Answer:
Stem cell is taken either from bone marrow or from the blood directly
Explanation:
Stem cells are derived from two locations primarily a) Bone Marrow and b) Blood
The first step in this process is to remove the stem cell from its parent location and it is done in the following ways –
A) For deriving stem cell from blood – A drug with growth factor s is injected. Here no anesthesia is given to the patient. The growth factors leads to the movement of stem cells from bone marrow into the bloods. Blood with stem cells is taken out from the veins and filtered through the apheresis machine.
B) From Bone marrow – Bone marrow is removed from the pelvic bone through a needle and prepared for transplantation.
<span>The complete statement is this: 'An increase in food and a decrease in predators would most likely increase genetic variation in a population. An increase in available food is an environmental factor which brings about genetic variation in the population of a specie.</span><span />
Answer:
1. B
2. A
Explanation:
According to this question, a student is trying to decide which kind of bottle to purchase, however, he is considering the kind that will have lesser negative impact on the environment and society. The plastic bottle is easy to use due to their convenience and light-weight but they are DISPOSABLE. On the other hand, metal bottles are reusable and keeps water longer.
In accordance to the student's heart for the sustainability of the environment, he should choose the METAL BOTTLE because the metal bottle is RECYCLABLE i.e. can be reused. Recycling of most materials has been encouraged in order to curb the spread of non-biodegradable materials like plastic that can serve as pollutants to the environment.
Answer:
1. organism
2. complexity
3. function
4. mitochondria
5. tissue
6. epithelial tissues
7. enzymes, hormones and fluids
8. spinal cord
9. -
10. respiratory system
11. structure
12. temperature
Explanation:
Answer:
During the Krebs cycle, pyruvic acid from glycolysis is used to make carbon dioxide, NADH, ATP, and FADH2. ATP NAD+ NADH Citric acid is broken down into a 5-carbon compound, then into a 4-carbon com- pound. Along the way, two more molecules of CO2 are released, and electrons join NAD+ and FAD, forming NADH and FADH2.
