Hi!
A nerval impulse sends an impulse to a muscle or gland, enabling it to respond.
Hope this helps! Good luck!
Answer:
The correct option is a. "increased cortical mass, increased numbers of neurons, increased synaptic connections, increased neurotransmitter amounts, and increased myelination.
"
Explanation:
Rodents that have been raised in enriched environments were found to have thicker cerebral cortex containing approximately 25% more synapses in a study conducted by Mark Richard Rosenzweig. This increase in <em>synapses</em> implies in an increase in <em>neurons</em> and <em>neurotransmitters</em>, which also indicates an increase in <em>myelination</em>.
Answer: See explanation
Explanation:
1. The factors that should be considered when evaluating the costs and benefits of a new innovative process include the cost to build, the effort and time to implement and the maintenance and recurring costs. Therefore, the correct options is D. I, II and III.
2. The factors that will contribute to a measurement of environmental quality is the Salinity levels. Therefore, the correct option is C.
3. If all the other costs and benefits are equal, then the product that will be recommended will be option A "Product 1 because it requires less monitoring, reducing the overall cost"
Since Product 1 requires monitoring once in three months while Product 2 requires monitoring once every week, then we can deduce that product 2 will increase the overall cost.
4. The option that describes the relationship between human population size and resource use is option A "Countries with high populations are likely to use more resources".
When there's an increase in population, the people will make use of more resources when compared to an area with lesser population. Therefore, the correct option is A
Answer: gaps left at the 5' end of the lagging strand.
Explanation:
Eukaryotic Chromosomes are known as the repetitive at the very ends of chromosomes, found in a wide range of Eukaryotic species. They protect the end chromosomes from deterioration or fusion with the neighboring chromosomes.
Telomeres provide a mechanism for their replication by semi conservative DNA replication (a replication in which two parental DNA strands would act as a template for new DNA strands to be synthesized) and length maintenance by Telomerase Enzymes. Telomerase Enzymes are used to extend shortened telomeres during its’ DNA replication.
DNA replication in Eukaryotic Telomeres doesn’t begins at the either end of the DNA strands but starts in the center, and considering that all known DNA Polymerase ( an enzyme that is essential for DNA replication) read the template strand in the 3’ to 5’ direction, one finds a leading strand and a lagging strand on the DNA molecule being replicated.
On the leading strand, DNA Polymerase make complementary DNA strand without any difficulty because it reads the template strand from 3’ to 5’.
On the other hand, there is a difficulty going in the other direction on the lagging strand.
WHY? This is “due to gaps left at the 5’ end of the lagging strand”. To overcome this difficulty, short sequences of RNA acting as Primers (a short single-stranded nucleic acid utilized by all living organisms in the initiation of DNA synthesis) attach to the lagging strand, a short distance ahead of where the initiation site was.
I hope this helps alot!
Answer:The above statement is "false".
Explanation:
The following events take place during contraction-relaxation of a muscle:
•Action potential in T tubule activates voltage-sensitive receptors,which in turn trigger Ca ions release from terminal cisternae of sacroplasmic reticulum(SR) into cystol.
•Ca ions bind to troponin;troponin changes shape,removing the blocking action of tropomyosin;actin active sites is exposed.
•CONTRACTION; myosin heads alternatively attach to actin and detach,pulling the actin filaments toward the center of the sarcomere;using ATP in this process.
•removal of Ca ions by active transport into the SR after the action potential ends.
•RELAXATION occurs.Actin and myosin return back to its unbound state.
