Directions: Select each correct answer. More than one answer may be correct. During which of these processes is oxygen consumed?

when forests are burned to clear land for farming

when aerobic bacteria break down dead algae in a pond

when plants perform photosynthesis

when plants or animals perform aerobic cellular respiration

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

In one or two well-crafted paragraphs in your laboratory journal, summarize the process in which normal cells become cancer cells. your paragraph(s) must include each of the terms listed below. underline each term in your writing:

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.