100 points 7 questions!
1. which structure of a paramecium holds a “reserve copy” of all the cell’s genes?
the micronucleus
the zygote
the sporangium
the macronucleus

2. many protists alternate between diploid and haploid stages during their life cycle in a process known as
alternation of generations.
conjugation.
sexual reproduction.
asexual reproduction.

3. how are phytoplankton important to whales?
they are eaten by some whales.
they provide calcium carbonate for whales.
they provide the whales with shelter.
they recycle wastes into materials whales can eat.

4. which of the following events might lead to an algal bloom?
nitrogen-rich fertilizer washes o of fields into the ocean.
oxygen is removed from ocean water by decomposition.
new sewage plants remove more wastes from discharge.
the population of baleen whales increases.

5. when the amoebas of slime molds join, they form structures with many nuclei called
plasmodia.
sporangia.
spores.
zygotes.

6. ciliates get food by
surrounding a cell or particle and taking it inside themselves.
absorbing molecules from the environment through their cell membranes.
forming a plasmodium in order to get food.
sweeping food particles into their gullet.

7. which of the following protists gets nutrients mainly by absorbing molecules from other organisms through their cell walls and cell membranes?
amoebas
water molds
ciliates
slime molds