Indricotherium was an extinct ________ that lived in Asia during the Oligocene

a. arboreal marsupial
b. relative of the rhinoceros
c. egg-laying mammal
d. giant anteater


b

Biology & Microbiology

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Sputum from a patient with a history of tuberculosis due to Mycobacterium tuberculosis bacteria is collected and sent to the microbiology lab for analysis. X-ray analysis and an acid-fast smear made from the sputum indicate that the patient has active tuberculosis. The physician has requested that the sputum be analyzed for pathogen load, but because colonies of Mycobacterium typically take between 3 to 8 weeks to appear on agar, results from traditional culture methods are often delayed. If you were the microbiologist in this case, what would you do? 

A. Using the sputum, apply end-point PCR with primers to Mycobacterium tuberculosis DNA to estimate the pathogen load, then follow up with a traditional culture. B. Set up a traditional culture on the sputum, then use the colonies for real-time PCR with primers to Mycobacterium tuberculosis DNA to quantify the pathogen load. C. Set up a traditional culture on the sputum, then use the colonies for end-point PCR with primers to Mycobacterium tuberculosis DNA to quantify the pathogen load. D. Using the sputum, apply real-time PCR with primers to Mycobacterium tuberculosis DNA to estimate the pathogen load, then follow up with a traditional culture. 

Biology & Microbiology

DNA fingerprinting is

a. a way to identify the species a sample came from. b. a way to distinguish between two individuals of the same species. c. a method that examines the DNA sequences encoding for the tiny ridges and valleys that provide texture to the pads of human fingers. d. a way of extracting DNA samples from human fingerprints. e. a way of determining the sequencing of the human genome.

Biology & Microbiology

Skin color in humans is a(n) ____________________ trait

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is not a protective mechanism seen in the stomach?

A. rapid division by and replacement of epithelial cells B. secretion of proteinases as zymogens C. mucus secretion D. salivary amylase E. All of these are mechanisms which protect the stomach

Biology & Microbiology