2nd PT Science 7 Reviewer

Which of the following parts helps you view the specimen as it allows you to look through the magnified image?

• base

• eyepiece

• illuminator

• objective lenses

What is the main function of a microscope?

• to magnify small objects

• to produce light during experiments

• to measure size of objects

• to store laboratory equipment

Which of the following is the best practice for properly handling a microscope?

• Always carry the microscope by holding the eyepiece to avoid damage.

• Before using, clean the lenses with any available cloth to remove dust.

• Place the microscope directly on the edge of the table to save space.

• When transporting, hold the microscope by the arm and base, keeping it upright.

Which of these matches is INCORRECT?

• illuminating part - diaphragm

• magnifying part - objective lenses

• mechanical parts - arm

• movement part - revolving nosepiece

Which of the following organelles is found in animal cells but not in plant cells?

• centrioles

• mitochondria

• nucleus

• ribosome

Which of these describes the function of a cell membrane?

• to store genetic information

• to produce energy for the cell

• to provide structural support and protection

• to control movement of substances in and out of the cell

Which of the following captures the energy from the sun and contains chlorophyll pigment that made most plants green in color?

• chloroplast

• mitochondrion

• nucleus

• ribosome

Why do plants usually look fresh after rainfall or mornings?

• the nucleus is functioning well

• the rain made the cell wall strong

• the vacuoles are full of water

• the chloroplast slow down photosynthesis

ALL are examples of multicellular organism EXCEPT ONE.

• bacteria

• baby

• piglet

• tree

What enables multicellular organisms to have longer lifespans than most unicellular organisms?

• ability to hibernate

• ability to reproduce sexually

• specialized cells

• capacity to replace or repair damaged cells