What features of meiosis allow for independent assortment of chromosomes?
A. random alignment of homologous sister chromatids on the metaphase plate
B. separation of sister chromatids
C. reduction of chromosome number from diploid to haploid
D. both the separation of sister chromatids and the reduction of chromosome number from diploid to haploid
E. All of these features allow for the independent assortment of chromosomes.
A. random alignment of homologous sister chromatids on the metaphase plate
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A physician discovered a cancerous tumor in the cartilage of a patient. What type of tumor is this?
A. myoloma B. retroviral C. sarcoma D. leukemia E. cyst
The microbiologist receives a sputum specimen that upon preliminary Gram staining review of direct smear, contains numerous squamous epithelial cells and an excessive amount of contami-nating normal flora. Based on the microbiologists knowledge, the microbiologist rejects the spe-cimen and requests a new sample. The physician insists that the microbiologist culture the sample as received. The
microbiologist should: a. disregard the physicians request and dis-card the specimen. b. notify their supervisor and write-up the physician. c. set-up the culture as ordered noting the lack of specimen integrity that may com-promise culture results. d. the microbiologist should have not called the physician and process the sample as received.
Viruses that infect bacteria are specifically called ________.
A. prions B. satellite viruses C. viroids D. bacteriophages
Oxidation and reduction reactions are chemical processes that result in a gain or loss of:
A. protons. B. atoms. C. molecules. D. neutrons. E. electrons.