What provides an explanation for the presence of mitochondria and chloroplasts in present day cells?

Can sedimentary rocks have layers? If so, how would they form?

Which of the following statements about energy sources is NOT correct? A. Natural gas burns much more cleanly than gasoline. B. Coal is easy to obtain with minimal environmental damage. C.

Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells: Have a higher rate of reproduction. Have permeable membranes. Are much smaller. Have nuclei.

If a cell didn't have amino acids and could not produce them what would be the effect

A newborn's axillary temperature is 97.6°F (36.4°C). He has a cap on his head. His T-shirt is damp with spit-up milk. His blanket is laid over him, and several children are in the room running around his bassinet.

What is the mass of an atom that has 4 protons, 5 neutrons and 4 electrons? 5 8 9 13

Which of the following is one role of RNA polymerase during transcription? to switch uracil with thymine on the exposed gene to build a molecule of mRNA to break down an already existing protein to produce a start sequence

What is diluvial water

What disease can occur when the pancreas is not working properly?

Which of these objects are malleable? Check all that apply. (A) tin fork and knife from a camping set (B) antique ceramic vase (C) steel pole fence post (D) marble sculpture (E) glass tabletop (F) copper coin