Where does meiosis occur in males?
Answer: testes
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Which of the following correctly lists the levels of biological organization?
1.tissue, cell, organ, organ system, organism 2.cell, organ, tissue, organ system, organism 3.cell, tissue, organ, organ system, organism 4.cell, tissue, organ system, organ, organism
Which of the following is in contact with the soil into
which it is growing? a. vascular cylinder b. apical meristem c. root cap d. pericycle e. outer cortex
You have isolated a piece of DNA that you believe contains an interesting gene. Using a mix of RNA polymerase and ribonucleotides, you perform in vitro transcription
However, even though all of your controls work, no mRNA is created from your DNA fragment. Working backward, you note that your DNA preparation removed approximately 250 base pairs from the 5' end of the gene. The most likely explanation is that during DNA preparation A) the termination signal was removed. B) the RNA polymerase became inactivated. C) the 5' methyl guanosine cap was removed. D) the promoter was removed. E) None of these explains the negative results.
Approximately how many molecules of ATP are produced from the complete oxidation of one molecule of glucose (C6H12O6 ) in aerobic cellular respiration?
A) 2 B) 4 C) 18-24 D) 30-32