Why is it important for the immune system to be able to tell the differences between the animals own cells and pathogens

Each step in a food chain food web or energy pyraamid

A scientist claimed that he had cloned a guinea pig to produce two offspring, a male and a female. The claim is not valid because (1) guinea pigs can reproduce both sexually and asexually (2) the two offspring are not identical copies of the

Which of the following statements about genens and traits is true

This tool is used to organize your data before you graph.

Why is cell division triggered

What system includes oceans, lakes, rivers, and groundwater? a. geosphere b. hydrosphere c. atmosphere d. biosphere

Fungal spores a. are only asexually produced. b. cannot be seen in a light microscope. c. are used to identify fungi. d. are produced by molds but not by yeasts. e. are only produced under harmful environmental conditions

Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm.

What's the function of rough er

Milo is observing the things around his family's farm. He writes down four different resources and whether he thinks they are renewable or nonrenewable. The table below shows his notes.