Independent and Dependent Variables in Experiments

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Questions and Answers

What is the function of the cell membrane?

  • Makes and folds proteins
  • Stores DNA
  • Acts as a control center of the cell
  • Serves as a semi-permeable barrier around the cell (correct)

Which organelle is responsible for making and folding proteins?

  • Cytoplasm
  • Cell Membrane
  • Nucleus
  • Ribosomes (correct)

What distinguishes prokaryotic cells from eukaryotic cells?

  • Absence of DNA
  • Complexity of organelles
  • Presence of a nucleus (correct)
  • Lack of a cell membrane

Where is DNA stored in prokaryotic cells?

<p>Cytoplasm (D)</p> Signup and view all the answers

What term is used to refer to a predicted answer to a problem, also known as an 'educated guess'?

<p>Hypothesis (C)</p> Signup and view all the answers

What is the primary function of the nucleus in a cell?

<p>Store DNA (D)</p> Signup and view all the answers

Which phase of the scientific method involves setting up a test or procedure to determine if the hypothesis is correct?

<p>Experiment (D)</p> Signup and view all the answers

Why do prokaryotic cells have fewer compartments compared to eukaryotic cells?

<p>To ensure most cell processes occur in the cytoplasm (D)</p> Signup and view all the answers

What aspect of the experiment must be controlled to ensure accurate results?

<p>Constant factors (C)</p> Signup and view all the answers

Which part of the scientific method involves recording and analyzing what occurred during the experiment?

<p>Analysis (D)</p> Signup and view all the answers

In the scientific method, what is the name given to all other factors that need to be controlled during an experiment?

<p>Constant factors (A)</p> Signup and view all the answers

What is the term for reviewing the data collected and verifying if the hypothesis was correct in the scientific method?

<p>Conclusion (B)</p> Signup and view all the answers

What is the main difference between fragmentation and budding?

<p>Fragmentation involves the development of a new organism attached to the parent, whereas budding involves the detached offspring growing independently. (D)</p> Signup and view all the answers

Which cellular organelle is primarily responsible for cellular respiration?

<p>Mitochondria (D)</p> Signup and view all the answers

What process occurs in the cytoplasm outside of the mitochondria during cellular respiration?

<p>Glycolysis (A)</p> Signup and view all the answers

What is the end product when glucose undergoes cellular respiration?

<p>Carbon Dioxide, Water, and Adenosine Tri-Phosphate (B)</p> Signup and view all the answers

How does a new organism develop in vegetative reproduction?

<p>Through a long, slim shoot extending from a plant (A)</p> Signup and view all the answers

What role does the Citric Acid Cycle (Kreb Cycle) play in cellular respiration?

<p>It is where energy is added to molecules (D)</p> Signup and view all the answers

Which variable in an experiment is 'dependent' on the independent variable?

<p>Dependent variable (C)</p> Signup and view all the answers

In an experiment measuring the relationship between sleep and tiredness, what is the independent variable?

<p>Amount of sleep (A)</p> Signup and view all the answers

What distinguishes a 'Theory' from a 'Fact'?

<p>Theories are subject to change with new information, while facts are universally agreed upon (B)</p> Signup and view all the answers

What is the primary characteristic of conspiracy theorists according to the text?

<p>They believe in the power held by certain groups over them (D)</p> Signup and view all the answers

Which term describes a collection of facts related to a specific hypothesis?

<p>Data (B)</p> Signup and view all the answers

How are theories described in relation to testing and new information?

<p>Theories are major hypotheses that can evolve with new information (A)</p> Signup and view all the answers

How many ATP molecules are consumed during the 'investment phase' of cellular respiration?

<p>2 ATP (D)</p> Signup and view all the answers

Where do the preparatory reactions of cellular respiration occur?

<p>Mitochondria (D)</p> Signup and view all the answers

How many NADH molecules are generated in the Citric Acid Cycle per glucose molecule entering cellular respiration at glycolysis?

<p>8 NADH (B)</p> Signup and view all the answers

What is the total range of ATP molecules yielded through cellular respiration?

<p>36 to 38 ATP (A)</p> Signup and view all the answers

How many molecules of ATP are produced in the Electron Transport Chain (ETC) step of cellular respiration?

<p>32 to 34 ATP (B)</p> Signup and view all the answers

What is the final electron acceptor in the Electron Transport Chain (ETC)?

<p>Oxygen (D)</p> Signup and view all the answers

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