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WorksheetsMCA Prep
Total questions: 50
Worksheet time: 25mins
Which statement best describes science?
It is mostly and American activity
It is practiced only in the Western World
People of all cultures do science People of all cultures do science
A company is building a dam. Why might it be difficult to trust engineers who are building it?
They might not have legitimate degrees
They might benefit if the project is approved
They might not like dams
They might be foreigners They might be foreigners
Reading peer journals is part of science. What could you find if you read them?
Computer modeling
Observations
Analysis of heart rates
Graphs of population growth Graphs of population growth
All of these
For data to be reliable it must be unbiased. To maintain unbiased data as possible scientists:
Publish only positive results
Control variables
Use participants from a select population
Use only researchers invested in the outcome Use only researchers invested in the outcome
Carbohydrates are:
Energy source
Storage
Osmosis
Energy Source and Storage
All of these
Where is DNA found in the eukaryotic cell?
Mitochondria
Cytoplasm
Nucleus
Ribosomes
Eukaryotes do not have DNA
Compare and animal and bacterial cell, which statement is true?
DNA is circular in the animal cell.
DNA is single stranded in the animal cell.
DNA is contained in the nucleus of the animal cell.
DNA requires different nucleotides in an animal cell.
Which of these pathogens has a nucleus?
Bacteria
Virus
Fungi
When bacteria is put into pure water, water rushes into the cell and bursts due to...
Diffusion through active transport
Diffusion through passive transport
Osmosis through active transport
Osmosis through passive transport
In which organelle is glucose broken down?
Mitochondria
Chloroplast
Ribosome
Nucleus Nucleus
Enzymes are assembled in this organelle
Mitochondria
Chloroplast
Ribosome
Nuclues
In which process do plants release energy for growth and development?
Cellular Respiration
DNA Replication
Protein Synthesis
Photosynthesis
What cell parts converts light energy to chemical energy?
Nucleus
Ribosomes
Chloroplast
Vacuoles
What would limit the amount of reactants for photosynthesis?
Using a different fertilizer
Changing soil types
Putting plant in an airtight container
Placing the plant outside
Crossing over in meiosis results in variation because...
There are fewer alleles
There are new chromosomes
There are more chromosomes
There are different allele combinations
What is an advantage of sexual reproduction?
Increased genetic variation
No mate required
Faster reproduction
More mutation
Some types of algae consume oil. Why do some algae consume more oil than others?
Different types of algae are more common.
Some algae have mutations that change what they can do.
Algae reproduce quickly.
Genetic engineering depends on the principles of...
Anatomy
Ecology
Molecular Genetics
Two heterozygous parents cross. What % of offspring will also be heterozygous?
25%
50%
75%
100%
Which of the following is a recessive genotype?
Tt
TT
tt
None of these
A DNA sequence is ATCCCGTG, what will the complementary DNA strand be?
ATCCCGTG
ATGGGCTC
TAGGGCAC
A segment of DNA that codes for a trait is called...
Genome
Allele
Trait
Gene
What is the function of enzymes?
Catalyst for chemical reactions
Structure of cells
Energy storage
Pepsin is an enzyme in the body. What characteristics does it share with other enzymes?
It is a protein
Found in humans only
Not often used in the body
Organisms with certain traits are more likely to survive and pass on these traits to their kids
Transcription
Translation
Natural Selection
Mitosis
Nucleotide sequences from a living brown bear and the extinct cave bears are nearly the same. What can you infer?
The bear evolved from the cave bear
They had common ancestors
The cave bear evolved from the brown bear
What leads to new species? (Speciation)
A large amount of variation in a population
Little to no change in an ecosystem
A large amount of variation in an individual
New tree species develop over long periods of time. Which factor DOES NOT promote new species?
Cloning
Genetic Variation
Different Selective Processes
Isolation of population
Fertilizers used by farmers today will be less desirable in the future, why?
A decrease in effectivness
A decrease in cost
A decrease in time used to produce it
A decrease in the number of times it is applied
The following is a graph of Prairie Dog population over time. What is the carrying capacity?
.5 million
1.0 milion
1.5 million
2.0 million
What are some reasons an engineer would need to redesign something?
The original design is not cost effective
The original design doesn't function as planned
The original design has too many dangerous risks
All of these
The following picture is a prototype of an electric car, why is a prototype used by engineers?
To make it look good
To use the car in advance
To test quality, efficiency, and productivity of the product
To allow customers to see it
Sensory input from the nervous system comes from the:
Eye
Heart
Lung
Liver
Which chemicals in wheat can cause allergic reactions in humans?
Antibodies
Antigens
Antihistamines
Autoimmunities
What testing can be done to see if a person will develop a certain disease?
Genetic
Hearing
Vaccination
EKG
The plague is caused by bacteria and effects humans. Which statement is true?
People don't get sick from bacteria
We can treat bacterial infections with antibiotics
Scientists are able to cure all bacterial diseases
Most species of bacteria are now considered dangerous Most species of bacteria are now considered dangerous
An engineer needs to build an earthquake proof home, what are some possible constraints?
How much materials cost
His knowledge about earthquakes
Available technology
All of these
Air quality affects which human body system?
Nervous
Respiratory
Muscular
Digestive
What is the expected result when mitosis is complete?
Genetically identical cells with half the chromosomes of the parent cell.
Genetically different cells with half the chromosomes of the parent cell.
Genetically identical cells with the same number of chromosomes as the parent.
Genetically different cells with the same number of chromosomes as the parent.
Which of these best shows how the information flower-color genes leads to flower color?
DNA -> RNA-> Protein
RNA -> DNA -> Protein
DNA -> Protein -> RNA
Protein -> RNA -> DNA
A heterozygous parent and a homozygous recessive parent have offspring. Which question about the offspring is NOT answered by Mendel's laws?
What is the probability that an individual offspring will be heterozygous?
What will be the phenotype of any individual offspring?
Approximately what fraction of a large number of offspring will display the dominant trait?
Approximately what fraction of a large number of offspring will display the recessive trait?
What cell material is replicated before bean plant cells divide?
DNA
RNA
Fatty Acids
Amino Acids
Why is genetic variation important to bears?
Allows the bear population to adapt
Allows for larger bears
Allows for bears to grow bigger
Allows for bears to be more adorable
Darwin was one of the first to come up with the modern theory of evolution. Scientist find new information all the time as our technology improves. This new information leads to:
changes in the fossil record
Making relationship diagrams (trees) more accurate
the firing of scientists who agree with Darwin
Wood frogs go back to the ponds where they were conceived to lay their eggs. Which human activity would most harm the wood frog?
draining the pond
hiking in the forest around the pond
driving on a road near the pond
making a bike trail through the woods
What statement supports scientists claim that greenhouse gases have been on the increase in the last century?
Natural processes released greenhouse gases into the air
Human production of greenhouse gas has steadily risen
Greenhouse gases are allowing heat to escape earth
Greenhouse gases prevent rays from the sun from reaching Earth
Migratory birds go to Canada and use the Mississippi as a route to get there. This results in...
increased competition for food
increase in migratory fish
increased competition for nesting sites
increase in number of non-migratory birds
When restoring a watershed, things that could prevent the restoration are...
Success of restorations in neighboring watersheds
Good weather
Expenses
Which cell function is prevented by the rigid cell wall of a plant cell?
cell division
protein synthesis
exchange of chemicals
transport through a vesicle
Which of the following is the MONOMER of nucleic acids?
Glucose
Fatty Acid
Nucleotide
Lysine
