Which structures make up the innermost whorl of a flower?
a. the receptacles
b. the carpels
c. the sepals
d. the stamens
Answer: b. the carpels
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If a positive reaction is last observed at a dilution of 1:256, the titer is
A. 128. B. 1/512. C. 1/256. D. 256.
Binary fission is:
A. cell division by meiosis B. cell division by mitosis C. cell division by simple splitting D. fluorescent in situ hybridization (FISH) E. exchange of genes between two cells
The transfer of _____________ from one molecule to another is an oxidation-reduction reaction, or redox reaction.
Fill in the blank(s) with the appropriate word.
Sputum is obtained by
A.) swabbing the mouth to sample saliva. B.) a clean catch urine sample. C.) the patient coughing up mucus from the lower respiratory system. D.) a spinal tap above the chest. E.) a throat swab.