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

Which statement best describes the events that take place within the mitochondrial membrane? A. Potential energy is stored in glucose molecules. B. ATP is produced for use by cells. C. The Krebs cycle breaks down glucose. D.

What is crossing-over? When does it take place?

A pea plant that is tall has a dominant trait. Which statements are true about the genotype/phenotype relationship of the plant? Select all that apply. a. If the phenotype is tall, the genotype must be tt. b.

light energy in both visible and invisible forms is a form of ___ energy a) kinetic b) potential c) chemical d) electromagnetic

Cytoplasm divides unequally in meiosis during the production of

Which of these activities is not considered to be a marine ecosystem threat? overfishing. ocean pollution. coastal development. ocean alkalinity?

What is another common intramuscular injection site for 2mL or less of a drug? a Ventrogluteal b. Vastus Lateralis c Deltoid d Infraspinatus

Which element acts as a hydrogen acceptor during aerobic respiration? (A) hydrogen (B) carbon (C) oxygen (D) nitrogen (E) phosphorus Can someone explain this one for me?

How do bacteria and viruses differ in the ways they affect cells in the body?

What does high water potential mean?