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3 years ago

Which of the following statements is true?

Biology

2 answers:

zhuklara [117]3 years ago

7 0

Answer:

The regulation of inflammatory responses at the site of infection is an example of paracrine signaling.

Explanation:

Paracrine signaling is a type of signaling where the cell communicates with their neighbor cells through the secretion of the signaling molecules. These signals move by the process of diffusion through the extracellular matrix.

Paracrine signaling helps in many biological activities in the body such as blood clotting, tissue repair, and reaction against allergens. Transfer of signals across a junction between two nerve cells is an example of practice signaling.

Serhud [2]3 years ago

4 0

Answer: b.

Explanation:

Paracrine signalling is a type of cell-to-cell or cell signalling communication in which a cell produces a signal that causes changes in neighbouring cells, altering those cells' behaviour. One example of paracrine signalling is the transfer of signals between nerve cells through synapses.

Paracrine signalling functions are essential to amplifying and regulating an inflammatory response within a organ or tissue, and initiating a coordinated immune response involving different types of cells.

Hence, the correct option is b.

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Which diagram correctly describes the changes that occur as a small piece of rock falls from space and hits the Earth?

umka21 [38]

The answer correct would be c

7 0

2 years ago

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he Punnett square shows the cross for a particular trait between a homozygous dominant parent and a heterozygous parent. What is

Crazy boy [7]

Answer:

50%

Explanation:

Let's make a Punnett square to represent this, with X representing our dominant allele and x our recessive.

One homozygous dominant parent = XX

One heterozygous parent = Xx

X X

X XX XX

x Xx Xx

So two out of our four outcomes are heterozygous for the trait. That means the answer is <u>B. 50%.</u>

5 0

3 years ago

What feature distinguishes this type of capillary from a continuous capillary?

Vitek1552 [10]

<h2>Blood Vessels</h2>

Explanation:

Fenestrated capillaries are "leakier" than ceaseless vessels.
They contain little pores, notwithstanding little holes between cells, in their dividers that take into consideration the trading of bigger particles.
This sort of narrow is found in territories that require a great deal of trade between your blood and tissues.

Function-

<em>Capillaries are exceptionally minor veins so little that a solitary red platelet can scarcely fit through them. </em>
They help to interface your courses and veins in addition to facilitating the trading of specific components between your blood and tissues.
<em>This is the reason tissues that are extremely dynamic, for example, your muscles, liver, and kidneys, have a wealth of vessels.</em>
Less metabolically dynamic tissues, for example, specific sorts of connective tissue.

8 0

3 years ago

Nitrogen is important for _____.

Kisachek [45]

Answer:

Explanation:Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

8 0

2 years ago

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The hypothalamus secretes corticotropin releasing hormone (crh) onto the anterior pituitary to stimulate secretion of

anastassius [24]

For Hypothalamo-Pituitary-Adrenal Axis of endocrine gland secretion, follow the root "CORTI" (C). This will be a great memory tool. Also, nearly all hypothalamic hormones that stimulate anterior pituitary secretion have the word RELEASING (hence "R" in their acronyms). So if asked what secretes CRH, GnRH, TRH, or GHRH... the answer will be the Hypothalamus because of the R.
Now... back to CRH... we're following the "C" for CORTI. What other endocrine hormone has C for CORTI??
ACTH = Adreno[Corti]coTropic Hormone
Which will then stimulate secretion of [Corti]sol (a glucocorticoid), amongst others from the cortex of the adrenal gland. Notice the [Corti] follows the whole pathway from Hypothalamus to adrenal Cortex: Hypothal. (CRH) --> Ant. Pituit. (ACTH) --> Adrenal Cortex (Cortisol)
Sorry this was so long-winded, but I was hoping to help you grasp a portion of how the Endocrine System works!
Good luck and hmu should you have any further Anatomy/Physiology questions.

4 0

3 years ago