In the human body keratin is a protein which is essential for healthy hair and nail growth. If a patient went to the doctor concerned with brittle hair and fingernails which essential element would the patient most likely be lacking?

What would happen if flowery vines were growing all over the ceiling and walls

Fossils can reveal which of the following about a species or organism? the microscopic features of the organism the appearance of the organism and its structures the growth stages of the organism's species how the organism interacted with other

In humans, the trait of freckles exhibits simple Mendelian inheritance patterns. The allele for freckles is dominant (F), and the allele for no freckles is recessive (f).

Plants have a cell wall made of cellulose. What is the function of the cell wall in plants? A) The cell wall controls division of the cell. B) The cell wall provides structure to the cell. C) The cell wall controls the functions of the cell.

How do desert animals survive with very little drinking water?

Which statement best describes an operon? a. several genes, next to each other in eukaryotic DNA, that are transcribed as a single piece of mRNA b. a single gene in prokaryotic DNA that is transcribed as a single piece of mRNA c.

Why does the moon have phases

The pheromones by which ants transmit information are

Do you agree with this statement? Single-celled organisms are very simple creatures Why or Why noy?

What is the main purpose of sustainable agriculture? A. To feed a growing world without damaging the ecosystem B. To produce cheap and abundant food at a high cost C. To increase farming efficiency and profits D.