Explain how the amount of eumelanin and number of melanosomes difference between a person with lighter color skin and a person with darker color skin

What is a substrate and give an example

How can a microscope be used to determine if the specimen is a living thing

Guard cells are responsible for allowing carbon dioxide to enter a plant. They also control the release of oxygen and water to the atmosphere. Based on this description, where are guard cells located? A. on the surface of leaves B.

Adjacent cells in lymphatic capillaries overlap each other loosely. what is the unique structural modification that increases their permeability?

On a coral reef in the Florida keys, a population of damselfish has two color variation: brown and pink.

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.