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
amid [387]
3 years ago
15

All arteries except pulmonary artery carry pure blood. Why?

Biology
1 answer:
Marysya12 [62]3 years ago
7 0

Answer:

All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..

Explanation:

lumen means Empty space within an object(solid)

hope this will help you mate✌✌

keep asking me the questions of Science..

please do follow me

You might be interested in
The student is working on a project that requires light to pass through a series of lenses which of the following materials shou
Lyrx [107]

Answer:

The correct answer would be acrylic glass.

It can be explained with the help of refractive index.

It is a dimensionless number used to describe that how fast a light can propagate through a material.

Thus, the more the refractive index the more will be the bending.

Acrylic glass has the least refractive index as compared to the other materials provided.

Thus, the light would bend the least if acrylic glass would be used.

4 0
3 years ago
Which of the following balances is affected by the local force of gravity?
egoroff_w [7]
Analytical balance is your answer 
3 0
3 years ago
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Wh
Molodets [167]

Options for part A are as follows:

A) A mutation in the operator sequence

B) A mutation in the lac-Z gene

C) A mutation in the lac-Y gene

D) A super repressor mutation

Answer:

The correct answer:

Part a - A mutation in the operator sequence

Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part C. true.

Explanation:

part a:

If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.

part b:

The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part c:

RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.

4 0
3 years ago
PLEASE HELP ME ASAPPPPPP!!!!!!!! GIVING 13 POINTS AWAY!!
djyliett [7]

Answer:

B

Explanation:

4 0
3 years ago
Complete the sentences.
Galina-37 [17]
I hate IREADY but 2 pounds cost 15
5 0
3 years ago
Read 2 more answers
Other questions:
  • Dan ""threw out his back"" after lifting heavy furniture and complained of pain radiating down the back of his right leg. Use an
    6·1 answer
  • What is not a a form of passive transport
    5·1 answer
  • What is the process in which bacteria take up pieces of DNA from their environment?
    13·1 answer
  • Does the machanical energy of an apple falling from a tree change​
    11·1 answer
  • What is the principle pigment of plants?
    14·1 answer
  • Which substance do plant cell walls have that bacterial cell walls lack?
    7·1 answer
  • If you had a way of looking into the nucleus of a cell and visually inspecting the genetic material you would see the following:
    6·1 answer
  • When blood vessels narrow, they help increase blood pressure. Thinking only about smooth muscle in the arms, you know that Selec
    10·1 answer
  • 36. From which view, dorsal or ventral, can you see the location of the appendages on the segments
    15·1 answer
  • The gravitational pull between two objects depends on their mass and distance. What is meant by distance?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!