Hair is produced at the base of hair follicles from columns of cells that die when they are filled with keratin.

True or false?

Which of the following is not made up of keratin?

a.

fingernails

c.

sweat glands

b.

hair

d.

epidermis

What is the percentage of adenine in a salmon?

Which artificial sweetener was almost banned because of a proposed relationship with cancer in experimental animals?

In multicellular organisms, what is the higjest level of cellular organisms

A plant with purple flowers is allowed to self-pollinate. generation after generation, it produces purple flowers. this is an example of:

Things in an experiment that may influence your data

Which type of relationship exists between the birds and the tree

What is one way that humans depend on the Earth's oceans? A Most energy that humans use is provided by the oceans. B. Human-made goods must be delivered on the oceans. All human fun activities occur on the oceans. D.

What type of energy is needed for active transport

If a genetic mutation occurs in the phenotype of individual, what must be true for the new phenotype to be inherited by the offspring of the individual? The mutation must be beneficial. The mutation must be on a recessive allele.

In which animal food and its products can you commonly find the disaccharide lactose?