The principal difference, however, between photosynthesis and respiration (plants breathing is called respiration) is that photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.
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Answer:
Prokaryotes do not have introns, eukaryotes have introns
Explanation:
Prokaryotes do not have introns, eukaryotes do. Introns are regions of DNA that are transcribed but not part of the final protein. They interrupt exons, which are the coding parts of the gene. These are only present in eukaryotes.
Introns need to be removed before the mRNA can be translated into the protein sequence. This occurs by a process called splicing. The splicing machinery binds the junction between introns and exons and excises the intron. The exons are then fused together to create the mRNA.
Other processing steps occur to the eukaryotic pre mRNA to prevent it from being degraded in the cell. This includes adding a cap to the 5' end of the protein, and adding a poly A tail to the 3' end. One these steps are complete, the eukaryotic mRNA is complete.
The prokaryotic mRNA undergoes transcription and translation simultaneously because it doesn't require these processing steps.
1. TT1 = 6.5
TT 2 = 6
TT 3 = 1.5
TT4 = 8
TT5 = 3
2. Answers by order: 4,1,2,5,3,3
3.
TT 4 (5mL pepsin & 5mL sodium bicarbonate)
TT 3(10mL of hydrochloric acid (HCl))
TT 2(10 mL of pepsin)
TT 5(5mL Pepsin & 5mL (HCI))
TT 1(10mL of water)
4. Tube 5 is the best representation for the stomach.
Answer:
Nitrogen is essential for all living things because it is a major part of amino acids, which are the building blocks of proteins and of nucleic acids such as DNA, which transfers genetic information to subsequent generations of organisms.
Explanation:
Answer:
ATP
Explanation:
If molecules require ATP then it is an active transport
If molecules do not require ATP then it is a passive transport.
- Active transport moves molecules across the cell membrane from a region of low concentration to one with high concentration.
- It requires the use of energy for the transport
- The energy is derive from ATP
- Active transport moves materials against the transportation gradient.
