Gabrielle Gordon
Quiz von , erstellt am more than 1 year ago

Here are the first ten questions from exam I, scrambled and a little reformatted(in some I switched the question and the answer, and I made a few checkboxes instead of just having one right answer).

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Gabrielle Gordon
Erstellt von Gabrielle Gordon vor etwa 7 Jahre
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Exam I_1-10

Frage 1 von 10

1

Which of the following is the largest?

Wähle eine der folgenden:

  • a hydrogen ion

  • starch

  • a mitochondrion

  • a cell

Erklärung

Frage 2 von 10

1

Compared to when a solution is basic, when a solution is acidic it has...

Wähle eine der folgenden:

  • the same pH

  • more free hydrogen ions

  • fewer total hydrogen ions, both in free and in large molecules

  • higher pH

Erklärung

Frage 3 von 10

1

The membranes that surround cells are made of many ...

Wähle eine der folgenden:

  • triglycerides

  • nucleic acids

  • starches

  • micelles

  • phospholipids

Erklärung

Frage 4 von 10

1

The polarity of water...

Wähle eine oder mehr der folgenden:

  • means that protons are more often found by oxygen, not hydrogen

  • makes water magnetic

  • arises from the difference in electronegativity between oxygen and hydrogen

  • allows water to make covalent bonds

  • allows water to make hydrogen bonds

Erklärung

Frage 5 von 10

1

The polysaccharide most likely to be a structural part of a plant is

Wähle eine der folgenden:

  • glycogen

  • cellulose

  • ATP

  • chitin

Erklärung

Frage 6 von 10

1

The fatty acid tails of phospholipids are...

Wähle eine oder mehr der folgenden:

  • hydrophilic

  • made of steroids

  • hydrophobic

  • facing inside the cell

  • made of glycerol

  • joined to the head by glycerol

  • facing outside the cell

Erklärung

Frage 7 von 10

1

Insulin receptors are proteins in the membranes of cells. When insulin binds to the receptor it changes the shape of the receptor. The shape change activates a response in the cell. You are studying a new protein that no one has studied before. You find out your protein has the same shape as the insulin receptor. Based on this information, you would predict that your new protein has...

Wähle eine der folgenden:

  • a similar function to proteins with different shapes

  • no function-- the protein is denatured

  • a similar function to the known insulin receptors

  • a similar protein to the hydrophilic proteins inside the cells

Erklärung

Frage 8 von 10

1

Pasteur studied germ hypothesis when the spontaneous generation hypothesis was still popular. He sterilized broth in a swan neck flask, and then waited to see if living organisms grew. With the swan neck intact, he observed that when he waited he saw...

Wähle eine oder mehr der folgenden:

  • no bacterial growth

  • bacterial growth

  • data supporting the germ hypothesis

  • data contradicting the germ hypothesis

  • data supporting the spontaneous generation hypothesis

Erklärung

Frage 9 von 10

1

Which type of bond holds two different water molecules to each other, or the two halves of a DNA double helix together?

Wähle eine der folgenden:

  • non-polar covalent bonds

  • ionic bonds

  • hydrogen bonds

  • double covalent bonds

  • polar covalent bonds

Erklärung

Frage 10 von 10

1

Which two are made of monomers and held together with covalent bonds?

Wähle eine oder mehr der folgenden:

  • nucleic acids

  • all acids

  • water

  • proteins

  • starches

Erklärung

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