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Questions and Answers

What is an ion?

  • A neutral atom
  • A molecule held together by covalent bonds
  • An atom with a defined structure
  • A charged atom (correct)

What type of bond is formed when two pairs of electrons are shared between two atoms?

  • Ionic bond
  • Single bond
  • Double bond (correct)
  • Hydrogen bond

Which of the following is NOT a property of water due to hydrogen bonding?

  • Good solvent
  • Low density as a liquid (correct)
  • High boiling point
  • Cohesion

What defines a macromolecule?

<p>A large molecule made from smaller building blocks (B)</p> Signup and view all the answers

Which of the following describes the primary function of carbohydrates?

<p>They serve as the primary fuel for cellular processes (B)</p> Signup and view all the answers

What role do buffers play in a solution?

<p>They resist changes in pH (A)</p> Signup and view all the answers

Which statement about ionic bonds is true?

<p>Ionic bonds involve the attraction of oppositely charged ions. (D)</p> Signup and view all the answers

What is the simplest form of carbohydrates known as?

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

What distinguishes a control group from an experimental group in an experiment?

<p>Control groups receive treatment similar to the experimental group without the tested factor. (A)</p> Signup and view all the answers

What is the primary function of the Golgi apparatus?

<p>Processing and packaging molecules (A)</p> Signup and view all the answers

Which statement correctly defines a theory in a scientific context?

<p>A theory is an explanatory hypothesis well-supported by empirical data. (A)</p> Signup and view all the answers

What is the placebo effect?

<p>A favorable response to any treatment due to belief rather than the treatment itself. (D)</p> Signup and view all the answers

What role do enzymes in the Golgi apparatus play?

<p>They modify molecules by adding or removing groups. (C)</p> Signup and view all the answers

What is a primary role of plasmodesmata in plant cells?

<p>Facilitating communication and transport between cells (D)</p> Signup and view all the answers

What is a primary characteristic of pseudoscience?

<p>It presents scientific-sounding claims without proper support. (D)</p> Signup and view all the answers

How does the cell wall benefit plant cells?

<p>Provides structural strength and water resistance (D)</p> Signup and view all the answers

Why is controlling variables important in experiments?

<p>It minimizes the impact of other factors on the experimental outcomes. (A)</p> Signup and view all the answers

What is the primary function of nuclear pore proteins?

<p>To regulate transport of molecules across the nucleus (A)</p> Signup and view all the answers

What does anecdotal observation rely on?

<p>A few personal or isolated experiences. (C)</p> Signup and view all the answers

Which of the following is NOT a function of the vacuole in plant cells?

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

Which part of the cell is primarily responsible for assembling ribosomal subunits?

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

What does the term 'treatment' refer to in an experimental setup?

<p>It refers to a condition or procedure applied to subjects. (A)</p> Signup and view all the answers

What happens to molecules when they bud off from the Golgi apparatus?

<p>They move into the cytosol in vesicles. (A)</p> Signup and view all the answers

What type of protein fibers are microtubules classified as?

<p>Rigid, hollow tubes (D)</p> Signup and view all the answers

What type of material can be stored in the vacuole?

<p>Nutrients and waste products (C)</p> Signup and view all the answers

Which of the following describes what variables in an experiment may include?

<p>The dosage of a compound administered. (A)</p> Signup and view all the answers

What final action occurs for molecules processed in the Golgi apparatus that are meant for delivery elsewhere in the body?

<p>They exit via exocytosis after fusion with the plasma membrane. (C)</p> Signup and view all the answers

What is the main role of the cytoskeleton in eukaryotic cells?

<p>Guiding intracellular traffic flow (A)</p> Signup and view all the answers

Which function is associated with microfilaments in the cytoskeleton?

<p>Generating cell movement forces (D)</p> Signup and view all the answers

Which statement best describes intermediate filaments?

<p>They provide a durable, rope-like structure. (B)</p> Signup and view all the answers

What are cilia primarily used for in a cell?

<p>Moving extracellular fluid past the cell (B)</p> Signup and view all the answers

How do nuclear pore proteins facilitate cellular activities?

<p>By regulating the movement of materials into and out of the nucleus (A)</p> Signup and view all the answers

What is the primary purpose of the Krebs cycle?

<p>To capture and store energy in high-energy molecules (D)</p> Signup and view all the answers

Where do the Krebs cycle and electron transport chain occur in the cell?

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

Which process occurs in the absence of oxygen?

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

What is produced as a result of fermentation in yeast?

<p>Ethanol and carbon dioxide (D)</p> Signup and view all the answers

How are fatty acids entered into the Krebs cycle?

<p>Chemically modified into acetyl-CoA (B)</p> Signup and view all the answers

Which of the following molecules is NOT produced during the Krebs cycle?

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

The electron transport chain primarily functions to:

<p>Capture electrons to generate ATP (A)</p> Signup and view all the answers

After glycolysis, what happens to pyruvate if oxygen is not available?

<p>It acts as an electron acceptor in fermentation (A)</p> Signup and view all the answers

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