WorksheetsPractice Two #22-43
Total questions: 19
Worksheet time: 10mins
An Adirondack Mountain ecosystem is represented below. An abiotic factor in this ecosystem is the
pH of the soil where the trees grow
number of deer of reproductive age
different species of grass present
balance between predators and prey
A partial food chain is represented below. Grasses → Field mice → Owls A student observed owls hunting mice in a field. Some chemicals from the waste products of the owls were made available to be absorbed by the roots of the grasses due to the action of
autotrophs
carnivores
herbivores
decomposers
Which two terms are opposite processes?
autotrophic nutrition and photosynthesis
asexual reproduction and cloning
digestion and synthesis
natural selection and evolution
Which human activity would most likely deplete finite resources?
recycling of aluminum and paper
protection of wildlife habitats
uncontrolled population growth
regulations that reduce industrial pollution
Macaques are a species of monkey. They normally reproduce sexually, but, in January 2018, scientists cloned two baby macaques from a single body cell. These monkeys are genetically
identical to each other, but different from the donor of the body cell
different from each other, but identical to the donor of the body cell
identical to each other and to the donor of the body cell
different from each other and from the donor of the body cell
Which event would most likely be the immediate result of significantly lowering the oxygen concentration in a freshwater lake?
a decrease in the number of fish
an increase in the number of plants
an increase in biodiversity
a decrease in water temperature
A species of predatory wasp is introduced to control an insect pest. A possible negative consequence of this action is that the new predatory wasp may
limit the population of the insect pest
prey on beneficial insects
disrupt mineral availability in the ecosystem
cause an increase in pesticide-resistant plants
Based on the information given, which statement concerning the eating of fish and seafood is most accurate?
People should avoid eating seafood because the negative effects of the mercury in seafood are far worse than any benefits that eating seafood may provide. Even shrimp and tilapia contain high levels of mercury.
The normal development of a baby’s nervous system requires that the mother be more concerned with eating enough seafood and less concerned with the side effects of higher levels of mercury on the child.
Eating certain selected species of seafood can provide health benefits without the negative effects of high mercury intake.
It is important that pregnant women eat a regular diet of seafood, including swordfish, halibut, and cod.
Which statement is best supported by the information provided about the levels of mercury present in seafood?
Human activities do not affect mercury levels in fish species.
Future generations can be affected by choices made by past and present generations.
Fish that consume plants have the highest levels of mercury compounds.
If people stop eating fish, then the mercury levels in fish will decrease.
Grasshopper mice feed on bark scorpions, but, unlike other mice, grasshopper mice are unaffected by the painful venom of the scorpion. Scientists have determined that these mice have one amino acid difference in their pain receptors, which causes the receptor to function differently and prevents feeling the pain associated with the scorpion venom. This change in protein function was originally caused by a change in
molecular bases located in the nucleus
fat molecules in the cell membrane
the amino acids in the DNA
the genes located in the protein
Certain organisms living deep in the ocean can obtain energy from inorganic compounds that flow out of volcanic vents. They can use this energy to synthesize energy-rich organic compounds. Which row in the chart below correctly pairs an organism that performs a similar function in land environments with the process involved?
small mammal respiration
grasses photosynthesis
small mammal photosynthesis
grasses respiration
Scientists are concerned about the decreasing numbers in the populations of Atlantic salmon along the east coast of North America due to overfishing and changes in their breeding environments. Some businesses have developed farm-raised populations of certain varieties of salmon. Large, farm-raised populations have a limited genetic diversity as compared to wild-caught salmon. Which row in the chart below correctly pairs possible effects of fish farming?
Loss of biodiversity among farmed fish - Increased sales of fish, a food source
Increased sales of fish, a food source - Limited genetic diversity in salmon population
Loss of biodiversity in wild fish - Decreased population size
Increased biodiversity - Increased population size
DNA studies have shown that bears and raccoons evolved from a common ancestor about 50 million years ago. Giant pandas evolved from a more recent ancestor that was related to bears. The red panda evolved from a more recent ancestor that was related to raccoons. Which evolutionary tree best represents these sequences of events?
Tree diagram 1
Tree diagram 2
Tree diagram 3
Tree diagram 4
Researchers studying water fleas (tiny organisms that live in fresh water) have noticed that the appearance of the water flea follows a pattern, as seen in the table below. The Effect of Predator Type on Water Flea Appearance Type of predator found in water flea environment: No predator, Stickleback fish, Backswimmer bug Water flea appearance (Not drawn to scale) If all three water fleas are genetically identical, which statement best explains why the three water fleas have different appearances?
Random alterations of genes occur in water fleas when they eat different foods.
Predators in the water flea’s environment cause mutations in the water flea.
Genes are not involved in the appearance of these water fleas.
Water flea gene expression can be influenced by the type of predator present in their environment.
The discovery that humans can inherit mitochondria from their fathers illustrates the concept that
inquiry does not judge the reliability of sources
experiments without controls are not valid
scientific explanations are tentative and subject to change
advancements in technology usually make scientific theories invalid
The most likely explanation for why children who inherited mutated mitochondria suffer fatigue and muscle pain is that their mitochondria fail to
provide the antigens needed to fight the mutated DNA
regulate the transport of nutrients to the muscle cells
synthesize the starch needed by the muscles
release enough energy for cells to function properly
Which statement best describes a likely cause for the changes that might exist in the present python population?
The python species needed cold-tolerant genes, and they appeared in 2010 by rapid mutation.
The freeze event served as a selecting agent, and a higher percentage of the pythons existing today are cold-tolerant.
Many individual pythons were unable to reproduce during the freeze event and did not pass on their cold-tolerant genes.
There was no actual change in the population, and if a similar freeze event occurred again, 40-90% of the snakes would die.
Pythons in their native habitat often eat a large animal and then do not feed again for weeks. In the Florida Everglades, food sources are often small mammals and birds. The current large python population in Florida can be described as a species that
will quickly die out because there are no appropriate food sources in their environment
will develop new digestive organs as needed to succeed in the Florida Everglades
has expanded only because small animals reproduce so quickly that they provide an unlimited food source
has already successfully adapted to an unfamiliar environment through natural selection
Recently, new regulations have been adopted that affect the trapping of fishers. Which action would probably result in an increase in the fisher population?
removing all regulations regarding fisher trapping
increasing the area where fisher trapping is allowed
changing the fisher trapping season from 46 to 30 days
decreasing the cost of the permit needed for fisher trapping
