Answer:
B) genetic variation needed for a population to evolve
Explanation:
Mutations are important because they bring about the genetic variation needed for a population to evolve.
Mutation brings about changes in the DNA sequence of an organism. Most times, mutation results when an organism tries to adapt and evolve to unfavorable conditions. Mutation can originate from mistakes in DNA sequencing. It can also be due to environmental influences.Which statement describes one feature of a mineral's definite chemical composition?
It always occurs in pure form.
It always contains certain elements.
It cannot form from living or once-living materials.
It cannot contain atoms from more than one element.
ОО
Answer:
It always contains certain elements
Explanation:
Just took the test
Answer:
it always contains certain elements
Explanation:
Edge!
What is resource portioning
Answer:
Explanation:
Resource partitioning is the division of limited resources by species to help avoid competition in an ecological niche.
keeping your body temperature at an average of 98.6 °F is an example of what?
Answer:
Thermoregulation
Explanation:
The body can maintain its temperature within certain boundaries, even when the surrounding temperature is very different. Hope i was able to help
PLEASE HELP MEE GUYSSS
Answer:
Im pretty sure that It is A
Explanation:
Brainliest?
what are the 4 important parts of the nucleus
Answer:
The nucleus consists of the following main parts: (1) Nucleolemma or nuclear membrane (karyotheca) (2) Nuclear sap or karyolymph or nucleoplasm (3) Chromatin network or fibres (4) Nucleolus (5) Endosomes.
Explanation:
hope it help
Answer:
a. Nuclear membrane
b. Nuclear sap
c. Chromatic network
d. Nucleolus
HELP please!! i don’t understand this
My response to your question is inexplicably being blocked from posting, so I've attached it as a PDF file. Please let me know if you can't access it or if you have any other follow-up questions/comments. Hope this helps!
what’s the difference between red blood cells and animal cells
Answer:
the red blood cells get there color from heme, and animals blood cells lack nuclei and other internal structures.
Explanation:
hope this helps
What is the most important reason to control the conditions of an experiment?
O to make the experiment easier to repeat
O to reduce the amount of data that must be recorded
O because this is necessary for graphing the data
O because this is necessary for the data to be valid
Answer:
The answer would be the last choice, "because this is necessary for the data to be valid."
Explanation:
This is because in an experiment, things must be controlled or monitored in most ways; otherwise, the result of the experiment will be different from what it was meant to be. An experiment should be as exact as possible. If this is not possible, results may be unreliable.
If a cell displays a great amount of activity, one possible reason for this could be that it has large quantities of
Answer:
mitochondria
Explanation:
In cells where there is a high energy demand large numbers of mitochondria are found. The tail of a sperm contains many mitochondria and they run in a spiral like form along the length of the tail. In heart muscle cells about 40% of the cytoplasmic space is taken up by mitochondria.
HELP ASAP
The word _____ is defined as the point at which an astronomical object is at its closest point to the object it rotates around.
A.equinox
B.solstice
C.perihelion
D.aphelion
E.tide
Answer:
Equinox.
Explanation:
Is when it is the closest.
Answer:
Answer is C
Explanation:
The oxygen pulls harder on the shared electrons than hydrogen. The result of this is that the hydrogen have a __________?
None of the above
Partial negative charge
Partial positive charge
Answer:
b
Explanation:
Partial negative charge
is trypsin coagulates
the milk protein
Answer:
Trypsin coagulates the milk protein casein.
Scientists use many different methods of investigation. When possible, scientists want to actually experiment or observe an event. Which method is useful when developing a
scientific reasoning for an event that cannot be studied directly?
Conduct a field survey of bird populations in an area
Observe the effect of various fertilizers on corn crop yields
Use a computer model to study how the ocean liner Titanic sank
Use a wind tunnel to measure air drag on various types or automobiles
Answer:
Observe the effect of various fertilizers on corn crop yields
Explanation:
I think I'm right
Answer:
Observe the effect of various fertilizers on corn crop yields
Explanation:
I will give you brainliest if you answer this question.
The Mid-Atlantic Rift was formed from a hot spot volcano.
Q: True or false?
Answer:
False
Explanation:
Iceland was formed from volcanic eruptions on the Mid-Atlantic ridge. ... the hot spot that is under Iceland, makes the country highly active in volcanic activities.
Answer:
hi how are you
Explanation:
hi what's up
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It is in the picture attached
what do you think is the active ingredient in lactaid
Answer:lactose
Explanation:
because i’m right
is perpendicular to line segment hy if the length of EF is a units, then the length is units?
Answer:
AB is perpendicular to [GH] and GH is [A]
Explanation:
Which of the following statements about models is true? help me
18. The structural diagram demonstrates two joined amino acids.
Which arrow points to the peptide bond?
A.3
B.1
C.4
D.2
Answer:D
Explanation:
The structural diagram demonstrates two joined amino acids, and the arrow points 2 to the peptide bond, which is in option D, as a peptide bond is a type of covalent chemical bond that is formed between two amino acids when the carboxyl group of one amino acid reacts with the amino group of the other amino acid.
What is a peptide bond?The resulting bond that is formed between the two amino acids is called a peptide bond, and the resulting molecule is called a dipeptide. As more amino acids are added to the chain, a polypeptide is formed. The peptide bond is a strong covalent bond that holds the amino acids together in the polypeptide chain. It is important for determining the structure and function of proteins.
Hence, the structural diagram demonstrates two joined amino acids, and the arrow points 2 to the peptide bond, which is in option D, as a peptide bond is a type of covalent chemical bond that is formed between two amino acids when the carboxyl group of one amino acid reacts with the amino group of the other amino acid.
Learn more about the peptide bond here.
https://brainly.com/question/28295128
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Is saying “the chicken is going to lay an egg” a prediction, inference, or an observation?
Answer:
it is a prediction
Explanation:
you would be predicting that the chicken is going to lay an egg.
what is a non example of chloroplast?
Answer:
"Mitochondria" is the non-example of the chloroplast.
Explanation:
Hope this Helps!
Answer:
the awnser to your question is Mitochondria
Which particles are NOT included in determining the mass of an atom?
Neutrons
Nucleus
Protons
Electrons
Answer:
Electrons
Explanation:
The neutrons and protons are found in the nucleus of an atom to find the atomic mass.
How are geotropism and phototropism similar _____.
They both affect plants.
They are both controlled by auxins.
They both can be negative or positive.
All of the above
All of the above is the answer
Answer:
the answer is all of the above! :)
Please help meeee!!!
Study the dashed arrows in the image.
What causes the arrows to move in this direction?
Earth rotating
air moving to the poles
Earth’s equator
wind moving over short distances
Answer:
Earth rotating (option A)
Explanation:
i got 100% on my quiz for EDGE
Which statement provides a conclusion about the transport of water in and out of cells based on the results of the student's experiment? A. Water moves freely both inside and outside the cell independent of the solute concentration. B. Water movement into the cell is dependent on the percent concentration of solutes both inside and outside the cell. C. Water transports solutes out of the cell to balance the percent concentration of solutes both inside and outside the cell. D. Water moves into the cell solutes move out of the cell to ensure their concentration is balanced both inside and outside the cell.
Answer:
B.
Explanation:
The transport of water in and out of cells based on the percent concentration of solutes both inside and outside the cell.
The movement of water in and out of the cell is called osmosis. In the process of osmosis, water or solvent moves from low to high concentration of solute (towards high solute concentration). For example, if a cell is placed in a salt (solute) solution, the water will move out of the cell or towards high salt concentration and the cell will get shrink.
Hence, the correct answer is "B."
How does altitude affect climate patterns in a region? Areas at high elevations have cooler temperatures. Air continues to warm as it rises to a higher elevation. Tropical regions do not have many differences in altitude. High-altitude areas have less variation in seasonal temperatures.
Answer:
A. Areas at high elevations have cooler temperatures.
Explanation:
Areas with high altitude or elevations have cooler temperatures because air molecules are less in the air at high elevation that decreases the gas pressure leading to low temperature.
Earth's surface absorbs heat and diffuses it into the atmosphere that warms up the earth's surface. Layers of the atmosphere in higher-altitude areas diffuses less heat and maintain the low temperature.
Hence, the correct option is "A. Areas at high elevations have cooler temperatures."
Answer:
a
Explanation:
How is energy transferred from one organism to another ? A. by one side draining the energy of the other organism B. by one organism eating another organism C. by one organism giving the other one energy D. by one organism attacking the other organism
A major disturbance that almost caused a total collapse, but that the ecosystem was able to recover from eventually?
Answer:
corona
Explanation:
2020 bad
39
5 points
9. A family is looking to see how much of their electricity bill is coming from their clothes washer and drier. The washer uses 1500 watts and the clothes drier uses
2000 watts and the family pays $.10 per kilowatt-hour. The appliances runs approximately 30 minutes each day(total together). How much does the family spend
per week to run both these appliances? Show set up with units
Answer:
Per week expenses = $73.5
Explanation:
Given:
Washer uses = 1500 watts
Drier uses = 2000 watts
Kilowatt-hour = $0.10
Find:
Per week expenses
Computation:
Total uses = 1500 + 2000
Total uses = 3500
Week uses = 3500(30)(7)
Week uses = 735000
Per week expenses = (735000)(0.10)/(1000)
Per week expenses = $73.5
Which of the following best represents a function of a lipid within an organism? O Lipids are components of cell membranes All the answer choices are correct O Lipids are parts of proteins O Lipids form a large part of the helical DNA structure
Answer:
The statement that best represents a function of lipids within an organism is that they are components of cell membranes.
Explanation:
Lipids are biomolecules formed by the binding of fatty acids, important for structure, compound synthesis and energy reserve.
In living beings, one of the most important functions of lipids is to be the main component of cell membranes.
Specifically, phospholipids associate to form a double layer, called lipid bilayer, capable of acting as a semi-permeable membrane, due to its non-polar or hydrophobic character. In this way, membrane lipids fulfill a structural and protective function of the cell and its contents.
Regarding the other options:
Proteins are made up of amino acids, not lipids. Lipids are not constituents of the DNA structure.