Check answer

in creating a replacement organ using stem cells, a doctor first creates a replica of the patients current organ. this is necessary to

a) induce the stem cells to grow in the proper tissue and organ type.
b) induce the stem cells to create an organ of the appropriate size and shape. ** my choice **
c) mimic the conditions within the patient's body, allowing the stem cells to survive.
d) occupy the space of the old organ while the new organ is being transplanted.

Option B, induce the stem cells to create an organ of the appropriate size and shape

Explanation:

In stem cell research, it is found that organs that are designed of accurate shape and size are not rejected by the immune system of the body and hence before making any real organ of the body , doctors usually try to use a scaffold to carve a basic look a like structure. Since stem cells have the capability to grow into any type of cell it is essential for the doctors to provide right environments and scaffold for creating a replica of an organ for immune effective transplant so that the receiver patient is not required to take medicines for it.

Hence, option B is correct

0.2 km/m east

Explanation:

The magnitude of Walt's velocity is given by:

where

s is Walt's displacement

t is the time taken

In this problem, Walt's displacement is s=5 km, while the time taken is t=25 m, so the velocity is

and the direction is east, since Walt is running eastwards.