Why did the Elodea tube revert back to a red color after being exposed to light and not the control?

Answers

Answer 1

Answer:

Through investigation, students observe that an Elodea plant in water and exposed to light performs photosynthesis. By using an oxygen meter, students can identify an increase in the amount of dissolved oxygen in the water containing the Elodea plant. This is a product of photosynthesis.

Explanation:

...


Related Questions

How would the processes and reservoirs of the carbon cycle change over time
if photosynthesis stopped?

Answers

if photosynthesis stopped, plants would stop converting carbon dioxide -- an air pollutant -- to organic material. ... Even if all the plants on Earth were to die, people would remain resourceful -- especially if their lives depended on it.

Reservoirs of the carbon cycle will have more Carbon stored.

What is photosynthesis?

Photosynthesis is the process in which green plant produce their own food using carbon dioxide and water.

Carbon dioxide contributes to carbon cycle and when plants do not use carbon dioxide, Carbon will remain stored in the atmosphere in large quantity.

Therefore, Reservoirs of the carbon cycle will have more Carbon stored.

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The tRNA with the anticodon CGC should have linked at its 3 'terminal to the amino acid:

A. Leu
B. Gln
C. Val
D. Ala

Answers

Answer:

D. Ala

Explanation:

Alanine is GCG

In the soybean respiration experiment, why were glass beads added in the non-germinating seed tube?

Answers

Answer:

Explanation:

The result was a decrease in gas volume within the tube, and a related decrease in pressure in the tube. The respirometer with just the glass beads served as a control, allowing changes in volume due to changes in atmospheric pressure and/or temperature.

The purpose of the beads is to ensure that each respirometer is uniform in volume. The vial with glass beads alone will permit detection of any changes in volume due to atmospheric pressure changes or temperature changes.

Once an ice core have been collected and transported back to the laboratory scientist often wash the samples with purified water what is the purpose of this effort

Answers

Answer:

to clean the ice and the ice refrehsed and reaady to use

Explanation:

Vincristine is a powerful breast cancer drug b. childhood leukemia drug antinausea drug d headache medicine C.​

Answers

Answer:

b

Explanation:

edg 2021

Vincristine is a powerful childhood leukemia drug

What is childhood leukemia?Childhood leukemia is a disease of the white blood cells that is the most frequent type of cancer in children and teenagers. In the bone marrow, abnormal white blood cells form. They travel fast through the bloodstream, crowding out healthy cells in the process. This increases the risk of infection and other disorders in the body.

What is Vincristine?Vincristine is a chemotherapeutic treatment that is used to treat specific kinds of leukemia (white blood cell malignancy), such as acute myeloid leukemia (AML, ANLL) and acute lymphoblastic leukemia (ALL) (ALL)For more than three decades, vincristine (VCR) has been regularly used to treat childhood leukemia.

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ddfsdfsdfdsdddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Answers

Answer:

NOPE, NO AnSwEr HeRe

If YoU CaN SeE ThIs, I WaS TEsTingIt OUt, BEcaUSe Of LaG

match the name of the step in mitosis with what happens during that phase.

prophase
metaphase
anaphase
telophase

[ options to match ]

nuclear membranes form, chromosomes unwind

chromosomes condense, spindle fibers form

spindle fibers shorten and chromatids are pulled apart

spindle fibers move chromosomes to the middle of the cell

[ i’ll give you brainliest if you can solve all of them and get them correct ! ]

Answers

Answer:

telophase- option number 1

prophase- option number 2

anaphase- option number 3

metaphase- option number 4

Oxygen has 6 valence electrons. How many electrons does an atom of oxygen need to become stable?

two
four
six
eight

Answers

Answer:

2 electrons

Explanation:

According to the octet rule, atoms must bond to each other, sharing electrons among themselves in an attempt to complete their valence shell (last layer of the electrosphere). In other words, an atom becomes stable when it has 8 electrons in its valence shell.

Oxygen atoms have six electrons in their valence shell, so to achieve the stability suggested by the octet rule (eight electrons), these atoms share two electrons, forming one oxygen gas (O₂) molecule.

Answer:

A. two

Explanation:

i got it right

Is carbon sink positive or negative condotion?

Answers

Answer:

positive

Explanation:

I just looked it up and its positive hope this helps

GIVING BRAINLIEST PLS HELP

Answers

Screw or wedge but I think wedge

Answer: The answer is a screw

Explanation: first the lever wouldn't be right, the pulley wouldn't be either since it isn't on there. So it would be the screw

List out the role of polyploid in ornamental horticulture?​

Answers

Polyploidy is a major force in the evolution of both wild and cultivated plants- In addition, polyploidy often results in reduced fertility due to meiotic errors, allowing the production of seedless varieties...

what are the cycles found in photosynthesis?

Answers

Answer: The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.

Explanation:

which of the following correctly describes compact bone and cancellous bone. A) only compact bone has osteocytes. B) compact bone has osteons and cancellous bone has trabeculae. C) compact bone forms the inner part of the bone and cancellous is the outer part. D) cancellous bone is extremely dense and strong while compact bone has many open spaces where bone marrow is found.

Answers

Answer:

A.) Only compact bone has osteocytes.

Explanation:

Reasons why B C and D are incorrect

B the cancellous bone doesn't have trabeculae,there for the statement is incorrect.

C.The compact bone is on the "OUTER" part of the bone,so that would be incorrect

D. The cancellous bone is much more porous and, therefore, weaker than the compact bone.

The statement that correctly describes compact bone and cancellous bone is that compact bone has osteons and cancellous bone has trabeculae. That is option  B.

The bones makes up the musculoskeletal system of the body. It provides framework of the body and gives attachment to muscles and tendons.

There are two types of bones:

The compact bone: This makes up about 80% of the body bone mass. It is made up of a large number of tube-shaped units called osteons. The way the osteons are aligned in the bone, gives it great strength.

The cancellous bone: This is also called spongy bone. This is because it looks like a honeycomb. There are presence of little beams called trabeculae which consists of a few lamellae and osteocytes interconnected by canaliculi.

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Which stage of the SoulCycle involves the division of cells nucleus?

Answers

Answer:

Mitosis

Explanation:

The second stage Mitosis, It is the process in cell division where the nucleus divides into two nuclei.

Hope it helps!

How does resistance, such as pesticides resistance or antibiotic resistance, develop?

Answers

Answer:

Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.

Explanation:

What is the substrate of enzyme 2?
What is the substrate of enzyme 3?
What is the product catalyzed by enzyme 1?
What is the starting reactant for enzyme 3? Blank 4

Answers

Answer:

anwer is down

Explanation:

A substrate is a molecule that an enzyme reacts with. The enzyme's active site, or the location where weak bonds between the two molecules can form, is loaded with a substrate. An enzyme substrate complex is formed, and the enzyme's pressures on the substrate drive it to react and become the planned reaction's result.

One molecule of glucose is recycled into ___ molecules of carbon dioxide during cellular respiration.(1 point)

2
12
1
6

Answers

Answer:

I think it's 6

Explanation:

During cellular respiration, one molecule of glucose is recycled into 6 molecules of carbon dioxide.

Cellular respiration refers to series of metabolic reactions that typically occur in living cells, in order to produce energy in the form of adenosine triphosphate (ATP).

Generally, the whole metabolic process involved in cellular respiration can be represented by using a single chemical equation with the following substances;

Glucose.Oxygen.Carbon dioxide.Water.Adenosine triphosphate (ATP).

          [tex]Glucose + Oxygen ---> Carbon \;dioxide + Water + ATP[/tex]

In conclusion, a molecule of glucose is recycled into 6 molecules of carbon dioxide during cellular respiration.

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what is information?​

Answers

Answer:

Information can be thought of as the resolution of uncertainty; it is that which answers the question of "What an entity is" and thus defines both its essence and the nature of its characteristics. The concept of information has different meanings in different contexts.

What determines the shape of a snow crystal?

Answers

A snow crystal appears when water vapor in the air converts directly into ice without first becoming liquid water. ... The exact shape of the final snow crystal is determined by the precise path it took through the clouds. But the six arms all took the same path, and so each experienced the same changes at the same times.
Answer- How wet and cold the cloud is

I need help with this

Answers

Answer:

it is a

Explanation:

HOW CAN A MUTATION IN A GENE AFFECT THE TRAITS THAT AN ORGANISM HAS

Answers

it can impact its physical characteristics

Answer:

The gene will code for a different protein than it should.

Explanation:

Identify the biotic factor of an ecosystem?

Answers

Answer:

A biotic factor is a living organism that shapes its environment. In a freshwater ecosystem, examples might include aquatic plants, fish, amphibians, and algae. Biotic and abiotic factors work together to create a unique ecosystem.

Do you still need help????

asssap will give 100 poits



Which is most likely a statement that indicates someone is making a pseudoscientific claim about how people can improve their lives?


Lab tests show that this food has vitamins and zero fat.

You can read these books by scientists to learn more.

You have to believe the exercise works before you try it.

Lab tests on mice suggest this diet pill may work for humans.

Answers

Answer:

"You have to believe the exercise works before you try it" would be the pseudoscientific claim.

Describe the role of wind
PLEASE HELP here is 20 points!!! And I mark brainliest!

Answers

Wind plays a significant role in the whether and the climate. It also helps plants with dispersing seeds, spores, pollen, and other forms of reproduction.

In a site that contains multiple domain controllers, how long will a domain controller wait after notifying its first replication partner before sending the change notification to its next replication partner?

Answers

Answer:

3 seconds

Explanation:

3 seconds

In this kind of a situation where there exists multiple replica domain controllers that are present in the site, then the source domain controller being the one, will have to wait three seconds after issuing the first change notification. Thereafter, it then sends a change notification to the next domain controller.

How do you create a dichotomous key?PLEASE WRITE IT GOOD BC I HAVE A TEST TOMORROW ​

Answers

Answer:

In the field of biology, classification plays a major role. With new species being discovered every day, it’s important to have techniques in place to identify and classify them. One such tool is the dichotomous key. It helps identify organisms by directing the user to look at the known organisms.

Explanation:

What is a Dichotomous Key

What is a Dichotomous KeyStudents and professionals use the dichotomous key to identify and classify objects (i.e. people, animals, plants, bacteria, etc.) into specific categories based on their characteristics. It’s the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms.

What is a Dichotomous KeyStudents and professionals use the dichotomous key to identify and classify objects (i.e. people, animals, plants, bacteria, etc.) into specific categories based on their characteristics. It’s the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms.Simply put, it is a method used to identify a species by answering a series of questions based on contrasting features (eg: physical characteristics) that have two possible outcomes.

What is a Dichotomous KeyStudents and professionals use the dichotomous key to identify and classify objects (i.e. people, animals, plants, bacteria, etc.) into specific categories based on their characteristics. It’s the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms.Simply put, it is a method used to identify a species by answering a series of questions based on contrasting features (eg: physical characteristics) that have two possible outcomes.“Dichotomous” means divided into two parts, hence the dichotomous keys always present two choices based on the key characteristics of the organism in each step. By correctly selecting the right choice at each stage, the user will be able to identify the name of the organism at the end. The further you divide the key, the more you learn about the specimen you are trying to identify.

What is a Dichotomous KeyStudents and professionals use the dichotomous key to identify and classify objects (i.e. people, animals, plants, bacteria, etc.) into specific categories based on their characteristics. It’s the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms.Simply put, it is a method used to identify a species by answering a series of questions based on contrasting features (eg: physical characteristics) that have two possible outcomes.“Dichotomous” means divided into two parts, hence the dichotomous keys always present two choices based on the key characteristics of the organism in each step. By correctly selecting the right choice at each stage, the user will be able to identify the name of the organism at the end. The further you divide the key, the more you learn about the specimen you are trying to identify.When creating a dichotomous key, both qualitative (i.e. physical attributes such as how the organism looks, what color it is, etc.) and quantitative (i.e. the number of legs, weight, height, etc.) factors are considered.

What is a Dichotomous KeyStudents and professionals use the dichotomous key to identify and classify objects (i.e. people, animals, plants, bacteria, etc.) into specific categories based on their characteristics. It’s the most commonly used form of classification or type of identification key used in biology as it simplifies identifying unknown organisms.Simply put, it is a method used to identify a species by answering a series of questions based on contrasting features (eg: physical characteristics) that have two possible outcomes.“Dichotomous” means divided into two parts, hence the dichotomous keys always present two choices based on the key characteristics of the organism in each step. By correctly selecting the right choice at each stage, the user will be able to identify the name of the organism at the end. The further you divide the key, the more you learn about the specimen you are trying to identify.When creating a dichotomous key, both qualitative (i.e. physical attributes such as how the organism looks, what color it is, etc.) and quantitative (i.e. the number of legs, weight, height, etc.) factors are considered.It can be done in both a graphical (as a branching flowchart) or written format (series of paired statements organized sequentially). Most often, they are used to identify plant and animal species, although it can be used to classify any object that can be identified by a set of observable characteristics.

(100 points)

In Camellia flowers, petal color is inherited codominantly with the possible colors
being red, white, and red and white spots. What would be the chance of getting a
red and white spotted flower if you cross a spotted flower with a white flower?

Answers

The chances of getting a red and white spotted flower if you cross a spotted flower with a white flower are - 25%.

Codominance

This is an inheritance pattern in which both the alleles of a gene are expressed in an organism. In the camellia plant, alleles R and allele W will express themselves independently of each other.

Due to this, in heterozygous condition (RW) the phenotype appears as a hybrid that is presence of red and white patched flowers.

Crossing:  a spotted flower (RW) with a white flower (WW)

punnet:

        R       W

W     RW     WW

W    RW     WW

As we know only RW is heterozygous that expresses spotted flower, in this case, only a 25% probability of spotted flower.

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In Camellia flowers, petal color is inherited codominantly with the possible colors being red, white, and red and white spots. The chance of getting  is 25 %.

What is Codomince?

In terms of genetics, codominance is a sort of inheritance in which two distinct expressions (alleles) of the same gene result in distinct features in a person. That is, both qualities emerge rather than one trait predominating over the other, as in a plant or animal with multiple pigment colors.

One common characteristic of people that you can't really see just by looking at them, but that many people are aware of, is their blood type.

One A allele and one B allele are present in individuals with the blood type AB. Their blood type is AB because both alleles are expressed simultaneously.

Therefore, In Camellia flowers, petal color is inherited codominantly with the possible colors being red, white, and red and white spots. The chance of getting  is 25 %.

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A few minutes of incubation at room temperature in the laboratory will inactivate HIV, but the flu virus is still active after incubating for several hours. What are the practical consequences of these findings?

Answers

Answer:

Flu virus cause more infection than HIV virus.

Explanation:

The practical consequences of these findings indicates that the flu virus has more chances to cause infection in the person due to its active nature as compared to HIV virus which is inactive after incubation. This active nature of the flu virus results in the infection of more people in the world as compared to HIV patients so we can conclude that flu virus is more common than HIV virus due to its activeness.

How is the DNA sequence AATTA replicated in a new strand during semiconservative replication?

Answers

The new strand would be ATTAA

Answer:

According to the semi-conservative DNA replication, the AATTA sequence is transcribed into a new strand as TTAAT, taking into account the complementarity of nitrogenous bases.

Explanation:

Semi-conservative DNA replication means that two molecules are obtained from a double-stranded DNA molecule, each with an original strand and a new strand.

The DNA is composed of sequences of nitrogenous bases, which are adenine (A), guanine (G), thymine (T) and cytosine (C).  The bases of one chain are matched with the bases of another, according to the complementarity of nitrogenous bases, where:

Adenine is complemented with Thymine A=TGuanine is complemented with Cytosine G≡C

Then, for the sequence AATTA of the strand DNA mold, the sequence on the new strand would be complementary, i.e., TTAAT.

Having freckles is a dominant trait, and not having freckles is a recessive trait. Which set of parents will not have any children with freckles? A. A mother with FF and a father with ff O B. A mother with Ffand a father with Ff O c. A mother with ff and a father with ff​

Answers

As freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait, i.e., ff. The correct option is C.

What are recessive traits?

Recessive trait is a  trait that really should be transmitted by both parents in order to be present in the offspring. Recessive features might exist in a person's DNA but not manifest in that individual.

As in the given case, F denotes dominance, and f denotes recessive character. Dominant trait always superimpose over the recessive one.

So, as freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait i.e., ff.

Thus, the correct option is C.

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Answer:

c

Explanation:

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