Look at the figure. Approximately how many hours of sunlight should these plants receive each day?
About 16 hours
100
During photosynthesis, energy from the sun transforms molecules of water and carbon dioxide into molecules of
glucose
100
What 3 components make up DNA
phosphate group, nitrogen base, 5 carbon sugar
100
The diagram below represents undisturbed rock strata in a given region. A representative fossil of an organism is illustrated in each layer. Who is most primative between these representative organisms?
A
100
What characteristic do viruses lack to make them nonliving instead of living?
Viruses only reproduce by infecting cells and using the cell’s machinery to reproduce and assemble new viral particles.
200
What type of species would be most likely found in the area labeled D in the Figure?
decomposers that feed on dead organisms, low light or low oxygen
200
Terrestrial plants have stomata on the surface of their leaves. A single stoma is surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma. What enters through the stomata (gases, water or energy)?
gases for photosynthesis
200
Gerald and Mary are married and have two children, one son and one daughter. The children have different hair color and eye color. Why is sexual reproduction help explain the differences?
Sexual reproduction produces an egg with a unique genetic (variation) makeup
200
Which 2 organisms are most closely related?
ferret and cat
200
As food travels through the digestive system, it is exposed to a variety of pH levels. The
stomach has a pH of 2 due to the presence of hydrochloric acid (HCl), and the small intestine
has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests
proteins in the stomach. Which of the following most likely happens to pepsin as it enters the
small intestine?
it becomes inactive
300
Some deep-sea bacteria live near submerged volcanoes and make their own food using energy derived from minerals coming from the volcanoes. These bacteria would be classified as
autotrophic, because they make their own food
300
Photosynthesis is an energy-requiring, or endergonic, reaction. What happened to the energy after the reaction is complete? Is the energy stored, released, lost as heat?
Stored in the glucose molecule
300
While genetic engineering has positive benefits, there are also concerns associated with widespread use of genetic engineering in agriculture. If many farmers begin to plant more genetically modified crops that have an increased tolerance to insects, what may happen to the genetic diversity?
decrease
300
At what level does the cat diverge from the whale?
order
300
A fertilized egg undergoes several stages before it is successfully implanted. In which of the following structures of the female human reproductive system is the blastocyst implanted during normal human development?
UTERUS
400
. Salt water is an abundant resource but unusable for irrigation and drinking. As demands on
freshwater sources increase, the use of desalination processes to remove salt from ocean water is
increasing. A concern of desalinating water is the large amounts of recovered salts that are
returned to the ocean. Which of the following describes the most likely impact of desalination on
the surrounding ocean environment?
Alteration in ocean salt levels would cause loss of species and unbalanced populations in marine food webs.
400
What are the products of cellular respiration ( and reactants of photosynthesis)?
carbon dioxide and water
400
During the warm temperatures of summer, the arctic fox produces enzymes that cause its fur to become reddish brown. During the cold temperatures of winter, these enzymes do not function. As a result, the fox has a white coat that blends into the snowy background. This change in fur color shows that
a. random alteration of DNA can occur on certain chromosomes.
b. the expression of certain genes is affected by temperature.
c. mutations can be caused by temperature extremes.
d. the genes of a fox are made of unstable DNA.
What is B
400
Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased. Which of the following describes a necessary condition for these changes in the finch populations to occur?
a. fewer mutations
b. limited food resources
c. limited beak variations
d. overproduction of offspring
B
400
A symbiotic relationship where one member benefits and the other is harmed is called
parasitism
500
Where do producers get their energy?
SUN
500
Cellular respiration takes place in the _____________ where ___________ is released to the cell
mitochondira, energy
500
Normal mitotic cell division results in each daughter cell having
identical make up of parent, same number and kinds of chromosomes
500
The scientific theory of evolution is supported by different types of evidence. The diagrams below show the skeletons of two different animal species. How does comparing the skeletons of these animals provide support for the scientific theory of evolution?
it shows possible common ancestry
500
The number of pythons found throughout Everglades National Park has increased in recent years. These huge snakes are not native to Florida and are believed to have been released into the wild by pet owners. Wildlife biologists have initiated attempts to capture and remove these pythons. Which statement best explains the biologists’ reason for removing these pythons from
the Everglades?
a. The pythons could upset the territorial boundaries of native organisms.
b. The pythons could adapt to overcome diseases common to native snakes.
c. The pythons could prey on native organisms and cause native populations to decline.
d. The pythons could begin to interbreed with native snakes and produce a more successful species.