What must a cell do first to divide successfully?

duplicate its genetic information

increase its ratio of surface area to volume

increase its number of chromosomes

Colors of light most useful in photosynthesis are A) green, yellow, and orange B) red, violet, and blue C) infrared, red, and yellow D) red, white, and blue

2. All genes are activated and expressed all the time. True False

Which of the following is a source of chemical weathering that has been exacerbated by air pollution from industrial plants and car emissions? A. acid rain B. oxidation of iron C. formation of clay D. dissolving of limestone

Diffusion can be defined as active transport of particles up a concentration gradient. movement through a cell membrane using energy from ATP movement of particles from a region of high concentration to a reaigon of low conentration movement of

Puffer fish poison blocks voltage-gated sodium channels like a cork. what effect would this neurotoxin have on the function of neurons?

Which of the following biotic organisms makes its own energy from inorganic substances? producers consumers decomposers minerals

Which phrases describe both Jupiter and Saturn? Check all that apply. (atmosphere contains hydrogen and helium) (has 50 or more moons) (has a density less than that of water) (has multiple rings) (has fast winds and storms)

Which process releases 2260 joules of heatenergy per gram of water into the environment? (1) melting (3) condensation (2) freezing (4) evaporation

Like surface water and groundwater, glaciers shape the land through erosion and deposition. Fill in the blanks to complete each statement about glaciers. Glaciers cause erosion by abrasion and. The sediment deposited by glaciers is called.

What two features make hair a good subject for establishing individual identity? to which layer of the hair shaft are much of these features attributed?