Bootcamp Quiz #5

The nervous system includes the brain, spinal cord, and nerves. The brain is an example of which level of hierarchical organization within the body?

• cell

• tissue

• organ

• organ system

Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha's setup and data are shown below. What is the outcome variable (dependent variable) in this experiment?

• the number of bubbles produced

• the type of plant placed in the beaker

• the distance of the light source from the plant

• the amount of time the bubbles were counted

Tags

NGSS.MS-LS1-6

Squirrels eat nuts for energy and to grow and repair their bodies. Which of the following best explains how the material in a nut is used for squirrel growth and body repair?

• The atoms in the nut change into the atoms that the squirrel's body needs.

• The elements in the nut change into the elements that the squirrel's body needs.

• The elements in the nut are rearranged to make the molecules the squirrel's body needs.

• The compounds in the nut are the same as the compounds in the squirrel, so they attach to the body parts of the squirrel.

Tags

NGSS.MS-LS1-7

The structures in living things are complex and highly organized. Which of the following lists structures in living things from the lowest to the highest level of complexity?

• cells, organs, tissues, systems

• systems, tissues, organs, cells

• systems, organs, tissues, cells

• cells, tissues, organs, systems

Tags

NGSS.MS-LS1-3

In the Nitrogen atom shown, what do the black spheres represent?

• electrons

• neutrons

• photons

• protons

Tags

NGSS.MS-PS1-1

Based on the periodic table of elements, which of the following sets of elements have similar properties?

• Pb, Sn, Kr

• Ne, N, O

• Cl, Br, I

• O, S, N

In early versions of the periodic table, elements were arranged based upon atomic mass. The elements on the periodic table are now arranged in order of which of the following?

• atomic number

• date of discovery

• number of neutrons

• reactivity with hydrogen

The Law of Conservation of Energy states that energy can be transformed, but not created nor destroyed. Why is it considered by scientists to be a law and not a theory?

• It is so widely accepted that it would be unwise not to go along with it

• It began as a theory, but as evidence for it mounted it became a law

• It was described very early in the history of science, before theories were developed

• It provides a description of a natural event, not an explanation of how the event happens, so it is considered a law

All matter is made of atoms. Which of the following statements best describes the basic structure of an atom?

• Electrons and protons are in motion around a nucleus that contains neutrons

• Neutrons are in motion around a nucleus that contains protons and electrons

• Protons are in motion around a nucleus that contains electrons and neutrons

• Electrons are in motion around a nucleus that contains protons and neutrons

Tags

NGSS.MS-PS1-1

Carbon dioxide (CO2), carbon monoxide (CO), and methane (CH4) are all gases that contain carbon but have different properties. Which of the following best explains why this happens?

• By combining different compounds, new atoms with different properties are created.

• By combining different compounds, new elements with different properties are created.

• By combining different elements, new elements with different properties are created.

• By combining different elements, new compounds with different properties are created.

Tags

NGSS.MS-PS1-1