A disease called phenylketonuria causes mental retarnation, reduces skin pigmentation, and also affects the coloration of urine. What kind of effect is exhibited by the gene responsible for this disease?

Which statements describe global winds

Which choice incorrectly pairs the common name of the vitamin with its chemical name?

Antibodies are produced when the body is exposed to A. white blood cells. B. receptor proteins. C. antigens. D. macrophages.

What is the geologic time scale?

A team of researchers is diving to the ocean floor to study seaweed and fungi. Which zone oz the ocean are they going to explore? -abyssal -intertidal -pelagic -benthic -deep

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

Why is it necessary to do a spinal tap when you suspect a bacterial infection of the central nervous system? why can't you use a blood test?

Name the major greenhouse gasses and how they get into the atmosphere