15. Xavier and Jill are practicing the 100-meter sprint. Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick
energy needed for this intense exercise?
a. Glucose is converted to pyruvic acid, followed by the aerobic pathways of the
Krebs cycle and the electron transport chain.
b. Glycolysis produces pyruvic acid and 2 molecules of ATP, then in the
absence of oxygen, alcoholic fermentation regenerates NAD to keep
glycolysis running.
c. The pyruvic acid from glycolysis enters the mitochondria and is broken down
in the Krebs cycle.
Chapter 10 Test
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What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.