Which substance on the plasma membrane identify chemical signals from outside the cell?
question 32 options:

carbohydrate chain

cholesterol

membrane protein

transport protein

Why is a dominant allele called dominant

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?