Gabrielle Gordon
Quiz by , created 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
Created by Gabrielle Gordon over 7 years ago
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Exam I_1-10

Question 1 of 10

1

Which of the following is the largest?

Select one of the following:

  • a hydrogen ion

  • starch

  • a mitochondrion

  • a cell

Explanation

Question 2 of 10

1

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

Select one of the following:

  • the same pH

  • more free hydrogen ions

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

  • higher pH

Explanation

Question 3 of 10

1

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

Select one of the following:

  • triglycerides

  • nucleic acids

  • starches

  • micelles

  • phospholipids

Explanation

Question 4 of 10

1

The polarity of water...

Select one or more of the following:

  • 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

Explanation

Question 5 of 10

1

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

Select one of the following:

  • glycogen

  • cellulose

  • ATP

  • chitin

Explanation

Question 6 of 10

1

The fatty acid tails of phospholipids are...

Select one or more of the following:

  • hydrophilic

  • made of steroids

  • hydrophobic

  • facing inside the cell

  • made of glycerol

  • joined to the head by glycerol

  • facing outside the cell

Explanation

Question 7 of 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...

Select one of the following:

  • 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

Explanation

Question 8 of 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...

Select one or more of the following:

  • no bacterial growth

  • bacterial growth

  • data supporting the germ hypothesis

  • data contradicting the germ hypothesis

  • data supporting the spontaneous generation hypothesis

Explanation

Question 9 of 10

1

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

Select one of the following:

  • non-polar covalent bonds

  • ionic bonds

  • hydrogen bonds

  • double covalent bonds

  • polar covalent bonds

Explanation

Question 10 of 10

1

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

Select one or more of the following:

  • nucleic acids

  • all acids

  • water

  • proteins

  • starches

Explanation

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