An unknown element is found to contain 45 protons and an atomic mass of 64, what is its atomic number?

The square above is based on the eye color of two parents, one of whom has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?

The spleen functions are part of the _____ system.

Which of the following completes the sentence above?

Which of the following is an example of deductive reasoning?

Which of the following is a possible cause of herniation of discs?

Which of the following is a characteristic of the autonomic nervous system?

During photosynthesis, which two compounds are combined to create the output of glucose and oxygen?

Questions 8 & 9 are based on the following diagram:

Which of the following is true about the frog?

Which statement can be inferred about amphibians?

What would this diagram be useful for?

What type of bond between the complementary bases of DNA stabilizes the double helix structure?

Which of the following subatomic particles are found inside of an atom’s nucleus?

Which of the following statements is true regarding trophic levels?

Why does the human eye perceive a red colored dress as the color red?

In a lab experiment designed to test the rate at which plants grow under artificial light, the kind of light used is which type of variable?

Which organ system is primarily responsible for regulating metabolism, mood, and growth?

In a vacuum, why doesn’t an elephant accelerate faster than a penny as it falls to the ground?

Which train described below would have the greatest momentum?

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased. The type of correlation between these two populations could best be described as

The addition of a catalyst to a chemical reaction will have what effect?