H Flashcards
What is the basic unit of life?
Cell
Cell
True or False: All living organisms are made up of cells.
True
True
What structure controls the activities of a cell?
Nucleus
Fill in the blank: The gel-like substance inside the cell is called _____.
cytoplasm
What are the two main types of cells?
Plant and animal
Which part of the cell is responsible for energy production?
Mitochondria
What is the function of the cell membrane?
To protect and regulate what enters and exits the cell
Multiple Choice: Which of the following is NOT a part of a plant cell? A) Cell wall B) Chloroplast C) Ribosome D) Centriole
D) Centriole
True or False: All cells have a nucleus.
False
What is the smallest particle of an element?
Atom
Fill in the blank: Atoms combine to form ___ which make up all matter.
molecules
What are the three states of matter?
Solid, liquid, gas
What is the force that attracts two objects toward each other?
Gravity
Multiple Choice: Which force is responsible for holding atoms together? A) Electromagnetic B) Gravitational C) Nuclear D) All of the above
D) All of the above
What term describes the movement of particles from an area of higher concentration to an area of lower concentration?
Diffusion
Fill in the blank: The force that opposes motion between two surfaces is called _____.
friction
What is the term for the energy of motion?
Kinetic energy
True or False: Potential energy is the energy stored in an object due to its position.
True
What is the process by which plants make their own food?
Photosynthesis
Multiple Choice: Which particle has a positive charge? A) Electron B) Proton C) Neutron D) None of the above
B) Proton
What do we call the force that acts at a distance without physical contact?
Field force
Fill in the blank: The _____ is the central part of an atom.
nucleus
What is the primary function of ribosomes in a cell?
Protein synthesis
True or False: Electrons are found in the nucleus of an atom.
False
What is the name of the process by which cells divide?
Mitosis
Multiple Choice: Which of the following is NOT a force? A) Tension B) Compression C) Speed D) Friction
C) Speed
