This is a circular, double-stranded DNA molecule that is capable of independent replication. It usually occurs in bacteria. What is it?

A child has blue eyes whereas his mother has brown eyes. Which of the following explains why the child has blue eyes? Some diet proteins changed the eye color to blue. The DNA strands of the child twisted to produce blue eye color.

Explain how endocytosis, digestive enzymes and exocytosis work together to get rid of bacteria

The is the fluid component of blood.

What fact explains why petroleum is considered non-renewable? A) Petroleum can only be generated from dinosaur excrement. B) Petroleum is manufactured from an element that no longer exists.

Darwin noticed that birds that were good at finding scarce food in the winter had a better chance of survivng and producing offspring. What did he call his struggle for existence?

Shivering and sweating are two techniques that mammals use to a) adapt to the temperature b) develop a rise in body temperature C) maintain homeostasis d) use excess energy

During the process of cellular respiration, energy is released from (1) carbon dioxide (3) water molecules (2) oxygen atoms (4) chemical bonds

Protist get energy by

10. What is a genotype? A an organism's combination of genes for a trait B an organism's appearance as a result of its genes C the ratio of dominant to recessive genes in an individual D the collection of dominant genes in an organism

How much of a person's weight is water?