An element can have multiple isotopes. Each of the different isotopes of the same element has a different:

a. number of electrons

b. number of protons

c. mass number

d. atomic number

The approximate number of genes humans have?

How do volcanoes above subduction zones generally differ from volcanoes above hot spots?

What is the genetic make up of the offspring in asexual reproduction?

Which of the following are characteristics of living things?

If two species from the same kingdom met would they attack each other

What are three main ways in Which organisms interact

Which of the following is NOT an important source of resistance to blood flow? Which of the following is NOT an important source of resistance to blood flow? total blood volume blood viscosity vessel diameter vessel length

The genotype for Tay-Sachs disease is tt. A homozygous dominant man and a heterozygous woman have a child with the genotype Tt for Tay-Sachs. Which term describes their child? A. purebred B recessive C. affected D. carrier

How many electrons are in a nucleus

In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community? a. Chromosomes are made up of protein and nucleic acid. b. Chromosomes are found in the nucleus. c.