EOCT Review: Question Preview (ID: 11743)

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Which of the following organisms is used to help in the production of bread?
a) mold
b) lichen
c) yeast
d) bacterium

Which occurrence is a major source of the gases that can produce acid rain?
a) a hole in the ozone layer
b) emmisions by nuclear reactors
c) cloud-seeding by airplanes
d) burning of fossil fuels

Which of the following is the smallest unit as shown on the metric ruler below?
a) centimeter
b) hectometer
c) millimeter
d) kilometer

What is the process of maintaining a constant internal environment?
a) diffusion
b) respiration
c) homeostasis
d) evolution

How many chromosomes are contained in a human male gamete cell?
a) 11
b) 46
c) 34
d) 23

Which of the following is an abiotic factor in an ecosystem?
a) grass
b) a worm
c) a rock
d) a fox

In a scientific experiment, how many independent variable should be tested at the same tim/
a) none
b) three or more
c) two
d) one

Which of these is a beneficial effect of monerans?
a) the break down of cellulose
b) conjugation as a means of sexual reproduction
c) production of billions of offspring per day
d) survival in hot, acidic environments

Of the following which is considered a living organism?
a) bacterium
b) mitichondrion
c) nucleus
d) sperm

Which chamber of the heart pumps blood to the lungs
a) left atrium
b) left ventricle
c) right atrium
d) right ventricle

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