Blog

If 30% of an organism’s DNA is thymine, then

Scientists searching for new anticancer drugs treat a cell culture with a certain compound. Following treatment, they notice that the culture has stopped growing. Untreated cells from the same culture, however, have continued to grow. These results could indicate that the compound blocks the normal cell cycle. What else could have caused these results?

Which of these represents the net equation for complete aerobic respiration?

A schematic of stages of the cell cycle is shown. IDENTIFY the following cell cycle stage:  Synthesis Phase (enter your number choice):

MATCH one of the chapter terms to the definition below: The process by which mRNA, which encodes a gene’s base sequence, directs the production of a protein. (enter your number choice):

Suppose that in a certain community in London there were equal numbers of red-haired and green-haired individuals. (None of them dyed their hair. ) This hair-color trait was controlled by a single pair of alleles that followed the patterns of simple Mendelian dominance. Two people with red hair sometimes have children with green hair, but two people with green hair never have children with red hair. We can conclude that:

MATCH one of the chapter terms to the definition below: The genes that an organism carries for a particular trait; also, collectively, an organism’s genetic composition. (enter your number choice):

Photosynthesis takes place in this organelle: (enter your number choice):

The similarity in forelimb structure of humans, bats, and moles is evidence that they

 If the sequence of DNA on the template strand of a gene is AAA, the mRNA codon produced by transcription will be _______ and will specify the amino acid ______.