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Questions and Answers
Which of the following molecules is a waste product of photosynthesis?
Which of the following molecules is a waste product of photosynthesis?
- Oxygen (correct)
- Sugar
- Carbon dioxide
- Water
Chlorophyll is mostly located above the leaf of the plant to:
Chlorophyll is mostly located above the leaf of the plant to:
- Collect carbon dioxide
- Release glucose
- Release oxygen
- Collect light energy (correct)
Iodine is used to detect the presence of starch produced in photosynthesis. This works when:
Iodine is used to detect the presence of starch produced in photosynthesis. This works when:
- Its brown color turned into dark blue (correct)
- Its brown color become yellow
- Its brown color become colorless
- Its brown color has not changed
Cramps during exercise are caused by:
Cramps during exercise are caused by:
Which of the following processes produces the most ATP?
Which of the following processes produces the most ATP?
Which type of circulation describes the movement of blood through the tissues of the heart?
Which type of circulation describes the movement of blood through the tissues of the heart?
What structure in the heart prevents the back flow of blood?
What structure in the heart prevents the back flow of blood?
In the sequence of blood flow through the heart, which comes first?
In the sequence of blood flow through the heart, which comes first?
What primarily causes the beating sound of your heart?
What primarily causes the beating sound of your heart?
Which two respiratory problems are treated with medications that dilate the airways?
Which two respiratory problems are treated with medications that dilate the airways?
What system is responsible for the exchange of oxygen and carbon dioxide between the air and the cells?
What system is responsible for the exchange of oxygen and carbon dioxide between the air and the cells?
Why is atherosclerosis particularly serious in the coronary arteries?
Why is atherosclerosis particularly serious in the coronary arteries?
Which part of the respiratory system filters and warms the air upon entering it?
Which part of the respiratory system filters and warms the air upon entering it?
How does the air enter our body?
How does the air enter our body?
Which activity is most beneficial for keeping your heart strong?
Which activity is most beneficial for keeping your heart strong?
What is the basic unit of heredity?
What is the basic unit of heredity?
During inhalation, which statement accurately describes the diaphragm's movement?
During inhalation, which statement accurately describes the diaphragm's movement?
All of the following are associated with respiratory problems EXCEPT:
All of the following are associated with respiratory problems EXCEPT:
What is the role of ALVEOLI in the transport of GASES in the body?
What is the role of ALVEOLI in the transport of GASES in the body?
Which of the following statements is TRUE?
Which of the following statements is TRUE?
Which of the following best describes ways to avoid respiratory problems?
Which of the following best describes ways to avoid respiratory problems?
Which allele is dominant in the flower color cross between a red-flowered plant and a white-flowered plant?
Which allele is dominant in the flower color cross between a red-flowered plant and a white-flowered plant?
What is the phenotype of a cat with the genotype Ss for fur length?
What is the phenotype of a cat with the genotype Ss for fur length?
Which rabbits will have a gray coat color where B is black fur and b is white fur?
Which rabbits will have a gray coat color where B is black fur and b is white fur?
If rabbits 1 and 4, genotypes BB and bb respectively, had 12 babies, how many would you expect to be gray?
If rabbits 1 and 4, genotypes BB and bb respectively, had 12 babies, how many would you expect to be gray?
What type of inheritance occurs when both alleles are expressed equally in a heterozygote?
What type of inheritance occurs when both alleles are expressed equally in a heterozygote?
What are the possible blood types of an offspring if both parents are type O?
What are the possible blood types of an offspring if both parents are type O?
What is the genotype for male humans with sex chromosomes X and Y?
What is the genotype for male humans with sex chromosomes X and Y?
Which trait is not controlled by multiple genes?
Which trait is not controlled by multiple genes?
What is the genotype of Jane's husband?
What is the genotype of Jane's husband?
Which statement is true regarding genes and chromosomes?
Which statement is true regarding genes and chromosomes?
What are the bases on the complementary DNA strand for A A G C C A?
What are the bases on the complementary DNA strand for A A G C C A?
What does extinction mean?
What does extinction mean?
A major benefit from the release of wolves into Yellowstone National Park is:
A major benefit from the release of wolves into Yellowstone National Park is:
What happens when forests are cleared for agricultural use?
What happens when forests are cleared for agricultural use?
What does acid deposition occur from?
What does acid deposition occur from?
What is the correct formula for photosynthesis?
What is the correct formula for photosynthesis?
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Study Notes
Respiratory System
- Responsible for gas exchange: oxygen and carbon dioxide.
- Air filtration and warming performed by the nasal cavity.
- Typical air pathway: nose > nasal passage > trachea > bronchi > bronchioles > alveoli.
- Inhalation involves diaphragm movement downwards and expansion of the chest cavity.
- Avoiding smoking, maintaining a healthy weight, and staying hydrated help prevent respiratory issues.
Circulatory System
- Heart is the primary organ; it pumps oxygen-rich blood and maintains circulation.
- Coronary circulation involves blood movement through the heart tissues.
- Valves prevent backflow of blood within the heart.
- Heart functions: right ventricle sends blood to lungs; left ventricle pumps oxygenated blood to the body.
- Atherosclerosis limits oxygen-rich blood flow, particularly dangerous in coronary arteries due to heart attack risk.
Genetics and Heredity
- Basic unit of heredity is the gene; DNA is the hereditary material.
- Dominant alleles mask recessive alleles, with specific traits appearing in offspring (e.g., red flowers dominate over white).
- Codominance expresses both alleles in heterozygotes, exemplified by roan cattle.
- ABO blood groups are controlled by multiple alleles, with O type being recessive.
Evolution and Ecology
- Extinction occurs when the last member of a species dies.
- Introduction of wolves in Yellowstone helped control elk population and ecosystem balance.
- Deforestation involves clearing forests for agriculture or urban use, leading to ecological concerns.
- Conservation biologists work on protecting endangered species and studying ecosystems.
Environmental Science
- Acid deposition results from sulfur dioxide and nitrogen oxide combining with water, leading to environmental acidity.
- Air pollution affects climate and ozone depletion.
- Photosynthesis equation: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2; oxygen is a waste product.
- Chlorophyll's location facilitates light energy absorption for photosynthesis.
Cellular Respiration
- Krebs cycle starts with Acetyl-CoA production.
- End products of Krebs include ATP, NADH, FADH.
- Cramps during exercise can result from lactic acid fermentation.
- Oxidative phosphorylation generates the most ATP in cellular respiration.
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