In the 1600s, which scientist discovered microbes in pond water by using a microscope? A. Theodor Schwann B. Robert Hooke C. Anton van Leeuwenhoek D. Matthias Schleiden

A kilogram in an SI unit. Which quantity might measure in kilograms A. temperature B. mass C. length D. electric current

if a father has type a blood and a mother has type b blood what blood type (s) could their children possibly have

A leukocyte is responsible for

If your body temperature gets too high, why is it dangerous? A. Reactions become too slow for cells to survive. B. Enzymes become denatured. C. Vasoconstriction can rupture blood vessels. D. It is not dangerous.

Which of the following accurately describes carbon atoms? A. Carbon atoms can only form triple bonds with other carbon atoms. B. Carbon atoms only have three electrons available for bonding. C.

What component of the earth's atmosphere is decreased due to photosynthesis

Two birds that look very similar to each other have always been considered two distinct species based on differences in their body size and in where they live.

This system is used all over the world. Why do you think Latin is used instead of a more modern language?

Which of the following cellular adaptations assist many unicellular organisms with locomotion? A. Mitochondria B. Chloroplasts C. Cilia D. Ribosomes

The larval forms of certain taenia species, which typically infest muscles of mammalian intermediate hosts is also called a