MSU BS 161 Exam 2 UPDATED ACTUAL Questions and
CORRECT Answers
universal features of cells
Membranes - regulate what enters and exits the cell
- used to define big groups of life
Membranes contain Amphipathic lipids and proteins
amphipathic containing distinct polar and nonpolar
Main lipid found in membranes phospholipid
phospholipid form bilayers in aqueous neutral pH environments
, Forms the membrane hydrophobic clustering
what affects the fluidity of LDFs between fatty acids tails
membranes
what maintains the flexibility of Cells - using chemical reactions to alter lipids to respond to
membranes and regulate fluidity changes in temp
chains lack double bonds, resulting in phospholipids with straight
saturated fatty acids
structure that favors tight packing
have one or more double bonds that introduce kinks in the
unsaturated fatty acids
phospholipid reducing the tightness of packing
More like oil(fluid): increases
Temperature
More like butter(less fluid): decreases
Saturation of phospholipid fatty More like oil(fluid): decreases
acid tail More like butter(less fluid): increases
length of phospholipid fatty acid More like oil(fluid): decreases
tails More like butter(less fluid): increases
transporter
receptor
membrane protein functions
enzyme
anchor
What is one importance of They house together molecules that relate to a specific process.
compartments in cells?
How do compartments in cells They separate actions that oppose each other, such as synthesis
help with opposing actions? and breakdown of molecules.
What is a benefit of internal They increase the space available for processes that occur
membranes in cells? across a membrane.
Which processes are enhanced Parts of respiration and photosynthesis.
by internal membranes?
Nucleus (Features of animal is the store house for the cells genetic information and the site
cells) for RNA synthesis
Mitochondria (feature of animal produce most of the ATP that serves as the energy currency of
cells) the cell
Cell membrane (feature of is comprised of phospholipids and proteins, and regulates the
animal cells) passage of materials into and out of the cell
Endoplasmic reticulum (feature is involved in both protein and lipid synthesis
of animal cells)
Lysosomes (feature of animal contain enzymes that break down macromolecules such as
cells) proteins, nucleic acids, lipids and carbohydrates
Golgi apparatus (feature of modifies and sorts proteins and lipids as they move to their final
animal cells) destinations into or out of the cell
Cell wall (Features of plant cells) is a rigid barrier composed of polysaccharides
Chloroplasts (Features of plant enabled plants cells of harness the energy of sunlight to
cells) synthesize sugar
The endomembrane system links Mitochondria is not apart of that
several organelles in cells
The nucleus houses what the genome and is the site of transition (produce RNA)
CORRECT Answers
universal features of cells
Membranes - regulate what enters and exits the cell
- used to define big groups of life
Membranes contain Amphipathic lipids and proteins
amphipathic containing distinct polar and nonpolar
Main lipid found in membranes phospholipid
phospholipid form bilayers in aqueous neutral pH environments
, Forms the membrane hydrophobic clustering
what affects the fluidity of LDFs between fatty acids tails
membranes
what maintains the flexibility of Cells - using chemical reactions to alter lipids to respond to
membranes and regulate fluidity changes in temp
chains lack double bonds, resulting in phospholipids with straight
saturated fatty acids
structure that favors tight packing
have one or more double bonds that introduce kinks in the
unsaturated fatty acids
phospholipid reducing the tightness of packing
More like oil(fluid): increases
Temperature
More like butter(less fluid): decreases
Saturation of phospholipid fatty More like oil(fluid): decreases
acid tail More like butter(less fluid): increases
length of phospholipid fatty acid More like oil(fluid): decreases
tails More like butter(less fluid): increases
transporter
receptor
membrane protein functions
enzyme
anchor
What is one importance of They house together molecules that relate to a specific process.
compartments in cells?
How do compartments in cells They separate actions that oppose each other, such as synthesis
help with opposing actions? and breakdown of molecules.
What is a benefit of internal They increase the space available for processes that occur
membranes in cells? across a membrane.
Which processes are enhanced Parts of respiration and photosynthesis.
by internal membranes?
Nucleus (Features of animal is the store house for the cells genetic information and the site
cells) for RNA synthesis
Mitochondria (feature of animal produce most of the ATP that serves as the energy currency of
cells) the cell
Cell membrane (feature of is comprised of phospholipids and proteins, and regulates the
animal cells) passage of materials into and out of the cell
Endoplasmic reticulum (feature is involved in both protein and lipid synthesis
of animal cells)
Lysosomes (feature of animal contain enzymes that break down macromolecules such as
cells) proteins, nucleic acids, lipids and carbohydrates
Golgi apparatus (feature of modifies and sorts proteins and lipids as they move to their final
animal cells) destinations into or out of the cell
Cell wall (Features of plant cells) is a rigid barrier composed of polysaccharides
Chloroplasts (Features of plant enabled plants cells of harness the energy of sunlight to
cells) synthesize sugar
The endomembrane system links Mitochondria is not apart of that
several organelles in cells
The nucleus houses what the genome and is the site of transition (produce RNA)
