1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darya [45]
4 years ago
11

"During embryonic development red blood cells begin to develop in patches called blood islands. The blood cells secrete growth f

actors that diffuse only to nearby cells, signaling differentiation into endothelial cells. The endothelial cells eventually form the linings of the blood vessels." The growth factor described in the passage is involved in what type of signaling?a. Autocrine
b. Paracrine
c. Endocrine
d. Juxtacrine
Biology
1 answer:
Elanso [62]4 years ago
7 0

Answer:paracrine

Explanation:glands are specialized tissues that secrete specific chemicals substances.these substances may be enzymes,hormones or lubricating fluid.glands secretes their their products through several mechanisms.some involve the use of ducts ,while others do not.

In paracrine secretion,the secretory products reach their target cells by diffusion through the extracellular space or adjacent connective tissue.

Paracrine secretion do not use ducts.

Similar to paracrine is the endocrine ,in which the secretory products goes through the basal lamina ,into the underlying connective tissue and into the vascular syatem.they too do not use ducts

You might be interested in
Where does a vulture obtain his energy
kondor19780726 [428]

Vultures obtain energy from scavenging.


Hope this helped!

6 0
3 years ago
If your sample does not grow on the plate in the anaerobic chamber but does grow in the presence of oxygen, it produces bubbles
jasenka [17]

Answer:

it is an obligate (or strict) aerobe

Explanation:

By whether an organism requires oxygen or not for respiration. We can classify it as either aerobic or anaerobic.

Aerobic organisms require oxygen and anaerobic do not.

For aerobes, it can be facultative or obligate. Facaltative aerobes require oxygen but they can however switch to fermentation when oxygen is not available.

Obligate aerobes are aerobes require oxygen for cellular metabolism.

In the test the dextrose tube remained yellow because fermentation had not taken place.

Therefore we can conclude the sample contained an obligate aerobe which was catalase positive since it produces bubbles when Hydrogen peroxide was added.

6 0
4 years ago
A thick black cloth that forms a barrier to weeds and holds down erosion is called ?
Ipatiy [6.2K]

Answer:

Landscape fabric, weed barrier and weed barrier fabric are names for the same product. It is a black mesh type of plastic that is used extensively in landscaping to keep weeds out of your garden.

8 0
3 years ago
Read 2 more answers
Why do atoms form bonds with each other?
andreyandreev [35.5K]

Answer:

g

Explanation:

8 0
3 years ago
Bryophytes are also called
Pie
They are also called "Land Plants" that are non-vascular!

Hope this helps!
4 0
3 years ago
Other questions:
  • In a sexually reproducing species evolution could occur as a result
    8·1 answer
  • Organisms living in the deep bathypelagic and abyssopelagic zones require oxygen for respiration. What process brings oxygen fro
    5·1 answer
  • What does it mean when plants and fungi are inmobile?
    8·1 answer
  • 100 POINTS!!!!
    5·2 answers
  • 1. Which of the following is most likely to be observed by a physiologist?
    8·1 answer
  • The survival of any species depends on variation among its members. Which of the following prodcues the LEAST variation in a spe
    7·1 answer
  • Deficits in the functioning of the brain's _____ are associated with aggression.
    6·1 answer
  • BRAINLIESTTT ASAP!!
    15·2 answers
  • Which parts of photosynthesis occur in the stroma
    12·1 answer
  • Answer this one ABC or D
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!