Why is a person who has Klinefelter's syndrome (XXY) a male, even though he has two X chromosomes in his cells?

Why are highly conserved proteins good for constructing phylogenies?

Acid chyme produced by the stomach is neutralized in the intestine by what?

Which of the following choices is the main goal of sustainable practices? A. To respect the free market B. To use natural resources C. To repsect natural systems D. To support economic growth

Which group (s) below contain single-celled and multicellular organisms? A. algae B. fungi C. protozoa D. All of the choices are correct. E. algae AND fungi

Write some similarities and differences between the inner planets and the outer planets

From the following list, which is a limitation to using an electron microscope? can only view live samples the limited amount of magnification the high expense short sample preparation time

Why does air at 75% relative humidity and 30°C make your skin feel stickier than air at 75% relative humidity at 10°C? A. Warm air rises while cold air falls. B. The warmer air contains less water vapor per unit of volume. C.

When the two solutions are mixed, a clear solution with white powder at the bottom results., What has caused this change?

What receptor type is exemplified opening a channel to get sodium into the cell

What is the total amount of tissue of all organisms in a food chain called?