Biology Missed Test Questions Flashcards
Cells in multicellular organisms have many different sizes and shapes. These differences in cells is called cell specialization. Cell specialization allows cells to__________.
perform different functions
Biologists who work in the fields of genomics and molecular biology study
DNA
The basic unit of length in the metric system is the _____
meter
Using a universal system of measurement is the MOST important during which part of scientific methodology?
collecting data
Subatomic particles are _______________
particles that are smaller than an atom
Isotopes are atoms of the same element with the same number of protons and a different number of ______
neutrons
Water molecules are polar, with______________
the oxygen side being slightly negative and the hydrogen being slightly positive.
Amino acid is to protein as ______________
monomer to polymer
Which of the following is NOT a monomer?
a protein
In chemical reactions, atoms are ________
rearranged
A chemical bond formed by the transfer of electrons is a(an) ____ bond.
ionic
Why are water molecules polar?
Water molecules are polar because the oxygen is slightly more negative and the hydrogen is slightly more positive. This is why hydrogen is attracted to the oxygen, because it is polar.
List the 4 common types of organic compounds or macro molecules.
carbohydrate
lipids
nucleic acids
proteins
unlike the cell membrane, the cell wall is a ________.
rigid structure
A group of similar cells that preform a particular function is called _____.
a tissue
Molecules tend to move from an area where they are more concentrated to an area where they are less concentrated. This process is called ______.
diffusion
Large molecules, such as glucose, that cannot cross the blipped can still move across across the membrane through a type of passive transport called ___________.
facilitated diffusion
List two functions of the cytoskeleton
keep shape & movement
What would happen to an animal cell with an internal salt concentration of 0.8 %. If it were placed in a salt solution with a concentration of 0.2%? Why?
Water would flow in —> cell would swell
How are endocytosis and exocytosis similar/different?
similar- Both forms of active transport
different- moving particles in and out the cell
Moving particles out of the cell
exocytosis
moving particles in the cell
endocytosis
Most plants appear green because chlorophyl does not absorb ___ light
green
where do light-dependent reactions take place?
within the thylakoid membrane.
