Here are the answers to the multiple-choice questions you provided:
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Which of the following is NOT a limitation of science?
- Science is always changing.
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What is the main difference between a hypothesis and a theory in scientific research?
- A hypothesis is a tentative explanation that can be tested by experiments, while a theory is a well-substantiated explanation based on a body of evidence.
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What part of the scientific method is most likely to lead to changes in a theory?
- Results
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What is the primary building block of proteins?
- Amino acids
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What is the main function of enzymes in biological systems?
- To speed up chemical reactions
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What are the two main types of nucleic acids?
- DNA and RNA
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Which type of biomolecule is primarily involved in cell membrane structure?
- Lipids
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What type of macromolecule is an enzyme?
- Protein
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What is the main function of carbohydrates in the body?
- Provide energy
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(This question appears to be incomplete or missing.)
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Identify the organelles labeled in the image (answers will vary depending on the image).
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Prokaryotic cells do not have a nucleus.
- True
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Which systems are primarily involved in protecting the body from pathogens?
- Immune and integumentary
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A virus that is actively copying its nucleic acid and then bursting the host cell is undergoing what type of reproduction?
- Lytic
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Place the following phases of mitosis in chronological order from beginning to end:
- Prophase, Metaphase, Anaphase, Telophase
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During which phase of the cell cycle does DNA replication occur?
- S phase
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Complete the statement: The movement of water molecules from an area of higher concentration to an area of lower concentration is called osmosis.
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How do the circulatory and respiratory systems work together?
- By exchanging oxygen and carbon dioxide.
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The phase of mitosis characterized by the lining up of chromosomes along the middle of the cell is known as Metaphase.
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Which organelle is primarily responsible for photosynthesis in plant cells?
- Chloroplast
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Identify the reactants and products for photosynthesis:
- Reactant: Water (H2O) → Product: Oxygen (O2)
- Reactant: Carbon Dioxide (CO2) → Product: Glucose (C6H12O6)
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Where does cellular respiration primarily occur in eukaryotic cells?
- Mitochondria
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Which of the following is the chemical equation for cellular respiration?
- C6H1206 + 6O2 --> 6H2O + 6CO2 + Energy
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Which of the following is the complementary DNA strand for this original strand?
- TAG CGA TTA
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Label the parts of the DNA in the image (answers will vary depending on the image).
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What is happening in translation?
- Information from mRNA is used to produce proteins.
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DNA contains the nitrogenous base thymine, which is replaced by uracil in RNA.
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According to the chart, what codon represents the amino acid Histidine (His)?
- CAU
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If a heterozygous tall pea plant is crossed with a homozygous recessive short pea plant, what percentage of the offspring is expected to be tall?
- 50%
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Identify the mutations in the image (answers will vary depending on the image).
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If a black chicken (BB) is crossed with a white chicken (WW) and incomplete dominance is observed, what are the expected phenotypes of the offspring?
- All gray
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Which phase of mitosis is represented by the image (depends on the image).
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Which of the following scenarios is mitosis in action?
- A skin cell repairing itself after a cut.
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In which type of solution does water move into the cell causing the cell to swell?
- Hypotonic solution
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Which of the following best describes endocytosis?
- The process by which cells ingest external materials by engulfing them.
If you have additional questions or need further clarification on specific items, feel free to ask!
1 answer