Proficiency Review #3

A plant absorbs sunlight, which is used for photosynthesis.

Which statement illustrates a biotic factor interacting with an abiotic factor?

Energy obtained from food molecules would be reduced.

How would a disease that damages the mitochondria most directly affect the functioning of cells?

Artificial

When humans change the physical characteristics of organisms, what type of selection is it?

Plants or Producers

What type of organism obtains all its food from the abiotic components of an ecosystem?

Cell membrane and cell wall

Which organelles are most directly involved in transporting materials out of the cell?

Homeostasis

What is the process by which organisms maintain a stable environment internally?

Increasing the surface area of a reactant. (GRIND IT)

Stirring the reaction mixture (STIR IT)Adding a catalyst to the reaction mixtureIncreasing the temperature at which the

reaction takes place. (HEAT IT)

Which of the following conditions will increase the rate of a chemical reaction?

The use of ethanol reduces the amount of greenhouse gases produced from fossil fuels.

Which of the following would be an advantage fro using ethanol instead of gasoline as a fuel for cars?

The type of element (ionic or covalent) and the number of valance electrons that atom has.

Atoms can be connected to other atoms with bonds. Which factors help determine the number/type of bonds an atom can form?

Nutrients from digested food move from the digestive system directly into the circulatory system (red blood cells) to move throughout the body.

Elements in the same group or family on the periodic table have similar chemical properties and valance electrons.

HYDROGEN

Which element is most common in an average star?

Her mass will remain the same.

An astronaut travels from the Earth to the moon. Which of the following statements is true?

Pie charts are used to show data as parts of a whole (PERCENTS)

A line graph shows a change over a unit . (X AND Y axis)

A Bar Graph compares two or more things.

FRICTION

What force stops most objects?

ELECTRONS

Which atomic particles are shared or transferred when they form bonds?

A reaction that absorbs heat (becomes cool) is an Endothermic reaction. A reaction that releases energy (becomes hot) is an Exothermic reaction.

Any change in state of matter is a physical change.

Ice melting is a physical change.

When there are no more living members of a species, that species is said to be EXTINCT.

A baseball flying through the air.

Which of the following is an example of kinetic energy (energy in motion)?

A skier at the top of a hill.

Which of the following is an example of potential energy?

An adult develops melanoma which is a type of skin cancer. The cancer cannot be passed on to any children because the cancer is in a somatic cell (body cell) not the sex cells.

TTttRRrr

If an individual inherits two of the same alleles, either both dominant or both recessive for a particular trait, the individual’s genotype is HOMOZYGOUS.

GGATCGA

A to TT to AC to GG to C

During DNA replication, a complementary strand of DNA is made for each original strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will be…

Science, technology, and society affect each other in both positive and negative ways. One example was the discovery of antibiotics. They are used to treat bacterial infections. The extensive use however, has led to the evolution of dangerous resistant strains of bacteria.