While rhizobia usually associate with plant roots, nodules can also be formed along the stems of leguminous plants
Indicate whether the statement is true or false.
Answer: TRUE
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A microbiologist studying the human microbiome is interested in how a particular bacterial species may impact water absorption in the large intestine. Which of the following models is appropriate for this investigation?
A. A normal mouse colonized with enteric microbiota found in the human colon. B. A germfree mouse inoculated with human microbiota shortly after birth. C. A human volunteer who is a carrier of that particular bacterial species. D. A germfree mouse raised in a sterile environment.
The only gene successfully targeted for breast cancer prevention is the
a. estrogen promoter gene. b. estrogen receptor gene. c. uterine promoter gene. d. uterine receptor gene. e. breast promoter gene.
An organism has a mutation in the gene that codes for separase so that no functional separase can be made by this individual. What consequence would occur from this mutation?
a) Sister chromatids would separate prematurely during mitosis. b) During meiosis, sister chromatids would never separate because cohesin could not be broken down but homologous chromosomes would separate. c) Both sister chromatids and homologous chromosomes would never separate because cohesin could not be broken down. d) During meiosis, homologous chromosomes would never separate during meiosis but sister chromatids would separate.
You are generally not aware of the texture of the cloth of your shirt as it rests on your shoulders, unless someone or something happens to make you think of it. What part of the brain is responsible for filtering out such stimuli?
A) reticular activating center B) cerebellum C) primary motor area D) postcentral gyrus