Answer:
true
Explanation:
Doctors (or scientists) usually use this to make sure people aren't lying about the experience.
For example, some people might expect that if they take ibuprofen or Tylenol, they won't feel as much pain, so they might make themselves believe that they aren't feeling said pain. If you use a placebo group, you are less likely to have situations like that occur, and so your data becomes more accurate.
TRUE OR FALSE: Agricultural Scientists play a vital role in maintaining and expanding our nation's food supply.
i need help asap....
what process would allow plant cells to take water into their cells for use in photosynthesis ?
a. Osmosis
b. Diffusion
c. Active Transport
d. Exocytosis
Answer:
B osmosis
Explanation:
please five brainliest if you can, have a great day<3 :)
Answer:
a. Osmosis
Explanation:
Osmosis is the net movement of solvent molecules ,usually water from region of lower solvent concentration to a region of higher solvent concentration through a partially permeable membrane.
After the comma is instead into the sentence the sentence now seems to be asking whether or not the bird ate
Answer:
yes
Explanation:
probably did something else first
What explains why certain dead organisms in the past were not fossilized?
Answer:
They may not have skeletons, their body/bones were destroyed underground, the earth around them wasn't the correct type of rock, etc.
Explanation:
Only a small percentage of organisms are ever fossilized, and can only be fossilized under specific circumstances.
Carbohydrates provide many things, including:
Answer:
Carbohydrates are mainly found in plant foods. They also occur in dairy products in the form of a milk sugar called lactose. Foods high in carbohydrates include bread, pasta, beans, potatoes, rice, and cereals. Carbohydrates play several roles in living organisms, including providing energy
Explanation:
hope its help
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why velocity is regarded as a vector quantity?
Answer:
Because velocity has magnitude and direction, speed is not a vector quantity since it only has magnitude
For example, if a car is moving backwards with a speed of 40m/s
Your velocity is - 40m/s
Speed is 40m/s
Did the total number of new products with health claims increase or decrease between 1990 and 2000?
What is the process of nitrification?
Bacteria converts ammonia into nitrites and nitrates that plants can use.
Fungi convert nitrogen in dead plants into ammonium, which converts proteins into ammonia.
Nitrogen is converted into a useable form through lightning fixation.
Plant enzymes reduce nitrogen compounds into amino acids.
Answer:
Bacteria converts ammonia into nitrites and nitrates that plants can use.
Nitrification is a microbial process by which reduced nitrogen compounds (primarily ammonia) are sequentially oxidized to nitrite and nitrate. Ammonia is present in drinking water through either naturally-occurring processes or through ammonia addition during secondary disinfection to form chloramines.
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Fill in the blanks please I’ll mark you brainliest!
Answer:
16. a, research
Explanation:
you should form your hypothesis on research because based on what you researched is what will help you try predict the outcome of the experiment
Dalton’s theory was identified using
light microscope images of atoms.
the experimental results of other scientists.
water vapor and air experiments.
Answer:
Explanation:
Actually it was the experimental results of other scientists. The main stems of the theory was the indivisibility of small spheres (his image) that represented the elements he knew which reacted with other elements.
They seemed to give the same ratios in reactions (definite proportions) and multiple whole number ratios. Look up Lavoisier.
HELP ME 40 POINTS!!!
1.A single statement that describes the purpose or reason for conducting an 1 point
experiment without making a prediction.
2. The word simply states that the results obtained were due to chance and not the independent variable that the researcher changed or the situation that they engineered
3. This is a statement predicting the direction of a relationship between variables
4 it predicts the findings of study
To determine what sort of data table will be most useful or The purpose of an experiment is to test a hypothesis at least that's what i know. I do think "3. This is a statement predicting the direction of a relationship between variables" Is the right ansswer. Sorry if i'm wrong. :c
why old system of measurement isn't accepted nowadays
The image shows a vulture soaring over a rocky cliff. The arrows model the different ways energy moves between the sun, atmosphere, and geosphere.
Match each type of energy transfer to the arrows shown in the image. Describe how energy transfer helps the vulture soar above this rocky cliff.
Given what we know about the way energy moves through the Earth, we can confirm that the vulture uses the hot air currents that result from this movement of energy to soar above the cliff.
The energy from the sun travels through the atmosphere, then into the soil where it is absorbed. The soil then radiates the heat back out into the atmosphere.
Given that hot air rises, this radiated heat causes the formation of hot air currents that the vulture then uses to glide upwards in a circular motion.
The vulture planes over the hot air currents with its wings at an angle to climb, it goes higher the further it wishes to travel given that once at the desired height, it glides downward towards its destination.
To learn more:
https://brainly.com/question/2168401?referrer=searchResults
A kilometer is a longer distance than a meter
Answer:
That's true a kilometer is a longer distance than a meter (1,000 times longer)
Explanation:
Pepsin and Trypsin are enzymes. At what pH do they have the highest rate of reaction?
Answer:
It has an optimum pH of about 1.5. Trypsin's optimum pH is about 8.
Explanation:
This active trypsin acts with the other two principal digestive proteinases — pepsin and chymotrypsin — to break down dietary protein into peptides and amino acids. These amino acids are essential for muscle growth, hormone production and other important bodily functions.
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Which of the statements below correctly compares features of plant and animal cells?
Plant cells have a cell membrane, while animal cells have both a cell wall and a cell membrane.
Plant cells have ribosomes only on the rough ER, while animal cells have ribosomes in the cytoplasm.
Plant cells have a large central vacuole, while animal cells have many smaller vacuoles.
Plant cells have chloroplasts but no mitochondria, while animal cells have mitochondria.
Plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.
What are vacuole?Vacuole is defined as a region of cytoplasm-free, membrane-lined, and liquid-filled space inside a cell. A membrane-bound cell organelle known as a vacuole. The plant cell's equilibrium depends heavily on the vacuole. It participates in the regulation of cytoplasmic ions, pH, and the control of cell volume and turgor.
Animal cells lack a cell wall, whereas plant cells do. Animal cells lack chloroplasts while those of plants do. Animal cells have many little vacuoles, but plant cells only have one giant vacuole. Animal cells only have a cell membrane, but plant cells have both a cell wall and a cell membrane. Cell walls are used by plants to give the plant structure. Animal cells lack the organelles known as chloroplasts that are present in plant cells.
Thus, plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.
To learn more about vacuole, refer to the link below:
https://brainly.com/question/13948086
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Question 1(Multiple Choice Worth 5 points)
(06.04 LC)
The __________ system is responsible for moving blood cells throughout the body.
circulatory
endocrine
immune
respiratory
Answer:
The . .circulatory system is responsible for moving blood cells throughout the body.circulatory
I hope it helps
Answer:
Hii!! the answer is circulatory
Explanation:
Circulatory is the only responsible system for moving cells. The blood circulatory system, is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. Hope this helps! Bye bye.
Which of the following is not a functional group that can bond with carbon?
а
carbonyl
b
hydroxyl
C
sodium
d
phosphate
Sodium is not a functional group that can bond with carbon (Option C)
A functional group is a combination of atoms in a molecule that is capable of conferring particular chemical and physical properties.The most common functional groups include the carboxylic acids groups (CO2H), carbonyl groups (C=O), alcohol groups (-OH), ester groups (CO2R), and amine groups (NH2).Functional groups are observed along the carbon backbone of the biomolecules.This carbon backbone is made up of chains/rings of carbon atoms with the occasional substitution of an element (e.g., N or O).Learn more in:
https://brainly.com/question/4570051?referrer=searchResults
1. Which of the following is an observation?
(A) The piece of metal is red, so it must be hot.
(B) He likes to run.
(C) The child's block is orange.
(D) The building looks like it must have fallen down
In order to test the effects of a new drug, you isolate the messenger RNA molecules from both treated and untreated eukaryotic cells and separate them according to size using gel electrophoresis. In each lane of the gel, the shorter RNA molecules migrate more quickly through the gel and end up near the bottom of the gel while the longer RNAs migrate more slowly and remain near the top.
The samples that were loaded into each of the four lanes are as follows:
Lane 1: the primary RNA transcripts isolated from the nucleus of untreated cells
Lane 2: the primary RNA transcripts isolated from the nucleus of cells treated with the drug being tested
Lane 3: RNA isolated from the cytosol of untreated cells
Lane 4: RNA isolated from the cytosol of cells treated with the drug being tested
Which of the following conclusions is most likely to be CORRECT?
A. These results suggest that the drug affects RNA processing.
B. These results suggest that the drug digests DNA.
C. These results suggest that the drug inhibits DNA replication.
D. These results suggest that the drug contains a protease that targets this gene product.
E. These results suggest that the drug inhibits post-translational processing of this gene.
¿Qué condición se requiere para que se reproduzcan los virus?
Answer:
it must enter cells of the host organism and use those cells' materials.
Explanation:
A virus must take control of the host cell's replication mechanisms. At this stage a distinction between susceptibility and permissibility of a host cell is made.
How will a solution change if a base is added?
The hydroxide ion concentration will decrease and lower the pH.
The hydroxide ion concentration will decrease and raise the pH.
The hydrogen ion concentration will increase and lower the pH.
The hydroxide ion concentration will increase and raise the pH.
Answer:
As the concentration of hydrogen ions in a solution increase, the more acidic the solution becomes. As the level of hydroxide ions increases the more basic, or alkaline, the solution becomes. ... Thus, as the hydrogen ion concentration increases hydroxide ion concentration falls, and vice versa.
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PLEASE HELP ASAP ILL GIVE YOU BRAINLEST
explain what density is. How is it different from weight and mass?
Hey there! I'm happy to help!
Density is how much mass there is per amount of space. The formula for it is mass divided by the volume. How much mass is there per (per means divide) amount of space?
Think of it like a room in a house. If the room only has one person, it isn't going to be very dense with people because there is only one person in the entire room. If there were 100 people, it would be very crowded in that room and the whole room would weigh a lot more. If we make our room the size of a huge convention hall though, 100 people wouldn't make it very crowded,. and it would be less dense. So the amount of people (mass) and the size of the room (volume) affect density.
In that sense, density is kind of like how crowded a thing is.
A hollow watermelon has less density than one that isn't because a watermelon that isn't hollow has more substance inside of it (more mass).
Mass is a factor of density because it measures how much of something there is. It can be related to the people in the room.
Weight is mass but with gravitational influence. A watermelon in space is going to weigh less than a watermelon on Earth because in space there is no gravity and it is floating around, but it will still have the same density just like our room full of people would still be crowded even if the people weighed nothing and were floating around.
On Earth though, we measure mass with terms like pounds, kilograms, etc. We use the term mass over weight because it is more scientifically accurate when calculating density.
Have a wonderful day and keep on learning! :D
explain why are auxins added to the agar
Answer:
Auxins are added to the agar because Auxins control the growth of plants by promoting cell division and causing elongation in plant cells.
Hope it is helpful....3. The average pencil can be sharpened 17 times and write about 45,000 words. Which can
write longer, wooden #2 pencils or mechanical pencils (with one piece of lead)?
Please help :(
Which describes a difference between solar wind and a geomagnetic storm? Select the three correct answers.
Answer:
Hope it may help you.
Explanation:
The intensity of solar wether changes frequently
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A _ is a group of connected cells that have a similar
A
function.
Answer:
A TISSUE is a group of connected cells that have a similar function.
what is photosynthesis ??
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
The process of making food by plants through the help of sunlight is called photosynthesis
Describe the different types of corrections in a scatterplot
