Chapter 4 Microbiology

20. The size of a eukaryotic cell ribosome is _____.

30S 40S 50S 70S 80S 80S

19. Which organelle is found in algae but not found in protozoa or fungi?

Mitochondria Lysosome Golgi apparatus Chloroplast Endoplasmic reticulum Chloroplast

18. Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?

Mitochondria Lysosomes Golgi apparatus Chloroplasts Endoplasmic reticulum Mitochondria

7. Which of the following is not a function of the eukaryote glycocalyx?

Protection Adherence Movement Reception of chemical signals Movement

2. The first primitive eukaryotic cells likely evolved from _____.

archaea bacteria prokaryotes the last common ancestor the last common ancestor

16. Protists with contractile vacuoles ________.

are algae use them to expel excess water from the cell typically live in salty seawater use them for motility All of the choices are correct. use them to expel excess water from the cell

4. There are nine peripheral pairs and one central pair of _______ found inside eukaryotic flagella and cilia.

filaments microtubules flagella cilia microtubules

12. Histones are ________.

found in polyribosomes enzymes found in lysosomes proteins of the cytoskeleton proteins associated with DNA in the nucleus on the surface of rough endoplasmic reticulum proteins associated with DNA in the nucleus

13. The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear ________.

histones chromatin pores endoplasmic reticulum inclusions pores

15. An organelle that is a stack of flattened, membranous sacs and functions to receive, modify, and package proteins for cell secretion is the ________.

mitochondria lysosome Golgi apparatus chloroplast endoplasmic reticulum Golgi apparatus

14. The cell's series of tunnel-like membranes functioning in transport and storage are the _____.

mitochondria lysosomes Golgi apparatus chloroplasts endoplasmic reticulum endoplasmic reticulum

6. The eukaryotic cell's glycocalyx is ________.

mostly polysaccharide the site where many metabolic reactions occur also called the cell wall composed of lipids mostly polysaccharide

10. The site for ribosomal RNA synthesis is the _____.

nucleolus nucleus Golgi apparatus lysosome ribosome nucleolus

11. When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible network of dark fibers called the _____.

nucleoplasm chromatin nuclear envelope nucleolus nucleosome chromatin

17. A(n) _______ originates from the Golgi apparatus as one type of vesicle that contains a variety of enzymes for intracellular digestion.

perixosome lysosome magnetosome inclusion ribosome lysosome

3. Cilia are structures for motility found primarily in _____.

protozoa algae fungi bacteria protozoa

5. Cell walls are not usually found in _____.

protozoa algae fungi bacteria protozoa

8. Chitin is a chemical component of the cell walls of _____.

protozoa algae fungi bacteria All of the choices are correct. fungi

9. The eukaryote cell membrane is composed of _____.

sterols proteins phospholipids cholesterol All of the choices are correct. All of the choices are correct.

1. Protists include ________.

yeasts and molds algae and protozoa helminths All of the choices are correct. algae and protozoa