Extra 1-25 Study Questions

An organism that feeds on the cell contents, tissues or body fluids of another species (the host) while in or on the host organism, is known as
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An organism that feeds on the cell contents, tissues or body fluids of another species (the host) while in or on the host organism, is known as
a parasite
Certain species of acacia trees in Central and South America have hollow thorns that house stinging ants, which attack anything that touches the tree. The ants feed on nutrients produced by the acacias. This is an example of _____.
mutualism
A population that grows rapidly at first and then levels off at carrying capacity can be modeled _____.
by a logistic equation
In a tide pool, 15 species of invertebrates were reduced to eight after one species was removed. The species removed was likely a
keystone species.
Which of the following terms is used by ecologists to describe the community interaction where one organism makes the environment more suitable for another organism?
facilitation
The principle of competitive exclusion states that
two species that have exactly the same niche cannot coexist in a community.
The main cause of the increase in the amount of CO2 in Earth's atmosphere over the past 150 years is
the burning of larger amounts of wood and fossil fuels.
entropy
is a measure of disorder or randomness
A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry, is known as
a hybrid zone
Microfilaments
all of these answers are correct
________________ is an interaction in which one species has a positive effect on the survival and reproduction of another species without the intimate association of a symbiosisfacilitationIf your muscles used alcohol fermentation instead of lactic acid fermentation, which of the following might occur?You might become drunk during an intense workout.The reactions of the Calvin cycle can take placein wither the dark or the lightDifferent cells may have different combinations of transcriptional activators becauseall of these answers are correctIn a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish (in other words, they locate their prey by sight). If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following is least likely to be observed in the algae-eater population over the course of many generations?selection for larger female algae-eaters, bearing broods composed of more, and larger, youngMovement of organelles within the cell takes place viacytoskeleton and motor protiensBiological diversity, or "biodiversity", includes which of the followingall of these answers are correctCells can be described as having a cytoskeleton of internal structures that contribute to the shape, organization and movement of the cell. Which of the following is a part of the cytoskeleton?microfilaments________________ is an interaction in which one species has a positive effect on the survival and reproduction of another species without the intimate association of a symbiosis.facilitationA peptide has the sequence NH2-phe-pro-lys-gly-phe-pro-COOH. Which of the following sequences in the coding strand of the DNA would code for this peptide?5' TTT-CCC-AAA-GGG-TTT-CCC 3'In the cells of some organisms, mitosis occurs without cytokinesis. This will result incells with more than one nucleus.Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?Proto-oncogenes normally help regulate cell division.