After another enzyme (a DNA helicase) has seperated two orginal strands of DNA, the polymerase moves along the template strand and polymerizes free nucleotides into a new antiparallel strand. ... DNA ligase joins pieces of DNA together, mainly joins Okazaki fragments with the main DNA piece.
Answer:
<h2>A. Chromosome</h2>
Explanation:
In intermediate phase of cell cycle, DNA replication occurs (in S-phase), so in inter phase, DNA become unfolded and in relaxed state and is available for replicating machinery.
When cell enter into prophase, DNA folds, coils and super coils and finally become in condensed form, which can be seen by microscope.
So this compact form of DNA is called as chromosome.
In humans. there are total 46 chromosomes.
Answer:
c) receptor; control center; effector.
Explanation:
Homeostasis maintains the internal body conditions almost constant. It includes specific cells that sense any deviations of internal or external conditions from the normal range. These cells are called receptors. The sensory information from the receptors is delivered to the control center. The central nervous system mainly serves as a control system wherein sensory information from the receptors is processed. The control center commands muscles and/or glands to perform desired responses to restore the homeostasis. Here, muscles and glands serve as effectors.
For example, thermoreceptors sense the rise of body temperature and the brain (control center) commands sweat glands (effectors) to produce sweat.
The three d's for group-living primates are detection, deterrence, and dilution. The primates are being preyed upon. Because of this, they developed defenses in order to protect themselves. The three d's of group-living primates are used in order to protect themselves to potential threat.
