BHCC BIO 108 HW 4 QUESTIONS WITH COMPLETE SOLUTIONS!!
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BHCC BIO 108 HW 4
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BHCC BIO 108 HW 4
Which of these is an accurate description of the structure of a chloroplast? -
️️Double smooth outer membrane surrounding a highly folded inner membrane and
a fluid called the stroma
A large, membrane-bound sac found in plant cells that may contain plant pigments or
toxins used in defense i...
BHCC BIO 108 HW 4
Which of these is an accurate description of the structure of a chloroplast? -
✔️✔️Double smooth outer membrane surrounding a highly folded inner membrane and
a fluid called the stroma
A large, membrane-bound sac found in plant cells that may contain plant pigments or
toxins used in defense is called a(n) _ . - ✔️✔️vacuole
the is the fundamental unit of life. - ✔️✔️cell
Why is a large surface-area-to-volume ratio a necessity for cells? - ✔️✔️It results in a
relatively greater area to absorb nutrients and secrete wastes.
Cell membranes are composed mainly of _____. - ✔️✔️phospholipids
Which category of membrane proteins is responsible for allowing the passage of certain
materials in and out of the cell? - ✔️✔️Channel proteins
Select all that apply
Choose all that apply. Stem cells - ✔️✔️-can divide almost indefinitely.
-contain all of the genetic information and internal structures to become almost any
other type of cell.
-may be useful to treat macular degeneration, type 2 diabetes, and even Alzheimer
disease.
-are unspecialized cells.
Unspecialized cells that have the potential to divide almost indefinitely to produce a
variety of cell types are termed _ cells. - ✔️✔️stem
In what ways do cells differ from each other? - ✔️✔️size
shape
The abbreviation for the genetic material of all cells is _. - ✔️✔️dna
Why are cells so small? - ✔️✔️To provide a favorable surface-area-to-volume ratio
Select all that apply
Which of the following would be found in the membrane of an animal cell? -
✔️✔️phospholipid bilayer
cholesterol molecules
embedded proteins
, Aquaporins, which allow water to enter or exit a cell, are one example of which type of
protein? - ✔️✔️Channel proteins
Prokaryotes are typically _____ and _____ than eukaryotes. - ✔️✔️smaller
less complex
Identify the benefits that organelles provide to eukaryotic cells. - ✔️✔️The cells are
more efficient with organelles.
The cells are more successful with organelles.
The plasma membrane of all cells are composed of _. - ✔️✔️phospholipids
Which organelle controls the structure and function of a eukaryotic cell? - ✔️✔️nucleus
True or false: The smaller the cell, the greater its surface-area-to-volume relationship. -
✔️✔️true
The portion of the eukaryotic cell that helps compartmentalize the cell, separating
enzymatic reactions from one another, is the - ✔️✔️endomembrane system.
The first prokaryotic cell appeared on Earth approximately _ billion years ago. -
✔️✔️3.5
A small structure within a cell that performs a particular function for the cell is
a(n)_____. - ✔️✔️organelle
What eukaryotic organelle contains chromatin and a nucleolus? - ✔️✔️Nucleus
Select the two organelles that are directly involved in energy transformations in the cell.
- ✔️✔️Chloroplasts
Mitochondria
What are the four main components of the endomembrane system? - ✔️✔️Golgi
apparatus
Vesicles
Nuclear envelope
Endoplasmic reticulum
Which two organelles have more than one membrane? - ✔️✔️Mitochondria
Chloroplasts
The organelle that carries out the process of photosynthesis in a eukaryotic cell is the _
- ✔️✔️Chloroplasts
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