Decide if the following statements are True or False. If the statement is False, rewrite the statement to make it True. a. Most cells are visible to the human eye without a microscope.

b. The cell carries out all functions for survival.

c. Prokaryotes are unique because they have no nucleus.

d. Eukaryotes are complex cell with organelles but with no nucleus.

e. Cells have cytoplasm.

f. Almost all living things are made of cells.

g. The cell membrane prevents some chemicals from entering the cell.

h. Plants need chloroplasts for photosynthesis.

i. Animal cells have a cell wall instead of a cell membrane.

j. In a cell, the breakdown of food molecules releases energy.

k. The cell passes waste materials from inside the cells to outside the cells.

l. Cells reproduce in orderly fashion according to the type of cells.

On a backpacking trip, kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 calories. at the school track, janelle runs the 100-meter sprint in 13.5 seconds, burning 10 calories. afterward, janelle’s leg muscles are aching and she is breathing hard, while kenny maintains normal breathing all day, even though he burns 400 times more calories than janelle. which two statements offer the best explanation for this phenomenon? a. if the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt." b. aerobic cellular respiration produces more energy, but its use is limited because of lactic acid buildup in the muscles and the resulting "oxygen debt." c. after about 90 seconds of intense exercise, the muscles become depleted of oxygen, and anaerobic respiration can no longer function to produce atp, resulting in "oxygen debt." d. the rate of energy demand determines how the muscles will obtain energy, either from cellular respiration or from lactic acid fermentation if not enough oxygen is present.