1st Semester Exam

A population whose birth and death rates are equal.

A population experiencing arithmetic growth

A population experiencing exponential growth.

Best describes the world population trend over the last 500 years

A = Desert Biome C = Rain Forest Biome

The variable that is manipulated (or changed on purpose) by the experimenter is called the independent variable

All of the following serve to limit the population growth in a population of field mice food sources increased predation disease snakes water sources

A hypothesis that has been accepted by scientists after it has been subjected to proper testing and validation is said to be a theory. Usually, the first step in solving a scientific problem is to identify the problem. When conducting an experiment using the scientific method the results reports data that has not been interpreted.

Niche - An organisms job: all the strategies and adaptations it uses in its environment Carrying capacity - The maximum population size that an ecosystem can support over an extended period of time Limiting factors - Conditions in the environment that restrict a population size Population - A group of organisms, all the same species, living together in the same place at the same time Competition - The ecological interaction between organisms, where both organisms require the same resources that is in limited supply

The locations of biomes is determined by regional climate Tundra and desert biomes are the most similar with the regard to rainfall If the tropical rain forest annually receives 180 cm of rain, how many cm of rain does this biome receive in May if every month gets equal amounts of rain? 15 cm The tundra is the coldest biome of the Earth. The most important factors determining the climate of a location are temperature and moisture.

The following correctly ranks the biomes in order from lowest to highest latitude; Rainforest deciduous forest coniferous forest tundra

A = Tropical Rainforest B = Tundra

Primary consumer Secondary consumer Tertiary consumer Decomposer Producer

Primary consumer Secondary consumer Tertiary consumer Decomposer Producer

If the fox population became extinct all of the following would increase; Blue jay Turtle Sea otter Mallard Beaver

If 10,000 units of energy are available to the grasses, approximately how much energy is available to the mice? 1,000 units If a population of 1,000 gerbils experiences 150 births and 50 deaths during one year, what would be the percent growth rate? 150 - 50 X 100 1,000 10%

What is the phenotype of the lower left hand box in the following monohybrid cross? The cross was between two heterozygous plants, the dominate petal color is blue and the recessive color is pink. Blue

The basic structure of the DNA molecule is a double helix