NVCC BIO 101 EXAM 2 questions with verified
answers
What are the two major types of cells in existence (based on the presence of
membrane-bound organelles and a nucleus)? Ans✓✓-Prokaryotic and Eukaryotic
What is a membrane-bound cytoplasmic organelle where the proteins and lipids
made in the ER are modified and stored? Ans✓✓-Golgi Apparatus
Why are our cells so small? Ans✓✓-Allows our cells to compose faster and
replace and to maximize ratio of their surface area to volume
What features are common to all cells? Ans✓✓-Genes
Ribonucleic acid
Genetic Code
ATP
T/F: Ultimately, genetic code is responsible for producing proteins. Ans✓✓-True
Around how many cells do we have in our body? Ans✓✓-About 37.2 Trillion
The fluid mosaic model describes the structure of the plasma membrane as a
mosaic of components. What structures comprise the mosaic? Ans✓✓-
Phospholipids
Cholesterol
Proteins
, Carbohydrates
T/F: Osmosis is a type of diffusion where salts move from an area of higher
concentration to an area of lower concentration. Ans✓✓-False
What would happen to a red blood cell if it were exposed to a hypertonic
environment? Ans✓✓-- Cell will lose water and undergo crenation
- Plasmolysis
What is Plasmolysis? Ans✓✓-the process in which cells lose water in a hypertonic
solution
What is osmosis? Ans✓✓-diffusion of water across a selectively permeable
membrane
T/F: Protein channels can use ATP to move molecules against their concentration
gradient. Ans✓✓-False
What are transport (carrier) proteins? Ans✓✓-- Proteins that transport
substances across biological membranes
- Use energy to transport energy against the transport gradient
Which transport method relies primarily on pressure to move molecules through
a selectively permeable membrane? Ans✓✓-Osmosis
What is an aquaporin is an example of? Ans✓✓-Water channel transporting
water through the cell membrane
answers
What are the two major types of cells in existence (based on the presence of
membrane-bound organelles and a nucleus)? Ans✓✓-Prokaryotic and Eukaryotic
What is a membrane-bound cytoplasmic organelle where the proteins and lipids
made in the ER are modified and stored? Ans✓✓-Golgi Apparatus
Why are our cells so small? Ans✓✓-Allows our cells to compose faster and
replace and to maximize ratio of their surface area to volume
What features are common to all cells? Ans✓✓-Genes
Ribonucleic acid
Genetic Code
ATP
T/F: Ultimately, genetic code is responsible for producing proteins. Ans✓✓-True
Around how many cells do we have in our body? Ans✓✓-About 37.2 Trillion
The fluid mosaic model describes the structure of the plasma membrane as a
mosaic of components. What structures comprise the mosaic? Ans✓✓-
Phospholipids
Cholesterol
Proteins
, Carbohydrates
T/F: Osmosis is a type of diffusion where salts move from an area of higher
concentration to an area of lower concentration. Ans✓✓-False
What would happen to a red blood cell if it were exposed to a hypertonic
environment? Ans✓✓-- Cell will lose water and undergo crenation
- Plasmolysis
What is Plasmolysis? Ans✓✓-the process in which cells lose water in a hypertonic
solution
What is osmosis? Ans✓✓-diffusion of water across a selectively permeable
membrane
T/F: Protein channels can use ATP to move molecules against their concentration
gradient. Ans✓✓-False
What are transport (carrier) proteins? Ans✓✓-- Proteins that transport
substances across biological membranes
- Use energy to transport energy against the transport gradient
Which transport method relies primarily on pressure to move molecules through
a selectively permeable membrane? Ans✓✓-Osmosis
What is an aquaporin is an example of? Ans✓✓-Water channel transporting
water through the cell membrane
