<span>Trophoblasts
Trophoblasts are cells that make up the external layer of a blastocyst, this is a major source of nutrient for a newly formed organism</span>
Answer:
Stomach - break down food
Small intestines - absorb all nutrients and seperate them from waste
Large Intestines - continue collecting any remaining nutrients and expell any waste
Answer:
1. Glycolysis
2. Pyruvate
3. Mitochondria
4. Acetyl CoA
5. Krebs (citric acid) cycle
6. Electron transport system
Explanation:
The cellular respiration is the process which converts the food material to energy molecule in the form of ATP.
The cellular respiration begins with the process of glycolysis which converts the glucose molecule to two molecules of pyruvate in the cytosol.
The pyruvate molecule then enters the mitochondria where it gets converted to Acetyl CoA through pyruvate decarboxylation reaction. The Acetyl CoA then enters the Krebs cycle which converts the acetyl CoA by adding the oxaloacetate producing the reducing equivalents.
These reducing equivalents get reduces and the free electron enters the electron transport chain which finally forms the ATP molecule.
Answer:
b.) an amino acid.
Explanation:
A nucleotide contains three things:
- a 5-carbon sugar
- a nitrogenous base
- a phosphate group
Since amino acids are not on this list, the correct answer is b.
Answer
Cellulose, lignin and suberin are the chemicals that provide rigidity to cell wall.
Explanation
In plant two type of growth occurs, primary and secondary growth. in primary growth when new cells are formed they are bounded by primary wall whose composition in mainly of cellulose. in secondary growth accumulation of lignin in secondary wall, suberin in cork cell wall and lignin in xylem cell wall occurs which provide rigidity.