WorksheetsDMA 1 Review!
Total questions: 50
Worksheet time: 25mins
Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG
ATG TGA CAG
TAC ACT GTC
GTA AGT GAC
CAT TCA CTG
The enzyme that unwinds the DNA to prepare for replication
helicase
replicase
polymerase
synthase
Place the following in sequential order
1. Recoil
2. Unwind and straightens the double helix
3. Breaks Hydrogen bonds
4. Adds Free nucleotides
1,2,3,4
3,4,2,1
3,2,4,1
2,3,4,1
What will the first four bases of the new DNA strand look like if copying the template strand?
TGGT
ACCA
TGGT
CAAC
Why does DNA replicate?
To create another copy for the new cell
To create a duplicate copy in case the original gets damaged
To create a new copy to replace the damaged original
To combine together to have a longer DNA code
DNA replication results in
2 completely new DNA molecules
2 DNA molecules that each contain a strand of the original
1 new DNA molecule and 1 old
1 new molecule of DNA
A process in which DNA has the unique ability to make an exact copy of itself.
Replication
Translaton
Transcription
Substitution
order of replication
3,4,2,1
3,1,4,2
2,1,4,3
3,4,1,2
A DNA nucleotide contains all of the following, except...
Deoxyribose
Phosphate group
Nitrogenous base
Glycerol
What is the shape of DNA?
Double Helix
Triple Helix
Rod
Rectangle
If an organism contains 30% thymine, what percent of adenine will it contain?
40%
60%
30%
20%
Why are plant cells capable of making their own food but not animals cells? Because of the presence of the
mitochondria
chloroplast
cytoplasm
ribosomes
Controls what comes into and out of the cell; found in all cells
cell membrane
chloroplast
cell wall
nucleus
Gel-like fluid where the organelles are found
golgi body
chlorophyll
nucleus
cytoplasm
Control center of the cell; contains DNA
Mitochondria
Chloroplast
Nucleus
Lysosomes
Outer layer of a plant cell. Composed of cellulose.
Cell membrane
Cell wall
Cytoskeleton
Cytokinesis
Uses chemicals to break down food and worn out cell parts
lysosomes
ribosomes
Golgi bodies
Vesicles
Assembles amino acids to create proteins
mitochondria
ribosomes
Smooth E.R.
Vacuoles
Produces the energy a cell needs to carry out its functions.
Mitochondria
E.R.
Golgi body
Nucleolus
Stores food, water, wastes and other materials
Mitochondria
Cytoskeleton
Vacuole
Vesicle
Receives proteins and materials from the ER, packages them and distributes them
Golgi bodies
Nucleus
cell membrane
ribosomes
How can you tell that this is a prokaryote or eukaryote cell?
It is a prokaryote because it doesn't have a nucleus
It is a eukaryotic cell because it has a cell wall and a nucleus
It is eukaryotic because it does not have a nucleus nor a cell membrane
It is prokaryote because it has a cell wall
What is the difference between mitochondria and chloroplast?
Mitochondria produces energy and chloroplasts breaks down energy
There is no difference. They are the same.
Mitochondria breaks down energy from food and chloroplasts produce energy from sunlight.
Mitochondria contains DNA and chloroplasts are green
All of the following are found in plant cells EXCEPT:
Cell Wall
Chloroplast
Large Central Vacuole
Centrioles
You might think of me as the trash collector, but recycler is maybe more accurate. What am I?
Mitochondria
Lysosome
Vacuole
Cytoplasm
What do you call the tiny cell structures inside a cell that carry out a specific function within the cell?
Biological Macromolecules
Organelles
Cells
Atoms
What do you call the eukaryotic cells that do not have a cell wall and are only surrounded by a cell membrane?
Plant cells
Animal cells
bacterial cells
viral cells
Using this image, what organelle is C?
Cell Wall
Mitochondria
Chloroplast
Vacuole
Using this image, what is structure B?
Endoplasmic Reticulum
Nucleus
Golgi body
Vacuole
There are three parts to the cell theory. Which is NOT one of those parts?
All organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells spontaneously arise nonliving matter
All cells come from pre-existing cells.
Corneal transplants are usually performed using donor tissue. Researchers have discovered a technique that creates corneal tissue from a patient's own limbal stem cells. Which principle of the cell theory supports this research?
Cells come from pre-existing cells.
Cells are created during certain intervals
Cells that are damaged repair themselves.
. Cells are constantly being regenerated through cell division
The part of an experiment that doesn't change.
control group
constant variable
dependent variable
independent variable
The variable that is changed or manipulated by the scientist to test a hypothesis is called the _________________________ .
dependent variable
independent variable
control
constant
A scientist wants to test the effects of different concentrations of salt water on the growth of plants. What would be the independent variable of the experiment?
saltiness of the water
plant growth
Amount of sunlight
The type of plant
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
the size of the baby alligators
the gender of the baby alligators
the incubator
the temperature
The graph below shows the number of sunny days and rainy days in a city during four months.
Based on the graph, how many more sunny days than rainy days did this city have during the months of April, May, and June?
21
56
10
35
Large bodies of water can absorb and release huge amounts of energy with little fluctuation in temperature, contributing to their ability to moderate climate temperatures. How does heat capacity contribute to regulating global temperatures?
The high heat capacity of water regulates energy levels at the surface of the ocean, creating localized mixing with deeper water.
The high heat capacity of water prevents it from storing huge amounts of chemical potential energy in the form of ice at the polar caps.
The high heat capacity of water contributes to water’s ability to store energy, creating currents that transport this energy around the globe.
The high heat capacity of water reduces water’s ability to store energy, allow water from precipitation and runoff to easily migrate into ocean currents.
What word describes when water is attracted to other substances?
adhesion
cohesion
polarity
expansion when frozen
In 2017, an iceberg the size of Delaware split from Antarctica. As the iceberg drifts out into the ocean it will float. What property of water allows for the iceberg to float?
Water’s ability to dissolve a wide variety of substances.
Water’s ability to attract other polar molecules causing surface tension.
Water’s ability to absorb large amounts of energy, allowing for less fluctuation in temperature.
Water’s ability to be less dense as a solid than as a liquid, due to polarity and molecular structure.
In the human digestive system, the enzyme trypsin acts on proteins. The optimal temperature for the enzyme is approximately 40°C. Which of the following graphs show how the activity of the enzyme most likely relates to the temperature of the reaction environment.
A
B
C
D
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
Enzymes increase the energy of the reactants.
Enzymes decrease the energy level of the products.
Enzymes decrease the activation energy of the reaction.
direction
Enzymes are what type of macromolecule?
Nucleic acids
Proteins
Carbohydrates
Lipids
What happens if a large change in pH or temperature affects an enzyme?
The enzyme would adapt to work at almost the same speed
The enzyme could denature and stop working
The enzyme would work faster to escape the bad environment
The enzyme would be unaffected
What conclusion can be drawn about the cells from the table above?
Cell 1 is from a plant; Cell 2 is from an animal
Cell 1 is prokaryotic: Cell 2 is from an animal
Cell 1 is prokaryotic; Cell 2 is from a plant
Cell 1 is eukaryotic: Cell 2 is prokaryotic
The diffusion of water through a selectively permeable membrane is called osmosis. Which description represents the effects of osmosis on a plant cell when the concentration of sugar particles is greater outside the cell than inside?
Water diffuses into the cell, and the cell swells.
Water diffuses out of the cell, and the cell shrinks.
Water moves into and out of the ell at equal rates, and cell size remains the same.
Water is blocked from moving into or out of the cell, and cell size remains the same.
What is NOT TRUE about the cell membrane
It controls what enters and leaves the cell
It is semi-permeable
It is composed of a phospholipid bilayer
It contains digestive enzymes
In passive transport, molecules move from an area of __________ concentration to an area of __________ concentraiton
High, Low
Low, High
Active, Passive
Mid, Equal
Which of the following is not a type of passive transport?
Osmosis
Diffusion
Endocytosis
Facilitated Diffusion
What type of transport is this?
Diffusion
Osmosis
Facilitated diffusion
ctive transport
A cell that contains a 10% salt solution was placed in a beaker that contains a 30% salt solution (as shown in the picture).
What would happen over time?
Water would diffuse out of the cell, and the cell would shrink
Water would diffuse inside the cell, and the cell would swell up
Salt would diffuse out the cell, and the cell would shrink
Salt would diffuse into the cell, and the cell would swell up
