A gene contains the sequence CGCATACGGTAC that results in the amino acid sequenc

Question

A gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arg-tyr. A mutation in this gene has a G inserted after the second C in the strand.

How will this mutation affect the phenotype?
This will not affect the phenotype because only the second amino acid is different from the original protein.
This will affect the phenotype because although most of the protein will be identical, the first amino acid will be different.
This will affect the phenotype because all of the amino acids after the first one will be different from the original protein.
This will not affect the phenotype because the protein will be identical to the original protein.

An ecologist collects and counts all individuals of one species of hair follicle mite collected from the hair follicles of one human subject.

Which term correctly identifies this level of ecological organization?

Ecosystem
Population
Biosphere
Community

Lakes and ponds include distinct interacting sets of species and well defined and isolated abiotic factors that influence those species.

Which term describes the level of ecological organization of a lake or pond?

Community
Ecosystem
Biosphere
Population

A wildlife biologist is studying the factors that influence the reproductive success of the lions that inhabit the shrublands of the Serengeti and their prey, zebras. The biologist will study how these species interact with each other, as well as how physical factors (e.g., temperature, water availability) may affect the reproductive success of lions and zebras.

Which level of ecological organization is the biologist studying?

Population
Ecosystem
Community
Biosphere

The population of rabbit was observed to rise and fall over a period of 8 to 10 years. The wolf population in the same area followed the same rate of increase and decrease as the rabbit population approximately two years afterward.

What is the relationship between the wolf and the rabbit?

Mutualism
Competition
Symbiosis
Predator-prey

A giraffe eats from an acacia tree.

What type of interaction is this an example of?

Parasitism
Herbivory
Mutualism
Competition

Caribou in the arctic tundra search for food by digging in the snow. Once the caribou is done searching for food, arctic foxes will go to the recently dug hole and use the hole to search for their own food.

Which interaction is occurring between these species?

Commensalism
Competition
Predation
Parasitism

Caribou and reindeer are both herbivores whose diets consist of lichens and grasses.

Which interaction is occurring between the caribou and the reindeer?

Parasitism
Competition
Commensalism
Mutualism

Which organism in this food web is a detritivore?

Fish
Lobster
Seal
Polar bear

In a pond ecosystem, mosquito larvae feed on photosynthetic algae. Other larvae, such as dragonfly larvae, feed on the mosquito larvae. The dragonfly larvae are, in turn, consumed by fish, which can be preyed upon by raccoons.

Which organism is a primary consumer in this ecosystem?

Fish
Dragonfly larvae
Mosquito larvae
Algae

Which organism in this food web is a decomposer?

Damselfly
Algae
Frog
Bacteria

What plays multiple roles in the cycling of nitrogen, including converting nitrogen gas into a form of nitrogen usable by plants?

Lightning
Fungi
Bacteria
Animals

Coral reefs are built from the calcium carbonate secretions of coral polyps, and the resulting structures provide shelter and homes for a diverse group of organisms. However, many of these reefs are decreasing in size, due to the effects of climate change, and the animals that rely on them are in danger of extinction.

Which activity would have a negative impact on biodiversity in coral reefs?

Increasing the use of renewable energy sources
Increasing use of sustainable technologies
Developing technologies that would reduce the amount of pollutants produced
Increasing use of fossil fuels

Explanation / Answer

This will affect the phenotype because all of the amino acids after the first one will be different from the original protein.

Population

Ecosystem

Biosphere

Predator- prey

Herbivory

Commensalism

Competition

Mosquito larva

Bacteria

Bacteria

Increasing use of fossil fuel

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