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
lorasvet [3.4K]
3 years ago
15

From where do the placenta and umbilical cord develop?

Chemistry
2 answers:
Anastasy [175]3 years ago
8 0
It’s either the first or second one

I think it’s the first one - the outer cells of the blastocyst
frozen [14]3 years ago
5 0

Answer:

When an egg is fertilized, it divides into two components — one becomes the embryo, which develops into the fetus, and the other becomes the placenta, which grows along the lining of the uterus. The umbilical cord develops from embryonic tissue and will grow about 60 centimetres long.

The umbilical cord develops from and contains remnants of the yolk sac and allantois. It forms by the fifth week of development, replacing the yolk sac as the source of nutrients for the embryo.

OR put simply

A, the oyster cells of the blastocyst.

You might be interested in
There are seven petals on that flower.<br> O<br> qualitative<br> quantitative
Dahasolnce [82]
Hey :)


This time the answer is quantitive because the mentions numbers

Hope this helps!
3 0
3 years ago
Read 2 more answers
suppose that you are comparing several objects. is it correct to say that the object with the largest volume has the largest mas
Semmy [17]

Answer:

No

Explanation:

It is not correct to say that an object with the largest volume has the largest mass.

Mass and volume are not directly related. In fact, the relationship between them can be direct or inverse.

Mass is the amount of matter in a substance. Volume is the space a body occupies.

  • A balloon and a stone for example is a typical one.
  • A balloon has more volume but far lesser mass compared to a stone.
  • A stone, gravel sized has low volume but more massive than a balloon.

Therefore, it is wrong to say a balloon has more mass because it has more volume.

3 0
2 years ago
Select the correct answer.
almond37 [142]

Answer:

D. 5 moles

Explanation:

C3H8 + 5O2 → 4H2O + 3CO2

            5 mol                 3 mol

So, to make 3 mol CO2    5 mol O2 are needed.

3 0
3 years ago
How many formula units are in<br> 35.0 g KNO3?<br> (KNO3, 101.11 g/mol)<br><br> [?]×10¹²] fun KNO3
alina1380 [7]

mol=35:101.11 g/mol=0.346

formula units = 0.346 x 6.02 x 10²³ = 2.082 x 10²³

3 0
2 years ago
Please help and match them
alina1380 [7]
The answers from top to bottom right to left are
3,1,2,4
7 0
2 years ago
Other questions:
  • An unknown solution has a ph of 8. how would you classify this solution?
    14·1 answer
  • If you wanted to design an experiment to show that the solubility of sugar in tea varies according to the temperature, what vari
    12·2 answers
  • Creating a prototype and troubleshooting o
    11·2 answers
  • Salt solutions can be __________ to give solid salts. What word completes this sentence?
    14·1 answer
  • Can someone help me
    8·2 answers
  • a sample of gas with a volume of 2.0 L at STP is found to have a mass of 1.43 g calculate the molecular mass of this gas. is it
    12·1 answer
  • 7. How many chlorine atoms are in a 34.2 g sample of dichlorine pentoxide?
    8·1 answer
  • What is the definition of an atmosphere? a portion of the electromagnetic spectrum that makes the sky look blue the blanket of g
    5·1 answer
  • Counting atoms pls someone help me
    13·1 answer
  • Suppose that a 10-mL sample of a solution is to be tested for I− ion by addition of 1 drop (0.2 mL) of 0.13 M Pb(NO3)2.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!