Which part of a phospholipid is hydrophilic
Answer:
nonpolar fatty acid tails
The hydrophobic, or “water-fearing,” part of a phospholipid consists of its long, nonpolar fatty acid tails. The fatty acid tails can easily interact with other nonpolar molecules, but they interact poorly with water.
Answer:
The head
Explanation:
You know how phospholipids always look like they're facing outward? Well, it's because they have hydrophilic (water-loving) heads and hydrophobic (water-fearing) tails. The tails are on the inside of the phospholipid bilayer because they are hydrophobic. The heads, on the other hand, are hydrophilic, meaning that they face the outside of the phospholipid bilayer, towards the water.
URGENT PLS HELP MEEEE --- How are the Atomic number, Mass number, and Atomic mass diffrent from eachother?
Answer:
Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. The mass number is a count of the total number of protons and neutrons in an atom's nucleus.
Explanation:
Homeostasis in the human body is often maintained by a: A. Positive feedback loop B. Negative feedback loop C. Neutral feedback loop
Answer:
B. Negative feedback loop
Explanation:
A negative feedback loop is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often, it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis, as in biology, or equilibrium, as in mechanics.
Homeostasis in the human body is often maintained by a Negative feedback loop. So, the correct option is B.
What is Homeostasis?Homeostasis is defined as a state of stable internal, physical, and chemical conditions maintained by living systems that are optimal functioning conditions for the organism and includes many variables like as body temperature and fluid balance, some being kept within pre-determined limits.
Homeostasis is usually maintained by a negative feedback loop involving the stimulus, the sensor, the control center, and the effector. Negative feedback serves to reduce an excessive response and keep a variable within the normal range where it regulates body temperature and blood sugar levels.
Thus, Homeostasis in the human body is often maintained by a Negative feedback loop. So, the correct option is B.
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I'm so confused help!!! (Will give brainliest)
A population is composed of bacteria that are very sensitive to light. They live in a lake that is in a cave so they flourish. Slowly, however, a hole begins to erode in the cave's roof. As the days pass, light begins to fliter in and the cave starts to be dimly lit. The bacteria begin to die. While the erosion is taking place, however two individual bacteria in the soil above ground fall into the lake. These bacteria cannot survive in the dimness of the poorly-lit cave, so they die immediately. Days later, the hole has opened up so that light floods the cavern. Nevertheless, the bacteria that were once dying are flourishing, with a population larger than they had before the erosion. Explain how this could have happend. There are 2 successive things that must have happened to cause this. What were they.
Answer:
The bacterium participated in transformation Im not sure tbh but maybe it'll help?
What is the largest flower in the world?
Answer:
Rafflesia arnoldii
Explanation:
The flower with the world's largest bloom is the Rafflesia arnoldii. This rare flower is found in the rainforests of Indonesia. It can grow to be 3 feet across and weigh up to 15 pounds! It is a parasitic plant, with no visible leaves, roots, or stem.
which type of measure can change because it is affected by gravity
Answer:
Im need to know also
Explanation:
Which statement most accurately describes bacterial cells?
The statement most accurately describes bacterial cells is bacterial cells have DNA, but they do not have a nucleus. The correct option is D.
What is a bacterial cell?Bacterial cells are prokaryotic cells and the most primitive cells. They are most simpler cells, and contain no true cell organs and a nucleus. The cell is covered with a cell membrane and a tail-like structure called flagella is present.
The bacteria are microorganisms, so they are very tiny. They are single-celled and DNA is present in these organisms but in a circular form coiled inside the cell.
Thus, the correct option is D. bacterial cells have DNA, but they do not have a nucleus.
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A farmer made a pesticide (a chemical that keeps insects away) from the leaves of the plant and sprayed it on his crops. The first year it is extremely effective and the farm loses only 1% of its crop to insects. Make a prediction as to the effectiveness of the pesticide in 5 years, be sure to give evidence to support your claim.
Answer:
See the answer below
Explanation:
In 5 years, the effectiveness of the pesticide would have reduced because the forces of natural selection would continue to act on the population of the insects and ensures that only those that are fit survive and contribute more to the subsequent generations.
Each year the pesticide is administered, those that are not able to adapt to its effects die off, leaving those that posses the pesticide-resistant genes to survive, reproduce, and give birth to offspring that would have inherited the survival gene and become resistant to the pesticide themselves.
Hence, in 5 years, more of the population of the insect would survive the effects of the pesticide leading to a reduction in its effectiveness. The population of the insect is said to have evolved by natural slection according to Darwin.
Which part of the compound light microscope is used to change magnification?
Part A
Part C
Part E
Part F
Answer: Part C
That’s correct because it contains the lenses magnification.
Answer:
C
Explanation:
why would some people consider genetic engineering of cisgenic crops more natural than genetic engineering of transgenic crops
Its the stoopid for mee
Answer:
Public perception has proven to be essential for the approval of genetically modified crops, in particular in Europe. Several surveys and focus group interviews in the United States and Europe clearly show that both intragenic and cisgenic crops are acceptable to a greater number of people than transgenic crops. Some people believe that cisgenesis should not face as much regulatory oversight as genetic modification created through transgenesis as it is possible, if not practical, to transfer alleles among closely related species even by traditional crossing. So, there is a need to use genetic techniques to improve crops over recent decades. Through the use of transgenics, one can produce plants with desired traits and even increased yields. The transgenics would allow for more crops that last longer and withstand pests and diseases.
Hope this helped you!
Explanation:
Society expects scientists to follow ethical practices and meet many ethical standards. Which is an example of one of these ethical standards?
A. Investigate only the events that affect people's lives or livelihoods.
B. Analyze data that was truly observed, and not data that was expected or desired.
C. Publish experimental results only if they agree with current theories or public opinion.
D. Continue the procedure of an experiment or investigation under all circumstances.
Answer:
B. Analyze data that was truly observed, and not data that was expected or desired.
Explanation:
In the scientific method, scientists or researchers are expected to make fair assessments and analysis of data. This prevents, what we call bias. When making conclusions, scientists need to analyze the data as they are and what was observed even if it does not agree or come out the way they expected it. If one will manipulate the results just to justify their own reasoning, the results cannot be regarded as facts.
Analyze data that was truly observed, and not data that was expected or desired, examples under ethical standards. Thus option B is correct.
What is scientific method ?scientific method is a structured form of study where a group of facts can be explained by using scientific hypothesis and laws.
Every scientific theory determined on the basis of scientific method, where scientist make an observation and formulate a hypothesis.
After this design an experiment and conduct the experiment to test that hypothesis.
If the result of hypothesis is incorrect, then new hypothesis will be developed and begin the the experiment again.
If the result of hypothesis is correct and supported by the results of the experiment, test again to get the accuracy of the result.
In scientific method, scientists make fair assessments and analysis of data and it prevents bias.
Thus option B is correct.
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do water molecules tend to push away from each other
Answer:
no the molecules tend not to push away from each other
Answer: No/False
Explanation: Water molecules stick together because of cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be less or more cohesive. Hydrogen bonds cause water to be more attracted to each other, therefore making them stick together.
An increase in the greenhouse effect, increases the production of what gas?
The green house effect is a natural process that warms the Earth surface.
((Carbon dioxide))
Help me out please:)
Answer:
Hypothesis: If fish eat food exposed to a microwave, then they will be smarter and be able to swim through a maze faster.
The fish eating normal food are the control group.
The independent variable is what kind of food they eat.
The dependent variable is how fast the fish finish the maze.
Which area of Earth Science includes the study of ancient organisms?
Answer:
paleontology
hope helps u
have a nice day
If a hypothesis is supported by several experiments, it may become a(n)_____. A) law B) theory C) fact D) educated guess
Which of the following is a way that new DNA can be introduced to bacteria?
A. It can be absorbed.
B. It can be injected by a virus.
C. It can be injected with a needle.
D. It can be injected into a food source and eaten by the bacteria.
Answer:2
Explanation:d
Explanation:
a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.
Imagine you have an objective lens that magnifies 100 times your image. If your eye piece magnification is 10x. How much will the total magnification be..? Explain your answer.
Answer:
1000x
Explanation:
Magnification is process of enlarging the appearance of an object (that is making the object look bigger than it is). The magnification of an object is usually described using a number.
The total magnification is the product of the objective lens power and the eyepiece magnification.
Total magnification = objective lens power × eyepiece magnification
Total magnification = 100x × 10x = 1000x
Bacterial flagella have a biological motor that spins within the cell wall and is powered by ATP. This allows the flagella to spin in a whiplike motion to propel the bacterium. Is this statement True or False?
Answer:
False
Explanation:
Bacterial flagella have a biological motor that spins within the cell wall and is NOT powered by ATP.
Instead the Bacterial flagella is known as the biological motor that spins the flagella for the motion of the bacteria and is as a result of the electron imbalance in the membranes which helps in the generation of a gradient. The cells makes use of the energy present in the gradient through the help of proton motive force which helps to propel it.
Neurotransmitter release is an example of(1 point) cyclical behavior. autocrine signaling. paracrine signaling. cellular miscommunication.
Answer:
Neurotransmitter release is an example of paracrine signaling.
It is the release of chemical ligands called neurotransmitters by the presynaptic cell (the cell emitting the signal).
Hope it helps.
An example of ( Neurotransmitter release ) is ; Paracrine signalling ( C )
Neurotransmitter release is stimulated by the presence of nerve impulse arriving in the presynaptic terminal of the nervous system. the released neurotransmitter finds its way into the synaptic gap before binding receptors present at the postsynaptic terminal ( membrane ).
while the release of the neurotransmitter occurs at the active zones of the presynaptic terminal.An example of the these releases includes the paracrine signalling , Dopamine, Glutamate.
Hence we can conclude that an example of Neurotransmitter release is Paracrine signalling.
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How would you design an investigation according to the scientific method?
Answer:
1Identify a research question or problem.
2Form a hypothesis.
3Gather evidence, or data, to test the hypothesis.
4Analyze the evidence.
5Decide whether the evidence supports the hypothesis.
6Draw conclusions.
7Communicate the results.
Suzie Q wants to know how different colors of light effect the growth of plants. She
believes that plants can survive the best in white light. She buys 5 ferns of the same
species, which are all approximately the same age and height. She places one in
white light, one in blue light, one in green light, one in red light and one in the
closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a
day for 2 weeks. After the two weeks, Suzie observes the plants and measurements.
4. What measurements could Suzy make to determine how different colors of light
affect the growth of plants?
Answer:
Suzie can measure the HEIGHTS of the plants in metres (m) or centimeters (cm)
Explanation:
According to this question, Suzie Q wants to know how different colors of light effect the growth of plants. She sets up the experiment by exposing 5 ferns of the same species to different colors of light (white, blue, green, red).
After ensuring that some variables called constants like same 20 mL of water, same fertilizer (miracle-grow) etc are the same for all ferns, She then measures the growth of each fern placed under different colors of light.
The independent variable in this experiment is the different colors of light while the dependent variable is the growth of the plants. This question is asking for how Suzie could measure the dependent variable (growth). Suzie can measure the growth of the ferns placed under different colors of light by RECORDING THE HEIGHTS OF EACH FERN IN cm or m.
Scientists group materials together ________ it is easier to compare and study them that way
The provided question is incomplete, the correct and complete question is as follows:
Choose the answer that best completes the sentence below.
Scientists group materials together ____________ it is easier to compare and study them that way.
A however
B but
C although
D because
Answer:
The correct answer is - option D because.
Explanation:
Researcher and scientists tries to group material together on their similarities and difference to one another which makes it easier to study and compare various type of materials.
It is the one of major reasons to differentiate materials between groups like liquids state, gases state, plasma state and solid state materials. One can easily see the difference and comparison is very clear on this type of grouping of materials.
Thus, the correct answer is - option D.
How many cells make up single gelled organisms?
Answer:
1 cell
Explanation:
Hence the name, single celled organisms, or unicellular organisms, (the prefix uni means one), single celled organisms only have one cell.
This single cell sustains life for the organism and carries out all the necessary processes.
Usually, these types of organisms are extremely tiny and can't be seen without a microscope. For example, bacteria and amoebas are single celled organisms.
1. Is a virus a living organism? Why? 2. Why are antibiotics not good for virus infections? 3. What is the difference between an organ and an organ system? 4. What happens to the other organ systems if one organ system fail? How does this affect homeostasis? 5. What is one body system humans have? What is one body system humans DO NOT have?
1. Is a virus a living organism? Why?
viruses are not living things because on their own they can do nothing until they enter a living cell. Also without cells, viruses cannot multiply
2. Why are antibiotics not good for virus infections?
antibiotics are useless against viruses cause viruses are so simple they use their host cells to perform their activities for them
3. What is the difference between an organ and an organ system?
organs are structures made up of two or more tissues
organ systems are systems composed of two or more organs
4. What happens to the other organ systems if one organ system fail? How does this affect homeostasis?
it will affect other organ systems cause all organ systems work together to function properly
if one organ system fails, it will affect other organ systems
5. What is one body system humans have? What is one body system humans DO NOT have?
one body system humans have is digestive system
i dont really know a system humans dont have
sorry :((
I hope this helped ! :)
can someone help me with this question
Answer:
The answer is B
Explanation:
If you can not find the correct answer then goolge it
Which phase occurs directly after G1?
A. S phase
B. M phase
C. Cytokinesis
D. G2
Answer:
S phase
Explanation:
When the cell has reached an appropriate size and is in a supportive environment for DNA replication,it will enter the next phase called S phase. S phase,
Answer:
S phase
Explanation:
In what form is carbon found in the atmosphere?
Answer: Carbon Dioxide
Explanation:
which one is used to store grains on large scale
Answer:
Silos is used to store grain in large quantities
The diagram shows that the upwind side of a mountain range tends to receive more precipitation than the downwind side of a mountain range. The prevailing winds are shown as an arrow that moves across the ocean, up the side of a mountain range, and down the other side of the mountain range. The upwind side of the mountain has vegetation and rain clouds. The downside is drier. Which statement is MOST USEFUL for explaining this observation? A. Prevailing winds flow from west to east. B. Water vapor condenses to form droplets of liquid water. C. Evaporation allows water vapor to rise through the air. D. Cold air holds less moisture than warm air.
Answer:
D: cold air holds less moisture than warm air
Explanation: