What is the effect of an enzyme on the energy of a chemical reaction
it increases speed of chemical reaction
Enzymes are proteins that speed up chemical reactions by lowering the activation energy, or the energy required for a reaction to take place. This makes reactions happen more efficiently and quickly.
An enzyme is a type of protein that accelerates, or catalyzes, chemical reactions. In relation to their effect on the energy of a chemical reaction, enzymes lower the activation energy. The activation energy is the energy threshold that must be met in order for a chemical reaction to occur. By decreasing this energy barrier, enzymes facilitate the process and make it proceed faster than it would without the enzyme.
For example, let's take the digestion of food in your body. The enzymes present in your digestive system speed up the chemical reactions that break down large food molecules into smaller units. This is because these enzymes reduce the activation energy required for these reactions, enabling the reactions to happen more efficiently and quickly.
Keiko’s teacher was discussing the theory of endosymbiosis. She asked Keiko to mark the organelles in the diagram that most closely resembled prokaryotes. Which organelles should Keiko mark?
The correct answer would be mitochondria or chloroplast.
Endosymbiosis refers to the evolution theory which explains the origin of eukaryotic cells from prokaryotic cells.
It is believed that cell organelles like chloroplast, mitochondria et cetera were free-living early prokaryotic cells which were taken inside the other cells by the process of endosymbiosis. It led to the origin of eukaryotic cells which were able to perform photosynthesis.
Thus, Keiko should mark chloroplast or mitochondria in the diagram.
Which of the following is the semi-fluid transition zone of the mantle between the lithosphere and the mesosphere?Asthenosphere Atmosphere Biosphere Geosphere
The correct answer is A. Asthenosphere.
The earth is composed of three large layers: the nucleus, the mantle, and the crust. However, there are more layers within the main layers; in the case of the the asthenosphere, this is a layer of semi-molten materials that is located under the lithosphere (50 to 150km of depth) and has a thickness of around 650km. Additionally, this is located above the mesosphere, another layer of the crust that is part of the mantle, and extends to approximately 2700km deep. Additionally, this layer serves as a transition between the lithosphere and the mesosphere which are two major layers. So, the correct answer is A. Asthenosphere.
I’m guessing asthenosphere
explain the scientific theory of evolution and the evidence scientist found that proves it to be valid ?
There are many theories
But main evidences are
Fossils of Plants animals and other organisms who lived on this planet at sometime.
Oprain And Halden theory which suggests the chemical and biological evolution.
How are a carrot, an amoeba, and a mandrill. alike
A carrot, an amoeba (a cell/organism that has the ability to change shape), and a mandrill (a primate) are all alike in that they are all eukaryotes. This means that their cells share the same features of having a nucleus and other organelles within an enclosed membrane.
Which three organization levels are in a human stomach?Muti choice 1) cell 2)organ 3)organ system 4)organism 5)tissue
Cell, tissue, and organ.
A cell is an obvious one because it makes up the tissue, and it is needed in order to form an organ. Meaning tissue and cell would have to be included. Tissues witch are made of many cells form an organ, and an organ would be the human stomach/digestive system. It can't be organ system because a stomach can't be a whole system including the heart and ect. It can't be organism because a stomach isn't enough organ systems to create an organism.
Cell Organ System Organ
cells make up everything as a building block of life.