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Grade 7 Review Questions from Mock Exam
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Who coined the term "cells"?
Robert Hooke
What type of asexual reproduction do bacteria exhibit?
binary fission
Which property of light creates rainbow?
Dispersion
What do you call microorganism that can cause diseases?
pathogen
Which cell structure is involved in building protein?
Ribosome
TRUE or FALSE. Bacteria have nucleus.
FALSE. Bacteria are prokaryotic cells. They have no nucleus.
The microorganism the causes typhoid fever is an example of a _________.
bacteria
What do you call a microorganism with round shape and in chains?
Steptococci
What does LOW FREQUENCY indicate about the sound?
low pitch
Which electromagnetic wave can kill cancer cells?
gamma
What color appears when an object ABSORBS all visible light?
black
What color appears when an object REFLECTS all visible light?
White
TRUE or FALSE. According to cell theory, living things arise spontaneously from non-living things.
FALSE
In which medium do sound waves travel fastest, and why?
Solid because particles in solid are more packed together.
Sound travels as what type of wave?
Longitudinal
What is the auditory range for humans? Give the range of acoustic sounds in Hertz.
20 to 20,000 Hertz
What do you call the union or joining of egg and sperm cells?
fertilization
Which microorganisms released oxygen on Earth billions of years ago?
Cyanobacteria
Name two cell structures that are found in PLANT cells but NOT in animal cells?
Cell wall, chloroplast
What is the level of organization in living things from MOST complex to simplest?
Organ system -> Organ -> Tissue -> Cell
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