they have approximately the same genetic material and it changes slightly over great periods of time
In an experiment, what is the factor that is tested? In an experiment, what is the factor that is tested?
Answer:
The factor that is tested is called the variable.
The variable is also what is changed in an experiment.
Hope this helped! :)
If we divide a drop into smaller and smaller parts, what will be the smallest particle that can be obtained and that will continue to be water?
If it hits a single atom, a "product" can be broken. But only until it is a single molecule will a "molecule" be separated. Of starters, oxygen, H2O, always appears like oxygen in millions. But if you split it into smaller and lesser parts, say half, you can divide it only until you get 2 hydrogen and 1 oxygen. It's no longer water if you divide it further. It's going to be another matter.
Hope this helps!
What is a reaction center?
Which of the following did you include in your response?
predator-prey relationships
competition
new habitat
increased food source
new situations allow a variety of traits to be favorable
The main point of environmental habitual life depends on the area an organism lives in.
Answer:
environmental habitual life depends on the area an organism lives in.
Explanation:
An ecology student noticed that Big Moose Lake has a higher nitrogen level than Brant Lake, but has lower algae growth. This data surprised her, because algae often flourish in water with high nitrogen level. Develop a hypothesis to explain the surprisingly low algae growth in Big Moose Lake.
Explanation:
A student of ecology researched about the low growth of algae in the Big Moose lake as compared to the Brant lake, though Big Moose lake has higher level of nitrogen and nutrients in it.
Nitrogen and phosphorous are an important element for the growth of algae in water bodies but in presence of pollutants in the water bodies and low oxygen content, the algae grows in slower rate. Besides, slower growth of algae may also affected by the acid rain that happens near Moose lake, which is harmful for algae growth due ti the presence of sulphur.
Which of the following is/are a nonrenewable source of energy that can be used to produce electrical energy? A. nuclear reactions B. wind C. solar energy D. all of these
Answer:
A.
Explanation:
Nuclear energy is a non-renewable energy source because the fuel it takes to produce the energy (usually uranium or plutonium) is rare.
Answer:
a
Explanation:
nuclear reactions are in fact nonrenewable and they are a source of energy
and the materials used to produce needs rare materials
(plz mark me as brainliest, that would be most appreiciated!)
Which piece of evidence supports the theory of continental drift? A. similar animal fossils found in South America and Africa B. transform boundaries found near tropical coastal regions C. large deposits of volcanic rocks found on the ocean floor D. fossils of plants that typically grew in Arctic climates found in Africa
many living things add oxygen to the oxygen cycle by performing ----?
Describe how mutations lead to genetic variations. Which appears to be more dangerous: the BRC1 or BRC2 mutation? Analyze a woman’s risk of dying of cancer if she carries a mutated BRC1 gene. How do heredity and inheritance relate to the data presented in these charts? What data would you need to see in order to draw conclusions about the effectiveness of preventive surgeries? What does the age at diagnosis tell you about the mutation? Explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.
Answer:
an EKG technician does not see any duration fro. baseline on the monitor what type of Line is the technician observing
Based on the information in the graph, what conclusions can be drawn about the rate of skin cancer in men
compared to that in women?
than in women
Answer:
The correct answer is - Skin cancer increased at a faster rate in men than in women.
Explanation:
Skin malignant growth is the most well-known disease in the entirety of mankind. Although white and albino skinned person individuals have a more possibility of building up this malignancy, consistent exposure to the sun with no skin security has caused an expansion in instances of skin disease regardless to the person's skin shading.
In spite of being a typical disease in ladies, skin malignancy has been developing exponentially among men as of late. This is primarily on the grounds that ladies will in general take more consideration of their skin and ensure it more regularly than men.
Thus, the correct answer is - Skin cancer increased at a faster rate in men than in women.
What happens when someone's brain has a low level of neurotransmitters?
A. Motor neurons aren't able to send messages to muscles,
O B. Action potentials can't form in the sensory neurons.
O C. The nervous system can't create hormones,
O D. Neurons aren't able to communicate with each other.
Answer:
Neurons aren't able to communicate with each other.
Answer: D
Explanation:
What do these characteristics all have in common?
These genetic traits can all be easily observed
Abdul put cress seeds on wet filter paper in dishes. He put 20 seeds in each dish. Every day he added 5 cm3 of water to each dish. He kept each dish at a different temperature. How many different temperatures did Abdul use?
Answer:
8 different temperatures
Explanation:
The annexed chart is required to answer this question and should have been provided.
From this chart, we can see that Abdul kept different dishes at 17, 18, 19, 20, 21, 22, 23 and 24 °C, and that at 22°C he experienced the highest number of germinated seeds.
Therefore, Abdul used 8 different temperatures.
What is the function of insulin?
Insulin is a hormone produced in the pancreas (gut) .
Function:
Insulin regulates the amount of glucose in the blood. The lack of insulin causes a form of diabetes.
Explanation:
Insulin is a hormone secreted by the beta- cells of Islets of Langerhans of pancreas.
Its function is to regulate blood sugar level in the body by decreasing it. If the sugar level of the blood increases, it is detected by the pancreatic cells and it releases insulin.
Hope it helps.
If you have any query, feel free to ask.
which of the following describes research that would be considered basic science
Answer:
B. A professor is studying fish
Sickle cell anemia is a genetic disease caused by a recessive allele. Sickle cell anemia affects the hemoglobin in red blood cells, making them the shape of crescents instead of disks. The disease can cause pain and damage blood vessels. A genetic counselor meets with a man and a woman that both are carriers of sickle cell anemia. Carriers have one copy of the sickle cell allele and one copy of the allele for making normal hemoglobin. What is the probability that the couple would have a child that was also a carrier for sickle cell anemia
Answer:
1/2
Explanation:
A genetic counselor meets with a man and a woman that both are carriers of sickle cell anemia.
The sickle cell anaemia genotype is ss where for producing normal haemoglobin, we have SS or Ss (Carrier).
When both man and woman are carriers, we have
S. s
S. SS. Ss
s. Ss. ss
Thus, the probability that the couple would have a child that was also a carrier for sickle cell anemia is 2/4= 1/2.
Answer:
50%
Explanation:
. The negative charges of one water molecule is attracted to the positive in another, causing them to flock together. This property is known as _____________. Adhesion Repulsion Cohesion Revulsion
Answer:
Cohesion
Explanation:
The negative and positive sides of water molecules are attracted to each other and cause water to be attracted together and stick together.
This is called cohesion, when molecules of the same type stick together.
What is a pH in biology?
Answer:
pH is the measure of hydrogen ion concentration in a solution. It measures how acidic or how basic a solution is, on a scale of 0 to 14, where less than 7 is acidic, 7 is neutral, and greater than 7 is basic.
Answer:
A quantitative measure of an acid or basicity of aqueous or other liquid solutions. also stands for power of hydrogen
What are the factors that determine the level of harm an introduced chemical has on the environment? (Site 1)
Answer:
Following are the factors are given below:-
Explanation:
In general, the toxicity of a substance depends on the following factors.
Chemical type and inherent behavior. Dosage, in particular the link dose-time. Exposure route. Species. Stage in life, such as child, young adult, or an older adult. Gender. Fitness to drink. Metabolism. Allocation inside the organ. Excretion Human safety, including organ function and childbirth, requiring physical effects that can affect toxicity. Nutritional status Many chemicals are available. Circadian rhythms (the time of day caused by a medication or other substance)The major factors that determine the level of harm an introduced chemical have on the environment -
type of chemical concentration weather conditionssolubility in waterThe environment of the ecosystem and the health of organisms are affected by the use and the accumulation of persistent pollutants. The following are the factors that help in determining the level of harm of an introduced chemical:
type of chemical - types of chemicals determine the level of toxicity of a particular chemical.concentration - concentration of chemical dependency on the harm of the chemical.weather conditions - the chemical effect on weather also affects the level of harm.solubility in water - chemicals solubility in water affects harm on the organisms.Thus, The major factors that determine the level of harm an introduced chemical have on the environment -
type of chemical concentration weather conditionssolubility in waterLearn more:
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What type of data is recorded by the electrocardiograph?
Answer:
Electrical signals from your heart to check for conditions and illnesses that can be detected by this data.
Hypothesize about tumor growth. Scientists have shown that tumor growth is an example of positive feedback loops. Why is tumor growth an example of positive feedback? In your answer elaborate using the following terms stimulus, receptor, control center, effector, response.
Answer:
Tumor growth is a process associated with the expression of oncogenic genes
Explanation:
The tumor cells often share oncogenic receptors that are expressed during oncogenesis. For example, it has been shown that the epidermal growth factor receptor is often mutated in brain cancer cells, thereby encoding an oncogenic that is overactive. These receptors are responsive to stimulus of nearby cells and thus act as effectors that amplify tumorigenic signals. In consequence, during tumor progression, tumorigenic effector cells have an uncontrolled proliferation and antiapoptotic signals are predominant. The nucleus in the cell functions as a control center where tumor suppressor genes are transcribed to fight against such oncogenic cells.
what type of experiment is an obsevational study?
Answer:
onsider someone on the busy street of a New York neighborhood asking random people that pass by how many pets they have, then taking this data and using it to decide if there should be more pet food stores in that areac
Explanation:
I googled it!! (study.com)
Which of the following best describes what happens to a cells genetic material during the process of meiosis 2
First the cell starts as four daughter cells. They then combine to make one whole diploid cell, or parent cell. The meiosis process can only happen in eukaryotic organisms. Meiosis 2 starts with 2 haploid parent cells and ends with four daughter cells, which then maintains the number of chromosomes in each cell.
What would happen if sex cells underwent mitosis instead of meiosis
Answer:
If gametes (sperm and egg) were made by mitosis, then they would be diploid. ... A tetraploid zygote is not viable and will most likely miscarriage.
Explanation:
1. A _________ is formed when an _________ object blocks the path of light
2. A mirror works by __________the light that hits
Answer:
1.A _shadow_ is formed when an _ transparent _ object blocks the path of light
2. A mirror works by _reflecting_the light that hits
Explanation:
1. A shadow is made when an object blocks light. The object must be opaque or translucent to make a shadow. A transparent object will not make any shadow, as light will pass straight through it.
2.When photons — rays of light — coming from an object (your smiling face, for example) strike the smooth surface of a mirror, they bounce back at the same angle. Your eyes see these reflected photons as a mirror image.
Hope it helps you
When did people begin to notice that coastlines if continents fit together like a puzzle
a. when satellite begin taking pictures of earth from space
b. when Alfred Wegener propose the idea of continental drift
c. when early explorers traveled from Europe and Asia to the Americas
d. when geologists first started examining the fossil record of South America
Answer:
B. When Alfred Wegener propose the idea of continental drift
Explanation:
The first true explanation came from Alfred Wegener, who proposed the Plate Tectonic Theory. This theory stated, in a nutshell, that the continents different pieces that collided together at faults.
Technically, explorers found out this way back. If you consider this the answer choice, then C is your best answer.
Answer:
its c
your welcome
Some tools have various levels of graduations. For example, a ruler may have graduations for both millimeters and centimeters. When measuring the length of an earthworm, which graduations would allow for the most accurate measurement?
Answer:
I would say Millimeters
Explanation:
Millimeters are smaller than Centimeters and can measure the length of an earthworm most accurately.
Hope this helps.
Millimeters would allow for the most accurate measurement.
What is Measurement?Measurement is defined as the quantification of characteristics of an object or phenomenon which can be used to compare them with other objects or phenomena. It is a process of determining how large or small a physical quantity is compared to a basic reference quantity of the same type.
It helps us to compare unknown quantities with known quantities. This helps us make quantitative statements about how big, how long, how fast things are. Without measurements, the final product would be full of errors.
Example:- Speedometer is used to measure the speed of vehicles.
A ruler marked in millimeters is more unique than a ruler best marked in centimeters, a millimeter being a smaller unit than a centimeter.
Thus, Millimeters would allow for the most accurate measurement.
Learn more about Measurement, here:
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What happens when an atom gains an electron?
O.
A. It becomes a positive ion.
B. It becomes a negative ion.
OC. It has an increase in the number of neutrons.
Ο Ο
D. It has an increase in the number of protons.
SUBMIT
Answer:
b. it becomes a negative ion
Hope that helps.
what is the importance of active transport in animals
Answer:
Active transport is important for cellular function because it moves important items, such as calcium and glucose, into and out of cells.
Explanation:
Proteins sit on the cell membrane, with one part inside and one part outside the membrane. If these items don't cross the membrane, the cell can die.
hope this can help you
Set up 1: Add a spoon of yeast+cold water leave for 10 minutes and observe the foam formation Set up 2: Add a spoon of sugar and a spoon of yeast add room temperature water leave for 10 minutes and observe the foam formation Set up 3: Add a spoon of sugar and a spoon of yeast add ice cold water and close the mouth with a plastic paper leave for 10 minutes and observe the foam formation. Measure the height of the foam formed in all the three set up. Under your finding. Give reason for your observation
Answer:
The foam was found higher where the water temperatures were higher, then continued the height of the foam where the water was cold and lastly the ice water.
Explanation:
Yeasts undergo alcoholic fermentation, and perform a chemical reaction consisting of the following conditions:
That there is a substrate, that is, some reagent that the yeast can metabolize to give ethanol as a product, in this case it is sugar.
That there is a relatively anaerobic medium, that is why it is closed with film.
That the sea temperature approximately 30 degrees Celsius so that the fermentation is favored.
The bubbling that we see is nothing more than the chemical reaction that the yeast fungus produces when metabolizing the carbohydrate, which in this case is type A sugar, to give ethanol as a product. This chemical reaction releases gaseous components as fermentation occurs, that is, the more bubbling, the faster the reaction and the better the fermentation.
In the situation where the water was freezing and the foam or bubbling was lower regardless of whether it was closed by a plastic, because the extremely low temperature in the water slowed down the reaction rate of alcoholic fermentation.