What are some control variables

Answers

Answer 1

Duration of the experiment.

Size and composition of containers.

Temperature.

Humidity.

Sample volume.

Pressure.

Experimental technique.

Chemical purity or manufacturer.


Related Questions

A scientists discovers a cell that's has chloroplasts, cytoplasm, dna, cell membrane

Answers

Answer:

it is an animal cell. jhhhhhh

what is the name of the process that happens in the mitochondria?

Answers

Answer:

Oxidative phosphorylation

Explanation:

which of these three human chromosomal abnormalities--down, patau, or edwards syndrome--has the longest average survival time? why is that the case?

Answers

Answer:Down syndrome, because trisomy 21 involves the smallest chromosome of the three.

Explanation:

Please help me with this question! Right answers only!

Answers

B is the correct answer I hope it’s right

The
layer of the skin is made of dead cells.

Answers

Explanation:

The stratum corneum, which is the outermost epidermal layer, consists of dead cells

How hydrogen and oxygen atoms react with each other to form a compound

Answers

two or more atoms bond with each other to form a molecule. when two hydrogens and an oxygen share electrons, a water molecule forms

the pigment-producing cells of the epidermis are located in which layer?

Answers

Answer:

Basal Layer

Explanation:

Melanocytes are found in the basal layer of the epidermis. These cells produce a pigment called melanin, which is responsible for different skin color. Melanin is packaged into small parcels (or melanosomes), which are then transferred to keratinocytes.

Help please……………………….

Answers

heterozygous.

yan po ang sagot

heterozygous - i did this yesterday

which are the catalysts of reactions in living things

Answers

Enzymes are proteins that act as biological catalysts. They speed up chemical reactions that take place in cells. Enzymes act by lowering the activation energies, which has a dramatic effect on how quickly reactions are completed.

most of the photosynthesis in lakes and ponds occurs in the:

Answers

Answer:

its occurs in the Littoral zone

Explanation:

Which of the following is true about enzymes?

- Enzymes are not changed in a chemical reaction

-Enzymes lower the activation energy of a chemical reaction

- Enzymes are specific for only one substrate/molecule

-Enzymes are reusable

-All of the above

Answers

Answer:

all of the above

Explanation:

The plasma membrane
a. allows all substances to pass into and
out of the cell
b. prevents all substances from passing
into and out of the cell
c. is composed mainly of a protein bilayer.
d. is composed mainly of a lipid bilayer.

Answers

The answer is A that’s what it does

Which of the following is not an easily used form of biomass?
A. Paper products
B. Residues from good production and processing
C. Trees and grasses grown as energy crops
D. Landfill materials

Answers

B. Residues from good production and processing

the person credited with the axiom, "every cell from a cell" is __________.

Answers

I’m not sure but I think it’s Rudolf Virchow

hazards to humans that come into contact with it,
4. Study the graphs in the stimulus. Order the events that occurred at the Bodega Bay study
site, where scientists used traps to catch and count samples of marine organisms, from
1to 5. Write a 1 by the first event to occur and a 5 by the last event.
5 The number of native clams per sample falls from 100 to 10.
1 Scientists find European Green Crabs in Bodega Bay.
4 Scientists find that the number of native clams per sample has risen to 40.
3 The number of native shore crabs per sample falls from 25 to 20.
2 The number of European Green Crabs per sample falls from 5 to 4.

Answers

Number 1 to 5 which would be that then answer

protein synthesis is a multistep process. put the steps of protein synthesis in sequential order.

Answers

Answer:

Replication - Transcription - Translation

Explanation:

Replication duplicates the DNA so that happens first. Then in transcription converts the DNA to mRNA which goes to the cytoplasm to make proteins. In translation proteins are made when codons and anti codons join to make amino acids which create the proteins.

HELP!!!!!!!!!11 100 POINTS!

Answers

Answer:

1. Cell membrane

2. Ribosomes

3. Mitochondria

4. Rough endoplasmic reticulum

5. Chromatin

6. Nucleolus

7. Cytoplasm

8. Nucleus

9. Smooth endoplasmic reticulum

10. Golgi vesicle

11. Golgi apparatus

12. Lysosome

Answer:

1. Cell membrane2. Ribosomes3. Mitochondria4. Rough endoplasmic reticulum5. Chromatin6. Nucleolus7. Cytoplasm8. Nucleus9. Smooth endoplasmic reticulum 10. Golgi vesicle11. Golgi apparatus12. Lysosome

Explanation:

which is the correct way to reheat potentially hazardous food?

Answers

The State Sanitary Code now requires that the entire mass of all cooked and refrigerated potentially hazardous food which is to be reheated must be reheated to 165 degrees Fahrenheit or above within two hours, and held above 140 degrees Fahrenheit until served.

- hope this helped <3

With regard to gender and the brain research has shown that

Answers

Answer:

variations between the sexes are smaller than variations within each sex

Explanation:

compare and contrast classical and operant conditioning

Answers

Both are processes that lead to learning. Classical conditioning pairs two stimuli and works with involuntary responses, while operant conditioning pairs behavior, response, and works with voluntary behaviors.

In classical conditioning, the involuntary response is seen, while operant conditioning is based upon the learning experience. An organism will perform more or less based on its experience with operant conditioning.

What are classical conditioning and operant conditioning?

In classical conditioning, the stimulus is given and an involuntary response is observed. The Pavlov experiment on dogs is one example. He gave food to the dog and rang the bell at the same time for some days. After that, he only rang the bell, and the dog salivated without the food. Here, salvation is an involuntary response to the stimulus (bell ringing).

In operant conditioning, animals perform actions based on their experience. Example: A mouse is put in a box with an electric supply and food supply. When the mouse accidentally presses the electric switch, it gets an electric shock. This is negative reinforcement, and the mouse is less likely to perform the same function again. When it pushes the food lever, the food comes from the food box. This is positive reinforcement. The mouse is more likely to perform this.

Hence, in classical conditioning, the involuntary response is seen. Operant conditioning is based on learned experience.

To learn more about conditioning, refer to the following link

https://brainly.com/question/17583598

#SPJ5

Name a process in plants that uses oxygen. Compare the raw materials and products of this process with those of photosynthesis

Answers

Answer:

Cellular respiration uses oxygen. Comparisons below in explanation.

Explanation:

Plants do both photosynthesis and cellular respiration. They make their own food (photosynthesis) and break it down to make energy (cellular respiration). Cellular respiration uses oxygen, while photosynthesis doesn't (it is a product).

Photosynthesis has this as its general chemical equation:

[tex]6CO_2 +6H_2O[/tex] ⇒ [tex]C_6H_{12} O_6 + 6O_2[/tex]

Cellular respiration has this as its general chemical equation:

[tex]C_6H_{12} O_6 + 6O_2[/tex] ⇒ [tex]6CO_2 + 6H_2O[/tex]

As you can see, the raw materials of cellular respiration (glucose and oxygen) are the products of photosynthesis. The products of cellular respiration (carbon dioxide and water) are the raw materials used in photosynthesis.

Which statement below accurately describes how sweating helps maintain homeostasis?

A. Skin cells absorb water into the body, which absorbs heat and cools the cells
B. Water on the skin evaporates into the air, pulling heat from the body
C. Water condenses on the skin and absorbs heat from the body
D. Water on the skin evaporates into the air, pulling heat out of the air around the body

Answers

Answer:

A. Skin cells absorb water into the body, which absorbs heat and cools the cells. Please mark me brainliest  

Explanation:

Answer:

B

Explanation:

Water on the skin evaporates into the air, pulling heat from the body, accurately describes how sweating helps maintain hemostasis.

Which of these statements about the theory of evolution are correct

Answers

What are the statements?

Answer:

the correct ones:

1. Organisms have changed over time and could continue to change in the future

2. Darwin's theory of evolution was influenced by ideas from others

4. Organisms evolved through natural selection.

the false one:

3. The theory states that organisms will remain the same throughout the history of Earth

how does the loss of species affect the entire ecosystem​

Answers

Answer:

Declining biodiversity lowers an ecosystem's productivity (the amount of food energy that is converted into the biomass) and lowers the quality of the ecosystem's services (which often include maintaining the soil, purifying water that runs through it, and supplying food and shade, etc.).

Answer:

"When a species becomes extinct, they reduce the variety of animals, plants, or bird species from that ecosystem resulting in the extinction of the other species that were dependent on them. Different species are playing different roles in the ecosystem to maintain a balance of the world." Credits to outside sources that it won't let me say :(

What prevents liquids from mixing with water

Answers

Explanation:

hydrogen bonds makes liquids not mix in with water

why do trees sometimes get white spots on it

Answers

Answer:If you see a suspicious abundance of white spots on your twigs, branches, or leaves, you may have an infestation of scale insects, which are parasites of plants and feed on internal plant fluids. The white spots that you see are in fact thousands of tiny white bugs.

Explanation:

¿Qué es un reflejo y un ejemplo?

Answers

Answer:

an instance of reflecting especially : the return of light or sound waves from a surface. 2 : the production of an image by or as if by a mirror. Here is an example , A reflection is defined as a thought or writing about something that happened in the past, or what one sees when looking into a mirror or a body of water. What a girl sees in the mirror when she puts on makeup is an example of reflection.

Explanation: hope that helps

i decided to be a parasitologist because?​

Answers

Answer:

Parasitology is best suited to a person with inquisitive mind and interest in research. There are virtually unlimited research opportunities. The variety in basic and in applied research areas of parasitology exist in fields from the molecular level to the global level is unsurpassed in another field of biology.

Explanation:

im from philipinnes:)

Using the information in Model B as a reference. Which of the following from the elephant is directly available to the lion?

Grass

Respiration

Biomass

Waste


I need this answer quick please!

Answers

Answer:

Biomass

Explanation: Grass is not available in its original condition as it's digested.

Respiration doesn't make any sense.

Waste including faecal matter is removed from the organism via urinary and digestive systems.

Biomass is what the lion consumes.

MIXTURE OF WATER AND SOLUTE are called

Answers

Answer:

A solution is another name for a homogeneous mixture. ... Salt dissolved in water is a solution. The major component of a solution, called the solvent, is typically the same phase as the solution itself. Each minor component of a solution (and there may be more than one) is called the solute.

Explanation:

Explanation:

A solution is another name for a homogeneous mixture. ... Salt dissolved in water is a solution. The major component of a solution, called the solvent, is typically the same phase as the solution itself. Each minor component of a solution (and there may be more than one) is called the solute

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