Exam 1 Flashcards
Atom & molecules, Cells, ETc…
A substance that is composed of only one type of atom is called?
An Element
Which graph illustrates a reaction that is being released into the environment?
Graph A, because the products are low
A molecule that has a partial positive charge on one side and a partial negative charge on the either side is called?
A Polar Molecule
Water is a polar molecule because?
Different parts of the molecule have slightly different charges
The 3 characteristics of hydrogen bonding is?
Capillarity, Adhesive Strength and Cohesive Strength
Long chains of amino acids are found in?
Proteins
What is an example of a non lipid?
Starch
Describe how an enzyme can function in speeding up a chemical reaction within a cell
Enzymes function as biological catalyst that speed up chemical reactions within the cell, resulting in a lower activation energy required for the reaction process to continue
Only Eukaryotic cells have?
Membrane- bound organelles
A cell that has no nucleus and no mitochondria , but does have a cell wall & membrane is called a?
Prokaryote cell
The structure that regulates what enters and leaves the cell is called?
The cell membrane
The packing and Distribution center of the cell is the?
Golgi Apparatus
A particularly active cell might contain large numbers of
Mitochondria
Animal Cells don’t have?
A cell wall
What is the name of the process that does not expand energy
diffusion
Ridding the cell of material by discharging it from sacs at the cell surface is called
Exocytosis
Molecules that are too large to be moved across a cell membrane can be removed from the cell by
Exocytosis
Why is it dangerous for humans to drink ocean water?
Ocean water is mainly salt based so large amounts will lead to serve dehydration. Cells in the human body are surrounded by low salt concentration fluids, ocean water high concentrations can kill or harm cells
How are the organs of a multicellular organism like the organelles of a single cell?
Multicellular organisms have different organs for specific jobs to help the organism live. Single cells have different organelles with specific jobs to help the cell stay alive
In order to fit within a cell, DNA becomes more compact by
Wrapping tightly around associated proteins
Haploid cells are?
Body cells
What is the sequence of the cell cycle
G1> S> G2>M>C
Growth: G1
DNA Copying; S
A spindle fiber is a specialized form of a?
Microtubule
