Answer:pollen grain
Explanation:
Because it contains male gametophyte.
It's a covalent bond. The two atoms connected are oxygen and hydrogen. Neither one is a metal of any kind
Answer:
B) Krebs cycle (citric acid cycle)
Explanation:
Glycolysis breaks glucose into two pyruvate molecules. Pyruvate is decarboxylated into acetyl CoA and the reaction occurs in the matrix of mitochondria. In the mitochondrial matrix, acetyl CoA enters Kreb's cycle and is broken down into CO2 and H2O. For one molecule of acetyl CoA, two molecules of CO2 are released as a by-product. Therefore, out of three carbon atoms of pyruvate, two are released as CO2 during Kreb's cycle.
Cell walls are made out of cellulose and they give a sturdy structure to the cells (if you notice they have a rectangular shape)
