latest 2024/2025
What defines living organisms separate from non-living things? - ✔️✔️Living things are made up of
basic units called cells, are based on a universal genetic code, obtain and use materials and energy,
grow and develop, reproduce, respond to their environment, maintain a stable internal
environment, and change over time
Discuss the scientific method and its use in acquiring knowledge. - ✔️✔️Involves observing and
asking questions, making inferences and forming hypotheses, conducting controlled experiments,
collecting and analyzing data, and drawing conclusions
What are atoms? - ✔️✔️The basic units of matter
What are atoms made of? - ✔️✔️Made of protons, neutrons, and electrons
How do we define and recognize one type of atom from another? - ✔️✔️By looking at the number
of protons in the nucleus
How are atoms held together into molecules? - ✔️✔️They attach to other atoms to make a
covalent bond. If there are 4 attached atoms, it is a double bond. If there are 6 attached atoms, it is
a triple bond
Discuss the structure and function of the major types of large molecules found in living organisms. -
✔️✔️Van der Waals forces are a slight attraction that develops between oppositely charged regions
of nearby molecules. They aren't as strong as ionic and covalent bonds, but they hold molecules
together, especially the large ones
What are special properties of water? - ✔️✔️Water is a polar molecule and it is able to form
multiple hydrogen bonds
How do the properties of water benefit living organisms? - ✔️✔️Water is the best solvent on Earth.
It is able to dissolve both ionic compounds and other polar molecules
What are the two different types of cells found in living organisms? - ✔️✔️Prokaryotic and
eukaryotic cells
, How are prokaryotic and eukaryotic cells different? - ✔️✔️Prokaryotic cells don't have a nucleus
and eukaryotic cells have a nucleus, where they separate the genetic information from the rest of
the cell
Organelles - ✔️✔️Many of the structures in cells; called "little organs"
Cytoplasm - ✔️✔️The portion of the cell outside the nucleus
Vacuoles - ✔️✔️Store materials like water, salts, proteins, and carbohydrates
Lysosomes - ✔️✔️Break down lipids, carbohydrates, and proteins into small molecules that can be
used by the rest of the cell. They are also involved in breaking down organelles that have outlived
their usefulness
Cytoskeleton - ✔️✔️Helps the cell maintain its shape and is also involved in movement
Microfilaments - ✔️✔️Threadlike structures made up of a protein called actin
Microtubles - ✔️✔️A hollow structure made up of proteins known as tubulins
Centrioles - ✔️✔️Located near the nucleus and help organize cell division. Not found in plant cells
Ribosomes - ✔️✔️Small particles of RNA and protein found throughout the cytoplasm in all cells
Endoplasmic Reticulum - ✔️✔️Where lipid components of the cell membrane are assembled, along
with proteins and other material that are exported from the cell
Golgi Apparatus - ✔️✔️Modifies, sorts, and packages proteins and other material from the
endoplasmic reticulum for storage in the cell or release outside the cell
Cholorplasts - ✔️✔️Capture the energy from sunlight and convert it into food that contains
chemical energy in a process called photosynthesis