Which sequence presents the cells in oogenesis in the correct order?
a. primary oocyte, secondary oocyte, oogonium
b. primary oocyte, oogonium, secondary oocyte
c. oogonium, secondary oocyte, primary oocyte
d. oogonium, primary oocyte, secondary oocyte
Answer: d. oogonium, primary oocyte, secondary oocyte
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A. semelparous species. B. altricial species. C. precocial species. D. iteroparous species. E. sympatric species.
Which of the following will be found in testes and ovaries to make the steroid hormones?
a. chloroplast b. mitochondria c. rough ER d. peroxisome e. smooth ER
Some members of the Archaea lack a cell wall.
Answer the following statement true (T) or false (F)
Following reports that the amount of DNA varied over time within cells, scientists in the early 1900s concluded that the genetic material had to be
A) DNA. B) RNA. C) protein. D) lipids. E) carbohydrates.