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

#SPJ1


Related Questions

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

Answers

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.

Primary decomposers are
select all that apply
fungi
plants
trees
bacteria
animals

Answers

The answer would be bacteria and and fungi
Bacteria and fungi not sure though sorry

2. Which tissue makes up the husk of coconut?​

Answers

Answer:

Sclerenchymatous tissue

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.

How did changing the speed to crank the generator affect the intensity and glow of light bulbs?

Answers

The bulb with get brighter. Power is equal to 2/
V
2
/
R
, so if you increase V and R at the same rate then power will increase. Note that with real incandescent light bulbs the resistance of the filament increases a lot from the bulb's "off" state to its "on" stage due to the fact that the resistance depends on temperature.

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

Answers

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 :)

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.

if you have the gene for hemophilia, will you always have hemophilia?

Answers

Answer:

most likely

Explanation:

most likelyeeeeee :)

Genotype

YYPP
YyPP
yyPP
|YYPP
ҮyPp
ууРp
YYpp
Yypp
Уурр


phenotype:

Answers

Answer:

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

What are structures like the stomach and intestines called?
A.
tissues
B.
organs
C.
organisms
D.
cells

Answers

they’re called organs

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
C) integumentary system
D) cardiovascular system

Answers

Answer:

B) Muscular system

*EXTRA POINTS* what should be done with the two forces to find the net force? 29 N→⬛ 48N ← *

Answers

Need to subtract the 48N by 29N to get the resulting negative force of -19N

where do you see collision in a roller coaster ride?

Answers

Answer:

i dont think that happens very often

Explanation:

Hello beautiful people on this earth.... I need some help asap please and thank you! :)
How many subunits are in ribosomes??

Answers

Answer:

2 subunits

Explanation:

Color coat for roan cows (RW) shows codominance. A cow with a white coat has WW as its genotype. A cow with a red coat has RR as its genotype. A roan cow (RW) is crossed with another roan cow (RW), what fraction of the offspring will be white (WW)?

Answers

Answer:

1/4

Explanation:

Con ayuda de un microscopio se observa una bacteria en el agua transcurridas (2) se miran muchas bacterias . Que ocurrio alli ,que tpo de reproducccion sucedio meiosis o mitosis

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.

La fisión binaria, también conocida como bipartición, si bien muy parecida a la mitosis en algunos aspectos, es la forma de reproducción de las bacterias.

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.

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

Answers

Carbon dioxide (CO2)

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:

3. When you are fasting for this month, what does your body do at night after you've eaten?

Answers

Your body if you are fasting during the night is burning the extra fat to provide your body with energy

Answer:yo dada

Explanation:yo mama

5. The organs of the respiratory system include the trachea, the bronchi, the diaphragm, and the ___________________________.

Answers

Larynx, Pharynx and lungs

Which portion of a flowering plant absorbs water and minerals? *
A. stem
B. blade
C. root
D. flower

Answers

Answer: c

Explanation:

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

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.

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
The environment is important in selecting adaptations
Artificial selection can result in the development of resistant species
Selective breeding can result in passing favorable traits to the next generation

Answers

Answer:

adaptation

Explanation:

the roaches adapt to their small environment and get smaller due to evolution

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

Answers

Organic molecules produced from spontaneous synthesis or from meteorites

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:

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.

Earth and Venus are almost identical....

Answers

Answer:

earth will have longer !!!

Are u making a statement or asking

What would you do if you turned into a pickle?

Answers

Dead. Pickles don’t have brains
probably eat myself. i love pickles

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

Answers

Answer:gen z

Explanation:

Explain the role of aquaporins in the rapid movement of water through some cells

Answers

Answer:

In the early 1990s, aquaporins were discovered, and it was found that they can selectively control water movement into and out of cells. One of the critical functions of aquaporins is that while they allow the passage of water they prevent the passage of ions.

Other Questions
nico had been looking for an interior decorator. he found a few good options and he thinks he will hire the person who was most comfortable with dogs because he did not want to have to put his elderly dog outside while the designer was working. at what stage of the decision process is nico? CVS does not currently bill medicare part b for? What is the name of the interest rate that banks pay when they borrow money from the Fed? help pls I will give you brainlist Homework #25 Why Is a Party Like Pouring Oil Into a Car? Do each exercise and find your answer at the bottom of the page. Write the letter of Ihe exercise in the box above or below the answer: I. Find the measure of the angle that is complementary to the angle having the measure given: 20 67 14 81 45 II. Find the measure of the angle that is supplementary to the angle having the measure given. III. Find the angle measure that is not given. Does Creon regret his actions? Which appeals court circuit is Michigan in? Which city? AP Human Geography Chapter 2 Vocabulary What are the benefits of paid search advertising? According to MacArthur and Wilson's hypothesis of island biogeography, species immigration and extinction rates on a particular island correlate to _____. How hard is pure maths? What is traditional and modern method of teaching? the image below shows types of cellular transport identified as passive transport. which statement below is true concerning passive transport? What is the basic purpose of a Code of Ethics? . Write a short story with the following as your concluding line: Everyone Said it was against the odds, but I proved everyone wrong| What was President Wilson's response to the outbreak of ww1? How long are terms for serving as a Supreme Court Justice? Why are Chromosomes arranged in pairs?A. One chromosome is from the mother, and the other is from the father. B. DNA is a double helix. C. The chromosomes are split more easily. D. Genes can be dominant or recessive Given g(x)= -5x+1, find g(1) A population of mountain lions lives in an alpine forest. The mountain lions hunt deer, rabbits, and other prey. As the population increases, which of these events becomes more likely to occur?. Question 6 of 10The "drawers" where blocks in MakeCode Arcade are stored are found inwhich area?A. WorkspaceB. Right side panelC. Image editorD. Toolbox