WorksheetsScience Core Pre-test
Total questions: 40
Worksheet time: 20mins
Which best describes a food web?
A single chain of consumers and producers
A system of interconnected food chains
A group of carnivores hunting together
A cycle showing weather patterns
What is a primary consumer in a food web?
An herbivore
A decomposer
A plant
A top predator
What role do decomposers play in a food web?
Store energy
Capture sunlight
Hunt for food
Break down dead matter
Which of the following is abiotic?
Fungi
Rocks
Bacteria
Insects
When one species relies on another for food, this is an example of:
Commensalism
Mutualism
Interdependence
Parasitism
A trait is:
A behavior
A learned skill
A tool used for science
A physical characteristic passed down
Traits are passed from:
Friends to friends
Parents to offspring
Teachers to students
Pets to humans
A dominant allele will:
Be weaker than the recessive
Mask the recessive allele
Only show with another dominant
Always be hidden
Eye color, hair type, and height are examples of:
Behaviors
Diseases
Traits
Skills
Which tool helps show how traits are passed?
Thermometer
Punnett Square
Microscope
Food Chain
DNA is located in:
Ribosome
Cytoplasm
Nucleus
Cell wall
Genes are made of:
Water
DNA
Sugars
Proteins
Chromosomes are:
Bundled DNA
Floating organelles
Muscle tissues
Food molecules
Humans have how many chromosomes?
23 total
92 total
46 total
100 total
A mutation in DNA can result in:
No change
A harmful change
A helpful change
All of the above
A recessive trait appears only when:
It's passed from the mother only
One recessive allele is present
Two recessive alleles are present
Two dominant alleles are present
What is genotype?
Genetic makeup
Lifestyle habits
Environmental effects
Physical appearance
Heterozygous means:
No alleles
Two different alleles
All dominant alleles
Two identical alleles
If “T” = tall and “t” = short, what is the genotype of a short plant?
tt
TT
Tt
tT
Which is an inherited trait?
Riding a bike
Favorite food
Handwriting style
Eye color
The process where cells divide is called:
Respiration
Photosynthesis
Mitosis
Digestion
What causes Down syndrome?
Extra chromosome 21
Too little sleep
A virus
One missing chromosome
How many daughter cells are made in mitosis?
1
3
2
4
Genetic disorders are caused by:
Exercise habits
Faulty genes
Sunlight exposure
Balanced diets
Mitosis results in:
One half-sized cell
Four different cells
Muscle growth only
Two identical cells
GMO stands for:
Growing Microbe Options
General Microbe Operations
Genetically Modified Organism
Genome Molecule Output
Biodiversity means:
Variety of life in an ecosystem
Studying rocks
Farming the same crop
Destroying habitats
Which is an example of a GMO?
Organic carrot
Chicken from a farm
Apple from a tree
Pest-resistant corn
Biodiversity is important because it:
Destroys competition
Increases disease
Reduces food
Provides stability
A risk of using GMOs may include:
More food choices
Reduced crop yield
Allergies or ecosystem imbalance
Increased soil health
Polymers are made of:
Metals
Rocks
Acids only
Repeating units
Ceramics are usually:
Brittle and heat-resistant
Magnetic
Flexible and soft
Metal-based
An example of a polymer is:
Salt
Plastic
Glass
Copper
Composites are:
Rare gases
Single-element materials
Pure substances
Combinations of materials
What is a use of ceramics?
Gasoline
Wires
Cooking pots
Paper
Which of these is a chemical reaction?
Melting ice
Boiling water
Breaking glass
Rusting iron
What is a reactant in a chemical reaction?
The material you start with
The end result
A catalyst
A lab tool
Which shows energy release in a reaction?
Color remains unchanged
Light or heat is produced
Reaction gets colder
Nothing happens
A balanced chemical equation:
Has no products
Is always endothermic
Has equal mass on both sides
Needs no symbols
Which is a chemical reaction seen daily?
Drawing on paper
Toasting bread
Freezing water
Tearing paper
