Which of the following correctly describes what a mutation is?

A. A change in in the DNA code of an organism

B. A change to a gene of an organism

C. A change to the nucleotide sequence

D. All of the above

One idea of biogreaphy is that the linger an environment is geographicly separated from others the more istent its species will be which area of the erth would you expect to have the most distinct species? A. Central Asia B. Australia C.

Which kind of nutrients cycle through the atmosphere?

Is currents shape rivers over long periods of time true or false?

Two species of similar-looking insects have the same coloration, although one is poisonous and the other is not. This is likely an example of a. an analogous structure b. a homologous structure c. camouflage d. mimicry

The study of biology can be used in what application

Which of the following is a feeding source for fens? aquifers dexfoliants exfoliants nitrates

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