Rna polymerases join nucleotides through what kind of bond?

30% of earth's water is found where

Iron is an essential mineral needed for your body. Which green vegetables are high in iron? What body system is dependent on a constant supply of iron, and what deficiency is caused when this mineral is lacking?

The cells in cardiac muscle would probably have a high number of?

Which vitamin a compounds act like hormones, regulating cell differentiation, growth, and embryonic development?

What substances acts as a buffer in natural water

True or false: the northern lights are caused by earth magnetic field

What is the name of the family that humans are classified in?

Which process produces a greater number of offspring? chromosome duplication asexual reproduction gamete formation sexual reproduction

Aquatic plants do not contain a) chloroplasts b) cells c) lignin d) nuclei e) chlorophyll

Jennifer's baby brother had infantile Tay-Sachs disease (TSD), but Jennifer did not have the disease. When Jennifer grew up and got married, her third child also had infantile TSD. How is this possible? A.