WorksheetsBiology Review 1
Total questions: 65
Worksheet time: 2hrs 44mins
A pet goldfish needs fish food.
Which characteristic of life does this refer to?
Living things need energy
Living things are composed of one or more cells
Living things respond to their environment
Living things grow and reproduce
Living things maintain a stable internal environment
Streptococcus, a round cell, is the bacteria that causes strep throat.
Which characteristic of life does this refer to?
Living things need energy
Living things are composed of one or more cells
Living things respond to their environment
Living things grow and reproduce
Living things maintain a stable internal environment
Cells in your body divide to create new cells.
Which characteristic of life does this refer to?
Living things need energy
Living things are composed of one or more cells
Living things respond to their environment
Living things grow and reproduce
Living things maintain a stable internal environment
Shivering when your cold generate heat to warm your body.
Which characteristic of life does this refer to?
Living things need energy
Living things are composed of one or more cells
Living things respond to their environment
Living things grow and reproduce
Living things maintain a stable internal environment
Look at the image carefully.
Is the object living or non-living?
Living
Non-living
A viruses are considered
Living
Non-living
Viruses require a host cell to
Breathe and eat
Replicate
Move and sleep
Make protein and carbohydrates
What is a host?
An organism that eats another organism
An organism or a cell that the virus needs to reproduce in
Something that causes harm to the cell
The person that greats you at a resturant
All viruses are different, but what are two parts that a virus must have?
Genetic Information (DNA or RNA)
a lipid membrane
a nucleus
a protein coat
Which statement is true?
A virus has a nucleus, but no other organelles.
A virus has a nucleus and ribosomes.
A virus has no organelles, because it has no cells, and it is non-living.
Which of the following elements are found in all macromolecules? (Select all that apply).
Which macromolecule is used as our main source of energy?
Lipids/Fats
Nucleic Acids
Proteins
Carbohydrates
Which macromolecule stores energy?
Carbohydrates
Proteins
Lipids/Fats
Nucleic Acids
Nucleic acids make up which of the two molecules listed below?
FDA
RNA
DNA
FDR
This is one job proteins do not have in the body.
structure for tissues and organs
transport things through cell membranes
speed up chemical reactions
insulation
___ are the elements and compounds that are created by a reaction.
Products
Reactants
Molecules
Ingredients
The energy needed to start a reaction is called the
activation energy
starting energy
promoting energy
reacting energy
Enzymes contain a(n) ___ where reactants can bond to react with each other.
active site
reaction site
substrate site
enzyme site
At the end of this reaction, has energy been released or absorbed?
Absorbed
Released
There is not enough information to tell.
There is not change in the amount of energy in the system.
The organelle that is the control center of the cell and contains nearly all of the cell’s DNA:
Ribosome
Centriole
Nucleus
Rough Endoplasmic Reticulum
The organelle that assembles proteins in the cytoplasm:
Ribosome
Nucleus
Mitochondrion
Rough Endoplasmic Reticulum
The organelle that modifies, sorts, and packages proteins and other materials from the ER for storage in the cell or release from the cell:
Endoplasmic Reticulum
Golgi Apparatus
Vacuoles and Vesicles
Ribosome
The organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell:
Lysosome
Cytoskeleton
Golgi Apparatus
Chloroplast
The organelle that captures the energy from sunlight and converts it into chemical energy stored in food during photosynthesis:
Chloroplast
Mitochondrion
Cell Wall
Nucleus
The organelle that converts the chemical energy stored in food molecules into compounds that are more convenient for the cell to use:
Cell Wall
Cell Membrane
Mitochondrion
Centrioles
The organelle that regulates materials entering and leaving the cell, as well as supporting and protecting it:
Cell Wall
Cell Membrane
Centrioles
Cytoskeleton
What is the definition of OSMOSIS?
Diffusion of water through a selectively permeable membrane
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane against the concentration gradient
Movement of molecules across the cell membrane from an area of high concentration to low concentration
What is the definition of LIPID BILAYER?
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane against the concentration gradient
Diffusion of water through a selectively permeable membrane
Movement of molecules across the cell membrane from an area of high concentration to low concentration
What is the definition of ACTIVE TRANSPORT?
Movement of molecules across the cell membrane against the concentration gradient
Diffusion of water through a selectively permeable membrane
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Movement of molecules across the cell membrane from an area of high concentration to low concentration
Identify the following structure
Phospholipid
Cell
Cell membrane
Protein
What is the name of 'A' found on the structure below
Lipid Bilayer (cell membrane)
Protein
Phosphate hydrophilic heads
Lipid hydrophobic tails
What is the name of 'C' found on the structure below
Phosphate hydrophilic heads
Lipid hydrophobic tails
Lipid bilayer
protein
What is the name of 'D' found on the structure below
Lipid hydrophobic tails
Protein
Lipid bi layer
Phosphate hydrophilic heads
Why would the cell need energy to move molecules across the membrane?
the molecule is going against the concentration gradient
the molecule is to large to pass through the membrane
the lipid membrane requires energy anytime something is moving across the membrane
In passive diffusion, substances always move...
from an area of higher concentration to an area of lower concentration
from an area with more of the molecules to an area with fewer of the molecules
from an area of lower concentration to an area of higher concentration
from an area with fewer of the molecules to an area with more of the molecules
What is the definition of FACILITATED DIFFUSION?
Movement of molecules across the cell membrane from an area of high concentration to low concentration
Diffusion of water through a selectively permeable membrane
Movement of molecules across the cell membrane against the concentration gradient
Molecular structure that surrounds the cell and controls what enters and leaves the cell
Which image best represents facilitated diffusion?
Which is NOT true about this image?
It illustrates active transport.
It shows a substance moving against the concentration gradient.
The movement of the substance shown requires energy.
It illustrates facilitated diffusion.
Which of the types of transport are passive?
A only.
A and B only.
B and C only.
C only.
All the gummy bears in our lab got bigger. This is because they were all in _____ solutions.
hypotonic
hypertonic
isotonic
tonic water
Why has water moved into the cell in the hypotonic solution?
The cell was deflated and needed to be inflated.
The concentration of solvent was higher inside than outside the cell.
The concentration of solute (salt) was higher outside the cell than inside.
The concentration of solute (salt) was higher inside the cell than outside.
Transport of water molecules across a cell membrane allows cells to maintain stable internal conditions in an ever-changing environment. This stable internal condition is called _____.
homeostasis
energy transfer
osmosis
carrying capacity
