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Cards (101)
What is the equation for photosynthesis?
Carbon dioxide
+ Water →
Glucose
+ Oxygen
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What is the role of chlorophyll in photosynthesis?
It absorbs
light energy
for the reaction
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What is the independent variable in the experiment on light intensity's effect on photosynthesis?
Distance from light source
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What is the dependent variable in the photosynthesis experiment?
The number of
bubbles produced per minute
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Why is sodium hydrogen carbonate used in the experiment?
To provide a source of
COâ‚‚
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Why is an LED light source used in the experiment?
It gives off
minimal heat energy
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What are the control variables in the photosynthesis experiment?
Concentration
of
sodium hydrogen carbonate
solution
Temperature of the water
Size of
Cabomba
cuttings
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What happens to the rate of photosynthesis as temperature increases?
It increases until
enzymes
denature
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What is the purpose of using a gas syringe in the experiment?
To measure the
volume
of
oxygen
produced
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What is the definition of photosynthesis?
Process by which
plants
make their own food
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What are the products of photosynthesis?
Glucose
and
Oxygen
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What type of reaction is photosynthesis?
Endothermic
reaction
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Where is chlorophyll located in plant cells?
In
chloroplasts
, especially in
palisade
cells
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What factors affect the rate of photosynthesis?
Light intensity
,
COâ‚‚
concentration, temperature
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How does light intensity affect photosynthesis?
Higher light intensity increases the
rate
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What happens to the rate of photosynthesis if carbon dioxide concentration increases?
The
rate
will
increase
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How does temperature affect the rate of photosynthesis?
Higher temperatures increase
reaction rates
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What is phagocytosis?
Process where
cells
engulf pathogens
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What are pathogens?
Microorganisms
that cause
infectious disease
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How do antibiotics work?
They kill
bacteria
without harming
host cells
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Who discovered penicillin?
Alexander Fleming
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What is the difference between bacteria and viruses?
Bacteria can be treated with
antibiotics
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What do painkillers do?
Relieve
symptoms
without killing
pathogens
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What is a vaccine?
A dead or inactive form of a
pathogen
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How do vaccines work?
They stimulate
antibody
production in the body
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What is the role of lymphocytes?
Recognize
antigens
and produce
antibodies
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What are antitoxins?
Chemicals that neutralize toxins from
pathogens
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What are the methods of disease prevention?
Sterilizing
water
Personal and food
hygiene
Vaccination
Contraception
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What is the method of spread for measles?
Inhaling
droplets
from coughing and sneezing
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What are the symptoms of gonorrhea?
Painful
urination
and yellow/green discharge
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How is salmonella spread?
Through
contaminated
food or water
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What is the treatment for HIV?
Antiretroviral
drugs
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What is the role of the heart?
To pump
blood
around the body
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What is double circulation?
Two systems for
blood circulation
in the body
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Why is the left ventricle thicker than the right ventricle?
To pump blood at
high pressure
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What is the function of the pacemaker cells?
To regulate the
heartbeat
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What is the process of photosynthesis?
Carbon dioxide
+ water + light →
oxygen
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What is the role of chlorophyll in photosynthesis?
It
absorbs
light
energy
for
photosynthesis
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What is the function of the cytoplasm in a cell?
Place where
reactions
take place
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What does the nucleus contain?
Genetic information
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See all 101 cards
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