Heat treatment is an effective method for sterilization or disinfection of all materials
Indicate whether this statement is true or false.
FALSE
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Which of the following statements is not true of nitrogen-fixing bacteria?
A. They live in root nodules. B. They are very common in symbioses with plants from the legume family. C. They are very common in symbioses in all plant families. D. Some are free-living in the soil. E. They provide an important way that biologically available nitrogen enters ecosystems.
A neuron sums all inhibitory and excitatory signals through ________
a. interneurons b. breakdown or reuptake of neurotransmitters c. threshold potential d. synaptic integration
An example of a haploid cell is a
A. All of the answer choices are correct. B. skin cell. C. zygote. D. stem cell. E. sperm cell.
Next-generation sequencing takes advantage of the concept of sequencing-by-synthesis. What is sequence-by-synthesis?
A) The use of firefly luciferase and pyrophosphate to report on nucleotide incorporation. B) The use of a multiwell system and microfluidics to detect incorporated nucleotides at each base. C) The use of a single polymerase in a nanopore that reports on a single molecule of synthesized DNA. D) The use of PCR to incorporate ddNTPs, followed by electrophoresis.