1-What are autotrophs? What are heterotrophs? organisms that display a single, i
ID: 177912 • Letter: 1
Question
1-What are autotrophs? What are heterotrophs?
organisms that display a single, instictive behavior; organisms that display multiple potential behaviors
organisms that make their own food; organisms that cannot make their own food and must consume other organisms
an enzymatic pathway that requires no energy input; a pathway that requires varying amounts of energy
2-An increase in temperature of the Earth caused by atmospheric trapping of heat is
the greenhouse effect
the biome effect
bioremediation
desertification
the nursery effect
3-Why is “Climate Change” a more accurate description of the increase in Earth’s temperature than “Global Warming”?
it is unclear whether or not warming of the planet is occurring
some portions of the Earth will become colder while others become warmer
the planet is undergoing a decrease in overall temperature
4-What is the potential genetic basis behind the complex behavior of Social Insects?
populations of social insects display tremendous genetic variation
social insects are genetically more like their parents than they are like their siblings
social insects are genetically more like their siblings than they are like their parents
5-What is disruptive selection?
environmental influences that select against change
environmental influences that promote one phenotype versus all others
environmental influences that promote two or more phenotypes versus all others
6-How is extinction related to speciation?
too many species increase the chance of extinction
when a species is fit for an unique environment, if that environment changes, it can go extinct
a successful species will drive all others to extinction
7-What are the five agents of microevolution?
gamete production; mating; fertilization; caring for offspring; formation of herds
photosynthesis; respiration; mitosis; meiosis; fertilization
mutation; gene flow; nonrandom mating; genetic drift; natural selection
8-After a drought, what happened to the average beak size of medium ground finches?
they decreased in size
they remained the same
they increased in size
9-What is Circadian rhythm?
the cell cycle
animal behavior that follows the daily cycle
the life cycle of a species
10-Can we see evolution in progress? What is a good example?
no; evolution takes too long to observe
yes; the presence of human genetic disorders
yes; an increase in black moths following accumulation of soot in London
11-What is altruism?
behavior that benefits the individual despite potential risk to the population
behavior that benefits the population despite potential risk to the individual
behavior that equally benefits the individual and the population
Explanation / Answer
1. Answer: b
Autotrophs are the organisms that prepare their own food material utilizing orgnaic and inorganic nutrients and energy.Plants are autotrophs which prepare ther own food utilizing sun's energy, water and carbondioxide as source of carbon. Heterotrophs cannot make their food hence depend on other organisms.Ex: Animals, humans.
2. Answer: a
Green house effect. The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth, some of it is reflected back to space and the rest is absorbed.
3. Answer; b
In different parts of the world, there have been various weather events that would question global warming. For example, some regions have experienced extremely cold winters, while others have experienced heavy rain, etc.Hence climate change would be more appropriate term to describe increasing Earth's temperature.
4. Answer; c
Social insects share 75% of their genes with their siblings. Whereas we share only 50% of our genes with out brothers or sisters.
5. Answer: c
Disruptive selection occurs when environmental changes favor individuals on either end of the phenotypic spectrum. Two or more extreme individuals are selected against intermediate individuals.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.