What is an ion?

A.

a group of two or more atoms that acts like one atom

B.

a compound that contains two elements

C.

a particle in the nucleus of an atom that has no charge

D.

an atom or particle with a positive or negative charge

Which 3 components make up almost all the energy Earth receives from the Sun

The cleft chin trait follows a dominant-recessive inheritance pattern with cleft chin being the dominant trait. john is heterozygous for a cleft chin as is his wife betty. john and betty have three kids all of which have a cleft chins.

which macromolecules are polymers made of nucleotides (A) fatty acids (B) nucleic acids (C) carboxylic acids (D) amino acides

DNA replication allows the basic units of heredity found on segments of DNA, called , to be passed on from parent to offspring.

What is the primary reason we sweat? a. to maintain blood volume b. to excrete waste products c. to regulate body temperature d. to maintain sodium balance?

Jessi consumes a diet of 1920 total kcalories that has 80 g of fat. what percent of jessi's diet comes from fat? (give answer to the appropriate reporting digit. only give the value. do not include the term percent or its abbreviation.)

Scientists break down evolution into catogories

The process of sediments being compacted and cemented to form sedimentary rocks is called A. metamorphism. B. deposition C. crystallization D. lithification

What is presumptive identification of a microorganism?

Which statement best describes the climate of a city? Select one: The average annual temperature of Austin, TX is 68.5°E San Antonio, Texas had a high temperature of 102°F today. Dallas, Texas had 8.6 centimeters of rain today.