OAT - practice test question (Natural Science) Exam Questions with Correct Answers
What is the first event that occurs during meiosis? A. Homologous chromosomes segregate to opposite poles. B. Sister chromatids segregate to opposite poles. C. Homologous chromosomes align at the midplate of the cell. D. Homologous chromosomes pair and synapse. E. Chromosomes condense in a diploid nucleus. - ANSWER-E. Chromosomes condense in a diploid nucleus. (chromosomes of a diploid nucleus become distributed into four haploid nuclei) A sample of blood is added to a test tube containing a 1.6% salt solution. A short while later, the red blood cells are observed to be smaller and wrinkled in shape due to water loss. This indicates that - ANSWER-red blood cells are *hypotonic to the* 1.6% salt solution *red blood cells in water are always going to lyse because solute concentration is higher in the red blood cell* The Solute inside a Red blood cell will cause - ANSWER-a solution to rush inside and cause the red blood cell to burst. Which of the following types of lipids are associated with the plasma membrane of eukaryotic but not prokaryotic cells? A. Glycolipids B. Phosphoglycerides C. Sphingolipids D. Steroids E. Vitamins - ANSWER-D. Steroids Which of the following is not a known function of any hormone?
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