Define element, and give an example of an element.

Which of the following statements are correct (select all that is correct) Each antibody is specific to the antigen Antibodies act as signals to tell white blood cells to come and destroy the pathogen Antibodies are produced by our immune system and

Their is one establish method to solve all scientific problems? true or false

In science class, Maria observes a white-colored cut flower. She sees that the petals turn red when the flower is sitting in a vase that has red-colored water. She forms a hypothesis that the color reaches the flower through the stem.

What are the three main parts of a typical cell? (select all that apply.) ?

Why did viruses remain unseen for so long

Match each description with the correct division of the peripheral nervous system. somatic nervous system regulates voluntary activities parasympathetic nervous system regulates involuntary activities sympathetic nervous system called the rest and

Which of the following diseases is caused by a spirochete? tularemia relapsing fever rheumatic fever Rocky Mountain spotted fever

The brain of the nervous system and the endocrine glands of the endocrine system are similar to one another in certain ways. Both act to send messages to distant body parts. What is a significant difference of the activity of endocrine glands? A.

After reviewing the process of meiosis describe how an error during meiosis could lead to polyploidy

The requency of the red eyes (p ellele) in fruit flies is 63% what is the frequncy of the white eyes allele q allele