Answer:
C. Coupled reactions establish an electrochemical gradient across a membrane.
Explanation:
- During cellular respiration in mitochondria, and during photosynthesis in chloroplasts, the electron transport chain requires a proton gradient to pump protons across the membrane by active transport.
- Protons flow back across the membrane by facilitated diffusion through ATP synthase, which utilizes them to phosphorylate ADP to ATP.
- This process of ATP synthesis by harnessing the elctrochemicaal gradient geenrated by the diffusion of protons across the biological membrane through ATP synthase is called chemiosmosis.
Answer:
C. are autotrophic
Explanation:
Autotrophs are important in the ecosystem because they create their own food
Explanation:
A university is building a new student center that is one third the distance from the arts center to the Academic.
Answer:
Ribosomes,cytoplasm ,cell wall and circular DNA could be used to justify that the cell is a prokaryote.
Explanation:
Ribosome Ribosome is present in both prokaryotic cell and eukaryotic cell.The prokaryotic cell 70S ribosome which contain 2 subunits the larger subunit is 50S and the smaller subunit is 30s
Cell wall Prokaryotes such as bacterial cell contain cell wall.Cell wall of bacteria contain various carbohydrates which are crosslinked with peptides resulting in the formation of peptidoglycan.
Cytoplasm The cytoplasm of prokaryotic cell such as bacteria contain ribosomes,chromosome and extracellular genetic material called plasmid.
Circular DNA Almost all prokayotic chromosome contain circular DNA molecule that does not contain any free ends.
Answer:
The cell of humans contains 46 chromosomes and is about to undergo cell division so two types of cells are formed. If the cell division occurs in somatic cells then mitosis occurs or if the cell division occurs in sex cells then meiosis occurs. In mitosis, two daughter cells are formed while in meiosis, four daughter cells are produced. In mitosis, each daughter cell has 46 chromosomes while in meiosis each daughter cell has 23 chromosomes.
