An experiment that has only one variable changed

Answers

Answer 1
a controlled experiment

Related Questions

Use the drop-down menus to answer the questions. the principle of dominance is a inheritance pattern. it states traits that are mask the traits that are .

Answers

The  principle of dominance is a Mendelian inheritance pattern. It states traits that are dominant  mask the traits that are recessive.

What is genetics?

Genetics is the study of inheritance, the foundation of genetics was laid by Gregor Mendel. According to Mendel, the units of inheritance were called factors and are today called genes.

The  principle of dominance is a Mendelian inheritance pattern. It states traits that are dominant  mask the traits that are recessive.

Missing parts:

The principle of dominance is a ______ inheritance pattern.

It’s states traits that are ______ mask the traits that are______

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Answer:The principle of dominance is a

✔ Mendelian

inheritance pattern. It states traits that are

✔ dominant

mask the traits that are

✔ recessive

.

Explanation:

Which method provides the most accurate evidence for scientists to use when determining evolutionary relationships between two species of animals?
O Identifying fossil patterns in rock strata where the animals live
O Looking for similar vestigial structures in both species of animals
O Comparing genetic sequences in the animals using samples of DNA
O Looking for similarities in the coloration and eating habits of the answer

Answers

Comparing genetic sequences is the most accurate way of determining evolutionary relationships. This is a quantitive measure, ( it uses numbers) we can use gene sequencing to identify how much of the genetic sequence in A is the same in organism B. The greater the similarities the more likely it is they have recently evolved from a common ancestor. The closer the ancestor, the less time has passed which means there’s been less time to develop mutations a base variation. That’s why there’s more genetic similarities between two things that are closely related.
Hope that makes sense

Plants growing in the dark start to fall over because they can no longer
support their own weight. Students want to find out why this is happening.
Which of these is a good hypothesis for an investigation of the problem?

OA. The plants need to absorb glucose from the soil so they can have
more energy.

OB. The plants should start using protein in order to support their
bodies.

OC. The plants need sunlight so they can produce more cellulose for
support.

OD. The plants need more water in order to keep their cellulose from
breaking down.

Answers

Answer: B

Explanation: its ez

why viruses are kept in border line of living and non-living things.​

Answers

They show characteristics of living and non-living things. Example- they can reproduce (characteristic of a living thing)
A characteristic of a non-living thing would be they don’t have cells

I really need help my grades go in tonight and this is my last day you will get full points

Answers

Answer:

the flat horizontal lines indicate phase change

Explanation:

As the substance changes phase from solid to liquid and liquid to gas, the temperature remains contant due to latent heat energy.

Energy is being used to break the intermolecular bonds during phase change, therefore there is no change in temperature.

which of the following statements best captures the main point of paragraph 4? a cell is the smallest unit that is truly alive. all cells are surrounded by a cell membrane. cytoplasm is gell-like material that fills all cell. plant cells have cell walls

Answers

Answer:

all cells are surrounded by a cell membrane

B because it’s right and it is what it is

Albinism is a recessive trait. A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation). What is the probability that their first child will be an albino

Answers

Answer:

use the generation tree starting by the grandparents as first generation and the parents as second generation until the child as third generation

The man and woman both have albino parents (aa) so one of their alleles will be for the albino trait (a). But since they both have normal pigmentation, their other allele must be for the dominant pigmented trait (A), making their genotypes heterozygous (Aa). If you make a quick punnet square with each of their genotypes on a side, there is a 1/4 or 25% chance that the combination of their alleles will result in an albino (aa) child.

Can someone help me please?

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The kind of population growth depicted by the graph is exponential growth.

What is exponential population growth?

It is a kind of population growth that takes place in an environment where the population has no limiting factors.  In order words, there are unlimited resources without any hindrance to the growth of the population.

Such a population grows rapidly as soon as it is able to adapt to its environment and continue growing at maximum biotic potential.

A graphical illustration of the exponential growth usually forms a J shape curve.

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Which element is found in nucleic acids but not in amino acids
a. carbon
b. hydrogen
c. nitrogen
d. phosphorus

Answers

Answer:

d. phosphorus

Explanation:

Phosphorus is the only element that is identified with nucleic acids.

Hope This Helped

What do we need from producers in order
to sustain all living organisms on Earth?
A. Producers need to harness solar energy.
B. Producers need to release energy.
C. Producers need to release carbon dioxide.
D. Producers need to break down energy from food. What is the answer

Answers

Answer:

d

Explanation:

Match each field of study with its main focus.
Anthropology
?
Hydrology
?
Meteorology
?
Geophysics
?
Human culture
Water
Inside of Earth
Climate

Answers

Anthropology=human culture, hydrology=water, meteorology=climate, and geophysics=inside of earth.

Hope this helped!

HELP!! Rank the following forms of water from most common (1) to least common (4) on Earth.
(a) ground water
(b) rivers and lakes
(c) glaciers
(d) oceans and seas

Answers

ocean and seasriver and lakesglacierground water.

d\b\c\a

What causes the doldrums to be calm winds?
o a. mountain ranges provide friction, slowing the doldrums.
b. trade winds from the north and south collide, pushing the air up.
c. earth revolves around the sun, keeping doldrums stationary.
d. frequent storms bring heavy precipitation, pushing the air down.

Answers

Earth revolves around the sun, keeping doldrums stationary causes the doldrums to be calm winds. Thus, the correct option is C.

Why are the doldrums so calm?

The Intertropical Convergence Zone, also known as the doldrums or calms by sailors due to its constant lack of wind, is the area where the northeast and southeast trade winds meet. It encircles the Earth near the thermal equator, however its exact location changes with the seasons.

The sunlight beams down directly on the area around the equator, the Doldrums are caused by solar radiation from the sun. Instead of blowing horizontally, this heating causes the air to warm and climb straight up. As a result, there is little or no wind for weeks at a time.

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Why isa DNA replication regarded as semi conservative?

Answers

Answer:

each helix that is created contains one strand from the helix from which it was copied.

Explanation:

Where is the nucleus usually located?
A. outside of the cell
B. in the center of the cell
C. moves between cells

Answers

Answer:

B

Explanation:

usually in the center . depends on what cell prokaryotic or eu

in the center of the cell

What is a control group?

A. An experiment where you only test two variables at a time.

B. An experiment that you don't change any variables.

C.An experiment where you only make quantitative observations.

D An experiment where data is collected.

Answers

Answer:

B. An experiment that you don't change any variables.

Answer:

B. An experiment that you don't change any variables.

Explanation:

A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple?.

Answers

The proportion of the offspring from the second cross that will be purple is 1/2 because parents are heterozygous.

What is incomplete dominance?

In genetics, incomplete dominance makes reference to the phenomenon where both alleles are expressed in heterozygous individuals.

In this case, parents are heterozygous and therefore they can produce three types of offspring.

In this case, the genetic crosses include

Parental lines (P) AA x aaFilial 1 (F1) 100% AaFilial 2 (F2) generation

                                              A          a

                                     A      AA       Aa

                                     a      Aa         aa

In conclusion, the proportion of the offspring from the second cross that will be purple is 1/2 because parents are heterozygous.

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The proportion of the offspring from the second cross will be purple is 1/2, i.e. 50% of the offspring will be purple.

What is Incomplete Dominance?

Incomplete dominance may be defined as a phenomenon in which the F1 hybrid exhibits the characters intermediate for the parental genes.

Due to the heterozygous nature of both parents in the F1 generation, they produce offspring in the genotypic and phenotypic ratio of 1:2:1.

The Punnett square for this cross is described below:

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1. Why is Maya Lim excited about classroom bioprinters? 2. What parts of Maya Lim's job as a chemical engineer sound interesting to you?

Answers

Classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.

What is a bioprinter?

A bioprinter is a device that combines cells and transcriptional growth factors, in order to generate structures similar to tissues and organs.

Moreover, a chemical engineer is aimed at exploring the chemical properties of matter to develop processes and devices.

In conclusion, classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.

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Que seres vivos son heterotrofos ?

Answers

un organismo que deriva sus requerimientos nutricionales de sustancias orgánicas complejas.


Which of these types of blood cell is not a type of white blood cell?
A. Lymphocyte
OB. Neutrophil
OC. Platelet
O D. Macrophage

Answers

Answer:

Platelets

Explanation:
________________________________________________________
Platelets are not a type of white blood cell because they only help treat wounds and slow down/stop you from bleeding.

they don't remove any germs. they only help treat your wound.
________________________________________________________

Hope this helped :)

This type of blood cell is not a type of white blood cell is C. Platelet.

What is a platelet?

Platelets are not a type of white blood cell. They are actually small, colorless cell fragments that are involved in the clotting process of blood. White blood cells, on the other hand, include various types such as lymphocytes, neutrophils, and macrophages, which play important roles in the immune response and defense against infections.

Platelets, also known as thrombocytes, are small cell fragments that circulate in the blood. They are formed in the bone marrow along with other blood cells. Platelets play a crucial role in hemostasis, which is the process of blood clotting to prevent excessive bleeding.

When there is an injury or damage to blood vessels, platelets are activated and aggregate at the site of injury. They form a plug to seal the damaged blood vessel and initiate the clotting cascade, which leads to the formation of a blood clot.

The correct answer is C. Platelet.

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Explain how a stent can be used to prevent a heart attack

Answers

Answer: each year Americans get a metal mesh tube called a stent inserted into a clogged artery. It pushes back arterial plaque, allowing for better blood flow. It can save your life during a heart attack but it won’t prevent one’s to come in the future

Substance A has a specific heat capacity of 0.452 J/g℃, Substance B has a specific heat capacity of 2.64 J/g℃. If an equal mass of both substances at room temperature was placed in a heated room, which substance would you expect to heat up faster?

Substance A or B?

Answers

The substance would you expect to heat up faster is Substance A, which has a specific heat capacity of 0.452 J/g℃.

What is specific heat capacity?

The specific heat capacity is the amount of heat necessary to elevate 1 degree 1 kg of the substance. Its unity is J/gºC. We can calculate the heat that changes the temperature of a substance by the equation:

Q = mcΔT

Where Q is the heat, m is the mass, c is the specific heat capacity, and ΔT is the change in the temperature.

Thus, Substance A, has a specific heat capacity of 0.452 J/g℃.

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What could be a good effect of a mutation?
A. DNA does not function properly.
B. DNA is destroyed.
C. Less variety in a population.
D. More variety in a population.

Answers

Answer:

The answer is D

Explanation:

because there different type which creates variety

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which factor are the species of birds responding to in the environment?

a.) symbiosis
b.) competition
c.) parasitism
d.) omnivores

Answers

Competition factor are the species of birds responding to in the environment. Thus, the correct option is B.

What is competition?

If numerous bird species eat on the same tree species, there will be fierce competition for food. As a result of the competition, each species will seek out a certain portion of the plant to feed on, most likely the part of the plant where it will be easiest to outcompete the competitors for food.

As a result, we may deduce that the right response is "They have evolved to diverse niches as a result of competition."

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Answer:

simply jus competition

Which of the following is a way that minerals are used?
a. industry
b. construction
c. technology
d. all of the above
Please select the best answer from the choices provided
O

Answers

Answer:

maybe its are technology??

which two mammals do you think is the least closely related? why?

Answers

Either the Porifera (sponges) or the Ctenophores (comb jellies). The jury is still out on which group branched off the main animal line first.

Answer:

Chimpanzees and man

Explanation:

Ever since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.

But there are actually two species of apes that are this closely related to humans: bonobos (Pan paniscus) and the common chimpanzee (Pan troglodytes). This has prompted researchers to speculate whether the ancestor of humans, chimpanzees, and bonobos looked and acted more like a bonobo, a chimpanzee, or something else—and how all three species have evolved differently since the ancestor of humans split with the common ancestor of bonobos and chimps between 4 million and 7 million years ago in Africa.

The international sequencing effort led from Max Planck chose a bonobo named Ulindi from the Leipzig Zoo as its subject, partly because she was a female (the chimp genome was of a male). The analysis of Ulindi's complete genome, reported online today in Nature, reveals that bonobos and chimpanzees share 99.6% of their DNA.

Renewable energy

do you think renewable energy is gaining attention and progress is being made to increase the use of harnassing natural renewable power?


what do you think are the barriers that are preventing us from utilizing more renewable energy sources?​

Answers

Answer:

yes it is doing

Explanation:

Renewable sources are those which can use again and again . We should use them to protect our natural resources

Which sentence describes a river?
A. It contains water that is always in motion.
B. Many unusual organisms live there due to its unique water
chemistry.
C. It protects land from flooding by absorbing the force of ocean
storms.
O D. As sediments build up, it can turn into a marsh.

Answers

Answer:

I believe the answer is A; It contains water that is always in motion.

Explanation:

How does the circulatory and respiratory system work together?

Answers

They work together to provide oxygen to the body .

what are the functions of plasma membrane??



btw hii​

Answers

Answer:

Hi

Explanation:

It separates the content of cell from their external environment.

It controls the entry and exit of materials in nd out of cell

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