PRETEST_Science_GRADE 7
Quiz by Angelica Bayron
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- Q1
Which of the following BEST describes the function of a microscope?
It is an optical instrument that can magnify the image of atoms and cells.
It is a tool that scientists use in conducting experiments.
It is an instrument that can enlarge the cell.
It is a laboratory instrument used in studying the specimens of living things.
60sS7LT-IIa-1 - Q2
Who was the scientist who examined bacteria, blood cells, yeasts, and protozoans using the microscope that he invented?
Galileo Galilei
Robert Hooke
Zacharias Janssen
Anton van Leeuwenhoek
60sS7LT-IIa-1 - Q3
Which part of the microscope should be manipulated if the Low Power (LPO) needs to be adjusted?
Light source
Eyepiece
Coarse adjustment knob
Stage
60sS7LT-IIa-1 - Q4
What is the function of a light source in the compound light microscope?
It enlarges the size of the specimen.
It provides illumination to the specimen.
It makes the image of the specimen visible.
It magnifies the image of the specimen.
60sS7LT-IIa-1 - Q5
Which of the following statement is the correct way of preparing a specimen?
Cover the specimen quickly using a coverslip.
Avoid the contamination ofthe specimen by covering it with a cover slip.
Position the coverslip at an angle to the slide before covering the entire specimen.
Lift the coverslip before covering the specimen.
60sS7LT-IIb-2 - Q6
Which part of the microscope contains a magnifying lens where you look through to observe the specimen?
C
A
B
D
60sS7LT-IIa-1 - Q7
Which part will you adjust while viewing under HPO if the cut-out small letter “e” you are observing is not clear?
B
C
D
A
60sS7LT-IIb-2 - Q8
If a microscope has a 4x ocular lens and a 10x objective, what is the total magnification of theobject being viewed?
400x
14x
40x
4x
60sS7LT-IIb-2 - Q9
Which of the following shows the letter “e” as seen under the microscope?
60sS7LT-IIb-2 - Q10
Why is it necessary for the specimen to be thinly sliced so it can be observed under the microscope?
The high magnification objective can be used.
The light could pass through the specimen.
The image would be bigger.
The image will be clearer.
60sS7LT-IIb-2 - Q11
Which sequence of biological levels of organization is correctly arranged from most complex to simplest?
organism-> organ->organ system-> tissue->cell
organism->organ system ->organ->tissue->cell
cell->tissue->organ->organ system->organism
cell->organ->organ system->tissue->organism
60sS7LT-IIc-3 - Q12
Which level of organization in an organism is the basic unit of life?
organ
organ system
cell
tissue
60sS7LT-IIc-3 - Q13
An organ system of a complex form of organism is made up of different organs that perform a specific function. Which of the following organs DOES NOT match its function?
Heart Circulation
Muscle: Support
Kidney: Excretion
Lung: Respiration
60sS7LT-IIc-3 - Q14
Which of the following statements correctly describe the organ system of plants?
Plants have a nervous system that coordinates the functions of other organs.
A plant’s shoot system is made up of flower, leaf, and stem.
Plants and animals have the same set of organ systems.
Plants have flowers that reproduce asexually.
60sS7LT-IIc-3 - Q15
Which of the following examples describes a population?
Eight dogs and two cats roaming in one of the Barangays in Marikina.
Six birds spotted this morning nesting on different trees at the Marikina River Park.
Five Carabaos seen in Marikina City in 2019.
Five varieties of plants in a rectangular pot were sold yesterday in Imelda's Garden located in Marikina.
60sS7LT-IIc-3
