Profiles of which component of the membrane may be used to identify certain kinds of pathogens?
a)proteins
b)polysaccharides
c)leaflets
d)phospholipids
e)fatty acids
Barely ____________% of all microbial species can be cultured in the laboratory.
a10
b)25
c)1
d)50
e)0.1
Which of the following is a dormant form of bacteria resistant to desiccation and other natural stresses?
a)ribosome
b)magnetosome
c)endospore
d)mitochondria
e)chloroplast
Which of the following is true of all biofilms?
a)The EPS may be protein or polysaccharide.
b)They only contain a single species.
c)The EPS is secreted by the bacteria.
d)Cells in the biofilm are dormant until the bacteria leave the biofilm.
e)It is a continuous monolayer surface deposit.
The eukaryotic predators of the microscopic world are
a)viruses.
b)algae.
c)bacteria.
d)protists.
e)cyanobacteria.
I can't figure out my extra credit problems. I think for #1 is a, #2 is either c or e, #4 is a, and #5 is a. I am not sure those are right or what #3 is. Can I get some help please. Thank You
Sure, I can help you with that! Let's go through each question and discuss the correct answers and how to determine them.
1) Profiles of which component of the membrane may be used to identify certain kinds of pathogens?
To answer this question, we need to consider the components of the membrane that can be used for identifying pathogens. One way to determine this is by having some knowledge of microbial biology. In this case, we can identify certain kinds of pathogens using their membrane proteins. Therefore, the correct answer is (a) proteins.
2) Barely ____________% of all microbial species can be cultured in the laboratory.
To find the correct answer for this question, we need to understand the difficulty in culturing microbial species in the laboratory. This is a factual question, and one way to find the correct response is by looking up information on the topic. Research indicates that only a small percentage of microbial species, approximately 1%, can be cultured in the laboratory. Therefore, the correct answer is (c) 1.
3) Which of the following is a dormant form of bacteria resistant to desiccation and other natural stresses?
To find the answer to this question, we need to identify the characteristics of the dormant form of bacteria that is resistant to desiccation and other natural stresses. One way to find the answer is by understanding bacterial biology. Among the options provided, the dormant form that fits the description is an endospore. Endospores are tough, resistant structures formed by bacteria to survive unfavorable conditions. Therefore, the correct answer is (c) endospore.
4) Which of the following is true of all biofilms?
To identify which statement is true for all biofilms, we need to understand the general characteristics of biofilms. One way to determine this is by having some knowledge of microbiology. Among the options provided, the statement that is true for all biofilms is that the EPS (extracellular polymeric substance) may be protein or polysaccharide. EPS is a matrix-like substance that holds the biofilm together, and it can be composed of proteins, polysaccharides, or a combination of both. Therefore, the correct answer is (a) The EPS may be protein or polysaccharide.
5) The eukaryotic predators of the microscopic world are
To identify the correct answer for this question, we need to recognize the organisms that act as predators in the microscopic world. One way to find the answer is by understanding the diversity of microscopic organisms. Among the options provided, the eukaryotic predators are protists. Protists are a group of eukaryotic microorganisms that include different types of organisms such as amoebas, ciliates, and flagellates, which can act as predators in the microscopic world. Therefore, the correct answer is (d) protists.
Based on your answers, you got question 1 correct, question 2 correct, question 3 correct, question 4 incorrect, and question 5 correct. The correct answer for question 4 is (a) The EPS may be protein or polysaccharide.
I hope this explanation helps! Let me know if you have any other questions.