Answer: it grows a tube to travel down to the ovary
Explanation:
As a result of pollination, pollen grain lands on the sigma of the pistil or carpel. On the stigma pollen grain begins to germinate and grows a long pollen tube. The pollen tube grows longer and makes its way from the stigma, down the style and reaches to the ovary. Pollen tube carries two male gametes or sex cells. One male gamete fertilize the egg cell to produce zygote and the gamete fuses with polar nuclei to form primary endosperm cell.
Answer:
See explanation below.
Explanation:
Catabolism and anabolism are <u>both biochemical reactions that are part of important process of metabolism.</u>
Anabolic and catabolic pathways 'need each other,' that is, <u>the energy that is produced from catabolism is utilized by anabolism.</u>
Anabolic reactions use <u>simple molecules to build complex molecules</u>, whereas the role of catabolism is <u>to break the large molecules and transform them into smaller ones.</u>
<u>Example of Anabolism</u>
<em>Photosynthesis:</em>
- The reaction between CO2 and H2O to form glucose and oxygen.
<u>Example of Catabolism</u>
<em>Digestion:</em>
- Breaking down of large molecules to produce energy.
<u />
<span>During crossing over in meiosis </span>an incomplete exchange of genetic material occurs. This would most likely produce,a deficiency in one homologue and a duplication in the other homologue
Answer:
The question lacks options, the options are;
A) 4 KJ
B) 122 KJ
C) 30.5 KJ
D) 1600 KJ
The answer is B, 122KJ
Explanation:
Adenosine triphosphate (ATP) is the energy currency of all living cells. It is the usable form of energy by cells for their life functions. Energy in ATP is harnessed via the hydrolysis of one of its phosphate molecules to form Adenosine diphosphate (ADP). The energy (measured in Kilojoules) needed by cells is released in this process.
In this case, a cell uses energy to pump hormones into the bloodstream. According to the question, 4 ATP's were used i.e. 4 ATP were converted to ADP. The hydrolysis of one ATP molecule releases 30.5 KJ/mol of energy needed for cellular work.
Hence, if 4 ATP were utilized by this particular cell, 4 × 30.5 KJ = 122 KJ of energy will be used by the cell to pump hormones.
