Sc. Laws vs Theories - Cell Theory - LofO - Cell Parts

Cellular Respiration occurs within me and I am in BOTH plant and animal cells. I am a....

• Nucleus

• Golgi Body

• Cytoplasm

• Mitochondria

I am often referred to as the "packaging system" within a cell. I "package" proteins and ship them to the Golgi Body. I am a...

• Cytoplasm

• Endoplasmic Reticulum

• Baconidis

• Golgi Body

Tags

NGSS.MS-LS1-2

A good experiment has several characteristics. Which characteristic is part of a good scientific experiment?

• Results can be reproduced.

• Results are NOT reviewed by peers.

• Results are based on a small sample size.

• Results are based on an undisclosed process or procedure.

Tags

NGSS.HS-PS1-3

Laws tells us that it happens but doesn’t describe how or why.

• True
• False

Scientific theories are based on

• general assumptions of how systems work.
• mathematical principles that can be proven true.
• large amounts of data collected over time.
• observations from within only one scientific discipline.

In 1897, Joseph Thomson discovered that atoms contained electrons. He proposed a change in the atomic theory of that time, and the theory was modified because of his discovery. Since Thomson’s discovery, atomic theory has been further modified. What is the best explanation for why scientific theories are modified?

• Theories more than ten years old are usually out of date.

• Scientists want to prove that the work of other scientists is wrong.

• New evidence that supports a change prompts scientists to modify earlier theories.

• So much information is available today that it is harder to focus research and disprove theories.

Lilly was trying to explain to her friend the difference between a theory and a law in science. She used the theory of plate tectonics and the law of superposition as examples. Lilli explained the difference by using non-scientific language. Which statement could Lilly use to correctly describe the difference between a theory and a law in science?

• A theory describes a natural event, while a law explains it.

• A theory explains a natural event, while a law predicts it.

• A theory explains a natural event, while a law describes it.

• A theory predicts a natural event, while a law explains it.

Which of the following scientists concluded that all animals are made of cells?

• Rudolf Virchow
• Matthais Schleiden
• Robert Hooke
• Theodor Schwann

Tags

NGSS.MS-LS1-1

Which of the following scientists was the first to observe bacteria?

• Anton van Leuwenhoek

• Matthais Schleiden

• Robert Hooke

• Theodor Schwann

Which of the following statements is not part of the cell theory?

• Cells are the basic unit of structure and function in all living things.
• All cells are produced from other cells.
• Only animal cells are composed of cells.
• All living things are composed of cells.

Tags

NGSS.MS-LS1-1