Bio Test 2 (Part 3)

1. The electron transfer chain is located

On the inner membrane of the mitochondria.

On the inner membrane of the chloroplasts.

In the fluid part of the chloroplast.

Throughout the cytoplasm of the cell.

On the plasma membrane of eukaryotes.

2. Mitosis and cytoplasmic division function in

Growth.

Repair of damaged tissue.

Replacement of worn-out cells.

Asexual reproduction.

All of these.

3. The generation of concentration and electrical gradients across the membranes of mitochondria is known as which theory of ATP production?

Glycolytic

Negative ion generator

Phosphate pump

Chemiosmotic

None of these

4. Which of the following statements is true?

According to chemiosmotic theory, concentration and electric gradients drive the formation of ATP.

An electron loses energy each time it is transferred down the electron transfer chain.

There is a buildup of hydrogen ions in the outer compartment of the mitochondrion.

ATP synthases are channels for the passage of hydrogen ions.

All of these.

5. The highly toxic cyanide poison binds to the last molecule in the electron transfer chain, halting additional electron transfer. What is the consequence?

Oxygen can't pick up electrons.

No more water will be formed.

No more ATP will be formed.

The affected individual will not survive.

All of these.

6. If anaerobic pathways follows glycolysis,

Co2 will be one of the products as pyruvate is converted to lactate.

The two NADH molecules produced during glycolysis will (depending on the organism) be used to reduce pyruvate to either lactate or ethanol and co2.

ATP will be required to convert pyruvate to either lactate or ethanol and co2.

Oxidative phosphorylation occurs either on the plasma membrane or on derivatives of the plasma membrane.

None of these.

7. The amount of energy released from a glucose molecule is dependent on what happens to

Carbon atoms.

Oxygen atoms.

Hydrogen atoms.

Phosphorous atoms.

Water molecules.

8. When cells are not responding to normal controls over growth and division, they form a tissir mass known as a

Metastasis.

Malignancy.

Tumor.

Carcinogen.

Nucleosome.

9. What is the process by which NADH transfers electrons to oxygen?

Glycolysis

Acetyl-CoA formation

The Krebs cycle

Electron transfer phosphorylation

Substrate-level phosphorylation

10. When a cell undergoes mitosis,

The daughter cells have identical genes.

The daughter cell has genes identical to those of the mother cell that produced it.

The amount of cytoplasm in the mother cell and in each of the daughter cells is equal.

There is an exact duplication and division of all of the organelles between daughter cells.

The daughter cells have identical genes and the daughter cell has genes identical to those of the mother cell that produced it.

11. In mitosis, if a parent cell has 16 chromosomes, each daughter cell will have how many chromosomes?

64

32

16

8

4