Answer: Evolution is a process that results in changes in the genetic material of a population over time. ... Microevolution reflects changes in DNA sequences and allele frequencies within a species over time. These changes may be due to mutations, which can introduce new alleles into a population.
What kind of bacteria are able to change pure nitrogen into ammonia compounds?
A. denitrifying
B. nitrogen-fixing
C. decomposing
D. nitrifying
Answer:
B. nitrogen-fixing
Explanation:
Nitrogen fixing bacteria are able to change pure nitrogen into ammonia compounds.
Nitrogen fixing bacteria are found in the soil close to the root of leguminous plants. They are get their own nutrition by chemosynthesis.
They take nitrogen from the atmosphere in form of nitrogen gas. The nitrogen gas is converted into fixed nitrogen compounds such ammonia.Answer:
Nitrogen-fixing
Explanation:
I took the quiz
I need help with this question somebody answer!!
Answer:
The essential factor to increase the number of cells in a growing organism is that each and every cell has a complete copy of DNA.
Explanation:
The development and growth of an organism is based on the multiplication of its tissue cells. Cell multiplication in somatic cells occurs through mitosis, a process that allows obtaining two identical daughter cells from a progenitor cell.
DNA contains all the genetic information belonging to a living organism. In the process of mitosis, the DNA of each cell must be replicated so that each daughter cell has a complete copy of the original DNA. This ensures that each cell resulting from mitosis has the same structure and function as the original cell.
The other options are not correct because:
The size of the cell is important, since each cell has defined characteristics, according to the tissue it must form. Each and every cell needs to have a complete DNA. In somatic cells, DNA does not vary from one cell to another.Can y’all help me figure out the other ones or can y’all correct my work if I messed up because I’m stuck.
Answer:
5. ee, attatched earlobes
8. Ee, free earlobes
Explanation:
What “rule” or reasoning did you use to decide if something is a rock?
Answer: Anything that has an Origin, composition, and texture.
Explanation:
May be Minerals, feel rough or smooth, and can be hundreds or thousands of years old.
A rock is a naturally occurring compound which is made up of one or more minerals. They are found in the Earth's crust which undergoes transformation with the changing environmental conditions.
What qualities define a rock?
A rock can be defined as a solid mass of geological materials. The geological materials include individual mineral crystals, inorganic non-mineral solids such as glass, pieces broken from other types of rocks, and even the fossils.
The physical properties of rock include density, porosity, and permeability, etc. The mechanical properties of rock mainly include the elastic modulus, Poisson's ratio, and its strength. These parameters can be obtained through the laboratory experiments of core samples or by the in-situ tests.
A rock is a naturally occurring group or compound of one or more minerals that stays together. A rock is anything which has an origin, composition, and a texture.
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Which type of rock did the geologist most likely find? gneiss limestone marble sandstone
Answer:
Limestome
Explanation:
I took the test u welcome
Answer:
B
Explanation:
through which structure would the toxins first enter the plant?
Answer:
The Xylem.
Explanation:
particles of this type of material do not allow light to transmit or pass-through (see picture)
Answer:
I'm 99.9% sure the correct answer would be A. Opaque.
How are atoms and electromagnetism related?
Explanation:Electromagnetic radiation is made when an atom absorbs energy. The absorbed energy causes one or more electrons to change their locale within the atom. When the electron returns to its original position, an electromagnetic wave is produced. ... These electrons in these atoms are then in a high energy state.
Im not very sure about this
Answer:
CRISPR can also be used to make precise changes such as replacing faulty genes – true genome editing – but this is far more difficult. Customised Cas proteins have been created that do not cut DNA or alter it in any way, but merely turn genes on or off: CRISPRa and CRISPRi respectively.
Someone helpp me plsssssssssssssssss :(((
Answer:
Explanation:
This shows that in 2018 the number of nests increased while the number of eggs per nest increased at the minimum and decreased at the maximum when compared to 1780. We can see that by looking at the graph. The blue curve represents 2018 and the dotted 1780. The Y-axis represents the number of nests while the X-axis represents the number of eggs. The dotted one is shorter but wider and the blue one is taller.
can someone please help this is 6ht grade science
Answer: Container P.
Explanation: All of the containers started at 30 degrees, and they all lost heat, as shown in the table. However, Container P saw the smallest decrease in temperature. This means that Container P was most effective at preventing heat transfer from the water to the environment.
The fact that whales have a pelvis is which type of evolutionary evidence?
Answer:
Anatomical Evidence
Explanation:
The pelvic bones in whales are a good example of evolutionary anatomical evidence shown by vestigial evolution where whales evolved from four-legged land mammals and secondarily lost their hind legs.
What is the cell membrane?
A) the center of the cell
B) the boundary of the cell
C) the energy producer of the cell
D) the substance that fills up the cel
Answer:
B is the answer
Explanation:
The cell membrane is the boundary of the cell, separating the cell material from the outside environment, hence option B is correct.
What is the function of the cell membrane?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it maintains a constant environment inside the cell, and that membrane serves a variety of purposes. One is to move compounds out of the cell that is harmful as well as nutrients into the cell.
Therefore, the cell membrane is the boundary of the cell.
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Type a paragraph summarizing cellular division and differentiation
PLS HELP!!! PROJECT DUE IN 30 MINUTES!! OFFERING 20 POINTS!!!!!!
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.
Answer:
Cellular differentiation is when a cell changes from one cell type to another—usually, the cell changes to a more specialized class. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and average cell turnover.
Explanation:
IM A DIFFERENT BREEED!
What causes hydrogen bonding between water molecules?
Answer:
I believe it's the valence electrons.
Explanation:
Hope this helps!
A runner takes off at
the beginning of a
race.
Acceleration , speed , or , velocity
Answer:
acceleration
Explanation:
velocity doesn't make sense and speed is how fast not how fast you take off. hope this was helpful
( please, do not comment if you do not know the answer, I will give Brianlist ) Please complete the following:
1. You and Tim, who is larger than you are outside with a wagon. Tim (the bigger person) gets in the wagon and you (the smaller one) pull it. As you pull
it, you accelerate until you reach a comfortable velocity. Then you stop and switch places with Tim. Tim now pulls you in the wagon, accelerating
from a stop to a comfortable velocity. Now, Tim may be bigger than you, but you have been working out and are just as strong as Tim, so the force
that Tim uses to pull the wagon is the same force that you used. You both pull with the exact same amount of force. Who was riding in the wagon
when it had the greatest acceleration during start up? Why? Use Newton's second law to explain.
2. Now Sara comes along, and she is the exact same size as you. However, she is even stronger than you! When she pulls you in the wagon, she pulls
with a greater force than when you pull her. Now who is in the wagon when it has the greatest acceleration? Explain, using Newton's second law.
Answer:
2. Sarah
Explanation:
because she is stronger, she is able to pull faster and easier because of the amount of weight she can carry vs the amount of weight you can carry. Although you are the same height, she has more muscle.
Explain how the development and improvement of microscopes changed the study of living organisms.
Answer: As scientists started improving on the microscopes, the more they got to observe the cells in depth. Compound light microscope uses visible light to produce a magnified image and doesn't allow it to scatter.
A large photograph displayed on a store’s website would NOT qualify for fair use under which guideline?
Answer:
copyright
Explanation:
Shoot the Golgi Apparatus. Fill in the blanks: Golgi receives ANSWER containing ANSWER that were sent by the ANSWER Then it modifies ANSWER and send them where they need to go.
Answer:
Golgi receives a vesicle containing newly synthesized proteins that were sent by the endoplasmatic reticulum. Then it modifies the proteins and sends them where they need to go.
Explanation:
Protein synthesis is initiated in the cytoplasm when mRNA meets a free ribosome, which is the primary structure for protein synthesis. They read the mRNA code and add the correct amino acid using transference RNA to build the protein. The synthesizing protein is driven to the rough endoplasmic reticulum and translocated to the lumen. Once there, the protein suffers a few modifications, one of them is folding to become functional. Once membrane proteins are folded in the interior of the endoplasmic reticulum, they are packaged into vesicles and sent to the Golgi complex, where it occurs the final association of carbohydrates with proteins. The Golgi complex sends proteins to their different destinies. Proteins destined to a certain place are packaged all together in the same vesicle and sent to the target organ. In the case of membrane proteins, they are packaged in vesicles and sent to the cell membrane where they get incrusted.
is glucose completely broken down in anaerobic respiration (animal)
Answer:
Glucose is not completely broken down
Explanation:
So much less energy is released than during aerobic respiration. There is a build-up of lactic acid in the muscles during vigorous exercise.
During a diving expedition, a scuba diver suffered from a buildup of carbon dioxide in her bloodstream. Which two organ systems work together to try to prevent this buildup from happening?
A.
nervous and excretory
B.
cardiovascular and respiratory
C.
immune and muscular
D.
muscular and skeletal
Answer: B. Respiratory brings oxygen into the body and sends carbon dioxide out
Will Mark Brainiest. What are 6 physical properties of mountains and 2 chemical properties?
Answer:
Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.
Physical properties are those that can be observed without changing the identity of the substance. ... Properties that describe how a substance changes into a completely different substance are called chemical properties.
Explanation:
Flammability and corrosion/oxidation resistance are examples of chemical properties.
Energy conversion within an animal cell would be severely limited by removal of the cell's --
F .mitochondria
G .chloroplasts
H .plastids
J .lysosomes
Answer:
The answer is F.
Explanation:
The reason why is the Mitochondria converts glucose to energy. If it were to be removed, protein production would stop, normal functions would cease, homeostasis would be off balance. also because activities going towards the Nucleus. No control center, no protein production since ribosomes are made there. Thus, destroying that cell completely.
What does carbon becomes in the forest?
Answer:
photosynthesis i think
Explanation:
Describe the two processes necessary for sediments to lithify into sedimentary rock.
Answer:
Sedimentary Rock Formation
Two important steps are needed for sediments to lithify. Sediments are squeezed together by the weight of overlying sediments on top of them. ... Cemented, non-organic sediments become clastic rocks. If organic material is included, they are bioclastic rocks.
If you are working out and your oxygen supply is not meeting the demands of your cells, what process will your cells undergo?
Answer:
Fermentation
Explanation:
But when you sprint, your lungs and bloodstream can't supply oxygen fast enough to meet your muscles' need for ATP. In such situations, your muscle cells use another process, called fermentation, that makes ATP without using oxygen.
Explain the difference between symplastic and apoplastic pathways.
A student observes that a popcorn kernel has a hard coat. He places the kernel in a moist paper towel and observes it for several days. He notices that the coat splits and a small root emerges. He concludes that—
water outside the seed coat exerted a pushing force, breaking the seed coat
air inside the seed coat exerted a pushing force, breaking the seed.
water outside the seed coat exerted a pulling force, breaking the seed coat.
gravity exerted a pulling force on the stem, breaking the seed coat.
Answer:
d
Explanation:
got it right on the test
Definition of invasive species ?
Invasive species are plants, animals, or other living things that typically don't belong In that ecosystem- and their presence can cause harm to the other species within, or the environment.
Answer:
Invasive species are foreign species that are introduced to a new habitat and cause changes to the habitat.
Explanation:
Example is when the wolves were introduced to the yellowstonenational park again