Sex pilus(i) is/are
A. similar to fimbria(e)
B. proteins that form the outermost cell envelope of broad spectrum of bacteria
C. specialized appendage(s) that binds mating prokaryotes together for DNA transfer
D. specialized appendage(s) that are found only on gram-positive bacteria
Answer: C. specialized appendage(s) that binds mating prokaryotes together for DNA transfer
You might also like to view...
The sunflower species Helianthus anomalus is thought to have been formed by hybridization between the sunflower species H. petiolaris and H. annuus because it contains a set of chromsomes from both parental species. H. anomalus is most likely an example of instantaneous speciation through
A. allopolyploidy. B. autopolyploidy. C. parthenogenesis. D. hybrid sterility. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about speciation through polyploidy? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In a muscle contraction event, ____ causes the release of calcium from the sarcoplasmic reticulum
a. the hydrolysis of ATP b. the formation of ATP c. the formation of the actin-myosin cross-bridge d. a signal from a motor neuron e. the shortening of the sarcomere
Gardasil is a subunit vaccine designed to protect women from ________
A) hepatitis B) AIDS C) human papillomavirus D) influenza E) measles
You are a forensic technician working on a DNA sample obtained from a crime scene. Your job is to compare the unknown DNA sample with known DNA samples collected from five different suspects. Preliminary analysis using only a few DNA markers revealed that the unknown sample could possibly match two of the suspects. After consulting the case file, you find out that these two suspects are brothers (but not twins). You realize that you will have to do a more detailed analysis on the samples so that you can distinguish between the brothers and determine which brothers' DNA matches the unknown sample.Why can't you use mitochondrial DNA to distinguish between these two suspects?
A. There are no molecular techniques available that allow one to analyze mitochondrial DNA. B. The sequence of mitochondrial DNA has not yet been determined. C. The brothers share the same mitochondrial DNA. D. Because mitochondrial DNA is inherited in a paternal pattern.