Answer: They may be maintained by heterozygote advantage
For example, the allele that causes sickle cell anemia is deleterious if you carry two copies of it. But if you only carry one copy of it and live in a place where malaria is common, the allele is advantageous because it confers resistance to malaria.
Explanation:
Hope this helped
Which of the following is not a principle of natural selection?
Answer: The last one on the bottom i'm in biology
The statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others. So, the correct option is D.
What do you mean by Natural selection?Natural selection is the process through which populations of living organisms adapt and change their needs as per nature.
The given statement gives the idea of adaptation rather than natural selection. Natural selection gives the idea of competing for limited resources. Natural selection always leads to the most favorable types of variation that an individual possess.
Therefore, the statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others.
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8.
Dave was observing two types of cells mounted on two different microscopic slides 'A' and 'B'
under the microscope. When he had observed the slide 'A' he noticed a large vacant space in the
cells and a dense round body located at one side of the cell. When he had observed the slide 'B',
there was no vacant space in the cell and he noticed a dense round body in the centre of the cell.
a) Identify the type of cell 'A' and 'B'.
b) Name the round dense structure seen in the cell.
c) Write the function of the round dense structure that he observed in the cell.
ans this please
will mark brainliest .
Answer:
The correct answer is -
a) A plant cell B animal cell
b) nucleus
C) Vacuole
Explanation:
In plant cells, there is a large vacant space present in the center which is actually a vacuole that plays role in various types such as nutrients storage, water balance. In plant cells, a dense round structure present at one side of the cell known as the nucleus.
In animal cells, the vacuoles are absent or very small however the round dense structure of the nucleus is present in the center of the cell. Thus, the correct answer is -
a) A plant cell B animal cell
b) nucleus
C) Vacuole
Which statement describes the synapse?
A. It is the gap between neurons that ensures that information travels in multiple directions.
B. It is the gap between neurons that ensures that information travels in one direction only.
C. It is the part of the neuron that carries information through electrical impulses to the cell body.
D. It is the part of the neuron that carries information through chemical impulses to the cell body.
[tex]\pink{\bigstar}[/tex] [tex]\large\underline{\underline{\bf\green{Synapse:-}}}[/tex]
✯ Synapse is the gap between neurons that ensures that information travels in one direction only.
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Therefore, the 2nd statement [B] is correct.
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
[tex]\pink{\bigstar}[/tex] Additional Information:-A Synapse is a small gap at the end of a neuron that allows a signal to pass from one neuron to the next. Synapses are found where nerve cells connect with other nerve cells. Synapses are the key to the brain's function.
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
The term synapse was first introduced in 1897 by Michael Foster in his "Textbook of Physiology" and derived from the Greek synapsis, meaning "conjunction."
Answer: B) It is the gap between neurons that ensures that information travels in one direction only.
Explanation: this is the right answer ik cuz i just completed the quiz and got 100% thx to the person above!! Im just double confirming that this is the right answer.....hope this helps :D
Will mark brainliest and give thirteen points
the awnser is D
a neap tide is when the moon is either above or below earth
and a spring tide is when the moon is on the side/both sides middle of earth.
Hope this helps and isn't too confusing.
what is the complementary dna strand for AGC CAT GTA TAC
Another Organ System that depends on mine
Answer: Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs
Explanation:
<3
how quickly is cyclin destroyed?
Answer:
the answer is less than 5 minutes.
Explanation:
Hope this helped Mark BRAINLEST!!
Answer:
less than 5 minutes
Explanation:
The highlighted part please
what's one thing u wonder about ocean exploration
The diagram shows the life cycle of a fern,
What does stage 2 show?A. A gamete-producing fern plant is flat and shaped like a heart.
B. A zygote forms when a sperm fertilizes an egg cell.
C. A mature spore-producing fern plant has fronds and produces
spores
D. A spore grows into a mature gamete-producing plant,
Answer:
the correct answer is D!
A spore grows into a mature gamete-producing plant.
Explanation:
hope this helps :)
A spore grows into a mature gamete producing plant is best describe the life cycle of fern.
What is the life cycle of fern?The life cycle of the fern has two different stages such as sporophyte and gametophyte. The sporophyte stage which releases spores whereas gametophyte stage which releases gametes. Gametophyte plants are haploid whereas sporophyte plants diploid. This type of life cycle is known as alternation of generations.
So we can conclude that a spore grows into a mature gamete producing plant is best describe the life cycle of fern.
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what is mentruation? give example
Answer: a cyclical discharging of blood
Explanation:
How does biodiversity affect sustainability after a catastrophic event in a particular biome or habitat?
Answer:
i think biodiversity affects after catastrophic event in a particular biome or habitat by affecting wetlands, forests and coastal systems by causing the spread of invasive species, mass species mortality and loss of habitat.
Explanation:
DNA replication occurs during which phase of the eukaryotic cell cycle?
S phase
G1 phase
G2 phase
M phase
Answer: your awnser would be A
Explanation:
How many calories do I need to gain muscle i am 75 pounds and 4 foot 5
Answer:
is there a reon why u want to gain mucle
Explanation:
a _____ force is when two forces cancel each other out and do not affect the motion of an object
Answer:
Friction and gravity are at work in each picture. Explain how each are at work and how they work together. Balanced forces - Two or more opposite forces are balanced forces if their effects cancel each other and do not cause a change in an object's motion.
Explanation:
Balanced forces are equal and opposite forces that act on the same object. That's why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion.
In Korea, a company is making copies of dogs for their owners. These owners are able to pay $100,000 in order to have their dog again. This process is Called
A Genetic engineering (GMO)
B. Reproductive cloning
C. Stem cell transplants
D. Gene therapy
Answer:Reproductive Cloning
Why do you think mining on land would be less costly than mining in the ocean?
Explanation:
Because dense minerals are heavier and drop to the stream bottom, lighter minerals are carried along in the current of the stream. Why do you think that mining on land is less costly than mining in the deep ocean is? It is easier to get to land than the ocean and you need special equipment to go under water.
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Energy Changes in Chemical Reactions: Tutorial
Question
Draw the chemical reaction energy diagram for the synthesis of water. Then use the text box tool to write the names or
chemical formulas of the reactants and products on the diagram.
T
Line
Width: 2 pt
LIN
Lines
Shapes
Answer: Lowkey dont know
Explanation: Lowkey
ASAP! 30 POINTS!!! Write a persuasive paragraph that argues either for or against wind energy. Be sure to include both the pros and cons of wind energy in your paragraph. Use all data, evidence and examples that you are aware of in your paragraph.
Answer:
Disadvantages of wind energy
Unpredictable. Perhaps the biggest disadvantage to wind energy is that it cannot be produced consistently. ...
Threat to wildlife. Wind energy does not cause environmental problems through greenhouse gas emissions, however, turbines can have an impact on wildlife. ...
Noise. ...
Looks. ...
Location limitations.
Explanation:
ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ
Answer:
Wind energy is one of the most commonly used types of renewable energy. and also happens to be one of our fastest-growing sources of electricity. However, while there are a number of environmental benefits to using wind energy, there are some downsides. On the pros side, wind is a clean, renewable energy source, and is one of the most cost-effective sources for electricity. On the cons side, wind turbines can be noisy and unappealing aesthetically, and can sometimes adversely impact the physical environment around them. Similar to solar power, wind power is also intermittent, meaning that turbines are reliant on weather and therefore aren’t capable of generating electricity 24/7. Unlike coal, natural gas, or oil, generating electricity from wind doesn’t result in greenhouse gas emissions. While there are some environmental considerations that come with building large wind farms, once operational, wind turbines themselves don’t require burning any fossil fuels to operate.
Additionally, wind energy is completely renewable and will never run out. In opposition to traditional fossil fuels resources that replenish very slowly, wind naturally occurs in our atmosphere, and we don’t have to worry about supply issues in the future.
As far as upfront costs go, wind farms or individual turbines can be expensive to install. However, once up and running, operating costs are relatively low; their fuel (wind) is free, and the turbines don’t require too much maintenance over the course of their lifetime.
A wind turbine’s effectiveness in generating electricity depends on the weather; thus, it can be difficult to predict exactly how much electricity a wind turbine will generate over time. If wind speeds are too low on any given day, the turbine’s rotor won’t spin.
This means wind energy isn’t always available for dispatch in times of peak electricity demand. In order to use wind energy exclusively, wind turbines need to be paired with some sort of energy storage technology.
One of the biggest downsides of wind energy is the noise and visual pollution. Wind turbines can be noisy when operating, as a result of both the mechanical operation and the wind vortex that’s created when the blades are rotating. Additionally, because wind turbines need to be built up high enough to capture a good amount of wind, the turbines can often interrupt otherwise scenic landscapes, such as mountain ranges, lakes, oceans, and more.
Explanation:
In the periodic table, elements are classified as ____________ according to their properties and their specific location within the periodic table.
Answer:
metals
Explanation:
In the periodic table, elements are classified as metals, nonmetals, and metalloids according to their properties and their specific location within the periodic table.
What is Periodic table?The periodic table is also called the periodic table of the elements which is defined as the arrangement of rows and columns of the chemical elements widely used in chemistry, physics and other sciences and usually represented by chemical symbols.
The elements of the periodic table are classified into groups based on the chemical and reactive properties of the elements where the three major groups are metals, nonmetals and metalloids. The metals in the left and bottom parts of the table give up electrons in chemical bonds.
Thus, in the periodic table, elements are classified as metals, nonmetals, and metalloids according to their properties and their specific location within the periodic table.
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Explain what other steps need to be taken to demonstrate that each of these factors is needed for photosynthesis.
light
What type of muscle is found in the heart that has gap junctions to allow electrochemical signals to cause rapid contraction?
A. Rough muscle
B. Smooth muscle
C. Cardiac muscle
D. Skeletal muscle
why did the scientific use a two-dimensional model instead of of another type of model.
Answer:
Sometimes, a diagram or image isn't enough. We need to test some things out in three dimensions. There are two main types of three-dimensional models, or models that have length, depth, and breadth, structural models and model organisms.
Explanation:
hope this helps
If a nucleotide pair were removed from a gene, which of these would most likely be directly affected?
Answer:
every pair in the sequence after that pair would be affected, it might result in a mutation
Match the appropriate food item with the indicator chemical you would use to detect the principal organic molecule present in that item.
Note: some indicator chemicals may be used for more than one of these food items or not at all.
B. raspberry jam
A. benedict's solution
B. benedict's solution
E. V ground turkey
C. lodine
C. plain oatmeal
D. sudan IV
A honey
E. bluret reagent
Answer:
raspberry jam - benedict's solution
honey - benedict's solution
ground turkey - biuret reagent
oatmeal - iodine
Explanation:
Benedict's test is a test used to confirm simple carbohydrates. it helps in identifying reducing sugars that have free ketone or aldehyde functional groups. Raspberry jam has mainly carbohydrates that can be tested by this indicator.
An iodine test is for the determination of starch which is a non-reducing sugar such as oatmeal
Sudan IV (C24H20N4O) is used for the presence of staining of lipids, triglycerides and lipoproteins. There is no food item given that has a proper amount of fat or lipid
Beuret reagent is a protein testing reagent that shows the presence of the protein. Ground turkey has a huge amount of protein that can be indicated by this
Is Standing on a diving board a Kinetic energy or potential energy
Answer:
Explanation:
Potential Energy. This diver is standing at the end of the diving board, ready to dive. After he/she dives and is falling toward the water, they'll have kinetic energy, or the energy of moving matter. But even as they stand motionless high above the water, he/she has energy
Forensic scientist Bennet asks his technician for the scalar quantity of fingerprints found at his crime scene. What would be the technician's most likely answer?
There were 13 fingerprints found at the crime scene.
There were fingerprints in the hallway facing the direction of the kitchen and fingerprints in the kitchen pointing toward the door handle.
There were individual prints dusted at the crime scene, but they have not been identified yet.
There were fingerprints found in the bedroom, some that look like they are sliding down the hallway, and prints leading to the refrigerator.
Answer:
first answer is correct
Explanation:
just took the test
A break or crack, in Earth's surface along which movement occurs
A. Rock Cycle
B. Extinction
C. Ice Core
D. Fault
Answer:
fault
Explanation:
it is this because these can be massive or small then if tension builds up along a fault it is suddenly released and then it would result of a earth quake.
Human blood is 90% water and 10% solute. What would happen if you gave
a patient an IV of pure water (0% solute)? The patient's cells will
remain unchanged.
swell or lyse.
shrivel.
Answer:
When a person receives fluids intravenously (through an IV bag, for example), a saline solution is sometime used. Giving large amounts of pure water directly into a vein would cause your blood cells to become hypotonic, possibly leading to death.
Explanation:
The answer is B: It swells.
A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.
What is the relationship between the hypothesis and conclusion?
Answer:
They both relate the outcome of an experiment. A hypothesis is an guesstimate of the outcome of an experiment, while the conclusion is the actual outcome.
Explanation: