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How does the body respond to a decrease or increase in core body temperature?

If the temperature decreases:The blood vessels supplying the skin constrict (vasoconstriction) resulting in less blood flow to the skin surface and...

Answered by Portia J. • Biology tutor

10908 Views

The pancrease secretes protease enzymes. How do organelles within a cell work together to PRODUCE and RELEASE these protein molecules from the cell?

The nucleus contains the gene that codes for the enzyme and is where transcription happens to produce mRNA . The mRNA leaves the nucleus and attaches to a ribosome on the rough endoplasmic reticulum. The ...

Answered by Jessica E. • Biology tutor

13099 Views

Describe how phagocytosis of a virus leads to presentation of its antigens and how presentation of this antigen leads to the secretion of an antibody against this virus antigen.

The macrophage engulfs the virus and the phagosome fuses with a lysosome, the virus is then broken down by hydrolytic enzymes inside the lysosome, and virus' antigens are displayed on the cell surface mem...

Answered by Oenone R. • Biology tutor

2951 Views

Explain the mechanism of synaptic transmission.

Synapses are the physical gaps that separate neurons from other cells. Neurons transmit information across synapses by converting the electrical signal into a chemical signal, usually neurotransmitters. T...

Answered by Lauren D. • Biology tutor

4063 Views

Describe how a cell produces a mature protein from DNA, including the main enzymes involved and where each stage takes place.

Initially, the double helix structure of DNA is broken down by DNA helicase in the region of the gene encoding the protein. Then the template strand of the gene is transcribed into RNA by RNA polymerase. ...

Answered by Glyndwr J. • Biology tutor

1194 Views