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ENVS 2126 Exam 1 Questions with Correct Answers.
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ENVS 2126 Exam 1 Questions with Correct AnswersSome microorganisms can undergo ________ in which various cell types can become specialized and arise from one parent cell type Correct
Answer-Differentiation
The lipopolysaccharide (LPS) layer is found ONLY in the cell walls of Correct Answer-Gram-negative bacteria
Transposable elements are Correct Answer-segments of DNA that move from one site to another
Which of the following is formed on the lagging strand during DNA synthesis? Correct Answer-Okazaki fragments
Why is ribosomal RNA especially useful for the study of phylogenetic relationships? Correct Answer-It is highly conserved
Membrane-enclosed organelles, such as nuclei, lysosomes, endoplasmic reticulum, mitochondria, and chloroplasts Correct Answer-form specialized compartments within eukaryotic cells for specific functions to occur.
An endotoxin is Correct Answer-The toxic portion of the LPS The disease anthrax is caused by the pathogenic bacterium ________, which produces heat-resistant structures known as ________ Correct Answer-Bacillus anthracis / endospores
Where within a eukaryotic cell is ribosomal RNA (rRNA) synthesized? Correct Answer-Nucleolus
Developments in the fields of immunology and medical microbiology were practical extensions of the work of Correct Answer-Robert Koch
Polycistronic transcription units are common in Correct Answer-Both Archaea and Bacteria
Bacteria with type IV pili Correct Answer-Likely exhibit twitching motility
The rigid layer that is present in the cell walls of Bacteria that is primarily responsible for the strength of the wall is known as Correct Answer-peptidoglycan
What is the biological function of endospores? Correct Answer-They enable organisms to endure extremes of temperature, drying, and nutrient depletion
Transcription of chaperones is greatly accelerated when a cell is stressed
by Correct Answer-Excessive heat
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