One of your skin cells is about to replicate its dna. what happens first?

question 2 options:

rna enters the nucleus from the cytoplasm to be copied.

the ribosome attaches to the dna.

the helicase enzyme unwind the dna molecule into two strands.

an rna molecule attaches to a dna molecule.

The location of the stomach is the diaprham

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic