Biology 103 Exam 2

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For The Biology Test On Monday ! 

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Which metabolic category best describes Bacteria that act as decomposers? 
 
Chemohetrotrophy
In a symbiotic relationship between organisms of significantly different sizes, the larger organism is called the _, and the smaller organism is called the_
 
Host; Symbiont
How are Bacteria and Archaea similar
 
They both have circular chromosomes 
How are Bacteria and Eukarya similar 
 
They both have unbranched hydrocarbons in their cell membranes 
How are Archaea similar to Eukaryotes? 
 
they both have histone proteins associated with their DNA 
Which of the following is a structure that permits bacterial conjugation to occur
 
Sex pilus
Not present in all bacteria, this cell covering enables cells that possess it to resist the defenses of host organisms
 
Capsule 
which of the following requires ATP to function, and permits some species to respond to taxes (plural or taxis?) 
 
Flagellum 
Whats the differences between a gram-negative and a Gram-positive bacteria? 
 
Gram-negative: peptidogylcan layer between an outer and inner membraneGram-Positive: only the inner membrane and peptidoglycan layer
Which two structres play a direct roles in permitting bacteria to adhere to each other, or to other surfaces
 
1: Capsules 3: fimbriae
Which of the following is the term used to identify the process where genetic material is transferred between bacterial cells via pili? 
 
Conjucation
Which of the following is the term used to identify the process ofthe movement of genes between bacteria by bacteriophages? 
 
transduction 
In a moss, most of the plants that we see are_ and in a fern the most dominant stage is the_
 
Gametophytes, sporophytes 
Which of the following is the term used to identify the process in which a prokaryotic cell can take up and incorporate foreign DNA from the surrounding environment 
 
Transformation 
The_ Represents the sporophyte generation of a conifer, and the_produces gametophytes
 
Tree..Cone 
The angiosperm plant we see represents the _ generation, and the flower produces_. 
 
Sporophyte...Gametophytes 
angiosperms disperse their seeds by producing
 
All of the choices are correct 
Fruits, vegetables, corn, rice, and wheat are all examples of 
 
angiosperms 
plants and their pollinators evolve in response to each other's changes in a process called 
 
coevolution 
Fungi are found associated with the earliest plant fossils. Which of the following is a way in which fungi may have helped plants become terrestrial? 
 
By forming mycorrhizal associations and helping early plants to extract mineral nutrients from hostile soils 
How does the sperm of an angiosperm reach the egg? 
 
via the pollen tube that grows through the carpel tissues from the pollen grain deposited on the stigma 
which of the following is a physical barrier preventing the glow of water to xylem via cell walls 
 
Casparian strip 
a hot, a dry summer will reduce crop yields in part because..
 
carb dioxide uptake and photosynthesis are slowed because the stoma close more frequently to prevent excessive cater loss. 
Under which of the following weather conditions would transpiration be most rapid 
 
hot, dry weather 
in general, we can say that fluids are 
 
pushed along in phloem sap and pulled along in xylem sap
An example of an organism that parasitizes a host plant is 
 
mistletoe 
What prevents a seed released in the fall from germinating immediately
 
abscisic acid 
At the end of the growing season you have some green tomates that you want to pick and riped in the house. to ripen them as quicly as possble, you should 
 
Place them in a sealed plastic bag with a ripe banana 
Which of the following is the primary adaptive advantage of temperate-climate, broad-leaved tress that their leaves for the winter? 
 
There is not enough sunlight for efficient photosynthesis during a temerate-latitude winter 
In many grocery stores, fresh fruits are sold prebagged in plastic bags dotted with holes. the main fu of the hoes is to 
 
facilitate diffusion of ethylene away from the fruit 
Experimental plants tat we sent up the space shuttle missions did not exhibit all their normal tropisms. Which of the following responses would you expect a lpant in a space shuttle not to exhibit
 
Gravitropism 
A plant that responds to touch with a change in growth movement is exhibiting 
 
thigmotropism 
which of the following process underlies the thigmotropic behavior of a green-been tendril
 
extra growth of cells on the side opposite to an object that is contacting the tendril 
a plants first line of defense against infection is 
 
it's epidermis 
which of these is a synapomorphy for eukarya
 
A nucleus 
Whats the difference between mitosis and binary fission 
 
Chromosomes are attached to and separated by elements of the cytoskeleton in mitosis, whie chromosomes are attached to and sperated by movement of the cell membrane in binary fission 
Whats one advantae to being eukaryotic rather than prokaryotic 
 
the presence of organelles allows the sequestration of different chemical reactions 
what's one advantage to being prokaryotic rather than eukaryotic 
 
Prokaryotic cells can divide more quickly than eukaryotic ones 
what is the most likely orgin of the eukaryotic nucleus
 
Infolding of the cell membrane to surround the DNA 
what is is the most likely orgin of the eukaryotic mitochondrion
 
Engulfment of a proteobacterium that was not digested 
what is the most likely orgin of the eukaryotic chloroplast 
 
engulfment of a cyanobacterium thatwas not digested 
which phase of the life cycle is multicellular in gametic meisois
 
diploid 
which phase of the life cycles is multicellular in zygotic meiosis 
 
Haploid 
Which phase of the life cycle is multicellular in sporic meiosis 
 
Both phases are clearly multicellular 
What is the product of meiosis in gametic meiosis 
 
Gametes 
What is the product of meiosis in zygotic meiosis 
 
spores 
what is the product of meiosis in sporic meiosis 
 
spores 
which of the following is limited to Apusozoa 
 
tough organic theca underlying the dorsal surface 
The strongest evidence for the endosymbiotic origin of eukaryotic organelles is the similarity between extant prokaryotes and which of the following?
 
Mitochondria and chloroplasts 
Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?
 
cyanobacteria 
Thread like pseudopods that can perform phagocytosis are generally charactersistic of which group
 
Radiolarians and forams 
A snail-like, coiled, porous test (shell) of calcium carbonate is characteristic of which group? 
 
Foraminiferans 
Which photostynthetic Rhizarians form a net and also feed on bacteria 
 
Chlorarachnea 
Which rhizarians are surrounded by a test with an opening at one end for psedupods 
 
Euglypids 
Which Rhizarians are single cells with many nuclei, and can reach diameters of 20-25 cm? 
 
xenophyophores 
Which one of the following is not a characteristic or diplomonads 
 
Primarily an aerobic lifestyle 
Which of the following cause African sleeping sickness 
 
Trypanosoma 
Which of the following statements about euglenozoans is false
 
Giardia, a parasite that lives in teh intestine of mammals, is a euglenozoan 
What is one synapomorphy of the Alveotlata 
 
Cortical alveoli 
Which of the following has members that are bioluminecent 
 
Dinoflagellata 
Which of the following is characterized by ejectosomes 
 
Cryptophyta 
Which of the following contains the organisms that causes late blight potatoes? 
 
Oomycota 
Which of the following has members that secrete a silica containing frustule 
 
diatoms 
PLasmodium, the organsism that caues malaria is a(n) 
 
Apicomplexan 
Which of the following groups include organisms that are a key source of food in all aquatic environments and whose folillized forms are used as a filter and as a grinding and polished agent? 
 
Diatoms 
Which one of the following groups are large multicellular organisms deliberately consumed by humans? 
 
brown algae 
The most recent common ancestor of all land plants was probably similar to modern-day members of which group? 
 
Charophytes 
The following are common to both charophytes and land plants except 
 
lignin 
plant spores are produced directly by 
 
sporophytes 
Each of the following is a general characteristic of bryophtes excerpt 
 
vascular tissue 
the following characteristics all helped seedless plants become better adapted to land except 
 
a dominant gametophyte 
which of the following types of plants would not yet have been evolved in the forests that became coal deposits 
 
pine trees 
if a fern gametophyte is a hermaphrodite, then it
 
belongs to a species that is homosporous 
Bryophtes never formed forests because 
 
the lack lignified vascular tissue
In which of the following taxa does the mature sporophyt depend completely on the gametophyte for nutrition 
 
bryphote