Need help. ASAP What are considered characteristics of science? Select all that apply. - Scientific experiments are not falsifiable. - Scientific experiments are peer-reviewed. - Scientific conclusions are based on anecdotal evidence. - Scientific phenomena are observable. - Scientific hypotheses are testable.
Answer:
- Scientific experiments are not falsifiable.
- Scientific experiments are peer-reviewed.
- Scientific hypotheses are testable
Explanation:
The scientific method refers to the process of examination of scientific hypotheses. This method is rigorous and requires 1-to raise questions about an observed phenomenon, 2-to produce an experiment and 3-to confirm this hypothesis by analyzing the results. The last step of scientific research is the peer review process, where independent researchers (usually 2-3 researchers) review the observed evidence in order to confirm or reject the results obtained from the experimentation. This hypothesis must also be testable, ie, it is imperative that it can be confirmed in further experiments.
Answer:
thanks for free points )alalalalala
help/.........................
Answer:
I would say B because they are trying to see which one the prefer
a sample that does not reflect the population would result from:a sample that does not reflect the population would result from: A) people lying when they answer survey questions B) questions that are poorly worded C) interviews influencing responses to questions D) under-coverage
Answer:
D) Under-coverage
Answer:
D
Explanation:
If a DNA sample has 20% adenine (A), what percent of thymine is present in the same DNA?
Differentiate between eukaryotes and prokaryotes.
Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.
hello,
here is your answer:
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Eukaryotes:
(1) Nucleus is present
(2) Cell membrane and cell wall is present
(3) There are many chromosomes
(4) Posesses membrane bound organelles
Prokaryotes:
(1) Nucleus is absent
(2) Cell membrane and cell wall is absent
(3) There is a single chromosome
(4) Lack membrane-bound organelles
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hope this helped,
:)
Allison and Heather are going to conduct an experiment to see whether salt affects the growth of plants. They gather five groups of identical plants and give the plants in each group water with a different salt concentration. What is the outcome variable (dependent variable) for their experiment?
Answer:
The dependant variable is the growth of the plants.
Explanation:
The independent variable is what changes the dependent variable.
for example, the type of salt concentration ( Independent variable ) is/ isn't going to change the growth ( dependant variable ) of the plant.
The dependant variable is the growth of the plants.This is the outcome of the experiment in which salt affects the growth of plants.
What are plants?Plants are the eukaryotes means they are multicellular organisms and they belong to the kingdom Plantae. So, the scientific name of plants are Plantae and its domain is Eukaryota.
The plants are of many types such as shrubs, herbs, mosses, ferns, trees and they grow on a particular place by absorbing inorganic substances and water from the soil through the roots.
Plant are also known as autotrophs as they prepares there own food in the presence of sunlight. Due to chlorophyll present in them the plants shows green colour.
Plants are also known as producers because they produce food to feed others.
Therefore, the dependant variable is the growth of the plants.This is the outcome of the experiment in which salt affects the growth of plants.
Learn more about plants here:
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A teacher says she has identified an organism with these characteristics: eukaryotic, multicellular, autotrophic, and a cell wall made of cellulose. Which kingdom is the teacher describing?
If you pumped contaminated water from an aquifer, cleaned the water and pumped it back in what would happen?
Question 2 options:
The water would be re-contaminated by rock and soil in the aquifer
The water would clean the aquifer
It’s impossible to know what would happen
The water would be clean and stay clean
Answer:
It’s impossible to know what would happen
Explanation:
If contaminated water is pumped form an aquifer, cleaned and pumped back, it would be impossible to know what would happen unless the source of the contaminant is known.
If the source of the contaminant is known and removed before the water is pumped back into the acquifer, the water would be clean and stay clean provided that all the water was initially pumped off. If the source of the contaminant is not known, it would be difficult to predict what would happen.
All plants and some algae have a complicated life cycle that includes both a multicellular diploid _______ stage and a multicellular haploid _______ stage. This type of life cycle is called _______.
Answer: sporophyte, gametophyte, alternation of generation
Explanation:
Alternation of generation is a kind of life cycle seen in plants and algae in which the diploid asexual and haploid sexual stages exist. A sporophyte is multicellular and diploid which is an asexual stage. It produces the haploid spores through meiosis. The haploid spores germinate to produce haploid gametophyte. The gametophyte produces gametes by the process of mitosis.
3. Lawrence, Kansas and Nashville, Tennessee occupy similar latitudes. Why is one found in a grassland and the other in a forest biome
Answer:
The distance between Lawrence, Kansas and Nashville, Tennessee is 501.74 miles. So they are really far apart.
The location of Lawrance, Kansas is:
Latitude: 38.9560 Longitude: -95.2520.
And for Nashville, Tennessee is:
Latitude: 36.174465, Longitude: -86.767960.
So while the Latitudes are similar, the longitudes are not, and this is why you can see that the geography of each place is different.
Which of the following characteristics describes water’s ability to act as nature’s solvent? The polar nature of water molecules allows other polar and ionic substances to dissolve easily in water. The polar nature of water molecules repels hydrophilic compounds, preventing dissolution. The nonpolar nature of water molecules allows polar substances to dissolve easily in water. The polar nature of water molecules attracts hydrophobic compounds, encouraging dissolution. Assessment question An important property of water molecules is their capability to resist separating from one another call
Answer:
Water dissolves many biomolecules, because they are polar and therefore ... that acts as a solvent and surrounds a solute species) with a water solvent; also ... a substance capable of dissolving other polar molecules and ionic compounds. ... are either polar or charged, water readily dissolves these hydrophilic compounds.
Explanation:
Cell with membrane bound organelles and a nucleus
Answer:
Eukaryotic Cell
Explanation:
Eukaryotic cells have membrane bound organelles and a nucleus while Prokaryotic cells do not.
1. What would be the independent and dependent variable in this experiment? 2. What would be considered the control group?
Answer:
1. independent variable- how long you wait after exercise/when you measure you bpm after x minutes of rest.
dependent variable- your bpm after exercise and waiting x minutes
2. Your heart rate while at rest/ in homeostatis
Hope this helps!
Explanation:
Why is a Mango tree more evolved than a Bacteria or a Mushroom.
Answer:
Mango tree is more complex and evolved because, it is eukaryotic, autotrophic, terrestrial and a sporophyte with covered seed. The bacteria is a unicellular prokaryote and fungi is heterotrophic, simple thallophyte with no tissue system.
What is removed to form a peptide bond between two amino acids? A. a water molecule B. an H+ ion C. an OH- ion
Answer:
A. water molecule
Explanation:
Differences between Elephant Grass and Tridax
Answer:
Elephant Grass and Tridax are widespread weed and pest plant. Difference between Elephant Grass and Tridax:
Elephant grass is species of grass family while Tridax is a species of a flowering plant.Origin of Elephant grass is Africa and now found everywhere in teh world and Tridax is native to Amrica.Leaf color of Elephant grass is purple while leaf color of Tridax is green and flower is of white or yellow color.Elephant grass reproduce through budding and seedlings while Tridax reprduce trhough pollination.The main difference between the Elephant Grass and Tridax is that the Elephant Grass belogs to the grass family while Tridax belongs to the flowering plants.
Elephant Grass:
It is species of grass family. It was originated in Africa. The leaf color is purple. It reproduce by budding and seedlings.Tridax:
It is a species of a flowering plant.It is native to American weed.The leaf color is green and flower is of white to yellow color.It reproduce by pollination.The main difference between the Elephant Grass and Tridax is that the Elephant Grass belogs to the grass family while Tridax belongs to the flowering plants.
To know more about Tridax,
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What is the function of epithelial tissue in our body?
Answer:
Functions of epithelial tissue:
i. Epithelial tissue covers the body outside and lines the various cavities inside.ii. Epithelial tissue lines the hollow organs, body cavities, blood vessels and ducts.iii. Cells are rested on thin, doubled layered, non-cellular basement membrane.iv. Epithelial tissue has nerve supply of its own.v. Epithelial tissue is avascular (a = without, vascular = vessel), i.e. it lacks its own blood supply and hence, obtains nutrients which diffuse out of blood vessels.vi. Epithelial tissue has the power of division and regeneration. The old injured dead cells are sloughed off regularly and are replaced by new ones.A student gathered two boxes of the same size made of different materials: glass and clear plastic. She placed them on a windowsill in the sun for an hour, and then measured the temperature of the air in each box. What is the temperature of the air in this experiment? A. independent variable B. random C. dependent variable D. control
Answer:
C. Dependent variable
Explanation:
The temperature of the air in each box is the dependent variable because it is the variable that is affected/changed by the IV
The independent variable is the type of material of the box, because it is the variable being changed by the experimenter.
Answer: Dependent variable
Explanation: I took the test :>
What is the endosymbiotic hypothesis?
Answer: What does the endosymbiont hypothesis propose? It proposes that early eukaryotic cells acquired the precursors of mitochondria and chloroplasts by engulfing certain types of bacteria. ... Mitochondria, chloroplasts, and centrioles in eukaryotic cells each contain their own minute and unique supply of DNA.
Explanation:
The first piece of evidence that needed to be found to support the endosymbiotic hypothesis was whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA. This was later proven to be true for DNA, RNA, ribosomes, chlorophyll (for chloroplasts), and protein synthesis.
The membrane around the vacuole
is
called
Answer:
Also called the vacuolar membrane, the tonoplast is the cytoplasmic membrane surrounding a vacuole, separating the vacuolar contents from the cell's cytoplasm.
In C3 plants the conservation of water promotes _____. In C3 plants the conservation of water promotes _____. photorespiration a shift to C4 photosynthesis photosynthesis the opening of stomata the light reactions
Answer:
The correct answer is "photorespiration".
Explanation:
Photorespiration is a process in plants, where molecular oxygen is taken in a light-dependent manner. Photorespiration is often considered a wasteful pathway because it competes with the Calvin cycle, which is much more efficient. In C3 plants the conservation of water promotes photorespiration. This occurs when the C3 plants close its stomata because the environment its too hot, or the carbon dioxide concentration drops to about 50 ppm.
Glucose molecules from food sources provide energy to the cells of the human body. After a person eats, the level of glucose in their blood increases. If a person's blood glucose level becomes too high, a hormone in the pancreas, known as insulin, is released. Insulin helps move glucose out of the bloodstream. This causes the blood glucose level to decrease and return to equilibrium. The production of insulin is a mechanism that regulates the human body's internal environment and aids in
Answer:
regulating blood sugar levels
Explanation:
The primary function of the insulin hormone is to convert the excess glucose in the blood after a meal and store it for later. Glucose gets converted to glycogen, which is a compact molecule ideal for storage. When the body is need of energy, this glycogen is broken down to make up for the lack of glucose present in the blood.
Answer: the maintenance of homeostasis within the body system.
Explanation:
becauz mf
different between silk worm and honey bee
Answer:
one can fly and the other cannot because it is a worm and worms do not fly. honey bees also pollinate flowers, vegetables, fruit and other plants to help them grow and reproduce.
Explanation:
tis true
A survey that includes only people who choose to respond is susceptible to
A. Question-wording bias
B. Voluntary-response bias
C. Coding errors
D. Interviewer-induced bias
Answer:
I'm pretty sure its B. voluntary-response bias
Answer: B - Voluntary-Response Bias
Explanation:
An experiment that does not have a positive AND a negative control is a poorly designed experiment
a) true
b) false
Answer:
true
Explanation:
you frequently need a control which shows the experiments to stay the same. controls are very important.
Regardless of the ——— the metric system uses the ——- prefixes
Answer:
unit system
Explanation:
What is the function of proximal convoluted tubule???
Answer:
The proximal convoluted tubule : avidly reaborsbs filtered glucose into perticular cappilaries so that is all reabsorbed by end of the proximal tubule.
When elongated, tube –shaped cells from the lining of the intestine are treated with a certain chemical in a dish, the cells sag and becomes round blobs. the internal structures disrupted by this chemical are probably?
Answer:
When elongated, tube –shaped cells from the lining of the intestine are treated with a certain chemical in a dish, the cells sag and becomes round blobs. the internal structures disrupted by this chemical are probably microtubules
how many types of hyphae does the figure shown?
pls help me if you know
Answer:
Hyphae can also branch out and create a large network called a mycelium. There are two main types of hyphae. Septate hyphae have walls that separate individual cells, while coenocytic hyphae are one long continuous cell without walls.
Explanation:
Humans have the most urgent need for a continuous supply of ________. Group of answer choices d. water a. food b. nitrogen c. oxygen
Answer:
Option "C" Oxygen is the correct answer to the following question:
Explanation:
We know that, Just as a human absorbs oxygen into the body through inhalation, the oxygen enters into the whole body also in the blood and is used in the body by cells, so we can say that the human body needs a constant supply of oxygen. therefore, the appropriate option is true