A group of students wants to study the rate of photosynthesis under various conditions. They use a blender to mechanically disrupt the thylakoid membranes of chloroplasts from an algae sample The liquid
mixture is added to test-tubes, and 5 drops of DPIP solution is added to each tube. One set of tubes is placed in direct sunlight, another is placed in indirect sunlight, and a third is placed under an infrared heat
lamp. One test-tube contains only water and 5 drops of DPIP (control). The students check the color of the liquid in the tubes every 15 minutes for a period of 1 hour. They record their observations in a table
Table of Observations
Time (min) Direct Sunlight
Indirect Sunlight
0
Dark Blue
Dark Blue
15
Lighter
Slightly Lighter
30
Lighter
Lighter
45
Nearly colorless
Lighter
60
Clear colorless
Nearly colorless
Which of the statements is the BEST explanation for their results?
Infrared Lamp
Dark Blue
No Change
Slightly Lighter
Slightly Lighter
Slightly Lighter
Control
Dark Blue
Dark Blue
Dark Blue
Dark Blue
Dark Blue
А
The rate of photosynthesis under indirect sunlight is slower than in infrared light
B
The rate of photosynthesis is greatest for direct sunlight and least for the infrared light.
С
The rate of photosynthesis cannot be determined because the infrared lamp degraded the DPIP
D
The rate of photosynthesis cannot be determined because exposure to direct sunlight degraded the DPIP

Answers

Answer 1

Answer:

Explanation:

The statement that best explains the result would be that the rate of photosynthesis is greatest for direct sunlight and least for the infrared light.

The DPIP will normally replace and play the role of NADPH in the light reaction of the process of photosynthesis. Hence, it will become colorless as a result of reduction and the rate of photosynthesis can be monitored based on the magnitude of the disappearance of the dark blue color.

It means that the more colorless the liquid in the illustration is, the more the rate of photosynthesis. The color change moved from dark blue to clear colorless under direct sunlight, from dark blue to nearly colorless under indirect sunlight, and from dark blue to slightly lighter under the infrared light. This clearly indicates that the rate of photosynthesis is highest under direct sunlight and lowest under infrared light with the indirect sunlight having an intermediate rate.

The correct option is B.

Related Questions

*
Teaching your dog to associate a sound with a reward is?

Answers

Answer: Training

Explanation:

Confusing for the dog

what are the answers to these 3 questions?

Answers

Answer:

1. A, 2. C, 3. B

Explanation:

number 1 is A, number 2 is C, number 3 is B

what biotic and abiotic accounted for the present distribution of oil worldwide

Answers

Answer:

i dont understand the question

Explanation:

The seasons are caused by...

A. How the earth rotates

B. the earths weather and average climate

C. the distance between the earth and sun

D. the changes in the distribution of light and the tilt of the earth

Answers

Answer: I would say A. How the earth rotates

Explanation: Because the axis is tilted.

why is earth layered how it is

Answers

Answer:

the increase in temperature and pressure as depth increases

Explanation:

branliest pls

A student is making a model to illustrate the functions of ADP and ATP in photosynthesis. Which model best illustrates the role of ATP in photosynthesis?

a power plant that generates energy

a hammer that helps break apart water molecules

a pan that carries coal

a rechargeable battery that stores and releases energy

Answers

Answer:

a rechargeable battery that stores and releases energy

Explanation:

Adenosine triphosphate (ATP) is a chemical molecule that has the ability to store and release energy for metabolic activities to occur in living cells. ATP stores energy in its phosphate bonds when an ADP molecule is phosphorylated while it releases the energy when the phosphate bond is broken.

According to this question, a student is making a model to illustrate the functions of ADP and ATP in photosynthesis. The model that " ATP is a rechargeable battery that stores and releases energy" best illustrates the role of ATP in photosynthesis. This is because an ATP molecule just like a rechargeable battery can be charged with energy to store and discharged to release the energy.

If you measured an entire bar of soap and compared it to the piece of soap from this activity, would the bar and the piece have the same mass, volume, and density?

Answers

Answer:

Different mass

Different volume

Same density

Explanation:

Intensive physical properties are those properties of a substance that is not dependent on amount i.e. do not change in response to changes in the amount of the substance. Intensive properties include density, temperature, boiling point etc.

On the other hand, extensive properties are those properties that are dependent on the amount of the substance. For example, mass and volume are extensive properties.

Hence, according to this question, measuring an entire bar of soap and comparing it to a piece of soap, the bar and the piece would have a:

- Different mass ( size dependent)

- Different volume (size dependent)

- Same density (size independent)

Write a summary of what you have learned in "Introducing the Microscope". Be sure to include steps on how to focus, how to solve for magnification, and what a field of view is and how to measure it.

Answers

"Introducing the Microscope" is a text that shows what a miscroscope is, how it works, its composition and its functions. This is a very important text for those who have no experience with this equipment, but can use it at any time.

One of the most important points in the text is about the operation and correct use of the microscope. Where concepts are explained, promoting the proper functioning of the equipment.

According to the text, we must have a full conviction of the microscope's field of view, which is the vision we have when we position our eyes under the microscope to visualize tiny and invisible elements with the naked eye.

However, the field of view needs to be focused and this is done with the manipulation of the microscope that will allow the vision to have a very well developed and detailed quality.

In addition, a microscope has many lenses, which can increase and decrease the size of the image. This promotes the enlargement of the image and makes the image can be seen more closely and in more detail.

How many glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react?(1 point)
0
1
2
3

Answers

Answer:

Explanation:

This is right, I got it right on the test

2 glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react.

CELLULAR RESPIRATION:

Cellular respiration is the process by which living organisms obtain energy (ATP) by breaking down food molecules in their cells.

Cellular respiration summarily involves the reaction of glucose molecules with oxygen molecules to produce carbon dioxide (CO2), water (H2O) and energy as follows:

C6H12O6 + 6O2 → 6CO2 + 6H2O

Originally, 1 molecule of glucose reacts with 6 molecules of oxygen

If 13 molecules are available to react, this means that:

13/6 = 2.16

= 2 molecules of glucose will react.

Therefore, 2 glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react.

Learn more at: https://brainly.com/question/23126016?referrer=searchResults

Label the steps for protein synthesis in order, beginning with the first step.

Answers

Answer:

Activation of amino acids:

Transfer of amino acid to tRNA:

Initiation of polypeptide chain:Chain Termination:

Protein translocation

Explanation:

10
F
The diagram below represents changes that take place within the human body. The diagram
represents * IS
Stability
Stimulus
Instability in
internal conditions
Response
Stability
cellular differentiation
dynamic equilibrium
gene interaction
biological evolution

Answers

Answer:dynamic equilibrium

Explanation:

Which explanation is based on empirical evidence? A. The arrangements of stars into constellations happened as a result of the actions of supernatural beings. B. Observations made using telescopes confirm that Earth orbits the Sun. C. The relative positions of the Sun, Earth, and stars can affect human events. D. Ancient texts reveal that the universe is about 6,000 years old. please hurry I really need help

Answers

Answer:

B. Observations made using telescopes confirm that Earth orbits the Sun.

Explanation:

An empirical evidence is an evidence derived from careful observation with our senses and through experiments designed in the laboratory. They can be reported either quantitatively or qualitatively.

Observations made using the telescope is made by our sense of sight. Although, a qualitative measurement is made, it is nonetheless an empirical evidence. Most space observations are usually qualitative in nature. The telescope is used for bringing far way places.

Identify the structure,is it RNA or DNA? WHY?

Answers

Answer:

what it look like tho

Explanation:

idhehdhdbfuf

is there a picture or something with the problem

Is coronavirus a lytic cycle or a lysogenic cycle ?

Answers

Answer:

i think lysogenic cycle

Explanation:

The Hulk is walking through the forest and notices some mushrooms and eats one. The mushroom is poisonous but he doesn't die because he's the Hulk. This is an example of

Answers

Answer: an autotroph eating a heterotroph

Explanation:

1. Fill in the blank spaces with suitable words.
a) The bunching of light back from the surface of a body is____________.

Answers

Answer:

reflection please mark me brainliest

Why do cells break apart small sugars during cellular respiration?
O to obtain carbon dioxide
O to build larger sugars
O to obtain energy
O to build various body parts

Answers

Cellular respiration is a process of breaking down sugar into carbon dioxide and water. Cellular respiration releases energy that cells use to do what they do. ... Breathing bring oxygen to cells and carries carbon dioxide away from cells. Cellular respiration breaks down sugar to release energy.

The first one, to obtain carbon dioxide. The C and O elements are used from glucoses CHO

What is ATP? In photosynthesis, what form of energy is sunlight converted to, and how is this energy stored?

Answers

ATP is energy used by cells to do bodily functions. Sunlight is converted into chemical energy and it’s stored as glucose

PLEASE HELP!! DNA mutations and cancer activity

Answers

Answer:

nosexd

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dxd

xdxdddxxxddxdxdx

Explanation:

ill give you a brainliest if it is right

Answers

Answer:

1,4,3,2

Explanation:

Answer:

Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks are formed from overburden pressure as particles of sediment are deposited out of air, ice, or water flows carrying the particles in suspension.

Explanation:

how does the pleura help with breathing?

Answers

Answer:

The outer pleura is attached to the chest wall (1-9). The pleural cavity aids optimal functioning of the lugs during breathing. It transmits movements of the chest wall to the lungs, particularly during heavy breathing.

____is the cells way of converting food molecules into a form useful to the cell.

Photosynthesis?
Cellular respiration?
Osmosis?
Diffusion?

Answers

Answer:

Respiration

Explanation:

cross off Photosynthesis because that is specifically for plants. Diffusion is when molecules move from high concentration to low concentrations. Osmosis helps transport water across the cell.

By process of reduction you can figure it out, but here is what cellular respiration is in it's basics so you can remember in the future. Cellular Respiration is just the process that takes place in cells to convert Chemical Energy from nutrients and turn it into ATP, then releases waste.

Answer:

Cellular respiration

Explanation:

What effect does plate movement have on geologic events and structures at Earth’s surface? What did you learn from conducting this lab?

Answers

Answer:

Plate movements may change the shape of Earth's surface and cause geologic events such as earthquakes.

Explanation:

Answer:

Below is the example answer and key points from edge 2021

Explanation:

!!DO NOT COPY DIRECTLY YOU WILL FAIL FOR PLAJORISM!!

-Convection currents move Earth’s plates.

-Plates interact with each other at plate boundaries.

-The interaction of plates may cause the formation of features like

-volcanoes that change Earth’s surface.

-The interaction of plates may result in geologic events like earthquakes.

"In the lab, I observed how convection moves Earth’s plates. I also saw how plates interact with each other. When plates move apart from each other at divergent boundaries, magma from the mantle reaches Earth’s surface and new crust forms. When plates move toward each other at convergent boundaries, volcanoes, mountains, and trenches form. When the plates rub against each other at transform boundaries, earthquakes may occur. Plate movements may change the shape of Earth’s surface and cause geologic events such as earthquakes."

compare and contrast the most common cancers for men and women using your own words.

-Minimum 4 sentences

Answers

one comparison between men and women is that they both have lung and bronchus cancer as one of the five most dangerous cancers. this has caused 72,500 male deaths and 63,220 female deaths. this is most likely because of smoking or other tobacco use. one contrast is that with men, prostate cancer is one of the five most dangerous cancers in men, obviously prostate cancer is not present in women. another contrast is that breast cancer is one of the five most dangerous cancers present in women.

What is the result of the capital formation process?
A. A consumer spends capital to acquire goods or real estate.
B. A financial planner creates a high-risk plan for investing capital.
C. An investor increases the amount of capital he or she controls.
O D. A bank makes capital available to a variety of customers.

Answers

Answer:

Explanation:

Just took the quiz and got it right

The result of the capital formation process is an investor increases the amount of capital he or she controls. The correct option is C.

What is capital formation?

Capital formation is increasing the capital by increasing the savings, investment in assets and savings, and investing money in a way that increases the stock of money.

So, the capital formation process is increasing the capital which he or she controls.

Thus, the correct option is C. An investor increases the amount of capital he or she controls.

Learn more about capital formation, here:

https://brainly.com/question/12911888

#SPJ5

Even though the outer and inner core are made of the same materials, why do you think they have different densities?

Answers

Answer:

gravity

Explanation:

What is an experiment?

Answers

Answer:

An experiment is a procedure carried out to support, refute, or validate a hypothesis. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated.

Explanation:

A tectonic plate is part of the Earth's lithosphere and can be best described as
a large, easily broken block.
a large, fairly rigid block.
a small, easily eroded block.
O a small, fairly rigid block.

Answers

Answer: is this what ur looking for?

1. Plate tectonic - continuing process in which sections (plates) move, instigating volcanoes and earthquakes, mountain construction and trench development.

2. Mid – ocean ridge - common type of divergent boundary.

3. Subduction - one plate sinks under another plate down into Earth's mantle, simple development alongside a convergent boundary.

4. Transform boundary - creating various earthquakes.

5. Rift valley - volcanoes and earthquakes shared and may developed low-lying comprising water.

I just took notes on this yesterday and got 110%

Explanation:

Hopefully this helped if not HMU and i will try my best to get u a better answer! :)

Answer:

A tectonic plate is part of the Earth’s lithosphere and can be best described a large, fairly rigid block.

Explanation:

got it right on EDG

ill give you a Brainliest if it is right
The steps in the formation of metamorphic rocks are listed below in an incorrect order.

1. Rock is subjected to extreme changes in heat.
2. Rock's internal arrangement of atoms changes.
3. Rock is subjected to extreme changes in pressure.
4. Rocks with new properties are created.

Which of these best shows the correct order of steps in the formation of metamorphic rocks?
A) 1, 3, 2, 4
B) 2, 1, 3, 4
C) 3, 1, 4, 2
D) 4, 2, 3, 1

Answers

It’s 1 I did it and got it right

PLEASE HELP ME ASAP

Does anyone know the answers for the 3.25 Mitosis lab?

Answers

Answer: your lucky

but please study, don't waste your life.

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