Science Post-Test Review Flashcards
What could cause an enzyme to work at a faster rate?
Being exposed to an increase in temperature
Why would a seed in a sealed container filled with what increase in mass but the entire container remain the same mass?
Matter and energy can change shape and form but the atoms/energy contained always exist in some form
How do prokaryotic organisms and multicellular eukaryotic organisms differ from each other?
Prokaryotes don’t have any specialized organelle and are single celled; Eukaryotes have specialized organelle and can be either single or multicellular
What is the function of the chloroplast in a plant cell?
Perform photosynthesis to produce glucose for all plant life
What to cellular processes both start with glycolysis?
Mitosis and Meiosis
How do molecules move in active transport? What is required when Active transport is occurring?
Low to High; sodium
What is the purpose of transcription for a cell and where does transcription occur?
Transcription is the cellular process of copying DNA code into RNA; occurs in nucleus
What is osmosis? How does a hypotonic solution affect a cell? hypotonic solution? isotonic solution?
The movement of water through a membrane; causes cells to shrink because water is being pulled from the membrane; so stays the same size because solution inside and outside are even
Compare how prokaryotic and eukaryotic cells carry out life processes?
Prokaryotic cells do everything in one so; multicellular eukaryotic cells specialize to perform specific functions
What effect does an enzyme have on the rate of a chemical reaction?
It increases the rate of a reaction
How do equations illustrate the law of conservation of matter?
The number of each type of element is the same on both sides of the equation
What would happen to the cells inside your body if you drink saltwater, increasing the concentration of salt in your bloodstream?
They would release the water and shrink
What is true about the formation of oxygen during photosynthesis?
It is formed as a byproduct of photosynthesis
What is an enzyme and what purpose do they serve in biology?
Enzymes are protein molecules that increase the rate of chemical reactions; function best at specific temperature is and pH’s
