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2: Review - Biology

2: Review - Biology


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2: Review

2: Review - Biology

  1. ? lowering activation energy
  2. ? increasing temperature
  3. ? creating more reactants
  4. ? increasing activation energy
  1. ? maltose is the substrate
  2. ? maltase is the substrate
  3. ? maltase is the product
  4. ? water is the substrate
  5. ? maltose is the product

The enzyme-substrate complex is

  1. ? enzymes are quickly used up
  2. ? most cellular reactions require a specific, unique enzyme
  3. ? they have to have some way to use up the protein that they consume
  4. ? enzymes are not very effective at speeding up reactions

What phenomenon explains the flat area on the graph between points B and C?

  1. ? the reaction has come to a stop
  2. ? all of the enzyme's active sites are occupied
  3. ? the reaction has run out of substrate
  4. ? the enzyme has stopped working

Which of these changes might increase the rate of the reaction beyond point C?

In the area marked A on the graph, many of the enzyme molecules have active sites that are

Which of the following changes might cause a decrease in the rate of the reaction beyond point C?

  1. ? addition of more substrate
  2. ? addition of an inhibitor
  3. ? a decrease in temperature
  4. ? a change in pH
  5. ? an increase in temperature
  6. ? addition of more enzyme molecules
  1. ? much larger cells
  2. ? more organelles
  3. ? larger proteins
  4. ? higher temperatures
  1. ? that liver contains lots of germs
  2. ? the liver contains an enzyme that breaks down hydrogen peroxide
  3. ? that liver is a substrate for hydrogen peroxide
  4. ? that hydrogen peroxide is a powerful enzyme
  1. ? heating kills the germs that cause the bubbling
  2. ? heating damages the enzyme in liver that breaks down hydrogen peroxide
  3. ? heating removes the water and oxygen from the liver
  4. ? reactions take place faster at lower temperatures
  1. ? Add more substrate
  2. ? Remove substrate
  3. ? Add more enzyme molecules
  4. ? Remove enzyme molecules
  5. ? Add more water
  1. ? the nucleus
  2. ? the mitochondrion
  3. ? the vacuole
  4. ? the endoplasmic reticulum
  5. ? the ribosome
  6. ? the chloroplast



Photosynthesis takes place in the organelle labeled

Review Questions

Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom?

  1. It has 12 protons, 12 electrons, and 12 neutrons.
  2. It has 12 protons, 12 electrons, and six neutrons.
  3. It has six protons, six electrons, and no neutrons.
  4. It has six protons, six electrons, and six neutrons.

Which type of bond represents a weak chemical bond?

An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?

Which of the following statements is not true?

  1. Water is polar.
  2. Water stabilizes temperature.
  3. Water is essential for life.
  4. Water is the most abundant atom in Earth’s atmosphere.

Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution?

The pH of lemon juice is about 2.0, whereas tomato juice's pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice?

An example of a monosaccharide is ________.

Cellulose and starch are examples of ________.

Phospholipids are important components of __________.

  1. the plasma membrane of cells
  2. the ring structure of steroids
  3. the waxy covering on leaves
  4. the double bond in hydrocarbon chains

The monomers that make up proteins are called _________.

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    • Book URL: https://openstax.org/books/concepts-biology/pages/1-introduction
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    Review Questions

    Based on the information provided, which of the following statements is correct?

    1. In NH2, the nitrogen atom acquires a partial positive charge and the hydrogen atoms acquire a partial negative charge.
    2. In H2O, the hydrogen atoms acquire a partial negative charge, and the oxygen atom acquires a partial positive charge.
    3. In aqueous HCl, the hydrogen atom acquires a partial positive charge, and the chlorine atom acquires a partial negative charge.
    4. In LiF, the lithium atom acquires a positive charge, and the fluorine atom acquires a negative charge.
    1. Water is polar.
    2. Water can stabilize the temperature of nearby air.
    3. Water is essential for life.
    4. Water is the most abundant molecule in the Earth’s atmosphere.
    1. Hydrogen is more electronegative than oxygen, generating a partial negative charge near the hydrogen atom.
    2. Hydrogen is more electronegative than oxygen, generating a partial positive charge near the hydrogen atom.
    3. Oxygen is more electronegative than hydrogen, generating a partial negative charge near the oxygen atoms.
    4. Oxygen is more electronegative than hydrogen, generating a partial positive charge near the oxygen atoms.
    1. The pH of the solution decreases.
    2. The pH of the solution increases.
    3. The pH of the solution increases and then decreases.
    4. The pH of the solution stays the same.
    1. Acids and bases cannot mix together.
    2. Acids and bases can neutralize each other.
    3. Acids, not bases, can change the pH of a solution.
    4. Acids donate hydroxide ions ( ext^- ) bases donate hydrogen ions ( ext^+ ).
    1. a force that allows surface water molecules to escape and vaporize
    2. the attraction between water molecules and other molecules
    3. the intermolecular force between water molecules
    4. the force that keeps particles dispersed in water
    1. Molecules with the formulas ext_3 ext_2 ext and ext_3 ext_6 ext_2 could be structural isomers.
    2. Molecules must have a single bond to be cis-trans isomers.
    3. To be enantiomers, a molecule must have at least three different atoms or groups connected to a central carbon
    4. To be enantiomers, a molecule must have at least four different atoms or groups connected to a central carbon
    1. Hydrocarbon consisting of closed rings of carbon atoms
    2. Isomers with similar bonding patterns differing in the placement of atoms along a double covalent bond.
    3. Molecules that share the same chemical bonds but are mirror images of each other.
    4. Molecules with the same chemical formula but differ in the placement of their chemical bonds

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      If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:

    • Use the information below to generate a citation. We recommend using a citation tool such as this one.
      • Authors: Julianne Zedalis, John Eggebrecht
      • Publisher/website: OpenStax
      • Book title: Biology for AP® Courses
      • Publication date: Mar 8, 2018
      • Location: Houston, Texas
      • Book URL: https://openstax.org/books/biology-ap-courses/pages/1-introduction
      • Section URL: https://openstax.org/books/biology-ap-courses/pages/2-review-questions

      © Jan 12, 2021 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License 4.0 license. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.


      Watch the video: Topic 2 Review Video - IB Biology (June 2022).


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