Ch. 4 (All attempts)

The cytoskeleton anchors organelles. provides support. functions in movements of the cytoplasm. helps maintain cell shape. All of the choices are correct.

All of the choices are correct.

The eukaryote cell membrane is composed of sterols. proteins. phospholipids. cholesterol. All of the choices are correct.

All of the choices are correct.

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.

Protozoan cysts are part of all protozoan life cycles. are necessary for transmission to a new host. are helpful in surviving unfavorable conditions. are the primary form of replication. All of the choices are correct.

are helpful in surviving unfavorable conditions.

When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible network of dark fibers called the nuclear envelope. nucleosome. nucleolus. nucleoplasm. chromatin.

chromatin.

Eukaryotic flagella differ from bacterial flagella because only eukaryotic flagella are used for cell motility. facilitate chemotaxis. facilitate phototaxis. are long, whiplike structures. contain microtubules.

contain microtubules

During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) endospore. cyst. seed. trophozoite. sporozoa.

cyst.

In eukaryotic cells, ribosomes have two locations: scattered in the _____ and on the surface of the _____. cytoplasm, Golgi apparatus nucleus, Golgi apparatus cytoplasm, endoplasmic reticulum nucleus, endoplasmic reticulum

cytoplasm, endoplasmic reticulum

Adulthood and mating of helminths occur in which host? primary host secondary host definitive host transport host Mating takes place in all hosts.

definitive host

In humans, helminths generally infect the digestive tract. urinary tract. nervous system. muscular system. skin.

digestive tract.

Chitin is a chemical component of the cell walls of protozoa. algae. fungi. bacteria. All of the choices are correct.

fungi.

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

Which of the following is not true of the cytoskeleton? structural framework for the cell anchor points for organelles made up of microfilaments made up of microtubules made up of cilia

made up of cilia

Protozoan endoplasm contains ectoplasm. mitochondria. flagella. oral groves. None of the choices is correct.

mitochondria.

Which of the following is not a function of the eukaryote glycocalyx? protection adherence movement reception of chemical signals All of the choices are functions.

movement

Fungal infections are known as ________ and can be acquired from environmental or clinical sources. secondary infections vegetative infections mycoses saprobic infections parasitoses

mycoses

The site for ribosomal RNA synthesis is the ribosome. nucleolus. nucleus. Golgi apparatus. lysosome.

nucleolus.

Which is not a characteristic of fungi? have cell walls photosynthetic include single-celled and filamentous forms heterotrophic nutrition can use a wide variety of nutrients

photosynthetic

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.

Cilia are structures for motility found primarily in: protozoa. algae. fungi. bacteria. All of the choices are correct.

protozoa.