Answer:
False.
Explanation:
Up regulation involves the increase of receptors and it makes the cells more sensitive to the hormones.It's the down regulation that involves the loss of receptors and prevents the target cells from overreacting to persistently high hormone levels.
Every single thing in your home that's plugged into a wall outlet or works with a switch on the wall . . . every lamp, ceiling light, room fan, computer, microwave, stove, hair dryer, coffee pot, toaster, slow cooker, TV, home entertainment system, printer, wifi router, cordless phone, phone charger, and clock radio ... they're ALL in parallel.
<u>And</u> chances are that everything in your house is also in parallel with everything in the houses of a few of your neighbors on each side of you.
THAT's how parallel circuits are used in residential areas.
Answer: Yes, it can be a single, ordinary star.
Explanation: To determine a mass of a star, we use the orbital speed formula, given by: v =
, where
v is the speed;
G is a constant: G = 6.67*

M is mass of a massive object;
R is the distance between the object orbiting and the massive object;
The formula can be rewritten as:

First, we change R from light years to km:
1km=1.057*
R= 
Calculating mass:
M = 
M = 4.25*
kg
A solar mass is the standard unit of mass. It is approximately 2*
Kg and can be used for comparison: A single star cannot be more than 50 solar masses.
50 solar masses = 50*2*
=
kg
Comparing the mass of the object with this parameter, we have
= 0.235.
= 2.35.
From this, we know that 50 solar masses is greater than the small, massive object found. So, this object can be a single, ordinary star.