Amoebas include microbes with _________.

a. threadlike pseudopods

b. eyespots

c. parabasal bodies

d. alveoli

Which of the following is common to mitosis and meiosis?

a. spindle

b. crossing over

c. tetrad of chromatids

d. cytokinesis

Which of the following sequences reflects the correct order of events in mitosis?

a. telophase, anaphase, metaphase, prophase

b. prophase, anaphase, metaphase, telophase

c. telophase, prophase, metaphase, anaphase

d. prophase, metaphase, anaphase, telophase

Which of the following statements accurately describes prophase?

a. The cell appears to have a line of chromosomes across the midregion.

b. The nuclear envelope becomes visible.

c. The cell constructs microtubules to form a spindle.

d. Chromatids separate and become known as chromosomes.

Multiple nuclear divisions without cytoplasmic divisions result in cells called _________.

a. mycoses

b. coenocytes

c. haustoria

d. a pseudohypha

The stemlike portion of a seaweed is called its _________.

a. trunk

b. holdfast

c. stipe

d. blade

Carrageenan is found in the cell walls of which group of algae?

a. red algae

b. green algae

c. dinoflagellates

d. yellow-green algae

Describe the nuclear divisions that produce eight ascospores in an ascus.

Describe the endosymbiotic theory. What evidence supports the theory? Which features of eukaryotic cells are not explained by the theory?

_____ Biofilms of microorganisms form in aquatic environments only.