First Mid-term control test questions

1. Individual cells are usually very small because

a) small cells contain a greater quantity of enzymes than large cells.

b) materials move in and out of small cells less efficiently than for large cells.

c) the cell membrane encloses the cell and prevents it from increasing in size.

d) the larger the surface area to volume ratio of a cell, the more efficient it is.

2. Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle?

a) mitochondrion

b) lysosome

c) cytoplasm

d) endoplasmic reticulum

3. What structure is common to ALL cells?

a) Chloroplast

b) Cell membrane

c) Cell wall

d) Mitochondria

4. When a large proportion of a cell's ribosomes are attached to the endoplasmic reticulum, it is a sign that the cell is specialized to:

a) Manufacture glucose for storage

b) Manufacture phospholipids for cell growth

c) Perform photosynthesis with high efficiency

d) Manufacture proteins for export

5. In mitosis, which condition is most characteristic of metaphase?

a) replication of the cell's DNA.

b) reformation of the nuclear envelope.

c) positioning of chromosomes on the equatorial plane of the cell.

d) separation of pairs of sister chromatids (the two halves of a duplicated chromosome).

6. During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This phase of cell division is known as:

a) prophase

b) metaphase

c) anaphase

d) telophase

7. In cell division, the phase following the anaphase is known as:

a) prophase

b) metaphase

c) telophase

d) extophase

8. The chromosomes of a eukaryotic cell are located in the:

a) mitochondria

b) nucleus

c) ribosome

d) endoplasma

9. Which is found in the nucleus?

a) ribosome

b) centrosome

c) vacuole

d) chromosome

10. Which structure composed mainly of proteins and lipids, aids in maintaining homeostasis in the cell?

a) chromosome

b) centrosome

c) nucleolus

d) cell membrane

11. The organelle most directly involved in cellular aerobic respiration is the

a) ribosome

b) mitochondrion

c) nucleus

d) lysosome

12. The rigidity (support) of a plant cell is due primarily to the presence of the

a) DNA

b) centrosomes

c) cell membrane

d) cell wall

13. In the laboratory, when iodine solution is used to stain a cell, the cell structure most readily seen is the

a) vacuole

b) cytoplasm

c) golgi complex

d) nucleus

14. Which structure is found ONLY in animal cells?

a) cell wall

b) vacuoles

c) centrioles

d) chloroplasts

15. The organelle most closely associated with the manufacture of proteins within the cell is the

a) ribosome

b) lysosome

c) nucleolus

d) cell wall

16. The cell's primary site of ATP production is the

a) mitochondria

b) lysosomes

c) nucleus

d) nucleolus

17. Which cell parts are only found in plant cells?

a) chloroplast and ribosomes

b) mitochondria and ribosomes

c) chloroplast and mitochondria

d) chloroplast and cell wall

18. Site of protein synthesis (where proteins are assembled)

a) lysosome

b) ribosome

c) vacuole

d) endoplasmic reticulum

19. Aids animal cells in cellular division (mitosis)

a) lysosome

b) ribosome

c) vacuole

d) centriole

20. Storage compartment in a cell

a) lysosome

b) ribosome

c) vacuole

d) endoplasmic reticulum

Date: 2016-01-03; view: 1947