Lab Safety (1)
What should you do before conducting a lab activity?
a. Start the experiment immediately
b. Read all lab and safety operating procedures
c. Ask a classmate what to do
d. Skip the instructions
b. Read all lab and safety operating procedures
What should you do if your safety goggles are damaged or don't fit properly?
a. Continue working without them
b. Borrow a pair from a classmate
c. Notify the teacher immediately
d. Try to fix them yourself
c. Notify the teacher immediately
What is the primary function of the cell membrane?
a. To provide energy to the cell
b. To control what enters and leaves the cell
c. To store genetic information
d. To produce proteins
b. To control what enters and leaves the cell
Which of the following is a biotic factor in an ecosystem?
a. Water
b. Soil
c. Plants
d. Temperature
c. Plants
What is the role of DNA in living organisms?
a. To provide energy
b. To store and transmit genetic information
c. To facilitate chemical reactions
d. To protect against infections
b. To store and transmit genetic information
Where should backpacks and books be kept during lab work?
a. On the lab table
b. In an area designated by the instructor
c. On the floor next to you
d. Anywhere you like
b. In an area designated by the instructor
When is it appropriate to remove your laboratory apron during an activity?
a. Whenever you feel like it
b. Only when the instructor notes it is safe to do so
c. As soon as you finish your experiment
d. When you leave the lab
b. Only when the instructor notes it is safe to do so
What is a characteristic of prokaryotic cells?
a. They have a nucleus
b. They are always multicellular
c. They lack membrane-bound organelles
d. They reproduce sexually
c. They lack membrane-bound organelles
What type of organism is primarily responsible for decomposing organic matter?
a. Herbivores
b. Carnivores
c. Detritivores
d. Producers
c. Detritivores
Which of the following best describes natural selection?
a. A process where individuals with favorable traits reproduce more successfully
b. A method of human-driven breeding
c. The random change in gene frequencies within a population
d. The migration of organisms from one habitat to another
a. A process where individuals with favorable traits reproduce more successfully
What type of shoes should you wear during lab activities?
a. Sandals
b. Open-toe shoes
c. Closed-toe shoes
d. No shoes
c. Closed-toe shoes
What type of gloves should be used for hand protection during lab activities?
a. Latex gloves
b. Wool gloves
c. Non-latex gloves appropriate for the hazard
d. Any gloves you have at home
c. Non-latex gloves appropriate for the hazard
What is the function of ribosomes in a cell?
a. To synthesize lipids
b. To produce energy
c. To assemble proteins
d. To replicate DNA
c. To assemble proteins
What is the role of the ecosystem’s producers?
a. To consume other organisms
b. To decompose organic matter
c. To generate energy through photosynthesis
d. To regulate population sizes
c. To generate energy through photosynthesis
In genetics, what does homozygous mean?
a. Having two different alleles for a trait
b. Having two identical alleles for a trait
c. Having one allele for a trait
d. Having multiple alleles for a trait
b. Having two identical alleles for a trait
How should you check for the odor of a chemical?
a. Smell it directly
b. Taste a small amount
c. Waft by sweeping your hand over the container
d. Ask a classmate to smell it
c. Waft by sweeping your hand over the container
How should you dispose of broken glass in the laboratory?
a. In the regular trash can
b. In a designated broken glass container
c. In the sink
d. Take it home and dispose of it there
b. In a designated broken glass container
Which of the following processes occurs in the mitochondria?
a. Photosynthesis
b. Cellular respiration
c. Protein Synthesis
d. DNA Replication
b. Cellular respiration
Which of the following about ecosystems is true?
a. Ecosystems only consist of living organisms
b. Energy flow in ecosystems is one-way
c. ecosystems are the same
d. Decomposers are not essential
b. Energy flow in ecosystems is one-way
Which of the following processes contributes to genetic variation?
a. Mitosis
b. Binary fission
c. Meiosis
d. Cloning
c. Meiosis
What should you do with unused chemicals?
a. Return them to the reagent container
b. Pour them down the sink
c. Take them home
d. Follow the instructor's directions for disposal
d. Follow the instructor's directions for disposal
What should you do in the event of a fire drill during a lab activity?
a. Continue your experiment
b. Hide under the lab table
c. Turn off all gas burners and electrical equipment
d. Take your experiment with you as you evacuate
c. Turn off all gas burners and electrical equipment
What is the main purpose of the chlorophyll in plants?
a. To absorb water
b. To capture light energy
c. To transport nutrients
d. To release oxygen
b. To capture light energy
What is the primary source of energy for life on Earth?
a. Wind
b. Solar
c. Geothermal energy
d. Nuclear energy
b. Solar
What is meant by “survival of the fittest”?
a. Only the strongest individuals survive
b. The individuals best adapted to their environment will survive and reproduce
c. All individuals have an equal chance of survival
d. The largest animals will always dominate the ecosystem
b. The individuals best adapted to their environment will survive and reproduce