Which of the following is a major principle upon which cell theory is based? A All cells form by free-cell formation. B All cells have DNA. C All organisms are made of cells. D All cells are eukaryotic.

Pseudomonas aeruginosa causes the top of an open (aerobic) OF tube to turn yellow. However, an oil-covered (anaerobic) OF tube inoculated with the same strain remains entirely green. What is the best explanation for these results?

Which one of these is not an example of intracellular communication A. Molecule in a cell changes function of cell B. Control of cell division C. Molecular movement within a cell D. Reaction to pheromones

If blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion? 1. O+ 2. O- 3. AB+ 4. AB -

How do you think different light intensities might affect the rate of photosynthesis

What happens when oxygen atoms share electrons? - APEX A. They form ionic bonds B. They form polar molecules C. They form water molecules D. They form covalent bonds

All of the following would be questions that could be scientifically investigated except: Question 8 options: What is the best advice a parent can give a child? Will equal sizes of wood and aluminum have the same mass?

Do you think viruses are living organisms? Explain your answers. Anyone that answers I will mark as brilliant

By dividing twice, the original parent diploid cell is able to produce 4 haploid gametes. true or false

What happens to the products of respiration

If a pollutant that kills bacteria enters the pond what will be a possible impact on other organisms in the food web