Biology Semester 1

A series of steps in which organisms transfer energy by eating and being eaten.

 No two species can occupy exactly the same niche in exactly the same habitat at the same time.

The main energy source for living things.

Which is not part of the cell theory?

Electrons have a

Biology is the study of

Biome with cold, dark winters and short, soggy summers; permafrost

The nucleus of an atom contains electrons and protons.

vacuoles

a protein that speeds the rate of a chemical reaction

Estuaries form where

 To respond to chemical signals, a cell must have a(n) __________ to which the signaling molecule can bind.

 A range of conditions under which an organism can grow and reproduce.

Eukaryotic cells

Well-tested explanation of observations about nature that help scientists make predictions about nature

The sum of all the genetic diversity among all the organisms in the biosphere.

Which are goals of science?

A keystone species is one that  

The trapping of heat by gases in the atmosphere.

Changes in zooplankton populations, small marine animals that eat algae, don't affect all animals in a marine food web.

control rate of reactions, regulate cell processes, form cell structures, carry substances in & out of cells

The industrial revolution caused a sharp decrease in human population growth.

Cellular respiration occurs in

Average condition of temperature & precipitation in a region over long periods.

Which is the correct order of science methodology?

Climate, precipitation, landmasses, wind currents are all

Provides for human needs while preserving the ecosystems that provide renewable resources.

mitochondria

chloroplast

The condition of Earth’s atmosphere at a particular time and place. 

Intermolecular forces of attraction between polar molecules.

Cytoplasm

Consists of adenine, the sugar ribose, and three phosphate groups. 

Limiting factors determine the immigration capacity of a population. 

Kelp forests and coral reefs are found in

 The ____________ is the area in which a population lives.

 ATP releases energy when it ______________ bonds between its phosphate groups.

What effect do carbon dioxide and methane have on Earth’s temperature?

Process by which chemical energy is used to produce carbohydrates.

 Unicellular prokaryotes, called bacteria , are adapted to living in a remarkable number of different places.

organ

The diagram illustrates a(n)

A barnacle living on a whale’s skin 

When electrons are shared between atoms.

Which is NOT a subatomic particle?

 The place where a species lives.

Physical and biological conditions in which a species lives & the way the species obtains what it needs to survive.

Deep ocean currents are caused by the sinking of warm water near the poles.

An organized way of gathering and analyzing evidence about the natural world.

A hydrogen bond is stronger than a covalent bond.

amino acids are the monomers of

Organisms that capture energy from sunlight or chemicals & use that energy to produce food.

the process in which water evaporates from the leaves of plants.

All the organisms living in a particular place, together with their physical environment.

Which is NOT a characteristic of life?

A pond with all of the species living together in this one location would be a good example of a(n)

The first species to live in an area of primary succession.

phospholipid bilayer

Some bacteria convert nitrogen gas into ammonia, animals eat the ammonia, then make it available to plants.

Occurs when population growth slows and then stops after a period of exponential growth has occurred.

Earth’s curvature causes different __________ to receive less or more intense solar energy.

Which is the best definition of ecology?

ribosomes

The variable you change in an experiment:

Population density is the ___________ of individuals per unit area. 

Assemblage of individuals of the same species living in the same area.

endoplasmic reticulum

Photosynthesis, cellular respiration and human activities such as burning are part of the

Nucleus

Energy is the ability to do work.

centrioles

An organism that feeds by chemically breaking down other organisms.

Invention of the _________ made the discovery of cells possible. 

 He used the term "cell" to refer to the tiny empty chambers he saw when he observed magnified cork.

How the individuals are spaced in their range is a population’s ____________________. 

An aphid providing food to an ant in exchange for protection.

lysosome

Freshwater wetlands purify water by ____________ pollutants.

The diagram shows:

Chloroplasts are never found in animal cells. 

All cells are surrounded by a cell wall. 

The relatively constant internal physical and chemical state of a living cell. 

A lion eating a zebra is an example of  

golgi apparatus

Any living part of an environment.

The diagram below illustrates the

Competition is an example of a limiting factor. 

Atoms of the same element that differ in the number of neutrons they contain.

 A harmful material that can enter the biosphere.

Which of the following must be true for diffusion to occur?

Organelles

store and transmit hereditary (genetic) information

It causes water molecules to be drawn together, producing surface tension.

store energy and form parts of biological membranes and waterproof coverings

cell wall

nucleotides are the monomers of

cytoskeleton

When one or more electrons are transferred from one atom to another.

Group of terrestrial regional climate communities characterized by soil type, climate, & plant & animal life

Unequal distribution of the sun’s heat on Earth’s surface results in 3 main climate zones: polar, temperate, tropical