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7nadin3 [17]
3 years ago
10

Umbilical arteries carry blood from the placenta to the fetus. a. True b. False

Medicine
1 answer:
nevsk [136]3 years ago
8 0

Answer:

b. False

Explanation:

The umbilical vein carries oxygen rich blood from the placenta to the fetus. The umbilical artery carries deoxygenated blood from the fetus to the placenta.

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After a signal binds to a signal receptor, the next step is transduction. Why is the signal transduction step necessary?.
mr_godi [17]

Cells respond to environmental effects through signal transduction, which promotes healthy cell growth and normal cell function.

<h3>Why is the signal transduction step necessary?</h3>

The reason why after a signal binds to a signal receptor, we need the next step is as follows:

  • For the purpose of triggering an appropriate cellular response, living creatures have evolved a vast range of intricate procedures to send signals from the outside to the inside.
  • These molecular pathways can develop flaws that result in a variety of ailments, including diabetes, cancer, and psychotic conditions.
  • It is the mechanism by which a cell responds to the stimuli it receives from the environment by diffusion of those signals to its internal compartments.
  • Signal transduction is the process by which a cell translates a given signal or external stimulus into another signal or specific response.
  • First, a particular receptor on the cell's membrane or cytoplasm must be activated by a signaling molecule (also known as a ligand). transduction.
  • Ligand-receptor binding is extremely specific; it can be compared to a lock and key.
  • Second messengers are chemicals that enable intracellular signal amplification after a signal has been received.
  • A ligand's interaction to a receptor may result in the production of hundreds of second messenger molecules, which may then change thousands of effector molecules to cause a variety of reactions.
  • Signal transduction enables cells to perceive, interpret, and react to various environmental signals, enabling them to carry out their usual functions.

To learn more about signal transduction visit:

brainly.com/question/13989766

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7 0
1 year ago
How do the palatine tonsils contribute to immune function?.
Elanso [62]

Answer:

The tonsils are part of the body's immune system. Because of their location at the throat and palate, they can stop germs entering the body through the mouth or the nose. The tonsils also contain a lot of white blood cells, which are responsible for killing germs.

Explanation:

cuz im smat as hel

3 0
2 years ago
The thoracic cavity is part of the___ cavity​
Sauron [17]

Answer:

I believe the Thoracic cavity is part of the Ventral cavity

Explanation:

3 0
3 years ago
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Anna is at a phase of attachment where she takes the feelings of others into consideration before acting. According to John Bowl
GalinKa [24]

Answer: 24 months

Explanation:

According to John Bowlby's Attachment Theory, infants go through 4 stages of attachment which are the Pre-attachment phase, Attachment-in-making phase, Clear-cut attachment phase, and Formations of reciprocal relationships phase.

Anna is in the <em>Formations of reciprocal relationships</em> phase which kicks in at around 24 months. At this stage, infants begin to take into account the feelings of others before acting. They are able to understand what refusal means and so can try to hide things they think are wrong so as not to get into trouble.

7 0
3 years ago
What shapes our personality most, nature or nuture and why?
guapka [62]

Answer:

One's personality is shaped by a combination of nature (genetic) and nurture (environmental) influences. Recent studies conducted among birds have demonstrated that environment plays a bigger role in forming personality than genetics, but obviously there are differences when translating these results to humans

Explanation:

   

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2 years ago
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