What is a base?

a) a substance that is alkaline

b) a substance that can accept an OH ion

c) a substance that can donate an H + ion

d) a substance that has a low pH value

Mengapa paru paru dan jantung bekerja lebih kuat semasa berlari

What is a nucleotide?

What are the three most abundant elements found in Earth's crust?

Which of the following is a pair of transgenic organisms? a) an amoeba and a hybridized peach tree b) a Bt corn plant and a polyploid banana tree c) a hybridized peach tree and a polyploid banana tree d) bacteria that make human insulin and a Bt

Are offsprings such as Flatworms that a genetically identical to. The parent are produced by asexual or sexual reproduction?

Explain Why, in winter, most of the meltwater produced by salting the roads will not infiltrate the soil

Which processes are directly responsible for the presence of the different species of wheat and corn shown in the diagram above?

Which diseases are caused by viral infection? Anthrax West Nile Measles Hepatitis A Chicken Pox Tetanus Rabies Bubonic Plague Influenza (flu) Hepatitis B Mononucleosis Gonorrhea Lyme Disease Cholera Whopping Cough Common Cold

Which of the following is not true regarding the formation of a dipeptide? A. a molecule of water is produced B. two amino acids are joined together C. a double bond forms between carbon and nitrogen D. a protein is formed

What are the two characteristics of autotrophs