BIO 1201 Study Questions

A reaction in which ATP is cleaved allowing a second unfavorable reaction to occur is ____________

a coupled reaction

In an alpha helix, a hydrogen atom participates in a covalent bond with a nitrogen atom of one amino acid and also weakly interacts with an oxygen atom. What is this second weaker interaction called?

a hydrogen bond

Sulfur has 6 electrons in its outer electron shell. it combines covalently with hydrogen to form a stable (and smelly) compound. What is the structure of this compound? a) HS b) HS2 c) H2S d) H3S2 e) H4S

c) H2S

Which of the sequences below goes from the largest to the smallest? a) liver cell, hemoglobin, carbon atom, cell nucleus, amino acid b)liver cell, hemoglobin, amino acid, cell nucleus, carbon atom c)Liver cell, cell nucleus, hemoglobin, amino acid, carbon atom d)liver cell, cell nucleus, amino acid, hemoglobin, carbon atom e) cell nucleus, liver cell, hemoglobin, amino acid, carbon atom

c) Liver cell, cell nucleus, hemoglobin, amino acid, carbon atom

Which is an example of a lipid? a) insulin b) sucrose c) cellulose d) triglyceride e)ATP

d) triglyceride

Which of the following is an example of a carbohydrate? a) a triglyceride b) ATP c)insulin d)cellulose e) DNA

d)cellulose

It is presently thought that chlorophyll is essential for photosynthesis. Which of the following observations would disprove this hypothesis? a) a plant is discovered that performed photosynthesis but has no chlorophyll b) it is found that a part of the plant that does not contain chlorophyll (like the root) does photosynthesis c) It is found that a part of the plant cell that does not contain chlorophyll (like the central vacuole) does photosynthesis d) Chlorophyll is removed from a plant and it is still able to do photosynthesis e) any of the above observations would disprove the hypothesis

e)

Which of the following is NOT associated with protein function? a) transport of molecules across membranes b) movement of an organism c) communication between cells (hormones) d) catalysis of chemical reactions e) all of these functions are associated with proteins

e)

Sedoheptulose is a seven carbon sugar. what is its molecular formula? a) C6 H12 N6 b) C6 H12 N6 c) C7 H12 O6 d) C7 H14 H6 e) C7 H14 O7

e) C7 H14 O7

Why does your instructor argue that a carrot in the market is alive? a) it is still capable of growth b) it is still metabolically active c) it is still capable of reproduction d) it can still acquire nutrients from the environment e) all of the above reasons are true

e) all of the above reasons are true

This contains the vast majority of the cell's DNA

nucleus

These organelles are found in plant cells

nucleus, vacuole, mitochondria, and cytoskeleton

What type of linkage connect amino acids in proteins?

peptide bonds

You are trying to identify and organism by looking at a group of its cells under the microscope. It is multi cellular and the cells clearly have a cell wall. The cells have many internal organelles but no chloroplasts. To which kingdom does this organism belong?

Fungi

Bacillus anthracis cells were treated with lysozyme which destroys the cell wall. These treated cells are then placed in pure water. What would you expect to happen to this cells?

They would swell and burst

A mole of water weighs 18 grams while a mole of sucrose weighs 342 grams. Which statement is true? a) a mole of sucrose has more molecules than a mole of water b) a mole of sucrose has the same number of molecules as a mole of water c) a mole of sucrose has less molecules than a mole of water d)moles are known for their excellent vision

b) a mole of sucrose has the same number of molecules as a mole of water

Compared to 40^K, the isotope 39^K has

b) one less neutron

Which statement(s) about ALL living things are true? a) all living things are capable of sight b) all living things have a nervous system of some sort c) all living things are capable of reproduction d) all of the above statements are true e) none of the above statements are true

c) all living things are capable of reproduction

Cl- is an example of a(n) _______ a) amphipathic molecule b) cation c) anion d) zwitterion e) iconoclast

c) anion (negative charge)

Acid rain sometimes has a pH of 5. what is the H+ concentration?

1 x 10^-5

The H+ concentration in a person's stomach might be as low as 1x10-2 M after eating a five hongo burrito at the sanitary burrito factory (actually a fine fine restaurant). What is the pH of that person's stomach?

2

In biological molecules, nitrogen atoms normally form ________ bonds a)two ionic b) three ionic c) two covalent d) three covalent e) four covalent

d) three covalent

K+ is transported into cells by a protein that cleaves ATP. The concentration of K+ inside the cell is greater than the K+ outside the cell. What type of transport is occurring?

Active Transport

These organelles contain proteins

Nucleus, vacuole, mitochondria, and cytoskeleton, cytosol

Which gas was much less abundant in earth's early atomosphere than it is now?

O2

O2 enters human muscle cells. No energy is needed for this process and no transport proteins are required. What membrane transport process is likely to be involved?

Simple diffusion

Which of the following would NOT normally be found in a plasma membrane? a) cellulose b) transport proteins c) phospholipids d) cholesterol e) all of the above are normally found in the plasma membrane

a) cellulose

A nucleic acid was isolated from a new plague-causing virus. Analysis of this nucleic indicated the following base composition: 20% Adenine, 30% uracil, 10% guanosine and 40% cytosine. From this information, which of the statements are true? a) the virus contains RNA b) the virus contains DNA c) the virus has a double stranded nucleic acid d) statements c and d are true e) statements b and c are true

a) the virus contains RNA

Maltose is a disaccharaide consisting of two glucose sugars linked together. What is the formula?

c) C12 H22 O11

carbon atoms tend to form __________ bonds

covalent

Why is water cohesive? a)water molecules are nonpolar b) one side of the molecule is slightly positive and the other side slightly negative c) water molecules participate in hydrogen bonds d) answers b and c are correct e) all of the above answers are correct

d) answers b and c are correct

Cellulose is: a) a storage polysaccharaide found in plants b) a storage polysaccharide found in animals c) a monosaccharaide used for energy in all cells d) a 5-carbon sugar which is a component of RNA e) a structural polysaccharide found in the cell wall of plants

e) a structural polysaccharide found in the cell wall of plants

__________are components of phospholipids

fatty acids

This organelle is involved in energy generation

mitochondria

One of the principle functions of the cell wall is to _________

protect the cell from osmotic lysis

Which component is present in prokaryotic cells?

ribosomes

A protein known as phospholipase removes fatty acids from phospholipids. What cellular structure would be most affected by this enzyme?

the cell membranes