What your cells have to help overcome a problem of high activation energy are called enzymes. Enzymes are proteins that lower the activation energy of a reaction. In doing this, enzymes increase the rate of a reaction, helping it to occur faster. However, enzymes are not consumed in a reaction; they simply help it to occur.
Enzymes make things easier for your cells to work properly and help chemical reactions occur. There are hundreds of different kinds of enzymes in your cells, which all participate in different types of reactions. Enzymes can break molecules apart, build or add molecules, and even rearrange them.
In lowering the activation energy of a reaction, enzymes decrease the barrier to starting a reaction. It's important to note, however, that the change in energy remains the same between the start and end of a chemical reaction.
Answer:
Introduction Purpose: Explore the interdependence of organisms by
performing an experiment with lima bean plants and earthworms. Question: How can the presence of one species benefit another in
the same ecosystem?
Hypothesis: If plants grow in soil containing worms, then the
plant growth will be greater, because worms help decompose organic matter and distribute it through the soil in a form that plants can use.
Explanation:
Answer:
Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions.
Explanation:
Answer: The probability is 100%.
Explanation: The chromosome X is related to gender. A man carries two different chromosomes (XY) and a woman carries two similar chromosomes (XX). The offspring of a couple will inherited:
- If it is a boy, he inherites the chromosome Y from his father and X from his mother;
- If it a girl, she inherites X from her father and X from her mother;
In the question, the woman is color-blind, which means she carries the recessive alleles:
The man, on the other hand, is normal, so his X-linked genotype will be: .
Now, since they have a daughter, she inherited her double X from each of her parents, which means she inherited one from her mother and one from her father.
So, the daughter's genotype can only be heterozygotic in other words, the probability is 100%.