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
You've already posted these questions three times in an hour. Please be patient. Someone may help you -- but please note that Jiskha doesn't have a biology teacher at this time. Do not post these questions again this evening.
You might try this site.
http://biology-forums.com/index.php
1.a
2.e
3.c
4.dont know
5.a
Sure! Let's break down each question and go through the possible answers to help you find the correct ones.
1. Profiles of which component of the membrane may be used to identify certain kinds of pathogens?
Possible answers: a) proteins, b) polysaccharides, c) leaflets, d) phospholipids, e) fatty acids
To identify certain kinds of pathogens, we typically look for specific markers or profiles on the membrane. Proteins on the membrane are often used for identification purposes, as they can be unique to certain pathogens. So, the correct answer is a) proteins.
2. Barely ____________% of all microbial species can be cultured in the laboratory.
Possible answers: a) 10, b) 25, c) 1, d) 50, e) 0.1
Culturing microbes in the laboratory can be challenging, and not all microbial species can be successfully cultured. The correct answer is e) 0.1, as it indicates that only a very small percentage of microbial species can be cultivated in the lab.
3. Which of the following is a dormant form of bacteria resistant to desiccation and other natural stresses?
Possible answers: a) ribosome, b) magnetosome, c) endospore, d) mitochondria, e) chloroplast
Among the options provided, the dormant form of bacteria that is resistant to desiccation and other natural stresses is an endospore. So, the correct answer is c) endospore.
4. Which of the following is true of all biofilms?
Possible answers: 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.
Biofilms are structured communities of microorganisms that adhere to surfaces and are enclosed in a self-produced matrix called extracellular polymeric substance (EPS). The EPS can be made of protein or polysaccharide. So, the correct answer is a) The EPS may be protein or polysaccharide.
5. The eukaryotic predators of the microscopic world are
Possible answers: a) viruses, b) algae, c) bacteria, d) protists, e) cyanobacteria
Among the options provided, eukaryotic predators of the microscopic world are protists. So, the correct answer is d) protists.
Based on the explanations above, the correct answers to each question are:
1. a) proteins
2. e) 0.1
3. c) endospore
4. a) The EPS may be protein or polysaccharide
5. d) protists
I hope this helps! Let me know if you have any more questions.