The endosymbiosis explains how eukaryotic cells may have evolved from prokaryotic cells.
Answer: Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
~i hope this helps :)
Answer:
Magma that flows then cools on the earth's surface fast enough that there is no time for any crystals to form on the rocks and are as smooth as glass.
Explanation:
Answer:Terms in this set (10)
Mouth
Teeth chop food & saliva breaks down food
Esophagus
Tube that connects mouth to the stomach (peristalsis)
Stomach
Organ that releases acid and juices & mixes with food to create chymes
Small Intestine
Greatest amount of digestion takes place (if taken out, it would be 21ft long) (takes 4hrs to get to the small intestine)
Liver
Gland that releases bile and filters poisonous waste
Gall Bladder
Small organ that stores bile (you can live without it)
Pancreas
Gland that produces digestive enzymes and insulin
Large Intestine
(colon) Tube extending the small intestine where your indigestive food is ready for elimination
Rectum
Short tube at the end of the large intestine
Anus
Opening to the outside of the body
Explanation:
The organs of the digestive system are the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and anus. Recognizing how these organs work together to digest food is key to understanding how digestion works.
Answer:
Option 3, Chromatids remain attached to one another until anaphase
Explanation:
Centromere lies at the center, end or other points of the chromosome and joins the two sister chromatids. During cell division, the spindle fibers attaches at the centromere and detaches the chromosomes during the anaphase of the cell division to ensure that each daughter cell gets equal number of chromosomes at the end of mitosis. Centromere plays an essential role in the separation of chromosomes.
Hence, option 3 is correct
