry weight is carbon. Carbon can be obtained from organic materials in the environment, or it may be derived from carbon dioxide. Both chemoautotrophic and photoautotrophic microorganisms obtain their energy and produce their nutrients from simple inorganic compounds such as carbon dioxide. Chemoautotrophs do so through chemical reactions, while photoautotrophs use photosynthesis.Physical requirements. Certain physical conditions affect the type and amount of microbial growth. For example, enzyme activity depends on the temperature of the environment, and microorganisms are classified in three groups according to their temperature preferences: psychrophilic organisms (psychrophiles) prefer cold temperatures of about 0?C to 20?C; mesophilic organisms (mesophiles) prefer temperatures at 20?C to 40?C; thermophilic organisms (thermophiles) prefer temperatures higher than 40?C (Figure 1 ). A minimum and a maximum growth temperature range exist for each species. The temperature at which best growth occurs is the optimum growth temperature. ]
ephraimzRN|Points 2002|

User: explain the ways an infective agent might enter the body

Weegy: They can enter the body in various ways. Mouth, nose, skin, ear, eyes, etc. Any entry way for bacteria is an entry way for disease- causing agents. [ Hand contact with someone who has those agents can cause one to Once contact occurs, disease-causing agents, such as viruses and bacteria, may enter a person through breaks in the skin, or they may be inhaled or swallowed. Others may enter the body through the moist linings of the eyes, ears, nose, mouth, or other body openings. source: WikiAnswers ]
sharpies|Points 7288|

User: common sources of infection

Question
Asked 4/5/2012 5:05:32 AM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
27,038,344 questions answered
Popular Conversations
To derive energy from food, you must eat foods that contain ...
Weegy: To derive energy from food, you must eat foods that contain carbohydrates, proteins, and fats. User: Which of ...
6/16/2017 2:08:12 PM| 1 Answers
The evolution of agricultural practices ultimately led to the ...
Weegy: The evolution of agricultural practices ultimately led to the development of towns and cities.
6/23/2017 10:56:18 AM| 1 Answers
Earth’s lithosphere is composed of a. the crust only. b. the mantle ...
Weegy: The LITHOSPHERE is the part of the Earth composed of the crust and upper mantle.
6/25/2017 1:50:09 AM| 0 Answers
Radioactive isotopes are used to a. determine the absolute age of ...
Weegy: Radioactive isotopes are used to determine the absolute age of rocks.
6/25/2017 1:43:13 AM| 0 Answers
Magma that hardens vertically underneath the surface will form a ...
Weegy: Magma that hardens vertically underneath the surface will form a sill. FALSE.
6/25/2017 1:22:58 AM| 0 Answers
The ADA states that a service animal can be any animal that the ...
Weegy: The ADA states that a service animal can be any animal that the passenger deems a service animal and must be ...
6/25/2017 12:55:37 AM| 0 Answers
Waves that cause the most damage during an earthquake are waves.
Weegy: Waves that cause the most damage during an earthquake are surface waves.
6/25/2017 12:53:18 AM| 0 Answers
Which of the following would be considered a negative side effect of ...
Weegy: Threats of dangerous flooding would be considered a negative side effect of settling near a river bed.
6/23/2017 11:35:22 AM| 0 Answers
Most scientists and anthropologists agree that early humans first ...
Weegy: Most scientists and anthropologists agree that early humans first emerged in AFRICA.
6/23/2017 10:53:42 AM| 0 Answers
A paragraph that has its topic sentence first is _____. a rectangle ...
Weegy: A paragraph that has its topic sentence first is an inverted triangle.
6/23/2017 10:25:31 AM| 0 Answers
Desert plants are often widely spaced due to competition for ...
Weegy: Desert plants are often widely spaced due to competition for rainwater. TRUE.
6/23/2017 10:16:15 AM| 0 Answers
Weegy Stuff
S
L
Points 30 [Total 1371] Ratings 0 Comments 0 Invitations 3 Offline
S
Points 17 [Total 17] Ratings 0 Comments 7 Invitations 1 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
R
Points 3 [Total 19] Ratings 0 Comments 3 Invitations 0 Offline
S
Points 3 [Total 3] Ratings 0 Comments 3 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 72] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.