What is the difference between dna, chromosomes, chromatid, genes, and alleles?

The cell membrane allows some, but not all, molecules to cross. What terms describes this property?

Which of the following statements about enzymes is not true? A. Enzymes work best at specified pH B. All enzymes have the same shape as their substance C. Enzymes are protiens D. The shape of an enzyme allows it to do its job

3. List three other types of evidence that plants existed in Antarctica. (besides that there were plant fossils found)

Biologists notice that a population of ferrets introduced into a reserve begins to show exponential growth. The figures represent the population of the ferrets for the first four years after their introduction.

Organisms that use bulk flow to move oxygen are able to:

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? A) sporopollenin B) lignin present in cell walls C) pollen D) use of air currents as a dispersal agent E) megaphylls

A client complains of abdominal discomfort and nausea while receiving tube feedings. which intervention is most appropriate for this problem? change the feeding container daily. give the feedings at room temperature.

What happens with ATP during glycolysis?

Diciduous forest are found mainly in the temperate climate zone. Why are these forest not found in the tropical or polar zones?

After a signal is transmitted from the eyes through the optic nerve, which part of the brain processes the visual information? A. The limbic lobe B. The occipital lobe C. The frontal lobe D. The temporal lobe