The second law of thermodynamics states that the ________, or disorder, of the universe is constantly increasing
Fill in the blank(s) with correct word
entropy
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You are studying swimming motility in a pathogenic bacillus. You create mutations in random genes and then test which mutations effect swimming motility by looking at the mutant cells under the microscope
One of the mutant bacteria can not swim anymore, but still rotates around in a one spot when you watch them. Using electron microscopy you discover that some parts of the flagella are still present in the cell wall, but no long flagella are visible. Which gene do you think is mutated (i.e., missing) and which motility-related parts are still present in this mutant? What will be an ideal response?
Plants that are called C4 plants are better able to utilize ________ than C3 plants.
A. oxygen B. minerals C. water D. carbon dioxide E. chlorophyll
Acetylation
a. adds an acetyl group (CH3CO?) to the cytosine nucleotides of DNA. b. adds an acetyl group (CH3CH2?) to the DNA of a promoter sequence. c. adds an acetyl group (CH3CO?) to the histone protecting the transcription unit of a gene. d. adds an acetyl group (CH3CO?) to the histone protecting the promoter region of a gene. e. adds an acetyl group (CH3CH2?) to the RNA polymerase that will initiate transcription at the promoter region.
The theory of natural selection states that
A) random assortment of genes results in better physical characteristics in the following generations. B) individuals that mutate in response to changes in their environment will contribute the most genes to the next generation. C) only the largest and strongest individuals survive. D) all individuals live to reproduce in each generation. E) the most well-adapted individuals in their environments survive and reproduce, contributing the most genes to the next generation.