Does chloroplast store water?
Chloroplasts /ˈklɔːrəˌplæsts, -plɑːsts/ are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells.
Does chloroplast store glucose?
The extra sugar that the plant does not use is stored as starch for later use. Mitochondria are known as the powerhouses of the cell. In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.
What are the roles of chloroplast and chlorophyll in photosynthesis?
process that captures energy from the sunlight to make sugars that store chemical energy. a molecule in chloroplasts, that absorbs some energy in visible light. Chloroplasts contain a light absorbing molecule called chlorophyll and this is the place in plants where photosynthesis takes place.
How does the chloroplast keep the cell alive?
Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.
Can chloroplast reproduce themselves?
The chloroplasts do not reproduce, though. Chloroplasts seem to be dependent on the host cells for reproduction, but your idea of figuring out which proteins (or other molecules) they need from the host is great.
What is 60S and 40S ribosome?
Ribosomes contain two different subunits, both of which are required for translation. The small subunit (“40S” in eukaryotes) decodes the genetic message and the large subunit (“60S” in eukaryotes) catalyzes peptide bond formation.
What is 30S and 50S ribosomes?
Ribosomes are composed of two subunits with densities of 50S and 30S (“S” refers to a unit of density called the Svedberg unit). The 30S subunit contains 16S rRNA and 21 proteins; the 50S subunit contains 5S and 23S rRNA and 31 proteins. Ribosomal subunits are composed of ribosomal RNA (rRNA) and proteins.
What does Svedberg unit mean?
What does the 30S subunit do?
The 30S ribosomal subunit has two primary functions in protein synthesis. It discriminates against aminoacyl transfer RNAs that do not match the codon of messenger RNA, thereby ensuring accuracy in translation of the genetic message in a process called decoding.
Which antibiotics bind to 30S?
Aminoglycoside antibiotics have an affinity for the 30S ribosome subunit. Streptomycin, one of the most commonly used aminoglycosides, interferes with the creation of the 30S initiation complex. Kanamycin and tobramycin also bind to the 30S ribosome and block the formation of the larger 70S initiation complex.
Why do prokaryotes have 70S ribosomes?
The purpose of the ribosome is to take the actual message and the charged aminoacyl-tRNA complex to generate the protein. All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits.
What is the final step of translational initiation in both bacteria and eukaryotes?
What is the final step of translational initiation in both bacteria and eukaryotes? In both bacteria and eukaryotes, the final step in translational initiation is the union of the large and small ribosomal subunits, coupled with GTP hydrolysis and release of initiation factors.
Why is it called 3 and 5 end?
Each end of DNA molecule has a number. One end is referred to as 5′ (five prime) and the other end is referred to as 3′ (three prime). The 5′ and 3′ designations refer to the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds.
What does 5 ‘- 3 mean?
From The School of Biomedical Sciences Wiki. 5′ – 3′ direction refers to the orientation of nucleotides of a single strand of DNA or RNA. The 5′ and 3′ specifically refer to the 5th and 3rd carbon atoms in the deoxyribose/ribose sugar ring.
What does 3 Prime mean?
3′ (3-prime) MGI Glossary. Definition. A term that identifies one end of a single-stranded nucleic acid molecule. The 3′ end is that end of the molecule which terminates in a 3′ phosphate group.