keywords:
Bookmark and Share



Front Back
Protists:
Are eukaryotes
Malaria is caused by Plasmodium falciparum, a non-motile protist that contains a cluster of microtubules at one end of the cell. Once injected into the blood stream, these microtubules are used to attach to red blood cells. Malaria is transmitted by:
The bite of a mosquito
The largest algae are:
Kelp
The engulfment of food particles by a cell is:
Phagocytosis
Some protozoa move by false feet called:
Pseudopodia
The microscopic food that supports the ocean's vast food webs is:
Plankton
Cytoplasmic extensions by which some protozoa move are:
Pseudopodia
A pregnant woman was told by her doctor that while she is pregnant she might want to let someone else care for her cats so she would not contract toxoplasmosis through which mechanism?
Exposure to infected cat feces
Mitochondria in algae are thought to have arisen from which source?
Aerobic bacteria
DNA sequence evidence suggests that plants, fungi, and animals arose from different lineages of unicellular protists. This suggests which of the following?
Protists evolved before the other three kingdoms
Chlamydomonas is multicellular, produces motile haploid sperm, and is photosynthetic. Chlamydomonas is which of the following?
A green algae
Euglena have chloroplasts and can perform phagocytosis. Euglena would be considered which of the following?
Autotrophs and heterotrophs
Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is which of the following?
A heterotroph
African sleeping sickness is caused by Trypanosoma brucei, a unicellular flagellated protist infects red blood cells after being injected into the blood stream. Trypanosoma brucei is which of the following?
A protozoa
Malaria is caused by Plasmodium falciparum, a non-motile protist that contains a cluster of microtubules at one end of the cell. Once injected into the blood stream, these microtubules are used to attach to red blood cells. Plasmodium falciparum is which of the following?
An apicomplexan
In malaria, Plasmodium falciparum grow inside of human cells. As such they are which of the following?
Heterotrophs
How might global climate change affect the distribution of malaria?
By expanding the range of the mosquito
The white cliffs of Dover are composed mostly of foraminiferans shells. These organisms move by pseudopodia and feed by phagocytosis. Foraminiferans are an example of which of the following?
A protozoa
Malaria is caused by Plasmodium falciparum, a non-motile protist that contains a cluster of microtubules at one end of the cell. Once injected into the blood stream, these microtubules are used to attach to red blood cells. In areas of the world where malaria is endemic people have a relatively high incidence of the allele for:
Sickle cell
Diatoms are a type of algae, but with a hard silica shell. Which of the following structures would you expect to find directly underneath the silica shell?
A cell wall
Arabidopsis thaliana is a small angiosperm related to mustard. It is commonly used in plant research experiments. In one such experiment, an antifreeze protein from a species of bacteria was inserted into the genome of Arabidopsis thaliana, and the plants exposed to freezing temperatures. Plants without the antifreeze protein had 90% mortality, while those with the antifreeze protein only had 20% mortality. If the bacterial protein functions in Arabidopsis thaliana which conclusion is supported?
Arabidopsis thaliana and the bacteria have similar genetic material
Based on the theory of endosymbiosis, which of the following would you expect to find in a chloroplast?
DNA
As more CO2 is released into the atmosphere, which of the following would you predict may happen to S. yellowstonensis diatoms in Yellowstone Lake?
Their shells would get thicker
Which of the following is a difference between a diatom and a lodgepole pine?
Diatoms are single-celled
Which of the following is not a characteristic of all plants?
They are heterotrophs
The organelle that contains chlorophyll a and carries out photosynthesis in plants is the:
Chloroplast
The longest wavelength of visible sunlight is:
Red
The part of the plant that absorbs water and nutrients is the:
Root
The part of the plant that allows for the exchange of carbon dioxide and oxygen is the:
Stomata
The part of the plant that is a waxy coating that minimizes water loss from leaves is the:
Cuticle
The two types of vascular tissue in most plants are:
Xylem and phloem
The substance that strengthens and supports cell walls allowing plants to grow tall and upright is:
Lignin
Flowers:
Produce both pollen and egg cells
The two classes that make up the angiosperms are:
Monocotyledons and dicotyledons
Some evidence that algae are the closest relative to plants is that they both:
a. Have chloroplasts
b. Contain chlorophyll a
c. Have cellulose rich cell walls
d. Use starch as a nutrient reserve
*e. All are correct
The first land plants were bryophytes, which then branched into ferns, gymnosperms, and finally angiosperms. What advantage did ferns have over bryophytes?
Ferns have a vascular system, this allowed them to grow taller
Fossil evidence places the origin of angiosperms in the early Cretaceous period, at least 130 million years ago. By 100 million years ago, all of today's major lineages of angiosperms were in place. Angiosperms make up 95% of all modern plant species. Which of the following may help explain the rapid success of angiosperms?
Coevolution with animals helped spread pollen and seeds
A gaseous hormone produced by plants that helps control fruit ripening is:
Ethylene
Dictyostelium discoideum is an unusual organism, one that straddles the boundary between the unicellular and the multicellular. Its feeding phase consists of individual amoeba-like cells that move independently, feeding on bacteria by phagocytosis. When the food runs out, cells begin to aggregate into a multicelled structure that migrates toward light. The cells differentiate into a base, stalk, and spores; only the spores survive to colonize a new habitat. Dictyostelium discoideum is which of the following?
A heterotroph
Many fern gametophytes are hermaphrodytes, meaning they can produce both sperm and egg. Why is this necessary for a fern, but not for an angiosperm?
If a spore colonized a new habitat alone, it could still reproduce
A cotyledon is:
The first leaf structure to arise in the embryo of an angiosperm
In dry weather plants reduce water loss by closing their:
Stomata
In alternation of generations, two haploid gametes fuse in fertilization to form a ____ zygote.
Diploid
Arabidopsis thaliana is a small angiosperm related to mustard. The fact that it has 139 genes that correspond to disease-causing genes in humans suggests which of the following?
Humans and Arabidopsis thaliana share a common ancestor
Arabidopsis thaliana is a small angiosperm related to mustard. It is commonly used in plant research experiments. In one such experiment, an antifreeze protein from a species of bacteria was inserted into the genome of Arabidopsis thaliana, and the plants exposed to freezing temperatures. Plants without the antifreeze protein had 90% mortality, while those with the antifreeze protein only had 20% mortality. Arabidopsis thaliana is not a crop plant, why would scientists perform this experiment in this plant?
Because it is an easy to grow model organism
In suggesting alternative hypotheses to explain figure 18.18, your lab partner states that perhaps mosses didn't evolve until recently, which is why they increase after herbs and shrubs. Which of the following would be the best response to your lab partner?
Mosses were actually the first land plants to appear
Grasses being replaced with shrubs over time is an example of which of the following?
Succession
The influenza viruses that infect man usually are derived from a type that could also infect:
Birds and pigs
Viruses:
Are smaller than cells
A capsid is:
A protein coat of a virus
x of y cards Next > >|