How does the carbon dioxide necessary for photosynthesis enter plants? a. through their roots b. through openings in the leaves called stomata c. the plants produce their own complete supply d. none of the above

Kira got out of breath while performing, and began breathing slower and deeper after the performance. Which of the following best describes the effect on the hemoglobin in the blood during the performance? A.

what is the stage of mitosis where chromosomes align in the middle of the cell before being separated into each of the two daughter cells.

How long does it take for a giraffe to give birth after water breaks?

What is not a function of the skeletal system? a) providing movement b) protecting organs c) storing minerals d) making vitamins

What kind of mutation causes a shift in the way a ribosome will read the mRna

Which of the following attributes of oxygenated blood makes functional MRI (fMRI) possible? A. It can be seen using x-rays. B. Active areas of the brain take up more oxygenated blood than they need for their energy requirements. C.

How long will it take to get out our universe?

If the temperature of the body rises above 37°C (about 99°F), negative feedback is triggered to

A person with a body mass index of 26.5 is classified as

When electrons flow along the electron transport chains of mitochondria, which statement is true A) electrons from nadh get directly transferred to Cyt c B) nad + and fad are regenerated C) energy from atp hydrolysis is harvested for electron