Passive transport is called “passive” because it occurs WITHOUT
C. a concentration gradient.
D. a cell wall.
This subatomic particle of an atom has NO charge.
A process for removing large quantities toxins and waste from the cell is
D. endoplasmic reticulum
What type of bond is formed when atoms share electrons?
Osmosis is the diffusion of _____ across a membrane
What is unique about carbon and its bonding ability?
A. It can bond with any element because it has 1 valence electron
B. It can only bond with other carbon atoms
C. It can form up to four different bonds because it has 4 valence electrons
D. It can break down bonds in other molecules
Which of the following, found ONLY in plant cells, provides structure?
A. cell wall
What do vacuoles do?
A. They give the cells their shape.
B. They protect the cell.
C. They are the brain of the cell.
D. They are used for storage.
_____________ allows some things to enter and leave cells, while keeping other things out of the cell.
A. Nucleus control center of the cell
B. Selectively Permeable golgi apparatus
C. A selectively permeable membrane
D. Non Permeable membrane
The jelly-like fluid that surrounds the organelles in the plant and animal cells is called what?
D. cell wall
How many hydrogen atoms are there in a water molecule?
Two or more atoms chemically bonded together are called a
This type of lipid is solid at room temperature and found in animal sources.
C. saturated fats
D. unsaturated fats
Identify the structure that is indicated by the arrow in the image.
A. cell wall
Which subatomic part of an atom gives it a positive charge?
What is the name of the reaction that builds polymers from monomers?
C. organic synthesis
D. dehydration synthesis
Which region of an atom has a negative charge?
A. The nucleus
B. Both nucleus and electron cloud
C. The neutrons
D. The electron cloud
What is the name of the reaction that breaks apart a polymer into monomers?
A. dehydration synthesis
B. condensation reaction
Elements are made of
A. many types of atoms
B. the periodic table
C. one type of atom
Macromolecules are often POLYMERS. What are polymers?
A. Really large molecules made from smaller molecules
B. Small building blocks
C. Inorganic materials
D. Large molecules made from oxygen
What are organic molecules?
A. Molecules based on oxygen
B. Molecules based on carbon
C. Molecules that are made in laboratories
D. Molecules that organisms cannot make on their own
The nucleus of an atom is made up of ___________________.
A. Protons and Neutrino
B. Neutrons and Electrons
C. Protons and Neutrons
D. Protons and Electrons
I am the outer most layer of an animal cell. What am I?
A. cell wall
C. cell membrane
D. cell skin
All living things are made up of…
B. cell tissues
D. organ systems
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