Answer:
B. The findings are not meaningful or valid because of the way she designed her study.
Explanation:
In a scientific experiment, a control group is a group of individuals/subjects that do not receive the experimental treatment. The control group is used to determine how much of an impact a treatment (in this case, cadmium intake) has on the variables being examined in the participants who are subjected to the experimental treatment. In any experiment, it is imperative to include a control group in order to validate experimental results. In this case, it is not possible to confirm that the loss of weight and abnormal hormone levels are due to cadmium uptake because only a control group would elucidate the contribution of cadmium intake on the variables being tested.
Bones are hard because they are made up of bone marrow and muscles are soft because they are muscles
Answer:
A contractor who hired two sub-contractors to help work on the house would be most like to osteoblast.
Explanation:
Osteoblasts are cells that build bone, just like contractors build a house. They are cells capable of synthesizing the bone matrix, allowing the formation and growth of bone.
As bone-forming cells, osteoblasts have a large number of mitochondria and a developed Golgi apparatus. They can multiply until they are covered by the bone matrix, becoming known as osteocytes.
The other options are not correct because:
- <em>Osteogenic
: related to bone.</em>
- <em>Osteocycle
: bone cell in its mature shape.</em>
- <em>Osteococlast : cells capable of remodeling the bone, breaking it and allowing the action of the osteoblasts.</em>
This is really a subjective answer. If given the choice to either give the lung to a six-year old lung cancer patient or the heavy smoker, I would choose the six-year old.
If I had to choose between car crash victim on a lung machine or the heavy smoker, I would choose the car crash victim.
If I had to choose between this heavy smoker and a young smoker that developed lung cancer, I would choose the young smoker and hope that he/she would change his/her habits and quit.
I bet you're starting to see the point I'm making. Hope this helps!
True. Having HIV connotes gay sex or sex with prostitutes. Both of these types of sex are stigmatized heavily. STDs in general stigmatized, but HIV is especially taboo.
