Biology Dec Bim Flashcards
Simple diffusion is :
a type of passive transport
Passive transports occurs when :
When substances cross the plasma membrane without energy
When it occurs facilitated diffusion:
When molecules need help to pass through
Facilitated diffusion have 2 types of proteins
What types ?
Channel & carrier
Channel proteins :
Form pores or tiny holes
Carrier :
Bind with specific ions or molecules
Is a type of Simple diffusion :
Osmosis
When it occurs active transport:
When energy is need for a substance to move across a plasma membrane (with energy)
Example of active transport:
Sodium potassium pump
What is vesicle transport?
Transport required energy
Examples of vesicle transport:
Endocytosis & exocytosis
Plants obtain glucose by :
Photosynthesis
Humans obtain glucose by:
Eating sugars
They are 2 types of molecules :
Glucose and ATP
What is glucose?
Is the end of photosynthesis , and stores and transports energy life processes inside cells .
What is ATP?
Is made during the first half of photosynthesis
What is the main function of the chlroplasts?
Is the photosynthesis
The main function of the central vacuole is :
It stores energy , water and proteins
Of what consist the digestive system?
Consist of organ that break down food and absorb nutrients
What is gastrointestinal ?
Is a long tube that connects the mouth with the anus .
Mouth:
Frirst digestive organ where food enters , release of digestive enzymes by salivary glands inside the mouth
Esophagus :
Transport food ( pharynx)
Stomach :
Last organ of mechanical occurs . “is a sac-like organ in which food is further digested both mechanically and chemically.”
Small intestine:
Chemical digestion occurs , the duodenum is the shortest parts (absorbs)
