Consider a large algal colony like Cladophora or Microcystis, which plays host to a complex biofilm of bacteria. What is a specific benefit the algal host may receive from the relationship?

A. Glucose
B. A physical habitat
C. Water
D. Vitamin B12
E. Oxygen


Answer: D

Biology & Microbiology

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Which plant structure is responsible for gas exchange?

a. stroma b. stomata c. thylakoid d. grana e. stromal lamellae

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Which organisms are the most diverse forms of life?

a. protists b. fungi c. animals d. bacteria and archaea e. plants

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The societal challenges created by next-generation sequencing are related to

A) ethical questions of confidentiality and estimation of disease risk for individuals. B) the high cost of sequencing. C) the creation of genetically engineered babies. D) reliable data storage and analysis. E) ethical questions of confidentiality, estimation of disease risk for individuals, and reliable data storage and analysis.

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At an autosomal gene locus in humans, the allele for brown eyes is dominant over the allele for blue eyes. At another gene locus, located on the X chromosome, a recessive allele produces colorblindness while the dominant allele produces normal color vision. A heterozygous brown-eyed woman who is a carrier of colorblindness has children with a blue-eyed man who is not colorblind. What is the probability that their first child will be a blue-eyed female who has normal color vision? (Enter the probability as a percent. Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5)

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology