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algol13
2 years ago
5

What are stem cells? Where do stem cells come from? Why are they important?

Biology
1 answer:
irakobra [83]2 years ago
4 0
Stem cells are cells of the body that can divide and become differentiated. stem cells specialise and take specific functions when an organism grows
mature tissues such as muscle, blood, tissue, bone, nerves, liver all have different types of cells.

they come from three to five day old embryo cells.

they represent potential in the regeneration and repair of damaged tissue. some therapies actually currently use stem cells for this reason
You might be interested in
Three students attempt to define what a circle is. Can you match the teacher's comments to the definitions?
Alborosie

This question is incomplete, the complete part of the question containing the students definition and teacher's comment is:

Ruby's definiton: A 3-dimensional shape whose boundary consists of all points equidistant from a fixed point (the center).

Shriya's definition: The set of all points in a 2D plane such that for every point in the set there is exactly one other point in the set that is d (call it diameter) units away.

Abhishek's definition: The set of all points in a plane that are the same distance (radius) away from some given point (center).

Teacher's comments:

Are you thinking of a sphere?

You are correct. Nicely done!

This is incorrect. For example, your definition also allows for the following shape, which is just part of a circle.​

THE ANSWERS ARE:

Ruby's definiton: Are you thinking of a sphere?

Shriya's definition: This is incorrect. For example, your definition also allows for the following shape, which is just part of a circle.​

Abhishek's definition: You are correct. Nicely done!

Explanation:

A circle is a two-dimensional round plane shape (2D shape) whose boundary line called the circumference has several points that are of the same distance (radius) from the centre point of the shape.

Based on this definition of a circle, the answers given by each students will now be reviewed.

1). Ruby's definiton: This definition is wrong because a circle is not a 3D shape. The definition is describing more of a SPHERE, which is a 3D round shape in a space. Hence, the teachers comment will appropriately be; Are you thinking of a sphere?

2.) Shriya's definition: This definition is wrong because it is not describing a circle, rather it is describing a part of a circle (diameter). Hence, the teachers comment appropriate for this answer is: This is incorrect. For example, your definition also allows for the following shape, which is just part of a circle

3). Abhishek's definition: This definition correctly describes a circle, hence, the teacher's comment will be: You are correct. Nicely done!

5 0
3 years ago
What can get cancer and what must it have in order to get cancer?
Zigmanuir [339]
Everyone could get cancer, most likely people who has a bad immune system, cancer develop when cells starts to reproduce in a certain way. There’s different types of cancer.
3 0
3 years ago
How does sediment loss affect land and soil quality
ipn [44]
It makes the soil not as thick due to the loss of sediments and it cant hold near as much nutrients to keep up with the plant life 

8 0
2 years ago
12. Integral proteins are located
adelina 88 [10]

Answer:

Integral membrane proteins are permanently embedded within the plasma membrane. They have a range of important functions. Such functions include channeling or transporting molecules across the membrane. Other integral proteins act as cell receptors

Explanation: HOPE U GET AN A HAVE A GREAT DAY!!!

6 0
3 years ago
A study was conducted in a nursing home to examine the association of hand-washing and Gastroenteritis. Residents with the disea
cupoosta [38]

Answer:

The correct answer is case control study.

Explanation:

A study in which a comparison is made between the patients carrying the disease with the patients not carrying the disease is known as the case-control study. In the mentioned study, the one carrying the disease is termed as cases, and the one that does not possess the disease is termed as controls.  

This form of study is generally done to predict the association between the disease and the risk factor. In case-control studies, only observation is done as no attempt is made to change the course of the condition. The prime objective of the study is to predict the exposure of the risk elements for the individuals present in two groups, that is, controls and cases. This form of study is also called case-referent studies or retrospective studies.  

4 0
3 years ago
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