A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants. A constant in this experiment is the
A.Air temperature at which the corn plants were grown
B.Amount of carbon dioxide used by the corn plants
C.Volume of oxygen produced by the corn plants
D.Number of corn plants used

Answers

Answer 1

Answer: A) the air temp at which the corn plants are grown

Explanation:

The independent variable is the one that changes based on what problem/ question the experimenter is trying to solve. The student is trying to see if the air temp has an affect on the rate of photosynthesis so they whorls use various temps and measure the rate

Answer 2

The constant in this experiment is the number of corn plants used.

WHAT IS A CONSTANT VARIABLE:

In an experiment, a constant or control variable is a variable that is kept the same for all groups of the experiment.

The independent variable is tested to bring about a change in a dependent variable in an experiment. However, every other variable of the experiment must be kept constant. These variables are called CONSTANT.

In this question, the independent variable is the air temperature while the dependent variable is the rate of photosynthesis.

A constant in this experiment is the number of corn plants used. The number used must be the same for all groups.

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Related Questions

Name and describe the five types of active transport systems.

Answers

Answer:

Please Mark as Brainliest. Please!!!!!!!!!!

Explanation:

Definition

Active transport is the process of transferring substances into, out of, and between cells, using energy. In some cases, the movement of substances can be accomplished by passive transport, which uses no energy. However, the cell often needs to transport materials against their concentration gradient. In these cases, active transport is required.

Active transport requires energy to move substances from a low concentration of that substance to a high concentration of that substance, in contrast with the process of osmosis. Active transport is most commonly accomplished by a transport protein that undergoes a change in shape when it binds with the cell’s “fuel,” a molecule called adenosine triphosphate (ATP).

For example, one type of active transport channel in the cell membrane will bind to the molecule it is supposed to transport – such as a sodium ion – and hold onto it until a molecule of ATP comes along and binds to the protein. The energy stored in ATP then allows the channel to change shape, spitting the sodium ion out on the opposite side of the cell membrane. This type of active transport directly uses ATP and is called “primary” active transport.

Another type of active transport is “secondary” active transport. In this type of active transport, the protein pump does not use ATP itself, but the cell must utilize ATP in order to keep it functioning. This will be explained in more depth in the section on Symport Pumps below.

Lastly, active transport can be accomplished through processes called endocytosis and exocytosis. In exocytosis, a cell moves something outside of itself in large quantities by wrapping it in a membrane called a vesicle and “spitting out” the vesicle. In endocytosis, a cell “eats” something by wrapping and re-forming its membrane around the substance or item.

Each type of active transport is explained in more detail below.

Types of Active Transport

Antiport Pumps

Antiport pumps as an example of active transport

Active transport by antiport pumps

Antiport pumps are a type of transmembrane co-transporter protein. They pump one substance in one direction, while transporting another substance in the opposite direction. These pumps are extremely efficient because many of them can use one ATP molecule to fuel these two different tasks.

One important type of antiport pump is the sodium-potassium pump, which is discussed in more detail under “Examples of Active Transport.”

Symport Pumps

Symport pumps take advantage of diffusion gradients to move substances. Diffusion gradients are differences in concentration that cause substances to naturally move from areas of high to low concentration.

In the case of a symport pump, a substance that “wants” to move from an area of high concentration to low concentration down its concentration gradient is used to “carry” another substance against its concentration gradient.

One example of a symport pump – that of the sodium-glucose transport protein – is discussed below under “Examples of Active Transport.”

Sympoter pump as an example of active transport

Active transport by symporter pumps

Endocytosis

In the third type of active transport, large items, or large amounts of extracellular fluid, may be taken into a cell through the process of endocytosis.

QAmino acids differ from one another according to their R. or side carboxyl, COO- hydrogen, H amino, NH3+​

Answers

Answer:

it's R or side

Explanation:

Which one of the codons below would stop the translation of mRNA by ribosomal subunits?
UAG, UAA, UGA
AUG, ATG, GTU
CUG, AUG, GUA
ATG, AAG, AAA

Answers

CUG hope this helped!!!!!

Answer:

CUG,AUG,GUA

Explanation:

A scientist crossed two fruit flies in a lab. She was studying the transmission of the alleles that affect wing shape. The dominant allele, C, is the allele for curly wings, and the recessive allele, c, is the allele for straight wings. She knew that one of the parent flies was heterozygous and had curly wings (Cc). Half of the offspring from the cross had curly wings, and the other half had straight wings. Identify the genotype and phenotype of the second parent fly. State the evidence that supports your response.

Answers

Answer:

The other fly would have to be a cc

Explanation:

To do this, you can use the square method, one Cc's on the top and one side a cc, when you cross these it gives you Cc, Cc, and cc, cc. Half and half.

Hope this helped!

The other parent was cc.

Genes often occur in pairs. Genes are units of inheritance located in the chromosomes. The pairs in which genes occur are called alleles. In a given pair of alleles, one gene is dominant and the other is recessive.

In this case, the dominant gene is for curly wings and the recessive gene is for straight wings. If one parent is Cc , the other parent must be cc causing half of the offspring from the cross to have curly wings, and the other half to have straight wings.

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Is toxic chemical pollution a nonpoint source pollution or a point source pollution? I need an actual answer.

Answers

Answer:

Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. Oil, grease and toxic chemicals from urban runoff and energy production.

Explanation:

need help
6H2O + 6CO2
C6H12O6 + 602

Answers

Answer:

C6H12O6+6O2=6CO2+6H2O

PLZZZZZZ I NEED HELP ASAP I ONLY GOT A LIL TIME PLZZ HELP :)

Answers

Answer:

B. The first generation will not have short plants. The short trait will return in the second generation.

Explanation:

If T is for Tall and t is for short, then the first generation doesn't have any short offspring. We can rule out answer choices A and D.

The second generation results in TT, Tt, Tt, tt.

TT is a tall Offspring.

Tt is a Tall Offspring, with a small t as a recessive trait.

tt is a short offspring because both the recessive traits (t) are together.

We can rule out option C.

That leaves us with the correct answer being B. The first generation will not have short offspring, but will pass it on to the second generation, which will have a short offspring (25% chance of having short offspring).

What is the smallest unit ?

Answers

Cell

I had the same question on my test!!

Answer: B) cell

the smallest unit of life is a cell

Help me please hurry???????????

Answers

Answer:

Compared to the use of many gasoline vehicles with only one person per vehicle, this method of transportation conserves more fossil fuels.

Explanation:

A form of transportation —such as the subway or streetcar— has capacity for many passengers and uses electricity as an energy source. This means fewer people using gasoline-vehicles, which leads to savings in fossil fuels, such as gasoline or diesel.

The decrease in the use of fossil fuels in vehicles has been proposed as an alternative to reduce environmental pollution and its consequences. One alternative is to consider mass transport vehicles that use alternative energy, a sustainable form of transport.

    None of the other options are correct, as they involve more or the same use of fossil fuels per person.

10
01:57:37
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different
experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the
conclusion?

Answers

Answer: In study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion that the study is well supported to cancer studies.

Explanation: This is because each cell behaves differently in different environmental conditions and each type of cell has its peculiar behaviour in different conditions.

So by this pattern varied studies can be done.

Answer:

A

Explanation:

Which section of the Venn diagram represents the contents of the nucleus?

Answers

The answer is VI u welcome ye
It’s V my dude. The nucleus only contains protons and neutrons

During an annual check-up, the doctor typically feels the lymph nodes for swelling. What would swelling in the lymph nodes most likely indicate?
A.
the body is not receiving enough oxygen
B.
white blood cells are lacking nutrients
C.
white blood cells are growing uncontrollably
D.
the body is experiencing an infection

Answers

B because that’s the answer

Answer: B

Explanation:

Hurry plzzzz >_<
How are plant and animal cells similar?

Answers

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements

Answer:

Plant and animal cells are similar because both are eukaryotic. Every plant and animal cell has a cell membrane and cytoplasm. In addition, nearly all plant and animal cells have a nucleus.

Explanation:

I got it right

~PLEASE HELP ME~
The warming of the atmosphere by the trapping of heat being radiated to space is called
a)condensation
b)evaporation
c)the greenhouse effect
d)radiation

Answers

Answer:

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and back out to space, greenhouse gases absorb much of it.

The answer is c



Good luck

The fraction whose denominator is 8 more than the numarator​

Answers

Answer:

Explanation:

1/9

Answer:

[tex]\frac{8}{16}[/tex]

Explanation:

What does lemon juice, snake venom and cyanide have in common?

Answers

Answer:

enzymes are protein molecules that act as catalysts, speeding up chemical reactions without themselves getting used up. Each enzyme will only speed up a specific reaction, for example, catalase will speed up the decomposition of hydrogen peroxide into water and oxygen but it will not speed up the breakdown of starch into glucose. Enzymes (e.g. catalase) have active sites with specific shapes that bind to the substrate molecule (e.g. hydrogen peroxide) forming an enzyme-substrate complex. The enzyme-substrate complex then breaks down into the enzyme and product, allowing the enzyme to go on and react with another substrate molecule. Temperature and pH affect enzyme function because they can change the shape of the enzyme’s active site, preventing it from binding to the substrate, just as a broken lock will no longer fit the key. When the shape of an enzyme changes we call this denaturation. Any factor that increases the frequency of collisions between enzymes and substrates (increasing concentration, surface area or temperature) will increase the rate of reaction.

Explanation:

What lemon juice, snake venom and cyanide have in common is hat they are all acidic substances.

An acidic solution is a solution that contains hydrogen ions as its only positive ion in solution. Acidic substances have a sour and turn blue litmus paper red.

What lemon juice, snake venom and cyanide have in common is hat they are all acidic substances.

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What is the difference between Primary and Secondary Succession?

Answers

Answer:

Some differences between primary and secondary succession are:

-Secondary succession happens on a previously existing community that has been cleared.

Another difference would be:

-Pioneer species for secondary succession are adapted differently- they grow quickly, can disperse quickly and have a short life span

And finally:

-Primary succession develops a new community from scratch

Not sure if you were looking for this, sorry if this is not correct.

I WILL GIVE BRAINLIEST IF U HELP ME AND I MEAN ACTUALLY HELP




Each year, the United States' federal costs exceed the anticipated national budget. In fact the last time that the United States government was able to end a fiscal year without accruing more debt was in 1960. This means that due to excessive spending and compounding interest accrued, the United States' national debt has escalated astronomically over the past several decades. The table shown below lists the recorded U.S. national debt amounts, written in standard form, for each decade, from 1960 to the year 2010.


Year U.S. national debt (in U.S. dollars)

1960 $286,330,760,848.37

1970 $370,918,706,949.93

1980 $907,701,000,000.00

1990 $3,233,313,451,777.25

2000 $5,674,178,209,886.86

2010 $13,561,623,030,891.79

For each decade, convert the U.S. national debt amount to a number in scientific notation, rounded to the nearest hundred millions dollars. Enter in numerical answers only.


Year U.S. national debt (in U.S. dollars)

written in standard form U.S. national debt (in U.S. dollars)

written in scientific notation

1960 $286,330,760,848.37 $2.863 ∙ 10

1970 $370,918,706,949.93 $3.709 ∙ 10

1980 $907,701,000,000.00 $9.077 ∙ 10

1990 $3,233,313,451,777.25 $3.2333 ∙ 10

2000 $5,674,178,209,886.86 $5.6742 ∙ 10

2010 $13,561,623,030,891.79 $1.35616 ∙ 10

Answers

Answer:

Given the US National Debt,

1960 $286,330,760,848.37

1970 $370,918,706,949.93

1980 $907,701,000,000.00

1990 $3,233,313,451,777.25

2000 $5,674,178,209,886.86

2010 $13,561,623,030,891.79

Then, rounding off these numbers to nearest hundred million,

1960 $286,000,000,000.00

1970 $370,900,000,000.00

1980 $907,700,000,000.00

1990 $3,233,300,000,000.00

2000 $5,674,200,000,000.00

2010 $13,561,600,000,000.00

While representing a number in scientific notation, it is written as a number between 1 and 10 and then multiplied by a power of 10.

The debt amount becomes,

1960 $2.86×10¹¹

1970 $3.709×10¹¹

1980 $9.077×10¹¹

1990 $3.2333×10¹²

2000 $5.6742×10¹²

2010 $1.35616×10¹³

Explanation:

Given the US National Debt,

1960 $286,330,760,848.37

1970 $370,918,706,949.93

1980 $907,701,000,000.00

1990 $3,233,313,451,777.25

2000 $5,674,178,209,886.86

2010 $13,561,623,030,891.79

Then, rounding off these numbers to nearest hundred million,

1960 $286,000,000,000.00

1970 $370,900,000,000.00

1980 $907,700,000,000.00

1990 $3,233,300,000,000.00

2000 $5,674,200,000,000.00

2010 $13,561,600,000,000.00

While representing a number in scientific notation, it is written as a number between 1 and 10 and then multiplied by a power of 10.

The debt amount becomes,

1960 $2.86×10¹¹

1970 $3.709×10¹¹

1980 $9.077×10¹¹

1990 $3.2333×10¹²

2000 $5.6742×10¹²

2010 $1.35616×10¹³

Explanation:

Steroids include substances such as?

Answers

Answer:

The steroid core structure is typically composed of seventeen carbon atoms, bonded in four "fused" rings

Explanation:

Answer:

testosterone:an anabolic steroid... principal sex hormones

dexamethasone:a synthetic corticosteroid drug

cholic acid

Why is energy lost in a food chain? *​

Answers

Answer:

Because as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level

Explanation:

Hope that helps!

not all energy is passed from one level of a food chain to the next. Around 90% of energy is lost from heat during respiration, in materials that the consumer doesn't digest, or through movement. Through the undigested materials where the energy is stored It's transferred to decomposers.


b) Write about pest control?

Answers

Answer:

Pest control is helpful I guess...

Explanation: Pest control uses lots of chemicals and poison stuff to kill those vexing pests but most importantly it kills them its a dangerous job if you don't know what your doing.

Answer:

give the answer in short Press control means when in our home of dirty Cockroaches and small insects then we Press control our house to get out all the dirty insects

Explanation:

Mansa is up to this if this is correct then mark me as a brainliest

Help me answer that question and how are you supposed to know which one is the predator and the prey like how can you tell?

Answers

Answer:

predator is blue, prey is red

Explanation:

when the amount of predators increase, the blue line rises, the red line lowers. when there is more predators there is going to be a less amount of prey.

How does oxygen enter a cell?
A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Osmosis

Answers

Answer:

C

Explanation:

HELPPPP FAST
10 points

Answers

Answer:

X-rays

If im worng then im sorry.

How do scientists use observations
to make predictions?

Answers

Answer:

They use hypotheses to guess a result based on what they already know. Observations are used to record the results of an experiment. Predictions are used to have an expected outcome of a test, thinking the hypothesis is correct. Experiments are used to test the hypothesis.

I will mark BRAINLIEST
Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?
a. acidification of the water
b. algae growth as a result of eutrophication
c. degraded quality of water for human and livestock consumption
d. improved water habitats for human recreation

Answers

Answer:

D

Explanation:

Egdenuity 2022

Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading. Thus, the correct option is D.

What is Nutrient loading?

Nutrient loading means the total amount of a nutrient such as elements like nitrogen or phosphorus entering the water during a given time period, such as tons of nitrogen per year, or pounds of phosphorus per day. Nutrients may enter into the water from runoff, ground water recharge, point source discharges, or the air particles.

Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading.

Therefore, the correct option is D.

Learn more about Nutrient loading here:

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Explain the purpose of cellular respiration .where does it take place ?

Answers

Answer:

Cellular respiration, it is an aerobic process in which glucose is combined with oxygen and Adenosine di-phosphate (ADP) to produce carbon dioxide, water, and Adenosine tri-phosphate (ATP).

Cellular respiration takes place in double membraned organelle called mitochondrion.

Using the law of conservation of mass, what is the mass, in grams, of the product in the given reaction?

Reactant 1 (35 grams)+ Reactant 2 (115 grams) →Product (? grams)

A. 80

B. 140

C. 150

D. 75

Answers

Answer:

The correct option is;

C. 150

Explanation:

By the law of conservation of mass we have that in a closed system, the mass of the items in the system can not be destroyed or created by a physical process or chemical reaction

In the given chemical reaction process we have;

Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product = ((35 + 115) grams)

∴ Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product (150 grams)

The mass of the product = 150 grams.

During the light dependent reactions of photosynthesis which is not produced
A.Oxygen
B.ATP
C.NADPH
D. Glucose

*hurryyyyyyy*

Answers

Answer:

D. Glucose

Explanation:

16. Name one organism that reproduces through binary fission​

Answers

Answer:

Coral!

Explanation:

I learned this is a biology class a while ago!

Answer:

Bacteria

Explanation:

Other Questions
Mrs moretti is making welcome bags to give to the 18 students in his homeroom on the first day of school. He puts m mechanical pencils in each bag. He puts twice as many regular pencils in each bag. Which expressions represent the total number of pencils Mr Moretti gives to his students? CHOOSE ALL THAT APPLY: a.) m+2m b.) 18(m+2m) c.) 18+m+2m d.) 18m+18(2m) e.) 54m f.) 18+3m Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.Based on these observations, which ecosystem is likely to be the least sustainable?A.Ecosystem 1, because it has the fewest speciesB.Ecosystem 2, because it includes both aquatic and terrestrial speciesC.Ecosystem 3, because it has few predatorsD.Ecosystem 4, because it supports many animals graph for y=2/3x-4 convert 300 seconds to minutes there are 60 seconds in 1 minute Words like "gonna" and phrases like "where they do that at?" are examples ofFormal LanguageColloquialismsIdiomsMetaphors I know 5his is easy for yall but for me is not I need some help please I'm giving brainlist. Which of the following could be the ratio between the lengths of the two legsof a 30-60-90 triangle?Check all that apply.OA. 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