Saliva, produced by glands in the mouth, plays an important role in the digestion of food. Saliva contains a chemical, called amylase, that breaks down starch in the food we eat. A scientist conducts an experiment to investigate at which temperatures amylase works the best. He hypothesizes that the reaction will occur fastest if the amylase reaction is conducted near the normal human body temperature of 37ºC (degrees Celsius). In order to test his hypothesis, the scientist measures the reaction rate, which is how fast the amylase breaks down the starch at six different temperatures. The reaction rate is rated on a scale of 0 to 10, with 0 meaning no reaction and 10 meaning the fastest reaction. The results are recorded in the data table.

AMYLASE REACTION RATE BY TEMPERATURE

Temperature (ºC)

Reaction Rate

0

2

20 4
40 10
60 8
80 2
100 0
Based on the data, should the scientist accept or reject his hypothesis?
A He should reject the hypothesis because amylase reacts at all temperatures.
B He should accept the hypothesis because amylase reacts only at body temperature.
C He should reject the hypothesis because amylase reacts faster above body temperature.
D He should accept the hypothesis because amylase reacts fastest near normal human body temperature and slower above and below normal human body temperature.

Answers

Answer 1

Based on the data, he should accept the hypothesis because amylase reacts fastest near normal human body temperature and slower above and below normal human body temperature.

The correct option is C.

What is the rate of a reaction?

The rate of a reaction is the rate at which reactant molecules are used up or the rate at which products are formed.

In the body, the molecules that speed up the rate of the reaction occurring in the body are called enzymes.

Enzymes are mostly proteins and thus, are easily denatured by heat.

Enzymes function best at temperatures close to the body temperature of  37ºC (degrees Celsius).

An example of an enzyme is amylase found in saliva.

Amylase is responsible for the digestion of starchy foods.

Based on the results of the experiment conducted by the scientist, it can be concluded that his hypothesis is correct.

Learn more about enzymes at: https://brainly.com/question/14577353

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trees
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Bacteria and fungi not sure though sorry

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Larynx, Pharynx and lungs

pls help i need answer asap! The digestive system is a group of organs working together to convert food into energy and basic nutrients that are transported throughout the body. Food passes through a long tube inside the body known as the alimentary canal, made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Once food is chewed, the bolus is moved into the stomach for further digestion. Examine the Interconnections chart and select the body system that is responsible for moving the food from the start to the finish of the digestive system.
A) nervous system
B) muscular system
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Answer:

B) Muscular system

What do you need to create a chemical bond?

Answers

A chemical bond is a force of attraction between atoms or ions. Bonds form when atoms share or transfer valence electrons. Valence electrons are the electrons in the outer energy level of an atom that may be involved in chemical interactions.

Answer:

A strong chemical bond is formed from the transfer or sharing of electrons between atomic centers and relies on the electrostatic attraction between the protons in nuclei and the electrons in the orbitals. The types of strong bond differ due to the difference in electronegativity of the constituent elements.

Explanation:

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4. Explain why the cave appears black.

Answers

Answer:

Caves normally apear black. Yes, this is because in a cave there are no natural sunlight or lights in a cave. For example, If your room was all dark it would look black...yes. Same with a cave! It will appear black as well. So, as you can see, Caves appear black because it is so very dark inside no lights nothing. So that is why it looks black.

Explanation:

Hope this helps!

None of this is copied or pasted!

Have a great day!!!

-Lea.

where do you see collision in a roller coaster ride?

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Answer:

i dont think that happens very often

Explanation:

which major processess were needed for the origin of life on earth

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Organic molecules produced from spontaneous synthesis or from meteorites

Genotype

YYPP
YyPP
yyPP
|YYPP
ҮyPp
ууРp
YYpp
Yypp
Уурр


phenotype:

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Answer:

You named the list for the genotype but not for the phenotype

6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents. plzz give me the anser ill give the brainliest

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Answer:

Test 3

Explanation:

Im working on the same assignment with the same question for online school and when it asked me that question i clicked test 3 and it said correct :)

HELP!!! 50PTS!!! AND WILL BE MARKED BRAINLIEST!!!

Which of the following best describes biochemical evidence that would not support the modern concept of evolution? (4 points)
A bacterium that uses inorganic materials to produce energy
An organism that does not undergo cellular respiration
A species of bacteria that is capable of photosynthesis
An organism that undergoes both aerobic and anaerobic respiration

Answers

Answer:

I also think correct answer is a.

Answer:

a bacterium that uses inorganic materials to produce energy

Explanation:

when a plant forms glucose molecules, what is its source of carbon atoms

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Carbon dioxide (CO2)

Imagine a population of moths. White moths are easier for birds to see and eat. Black moths blend into their surroundings, so they are less visible to birds than white moths. As a result, black moths are more likely to survive and reproduce, enabling the gene for black coloration to be passed on to the next generation. This increases the frequency of genes for black coloration in the population. Which evolutionary process does this scenario describe

Answers

Answer:

The correct answer is - natural selection.

Explanation:

Natural selection is a process of adapting according to the environmental change in order to survive and reproduce and increase their number. It is represented by Darwin for the first time. Natural selection leads to evolution.

In this case, White moths adapt according to the environment by increasing the population of black moths in order to blend with the surrounding and as the result, black moths are more likely to produce and survive and passed this trait to the next generation.

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If your parents are the P generation, what generation are you?

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Answer:gen z

Explanation:

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Dead. Pickles don’t have brains
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if you have the gene for hemophilia, will you always have hemophilia?

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Answer:

most likely

Explanation:

most likelyeeeeee :)

which of the following scientists can be identified as a taxonomist?

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Answer: Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world. Using morphological, behavioral, genetic and biochemical observations, taxonomists identify, describe and arrange species into classifications, including those that are new to science.

Earth and Venus are almost identical....

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Answer:

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Are u making a statement or asking

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B. blade
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Answers

Answer: c

Explanation:

the roots absorb water and minerals from the soil and anchor the plant in the ground.

El aparato digestivo de los cocodrilos, adaptado para ingerir una gran variedad de presas es una adaptación de tipo?

Answers

La respuesta correcta para esta pregunta abierta es la siguiente

A pesar de que no anexaste opciones o incisos para responder, podemos comentar lo siguiente.

El aparato digestivo de los cocodrilos, adaptado para ingerir una gran variedad de presas es una adaptación de tipo evolutivo morfológico.

Esto significa que a través de los años, la evolución de los cocodrilos los ha llevado a ajustar sus órganos, tal y como es el caso del aparato digestivo.

Esta capacidad de adaptación es una de las tantas maravillas de la naturaleza que permite la adaptación de los organismos de los animales a las necesidades que tienen y los hábitats donde viven, para que puedan sobrevivir cazando los tipos de animales que comen para poder sobrevivir en sus estados naturales.

The walls of the human heart are made of a specialized form of muscle tissue known as cardiac tissue. This cardiac, or heart, tissue contracts the chambers of the heart to cause rhythmical beating and blood circulation.


Tissues in the human body, such as cardiac tissue, are made up of

A.

nerves.

B.

blood.

C.

organs.

D.

cells.



please help meee

Answers

Answer:

d. cells

cardiac tissue are made up of cells.

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Answers

Answer:

Ninguna de las dos. No ocurre ni mitosis ni meiosis.

Probablemente haya ocurrido fisión binaria/bipartición.

Explanation:

En este caso estamos hablando de bacterias, organismos unicelulares procariotas. Estos tienen una forma de reproducción asexual denominado fisión binaria. Los eucariotas por su parte pasan por periodos de división celular implicada en el crecimiento denominado mitosis, y división celular implicada en reproducción sexual, denominada meiosis.

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Ambas, mitosis y fisión binaria, implican un duplicado de material genético. El ADN se duplica y una copia va a cada célula hija. Lo mismo sucede con el resto del contenido celular. Finalmente ocurre citocinesis. Sin embargo, a diferencia de la bipartición, la mitosis requiere de mecanismos mucho mas complejos de duplicación celular e involucra también a la cariocinesis, ausente en bacterias.

La fisión binaria ocurre muy rápidamente, en un breve período de tiempo puede hallarse una diferencia considerable en la cantidad de células presentes en un sustrato, producto de esta división. Es por esto que el crecimiento que exhiben las bacterias como población, sigue un modelo exponencial.

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Answer:

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Answer:

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The bulb with get brighter. Power is equal to 2/
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/
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Hello beautiful people on this earth.... I need some help asap please and thank you! :)
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Answers

Answer:

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Explanation:

Over the centuries cockroaches have become smaller and flatter, making it easier for them to hide and find their way into home cabinets and pantries. What does this demonstrate?
Geographic isolation plays a role in speciation
frem
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Selective breeding can result in passing favorable traits to the next generation

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Answer:

adaptation

Explanation:

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Answer:yo dada

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Answer:

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