bio 41 exam #1

Plants use the process of photosynthesis to convert the energy in sunlight to chemical energy in the form of sugar. While doing so, they consume carbon dioxide and water and release oxygen. Explain how this process functions in both the cycling of chemical nutrients and the flow of energy through an ecosystem.

Photosynthesis cycles nutrients by converting the carbon in carbon-dioxide to sugar which is then consumed by other organisms. The oxygen in water is released as oxygen gas. Photosynthesis contributes to energy flow by converting sunlight to chemical energy, also consumed by other organisms, and producing heat.

match the following terms to the phrase that best describes it C. Hypothesis

a testable idea

Match it's description to it's most likely domain and or kingdom a.) a foot tall organism capable of reproducing it's own food from sunlight

a.) eukarya/plantae

match the following terms to the phrase that best describes it d. biosphere

all life supporting environments on earth

place the following levels of biological organization In order from smallest to largest

atom, molecule, cell, tissue, organ, organism, population, ecosystem, biosphere;cell

Match it's description to it's most likely domain and or kingdom c.) an inch tall organism growing on the forest floor that consumes material from dead leaves.

c.)eukarya/fungi

which of the following is not a characteristic of a living organism ?

composed of multiple cells

Match it's description to it's most likely domain and or kingdom d.) a thimble sized organism that feeds on algae growing in the pond

d.) eukarya/ Animalia

match the following terms to the phrase that best describes it b.) evolution

descent with modification

_____ is the core idea that unifies all areas of biology.

evolution

which of the following statement best distinguishes hypothesis from theories in science?

hypothesis usually are narrow and scope; theories have broad explanatory power.

which of the following statements best describes the logic of the scientific method?

if my hypothesis is correct I can expect certain test results.

how does natural selection pause a population to become adaptive to it's environment overtime ?

on average those individuals with heritable traits best suited to the local environment produce the greatest number of offspring that survive and reproduce. This increases the frequency to those traits in the population overtime. the result is the accumulation of evolutionary adaptations.

Match it's description to it's most likely domain and or kingdom b.) a microscopic simple nucleus free organism found living in a river bed

b.) bacteria

match the following terms to the phrase that best describes it a.) natural selection

unequal reproductive success