JLABS EXAM UPDATED ACTUAL Exam
Questions and CORRECT Answers
The diagram shows a simple food web of organisms on a forest floor. Which of these is most
dependent on the earthworm for its food supply? - CORRECT ANSWER - centipede
In this plant cell, which cellular structure is responsible for storing food, water, and wastes? -
CORRECT ANSWER - vacuole
In the scale model above, one centimeter is equal to one-half of a meter. The mailbox is two
truck lengths away from the model truck. How far away is the mailbox from the truck on the real
street? - CORRECT ANSWER - 10 Meters
Asexual reproduction involves only one parent. The offspring of this type of reproduction have -
- CORRECT ANSWER - DNA identical to the DNA of the parent
The picture shows the growth curve of a bacterial population. According to this information, the
bacterial population doubles every - - CORRECT ANSWER - 20 Minutes
This experiment was set up to test the hypothesis that plants grow faster in green light. What is
the independent variable in this experiment? - CORRECT ANSWER - color of light
The function of a cell nucleus is to - - CORRECT ANSWER - direct the activities of the
cell
What is the mass of the rock? - CORRECT ANSWER - 354.6 g
At which of these points is it 12:00 noon? - CORRECT ANSWER -4
, According to this diagram, both of these fish - - CORRECT ANSWER - get their energy
from other animals
A plant's green color is due to the presence of which organelle? - CORRECT ANSWER -
Chloroplast
Cells → Tissues → Organs → ? - CORRECT ANSWER - Systems
The force that holds the planets in orbit around the sun is called - - CORRECT ANSWER -
gravity
Which of the following classification groups contains organisms that have the most
characteristics in common? - CORRECT ANSWER - Species
After fishing in the ocean, a student left his fishing gear in the sun to dry. Later, he noticed that
small white crystals had formed on the rod, reel, and fishing line. Which of these is the best
explanation of what occurred? - CORRECT ANSWER - The water evaporated from the
fishing gear,
and salt from the ocean was left behind.
Which of these shows the correct sequence of development? - CORRECT ANSWER -
Cells → tissues → organs → systems
Black bears roam over large territories. What effect would building shopping centers in these
territories have on the bears? - CORRECT ANSWER - Reduce the black bears' habitat
White-footed mice having thicker fur than cactus mice is probably influenced most by the
differences in the - - CORRECT ANSWER - environmental climates where they live
Which of these is a way that a person can help improve air quality? - CORRECT
ANSWER - Carpool with several people
Questions and CORRECT Answers
The diagram shows a simple food web of organisms on a forest floor. Which of these is most
dependent on the earthworm for its food supply? - CORRECT ANSWER - centipede
In this plant cell, which cellular structure is responsible for storing food, water, and wastes? -
CORRECT ANSWER - vacuole
In the scale model above, one centimeter is equal to one-half of a meter. The mailbox is two
truck lengths away from the model truck. How far away is the mailbox from the truck on the real
street? - CORRECT ANSWER - 10 Meters
Asexual reproduction involves only one parent. The offspring of this type of reproduction have -
- CORRECT ANSWER - DNA identical to the DNA of the parent
The picture shows the growth curve of a bacterial population. According to this information, the
bacterial population doubles every - - CORRECT ANSWER - 20 Minutes
This experiment was set up to test the hypothesis that plants grow faster in green light. What is
the independent variable in this experiment? - CORRECT ANSWER - color of light
The function of a cell nucleus is to - - CORRECT ANSWER - direct the activities of the
cell
What is the mass of the rock? - CORRECT ANSWER - 354.6 g
At which of these points is it 12:00 noon? - CORRECT ANSWER -4
, According to this diagram, both of these fish - - CORRECT ANSWER - get their energy
from other animals
A plant's green color is due to the presence of which organelle? - CORRECT ANSWER -
Chloroplast
Cells → Tissues → Organs → ? - CORRECT ANSWER - Systems
The force that holds the planets in orbit around the sun is called - - CORRECT ANSWER -
gravity
Which of the following classification groups contains organisms that have the most
characteristics in common? - CORRECT ANSWER - Species
After fishing in the ocean, a student left his fishing gear in the sun to dry. Later, he noticed that
small white crystals had formed on the rod, reel, and fishing line. Which of these is the best
explanation of what occurred? - CORRECT ANSWER - The water evaporated from the
fishing gear,
and salt from the ocean was left behind.
Which of these shows the correct sequence of development? - CORRECT ANSWER -
Cells → tissues → organs → systems
Black bears roam over large territories. What effect would building shopping centers in these
territories have on the bears? - CORRECT ANSWER - Reduce the black bears' habitat
White-footed mice having thicker fur than cactus mice is probably influenced most by the
differences in the - - CORRECT ANSWER - environmental climates where they live
Which of these is a way that a person can help improve air quality? - CORRECT
ANSWER - Carpool with several people
