The lock-and-key model of enzyme function shown in the image below, illustrates which important characteristic of enzymes?


Enzymes only fit with a specific substrate

Enzyme structure changes

Enzymes bind to any reactant

Enzymes work with any substrate

Answer:

chromosome number 21

Answer:

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Answer:

46 chromosome

Explanation:

No. Of chromosomes in Egg are : 23

No. Of chromosomes in Sperm are : 23

So when they fusion, give 46 chromosome

Answer:

The disordera of digestive system are :-

•Gastroesophageal Reflux Disease (GERD) Heartburn happens, but if it occurs regularly, you may need to be evaluated for GERD.

•Chronic Diarrhea.

•Chronic Constipation.

•Gastroenteritis.

•Ulcers.

•Hemorrhoids.

Explanation:

Hope it is helpful...

Answer:

Explanation:

Algunos problemas comunes incluyen acidez gástrica, cáncer, síndrome del intestino irritable e intolerancia a la lactosa. Otras enfermedades digestivas incluyen: Cálculos biliares, colecistitis y colangitis.

Answer:

the science of life

Explanation:

The science of life

Answer:

When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.

Answer:

e. Antibody production

Explanation:

The correct action that Lloyd should recommend to his partner who was looking down into the test tube if heating must continue would be to move the test tube so that the opening is pointing away from all students.

Hence, the most correct action would be for Lloyd's partner to move the test tube so that the opening is pointing away from all students.

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Answer:

Move the test tube so that the opening is pointing away from all students.

Answer:

C ) A sperm cell

Explanation:

These cells are our sex cells – sperm in males, eggs in females. During meiosis one cell divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes of the parent cell – they are haploid. Meiosis produces our sex cells

Explanation:

Answer:

For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/weathering/

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.

Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering. Rocks, such as lavas, that are quickly buried beneath other rocks are less vulnerable to weathering and erosion than rocks that are exposed to agents such as wind and water.

For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain.

Explanation:

The Trait Theory states that personalities are made up of distinct characteristics and qualities. These characteristics partially influence behavior.

Secondary: these traits are related to attitudes or dispositions in certain situations and experiences.

• I guess it's correct; if not then m sorry!

The molecule which has likely been removed or mutated from a cell that can form beads on a string chromatin, but not solenoid fibers is: A. Η1

A cell can be defined as the fundamental functional, structural and smallest unit of life for all living organisms.

Genome editing refers to a high-tech process through which scientists remove (delete), replace or insert a deoxyribonucleic acid (DNA) sequence into the cells of a living organism such as an animal, bacterium, plant, etc., so as to improve on its physical and chemical conditions or correct a genetic disorder.

Chromatin can be defined as a complex form of deoxyribonucleic acid (DNA) and protein found in the cells of an eukaryotic organism.

In the classic model of chromatin, the beads simply refer to the nucleosomes while the string is simply the linker deoxyribonucleic acid (DNA).

Basically, the deoxyribonucleic acid (DNA) is wrapped around histone proteins to form nucleosomes and the beads on a string structure (euchromatin).

Furthermore, there exists a linker histone H1 in addition to core histones that reaches the entry or exit of the deoxyribonucleic acid (DNA) strand on the nucleosome.

In conclusion, a cell cannot form beads on solenoid fibers but it can form beads on a string chromatin because the H1 molecule has likely been removed or mutated in the cell.

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Answer:

Hey friend

how can I help you

Answer:

it is true..they contain cholestrol and triglycerides.

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Answer:

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The hydrogen bond is one of the strongest intermolecular attractions,

Answer:

7

1

We usually get some questions about how many hydrogen bonds these compounds can create, we use it to differentiate between the boiling point of each one of them so it would be great if you could help me.

So what I know that H2O has 4 hydrogen bonds those are 2 from hydrogen atoms and 2 from other molecules that has 2 hydrogen atoms connected to the 2 lone pair of electron that the oxygen has.

In HF, It has 2 hydrogen bonds. The same explanation implies here. In NH3, 2 hydrogen bonds because N doesn't have the required amount of lone pairs to make more hydrogen bonds.

Explanation:

Answer:

Unicellular organisms

Answer:

The process by which green plants and some other organisms in the presence of sunlight to synthesize nutrients from carbon dioxide and water is called photosynthesis.

Answer:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Explanation:

......

Answer:

Hydrogen chloride, carbon monoxide, or nitric oxide do all have diatomic molecules. In essence, what that means is that they are all gasses at room temperature. Because their atomic nuclei have its origin in different elements, scientists refer to them as heteronuclear.

Explanation:

Explanation:

in short answer,

advantages :

- more green more fresh air

- we are lack of rainforest these days, this is one way to taking care of greens by making it.

disadvantages :

- still require environmental damage for building the building itself, toxic waste and so on

- required $$$$ to buy the plants or seed itself

Answer:

branch of knowledge that studies the natural world to gain knowledge and understanding

The statement which best describes science is; Choice A; Branch of knowledge that studies the natural world to gain knowledge and understanding.

Science, put simply is the branch of knowledge that studies the natural world to gain knowledge and understanding. This branch of knowledge can be further subdivided into

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Answer: extra currents in the ground will disrupt power grid operations and  high-frequency radio waves used for radio communications will be blocked

Explanation:

In the case of a severe geomagnetic storm, extra currents on the ground will disrupt power grid operations and signals from radio navigation systems will be disrupted and be inaccurate.

A geomagnetic storm is caused by a CME (coronal mass ejection) from the sun that smacks against the earth's magnetic field and causes issues such as

Etc.

Extra currents in the ground caused by the geomagnetic storm will disrupt power grid operations. We can also expect a disruption of all radio signals and communications due to changes in the ionosphere during the storm.

Satellites in the Earth's orbit would likely sustain critical damage and may be rendered inoperable, however, since satellites do not use technology to stay in orbit (this is done by the earth's own gravity) they will not fall to the surface, which is why this option is wrong. The final option is also wrong because high-frequency radio waves used for radio communications will be disrupted and unreliable but not blocked.

That is why In the case of a severe geomagnetic storm, power grid operations and signals from radio navigation systems will be disrupted and be inaccurate.

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Answer:

Clean, wrinkle-free, scrubs should be worn by all medical personnel with the occasional exception of veterinarians, who may need to wear business casual or professional business clothing underneath their white coats instead.

Explanation: