Which of the following statements is most accurate concerning the founder effect? A. It increases genetic variation B. It is not an example of genetic drift C. It results when a small population breakers away from a larger one D. It only occurs amongst the amish
Which of the following is not characteristic of marshes? a. shallow water b. frequent floods c. acidic groundwater d. herbaceous plants
At what point is the fetus typically able to survive outside of the mother's body? a. 4 months b. 5 months c. 6 months d. 7 months
Which of the following is NOT true concerning the effects of pollutants on exercise? a. Pollutants can cause dehydration. b. Pollutants can impair respiratory and cardiovascular systems. c. Pollutants usually surround large roads and freeways. d. Pollutant advisory warnings should be ignored.
A closed circle with short lines inside on a topographic map A. Relief B. Depression C. Elevation D. Topographic map E. Contour interval F. Index contour
Which is required for sexual reproduction? mitosis binary fission diploid cell production meiosis mitosis binary fission diploid cell production meiosis
Population growth is limited by density-dependent factors such as _____. predation and disease volcanoes and earthquakes droughts and floods biotic and abiotic factors
Which of these correctly distinguishes mitosis from meiosis? A) Mitosis occurs in germ cells and meiosis occurs in somatic cells. B) Crossing over takes place in mitosis and not in meiotic cell division. C) Meiosis produces four 2N daughter cells; mitosis produces two 2N daughter cells. D) The number of chromosomes remains the same in mitosis and is reduced by half in meiosis.
Lactase and carbonic anhydrase are examples of what type of substance? A. substrate B. reactant C. product D. enzyme
Which is NOT a shared characteristic of all chordates? A ventral, solid nerve cord A notochord Pharyngeal slits
The time from one economic peak to another economic peak (think roller coaster ride) is called the _____. economic cycle Gross Domestic Product net exports
Why did dna technology lead to more use of cladistics?a. it showed that the linnaean system was the most accurate.b. it changed ideas about which animals were closely related.c. it proved that eukaryotes formed from endosymbiosis.d. it showed that there are three domains and six kingdoms?
Which statement best describes the organelles in a cell? (1) All organelles are involved directly with communication between cells. (2) Organelles must work together and their activities must be coordinated. (3) Organelles function only when there is a disruption in homeostasis. (4) Each organelle must function independently of the others in order to maintain homeostasis.
Chlorofluorocarbons may be harming the ozone layer by ____. a. adding more ozone molecules c. destroying ozone molecules b. blocking ultraviolet radiation d. adding carbon dioxide molecules
The appearance of fireflies at dusk is an example of a circadian rhythm because it a. is related to the phase of the moon b. is related to the temperature of the air c. happens daily d. happens seasonally
Which statement is true for chordate nerve cord?. A.It is dorsal and hollow.. B.It is ventral and hollow.. C.It is dorsal and solid.
If the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about
Which adaptation makes bipedalism possible? A.opposable digits B.large brain C.foramen magnum in back of skull D.elvis rotated inward
Matter can recycle through the biosphere because: A) matter is passed out of the body as waste. B) matter is assembled into chemical compounds. C) biological systems do not use up matter, they transform it. D) biological systems use only carbon, oxygen, hydrogen and nitrogen
Drinking alcohol during pregnancy negatively impacts development of the fetus because: the mother’s body is unable to process alcohol. alcohol crosses the barrier that the placenta creates. the mother can no longer produce primary oocytes. alcohol causes the mother to have facial distortions.
A parking lot paved with asphalt is abandoned. Describe the parking lot 5 years after its abandonment. A. the asphalt remains intact but is buried under dirt and leaves B. large patches of asphalt remain bur small plants grow in many cracks in the asphalt C. the asphalt is gone and a forest covered the area. D. the asphalt remains intact but is covered with logs and dead tree branches.
What is true about dissimilar organisms such as a cow and a yeast? A. They are not related at all. B. Their degree of relatedness cannot be evaluated. C. Their degree of relatedness can be estimated from their genes. D. They can interbreed and thus are the same species.