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In the space below, answer ONE of the following questions: Define passive transport and active transport, including any differences between them.  Water balance actually occurs at the cellular level, and maintaining the proper water balance is very important to an organism.    We see the results of this water movement in our daily lives.  Explain why your lettuce gets wilty when you pour vinegar-and-oil dressing on it (make sure to use the proper terminology).  Include the following in your answer:  water and solute concentrations, concentration gradients, type of solution, direction and mechanism of movement, and result to cells. OR Describe how a strand of DNA can eventually become a protein through the processes of transcription and translation.  Include the location of each of these processes, the main events of each, and the names and roles of each of the three types of RNA.  

In a molecule of RNA, the nitrogen-base A always pairs with [letter1], and G always pairs with [letter2].

Which of the following does NOT occur during DNA replication?

In the space below, answer ONE of the following questions: Name three things that can affect the speed of diffusion of a solute. OR List the three parts of a nucleotide.

Regardless of the number of alleles for a trait that exist in the population, the maximum number of alleles for a trait that a healthy individual can possess is [number1].

The nuclear membrane dissolves and DNA condenses into chromosomes during anaphase of mitosis.

Only plant cells do photosynthesis and only animal cells do cellular respiration.

The statement “each homologous pair lines up without regard to any other pairs” best describes Mendel’s law of

Most metabolic reactions in a cell concern the harvest, storage or release of energy.

The cell membrane