A mature active cell in a healthy human has the following features: a cell membrane no nuclear DNA molecules that bind with oxygen.Which of the following statements about this cell…

Some rabbits have a genetic condition. The dominant allele codes for this condition. A homozygous dominant rabbit mated with a rabbit that did not have the condition. They had three…

A lizard was placed in a chamber with a constant flow of air. The temperature of the chamberwas varied between 25 °C and 10 °C. Apart from temperature and time,…

A sample of healthy human cells contains 4 cells. After they were allowed to divide 5 times using the same type of cell division, there were 128 cells in the…

The diagram shows four experiments used to investigate movement of substances across dialysis tubing. This tubing is a partially permeable membrane which allows both glucose and water to pass through…

The following statements are features of an enzyme from a healthy human.1 It works at an optimum pH below 4.2 It digests a substrate into amino acids.3 It works at…

The diagram shows the results of a breeding experiment using a homozygous black mouse and a white mouse. Mouse 1 was then allowed to mate with mouse 2. Using C…