quiz chapter 28 bio 2

Protists are organized into the following six groups: Excavata, Chromalveolata, Rhizaria, Archaeplastida, Amoebozoa, and Ophisthokonta. What are these groups called?

supergroups

Which feature best distinguishes protists from other eukaryotes?

they are eukaryote most closely related to prokaryotes

Movement in amoeba is carried out using structures called ____________ .

psuedopods

Select all the statements below that are true about brown algae.

B. Brown algae have haplodiplontic lifecycles C. Kelp has multicellular haploid and diploid stages in its lifecycle D. Brown algae provide food and shelter for many types of organisms.

The concept of endosymbiosis is widely accepted. What kind of relationship is it?

Both organisms in the partnership benefit

What domain do protists belong to?

Eukarya

Complete the sentences about kinetoplastid characteristics with the correct terms.

Unlike euglenoids, kinetoplastids are __parasites__________ . Kinetoplastids are unique because they have a single mitochondrion in each cell. The trypanosome is commonly associated with African sleeping sickness. Trypanosomes evade the body's defenses because they can readily change the antigens on their surface.

Place the items into the appropriate category of a characteristic of cellular slime molds, plasmodial slime molds, or both types of slime molds.

cellular: separate amoeba, form a slug, communicate with camp plasmodial: multinucleated, spores, sporangium, no centrioles both: once considered fungi

What statement best explains why the Euglenozoa cannot be classified as either plant-like or animal-like protists?

certain types are heterotrophic while others are autotrophic

The fresh water surrounding a protist would be considered _____________ to the protist cell.

hypotonic

Which statement best explains one outcome of endosymbiosis?

it is responsible for mitochondria

Why can agricultural runoff kill fish in coastal areas that are potentially hundreds of miles from the fields?

Excess fertilizer can cause dinoflagellate blooms which produce toxins.

Which of the following is true for all protists?

Protists are eukaryotic organisms that are not plants, animals, or fungi.

What is one common use of red algae by humans?

Red algae polysaccharides are used in ice cream.

Which statement best describes the composition of diatom shells?

They are like small boxes with lids composed of silica.

Place the characteristics into the appropriate category of a Property of Amoeba Movement and Not a Property of Amoeba Movement.

amoeba movement: pseudopods, flowing projections, actin and myosin, not a property: cilia, amorphous, undulating membrane

Long, thin locomotion structures called ____________ can be contracted and extended.

axopodia

Protists called ____________ algae are examples of Stramenopila.

brown

The members of ___________ include dinoflagellates, apicomplexans, and ciliates.

chromalveolata

An olympic rowing team consisting of 8 oarsmen would be analogous to movement by what?

cilia

Tiny hairlike structures called ____________ are characteristic of certain protists.

cilia

The ____________ is an example of a unicellular Stramenopila.

diatom

Place the descriptions into the appropriate category of a characteristic of Diatom Shells, Foraminifera Shells, or Both Shell Types.

diatom shells: opaline silica, box-like two halves foraminifera shells: calcium carbonate, often multichambered both shell types: rigid, pores

Internal membranes are typical of

eukaryotes

A biologist uses a time machine to collect living material from 2 different time periods. Sample A is 3 billion years old and sample B is 1.5 billion years old. How would these samples differ?

eukaryotic organisms would be absent from sample a

Eukaryotes and prokaryotes both use ____________ for mobility

flagella

Some protists use a long whip-like structures called ____________ to swim.

flagella

Stramenopila refers to fine hairs found on the ____________ .

flagella

A eukaryotic cell's ____________ evolved through endosymbiosis.

mitochondria

The chromosomes of eukaryotic cells are located in the

nucleus

Select all the true statements concerning eukaryotic cells.

only eukaryotic cells contain chloroplasts If a cell has its chromosome in a separate bubble of membrane it would be eukaryotic.

Eukaryotic cells are compartmentalized into ____________ , which is not characteristic of prokaryotes.

organelles

Place the items into the appropriate category of phototroph or phagotroph.

phototroph: autotrophic, algae, photosynthesis phagotroph: food vacuoles, ingest whole food

Red algae possess

phycocyanin.

Amoeba move by the formation of what type of cellular extension?

pseudopods

The unique double shells of diatoms are made of

silica

Which statement best explains the evolutionary significance of the choanoflagellates?

they are the closest relatives to animals

Chlorophytes are considered close relatives of land plants because (Check all that apply)

they both contain chlorophyll a. they both contain chlorophyll b. they both contain carotenoids. some chlorophytes have a haplodiplontic life cycle like plants.

A pathogenic member of the Stramenopila is the

water mold