Answer:
A
Explanation:
Cardiovascular diseases involves the heart.
Any of the above options with regards to blood (etc, white blood cells, red blood cells) are related to circulatory system, not affecting the function of the heart.
Stem cells performing apoptosis to remove old cells is a myth. Stem cells can only differentiate to form cells of the same lineage, not causing other cells to undergo apoptosis. The only external factor that can cause cells to undergo apoptosis is a type lymphocyte in the immune system
Phosphoglycerate kinase does not catalyze an irreversible process in glycolysis under normal cellular circumstances.
Discussion about glycolysis:
- Ten stages make up the glycolysis process, seven of which are reversible and three of which are practically irreversible. These are the first, third, and final stages that are successively catalyzed by hexokinase, phosphofructokinase, and pyruvate kinase.
- During the glycolysis process, glucose 6-phosphate is changed into pyruvate. Everything that happens is cytoplasmic. Fructose 6-phosphate is created by reversible isomerization of glucose 6-phosphate. Physiologically irreversible fructose 6-phosphate phosphorylation to fructose 1,6-bisphosphate is performed by phosphofructokinase.
Hexokinase, phosphofructokinase-1, and pyruvate kinase conduct nearly irreversible events during glycolysis, hence one would anticipate that these enzymes have both regulatory and catalytic functions.
So, option d i.e., phosphoglycerate kinase should be the appropriate response.
Learn more about glycolysis here:
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Answer:
1:(D), 2:(D), 3:(D)
Explanation:
1) When a rock is exposed to heat and pressure, it becomes a metamorphic rock. This is correct, because this is the process that forms a metamorphic rock.
2) A rock becomes sediment through weathering and erosion. In this question, they are not asking you to explain the process of sedimentary rock formation, they are asking you how a rock becomes sediment. The process of weathering and erosion breaks down a rock, and turns that rock into smaller peices, which therefore, through the process of compaction and cementation forms a sedimentary rock.
3) A fern is a land plant. It is not found in the sea and there is not enough information given to tell whether or not the area was hot or cold. This leaves us with D. We can tell that this fossil is a land fossil because ferns do not grow in the ocean.
Hope I could help, and best of luck!
- Cat :')
Answer:
Pathogens cause infection by entering the organism and infecting a host in order to reproduce. As they replicate themselves, the pathogen spreads and becomes more harmful. The immune system consists of lymphocytes and phagocytes which help kill the pathogen. The lymphocytes produce antibodies which can latch on and destroy invading viruses or bacteria. The phagocytes have the ability to ingest the pathogen by engulfing it.
Hope this helps!
