Why can someone have cells with no y chromsome and other cells with a double - y chromosome?

What is the normal body temperature in degrees Celsius? -

Why have only a few people ever seen a total solar eclipse?

Which aspect of society has the most immediate effect on the progress of scientific research? using DNA databases to identify criminals building new school labs to replace older ones passing laws to prevent certain types of scientific research

Describe how the diffusion of ions across a cell membrane differs from the diffusion of non polar molecules across the cell membrane

What system maintains the pH of human blood at very near 7.4?

Name two hormones that are also neurotransmitters using your knowledge

What characteristics of extremophiles make them valuable examples of what life might be like on another planet?

Which of the following structures does a flatworm expel solid waste

What is the main function of fruit

Describe logistic population growth from a small population to a large one. be sure you talk about the population growth rate (the numbers of individuals added to the population over time) and carrying capacity.