How many factors should a well-designed experiment test at one time?
A)1
B)2
C)3
D) depends on the number of experiment variables

Answers

Answer 1

Answer:

A. 1.

Hoped it helps you.

Related Questions

In this module you will learn to identify the plant parts and their functions. Why do you think plants are important in our life?

Answers

Answer:

: Green Plants are the sources of energy for all oraganism. They trap the solar energy and convert it into chemical energy in the form of food(starch)and they give off oxygen. if all green plants would not be there then all the herbivores will die due to starvation and so will the carnivores.

:Plants are really important for the planet and for all living things. Plants absorb carbon dioxide and release oxygen from their leaves, which humans and other animals need to breathe.

Also many plants are very useful in field medicine.

:Roots of plants and trees reduce soil erosion by holding the soil firmly.

what is the specie level of an amoeba?​

Answers

Answer:

proteus

Explanation:

Amoeba is a single cell organism from kingdom protoctista

51. Evaluate each of the following, and write the answer to
the correct number of significant figures.
a. 97.381 + 4.2502 + 0.99195
b. 171.5 + 72.915 – 8.23
c. 1.00914 + 0.87104 + 1.2012
d. 21.901 – 13.21 - 4.0215

Answers

A I don’t really think it’s wrong but if it is I’m sorry

what are real-life (small) examples of smooth er, rough er, RNA, and ribosomes?
I'll give brainliest

Answers

Answer:

preparing a surface of painting

Explanation:

painters spray down the exterior of a house with ribosomes before applying the first coat,so the paint will stick better.

Explanation:

Real life example: ribosomes

A "real life example" would be, a car factory. Car instructions go in (mRNA), car parts put together (amino acid chain) then completed cars leave (proteins)

Advantage of natural classification of plant and animal?

Answers

Answer:

The natural advantage of plant is given bellow:

• it gives us oxygen.

• it gives us firewood and timber.

• it also gives us medicine.

The natural advantages of animal is given bellow:

• it gives meat.

• it gives us eggs.

• it helps to carry loads.

Two tumors located in the right kidney would be ______ tumors.

Answers

Answer:

malignant

Explanation:

If the question is asking malignant or benign the 2 tumor part would imply it’s malignant

Answer: Malignant tumours

which statement best explains the significance of meiosis {sex cell division} in evolution of a species?

Answers

Explanation:

meiosis help organism to replace worn out tissues

Chemosynthesis is the main source of
energy capture
A. where light energy is not available.
B. in oxygen-rich environments.
C. when water has a pH of 7.

Answers

Answer: the answer would be a

Explanation: because I had the same question too on acellus and got a right

Photosynthesis makes use of light energy while chemosynthesis is the main source of energy capture where light energy is not available.

What is photosynthesis?

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

The process begins with proteins absorbing light energy  which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.

Learn more about photosynthesis,here:

https://brainly.com/question/29764662

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What is the proper way to heat
a substance in a test tube
during an experiment?
Help due today
No links

Answers

Answer:

Do not put the test tube directly into the flame

The amount of liquid should be limited;it should not be more than half-filled

Mouth of the test tube should point away from yourself and anyone else

Enzymes are typically fibrous proteins.

True

False

Answers

I believe the answer to this is “False”

Explanation:

Enzymes are typically globular proteins.

Enzymes are mainly globular proteins - protein molecules where the tertiary structure has given the molecule a generally rounded, ball shape (although perhaps a very squashed ball in some cases). The other type of proteins (fibrous proteins) have long thin structures and are found in tissues like muscle and hair.

What is one benefit of using fossil fuels like coal for energy?

Answers

Answer:

coal is what makes our train move to transport goods

Explanation:

the pituitary gland produces hormones such as​

Answers

Answer:

ACTH, or Adrenocorticotrophic hormones.

Explanation:

They stimulate the production of a " stress " hormone, cortisal, and it maintains blood pressure and blood sugar levels.

p.s. thanks internet :)

The major hormones produced by the pituitary gland are:
ACTH: Adrenocorticotrophic hormone. ...
FSH: Follicle-stimulating hormone. ...
LH: Luteinizing hormone. ...
GH: Growth hormone. ...
PRL: Prolactin. ...
TSH: Thyroid-stimulating hormone.

What are ketones?
How can you tell if there are ketones in urine?
Under what conditions would the body make excess ketones that appear in the urine?

Answers

Answer:

if your cells don't get enough glucose, your body burns fat for energy instead. This produces a substance called ketones, which can show up in your blood and urine. High ketone levels in urine may indicate diabetic ketoacidosis (DKA), a complication of diabetes that can lead to a coma or even death.

Explanation:

What is the Dental formula for Human adult and Human child​

Answers

Answer:

Human: deciduous teeth: 212/212; adult = 2123/2123. Both childhood molars are replaced by adult premolars. Adult total is double the formula = 32

Explanation:

plz mark me as a brainlist i really need this

Answer:

adult = 2123/2123

Adult total is double the formula = 32.

human child=dental formula 2102/2102, indicating two incisors, one canine, zero premolars, and two molars in each quadrant.

Explanation:

Question 1 of 10
What are the basic units of a chemical element called?

Answers

Answer:

An atom is the basic unit of a chemical element. Atoms are made out of three main parts: protons, neutrons and electrons. Protons and neutrons are contained inside the very center of the atom, which is called the nucleus.

Explanation:

hope it may help you

Answer:

an atom

Explanation:

an atom is a basic element of chemical reaction.

an atom made of three parts

1. neutrons

2. protons

3. electrons

hope it helps u

The breakdown of fat produces
a. less than half the amount of energy than the breakdown of carbohydrates.
b. more than twice the amount of energy than the breakdown of carbohydrates.
C. the same amount of energy as the breakdown of carbohydrates.
d. less
less energy than the breakdown of proteins. .

Answers

The breakdown of fat produces: b. more than twice the amount of energy than the breakdown of carbohydrates.

Biological macromolecules can be defined as a very large molecule (structure) that comprises of covalently bonded organic atoms and smaller molecular structures (monomers).

Biological macromolecules are organized into four (4) main categories and these includes;

I. Nucleic acid: it comprises of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) which are the genetic codes (blueprints) for living organisms.

II. Carbohydrates: it is contained in energy-giving foods and it aids the functioning of the muscles, nervous system and other organs found in the body.

III. Proteins: it contains amino acids and it is responsible for maintaining the functioning of the body system.

IV. Lipids: these categories of biological molecules is mainly made up of fats and it is responsible for providing the body with long-term energy.

In Biology, lipolysis is a process which typically involves the breakdown of fat into glycerol and fatty acids, so as to produce the energy required by a living organism. Thus, the fatty acid that are produced during these process are released into the bloodstream of the living organism and transported to the tissue that uses the energy.

Generally, the breakdown of fat produces more than twice the amount of energy than the breakdown of carbohydrates because it provides long-term energy that is required by the body of living organisms to function properly.

A long note about Artificial Pacemaker (I WILL MARK YOU AS BRAINLIST PLS HELP)

Answers

Answer:

A cardiac pacemaker is a medical device that generates electrical impulses delivered by electrodes to cause the heart muscle chamber to contract and therefore pump blood by doing so this device replaces and/or regulates the function of the electrical conduction system of the heart. The primary purpose of the pacemaker is to maintain an adequate heart rate, either because the heart’s natural pacemaker is not fast enough or because there is a block in the heart’s electrical conduction system.

Explanation:

Hope this helps you

A zoo has a male and a female animal that look that look very alike. They put them in the same enclosure to see if they will breed.
a) Suggest why the zoo think the animals may be the same species? (1 Mark)
b) Describe what the zoo would expect to happen if the animals were of the same species. (1 Mark)
c) Describe another method that the zoo could use to check if the animals were of the same species. Explain your answer. (2 Marks)

Answers

A and bjdhdndkfjvendjg inclusive

Una galleta con chispas de chocolate y un helado con fresas, son ejemplos de:
A. Sustancia
B. Compuesto
C. Mezcla homogénea
D. Mezcla heterogénea

Answers

Una galleta con chispas de chocolate y un helado con fresas, son ejemplos de mezclas heterogéneas.

Una mezcla heterogénea está compuesta por dos o más sustancias diferentes, en donde es posible distinguirlas fácilmente ya que es una composición no uniforme. Las sustancias que lo forman no son representadas por ninguna fórmula química pero a su vez tienen sus propiedades particulares.

No se trata de una mezcla homogénea ya que la misma se trata de una mezcla uniforme en donde sus componentes no se pueden distinguir fácilmente. Esto significa que toda la mezcla posee las mismas propiedades. Unos ejemplos de mezcla homogénea son el agua de mar, café con azúcar, cerveza, etc.

Tampoco se trata de una sustancia ya que la misma se trata de cualquier componente que posee ciertas propiedades físicas y químicas estables que pueden detectarse fácilmente. Está compuesto de moléculas o átomos iguales, siendo ejemplos de sustancias: oxígeno, nitrógeno, etc. Además, no es posible separar una sustancia mediante ningún método.

Por último, tampoco se trata de un compuesto ya que el mismo se trata de una mezcla de distintos elementos que se combinan en una reacción, que pueden representarse mediante una fórmula química y que no pueden separarse o romperse salvo por procesos químicos puntuales. Es decir, está formado por moléculas con átomos distintos pero en la misma proporción, y siempre se trata del mismo tipo de molécula. Por ejemplo, el agua, que está formada por un átomo de oxígeno y dos de hidrógeno (H2O).

Para concluir, podemos decir que un elemento está formado por un solo tipo de átomo. Una sustancia se encuentra formada por mas de un elemento unido mediante un enlace químico. Un compuesto está formado por elementos distintos unidos, y una mezcla está formada por sustancias que pueden ser iguales o no, pero en cantidades aleatorias y que pueden separarse. En una mezcla homogénea, la composición es la misma en cualquier parte, y en la mezcla heterogénea la composición es variante.

Aprende mas sobre sustancias aquí: https://brainly.com/question/24312384

What is technology in earth and space science

Answers

Answer: machinery and equipment developed from the application of scientific knowledge.

Smooth muscle contractions are typically characterized as:
O voluntary
O somatic
O motor based.
O involuntary

Answers

Voluntary Muscles.

[tex] hope \: it \: helps \: please \: mark \: \\ me \: as \: brainliest[/tex]

Smooth muscle contractions are typically: Involuntary ( option 1 )

Smooth muscle contractions are made possible when myosin and actin filaments slide over each other and the hydrolysis of ATP provides the energy for this action. smooth muscle contractions occur without the interference of an individual hence is it an involuntary action.

Muscle that can be said to be voluntary is the skeletal muscle while Cardiac muscles are also classified as involuntary muscles

learn more : https://brainly.com/question/21538872


A student investigated the effect of different wavelengths of light on the rate of photosynthesis of the water
plant, Cabomba. The student used the apparatus shown in Fig. 6.1.

Answers

Answer:

Note: Before asking questions you should give your topic name. for example: Where is the title of the poem you're talking about?.

Which is a component of pseudoscience but not science

Answers

assuming that the options are explanation, facts, process, and beliefs, the answer would be beliefs because they are devoid of scientific evidence.

What is the difference between specialized plant and animal cells

Answers

Answer:

plant cells:.plant cells have cell wall

.plant cells have permanent vacules

.animal cells: animal cells don't have cell wall

.animal cells don't have permanent vacules

Animal cells have a centrosome and lysosomes while plant cells don’t have these. Plant cells have a cell wall, chloroplasts, and a large central vacuole while animal cells don’t have these.

PLEASE HELP ME FAST ASAP

Answers

Answer: C

Hope this helps

Some organisms, like lizards who bask in the sun, use ____________ to help regulate their ____________ environment.

Answers

Answer:

location, internal

whats a simple definition for ribosomes (an animal cell)?

Answers

Ribosomes (/ˈraɪbəˌsoʊm, -boʊ-/) are macromolecular machines, found within all living cells, that perform biological protein synthesis (mRNA translation). Ribosomes link amino acids together in the order specified by the codons of messenger RNA (mRNA) molecules to form polypeptide chains.

After suffering a stroke, JaneDoe finds that she cannot move her left arm. This would suggest that the stroke caused damage to the ___________________ lobe.

a. right temporal
b. right frontal
c. left occipital
d. left frontal
e. left temporal

Answers

Answer:

Choose D.  left frontal

Explanation:

Not sure but hope it helps.

Explanation:

Answer is Option 'D'. Left frontal

Carbohydrates stored in the liver are in the form of starch.

True

False

Answers

Answer:

It is false. carbohydrates are stored in form of glycogen.

The amoeba is a single-cell organism that gets food by engulfing its prey with outstretched parts of its cell membrane, and then bringing the food inside. Which process does an amoeba use to eat?

Answers

Answer:

amoeba (/

əˈmiːbə

/; less commonly spelt ameba or amœba; plural am(o)ebas or am(o)ebae /

əˈmiːbi

/),[1] often called an amoeboid, is a type of cell or unicellular organism which has the ability to alter its shape, primarily by extending and retracting pseudopods.[2] Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animal

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