The general name "bacteria" can essentially be applied to all of the organisms in kingdom ____________ .
Monera
100
What is a parasite?
An organism that feeds on a living host.
100
Do bacteria reproduce sexually or asexually?
asexually
100
How do bacteria increase the genetic diversity of the population?
genetic recombination which can occur in one of three ways:
conjugation
transformation
transduction
100
What is one of the most common ways of becoming infected with a pathogenic bacteria?
Eating: contaminated food, containers, or hands.
200
An organism that causes disease is called a _____________
Pathogen
200
What is the difference between an aerobic organism and an anaerobic organism?
Aerobic organisms require oxygen while anaerobic organisms do not.
200
What is binary fission
The most common bacterial asexual reproduction. DNA loop attaches to plasma membrane, duplicates, plasma membrane elongates to separate duplicates, plasma membrane grows and closes the two DNA strands off from one another.
200
What is an endospore?
The DNA and other essential parts of a bacterium are coated with several hard layers
200
Give at least two ways to prevent bacterial infection in food.
1. Extreme heat or radiation
2. Dehydration
3. Freezing
300
If a bacterium cannot move, what structure is it missing?
It is missing a flagellum.
300
What bacteria do some people commonly eat?
There are a few in yogurt: Lactobacillus, Bifidobacterium, Streptococcus Thermophilus
There are, of course other possibilities to answer this question. :-)
300
What is steady state?
A state in which members of a population died as quickly as new members are born.
300
Is bacteria's ability usually or usually not enhanced by being part of a colony?
Usually this enhances its ability to survive.
300
What is the difference between bacteriostatic and bactericidal antibiotics?
Bacteriostatic antibiotics slow the reproduction and growth of bacteria. Bactericidal antibiotics interfere with the cell wall and causes the bacteria to die.
400
In kingdom Monera, also known as kingdom Prokaryota, there are producers, consumers and decomposers. Most bacteria are one of these. Which one?
Decomposers - known as saprophytes = organisms that feed on dead matter.
400
In what ways do bacteria help you live healthfully?
Decomposing bacteria help recycle matter back into creation.
Protect your body by destroying harmful organisms - skin, mouth, intestines, etc.
400
What do we call it when population growth is unhindered because of the abundance of resources for an ever-increasing population?
Exponential Growth
400
When speaking about bacteria, what are strains?
Organisms from the same species that have markedly different traits.
400
Why should antibiotics be used only rarely, when seriously needed?
Over use contributes to bacterial microevolution of resistant strains of bacteria which will be unharmed by the same antibiotic in the future.
500
Can saprophytic bacteria be autotrophic?
No, saprophytic means it feeds on dead matter, autotrophic means it makes its own food.
500
Can aerobic bacterium be chemosynthetic?
Yes, aerobic and anaerobic deal with how the organism converts its food into useful energy. Chemosynthetic deals with how the organism gets the food to begin with. Thus, the bacterium can make the food chemosynthetically and then convert it to useable energy aerobically.
500
Which type of reproduction would usually make a population more resistant to changes in habitat?
Sexual reproduction makes a population more resistant to changes in habitat. There is no variation in the DNA of asexually reproduced organisms, so all the offspring will have the same traits and the same susceptibility to changes in the environment. A whole population could be wiped out more readily.
500
There are some conditions that must be present in order for populations of bacteria to grow. What are these conditions?
1. Moisture
2. Moderate temperature
3. Nutrition
4. Darkness
5. The proper amount of oxygen