A 200 - gram sample of a radioactive nuclide is left to decay for 30 hours. At the end of 30 hours only a 100 g of the sample is left. What is the half life of the nuclide sample

What is something true about all cells?

A person has a condition that makes her bone weak and easily broken. what part of the bone is most likely the cause of this condition? a / compact tissue b/foramina tissue c/spongy tissue d/bone marrow

When we burn energy in our bodies, 90% of the energy is transformed into what?

How do scientist use models to predict the weather?

Scientific name for scalp?

Which star has a lower temperature then our sun but is more luminous

Assuming that an ER signal peptide forms an alpha helix, is that helix likely to be amphipathic? Why or why not?

Which term describes anything that causes an organism to react?

This is a genetic mutation caused by the insertion or deletion of one or more nucleotides that changes the amino acid sequence from the site of the mutation forward.

WhAt is sceince in english