Explain how chromosome number is manipulated by meiosis and sexual reproduction.

Mention three differences between bacteria and archaea.

What would happen if the cell membrane were completely made of a polar

Which day of the year has the shortest period of daylight in the Northern Hemisphere? A. the spring equinox B. the summer solstice C. the fall equinox D. the winter solstice

Why is it difficult to find fossilized plants and animals in the same place? a. The animals would have eaten all of the plants c. Animals would have gone extinct without many plants b. There were no plants in the Paleozoic era d.

What is the complementary DNA strand of the sequence given: CGU CGC CGA CGG AGA AGG?

Greg checks his watch one day at noon when the Sun is directly overhead. He decides to check his watch when the Sun is directly overhead again tomorrow.

What is the primary function of the juxtaglomerular complex?

Which is an example of how stem cells are currently being used

Describe the type of evidence that scientists used for classifying organisms before they were able to sequence dna

Which of the following is true for DNA but not RNA? Release of PPi from the monomer provides the energy for polymerization. It has 4 different bases. It has secondary structure. None of the above; all are true for both DNA and RNA