Answer:
i think it is the cells
Explanation:
If all of your cells have the same DNA, how is it possible for one of your stem cells to become a skin cell and another of your stem cells to become a bone cell?
Answer:
Different parts of the DNA are activated or used.
Explanation:
Different parts of the DNA can be turned "off" or "on" based on the needs to create the certain cell.
MARKING BRAINLEST 50 POINTS!!
Ecology Scavenger Hunt
4 things that are BIOTIC:
1.
2.
3.
4.
· 3 things that are ABIOTIC:
1.
2.
3.
· 1 population (a group of the same species):
1. .
· 2 producers:
1.
2.
· 2 consumers:
1.
2.
· 1 decomposer:
· Give a possible food chain that could be found in the area you are observing.
· List predators that probably live in this area.
· In which biome do you live?
· Describe the climate of the biome.
Answer:
things on Ecology Scavenger Hunt
1. MC
2.Graw
3.Hill
Which of the following is the correct order of events in a homeostasis
response?"
A)Stimulus --> Control Center --> Receptor
B)Receptor --> Stimulus --> Control Center
C)Control Center --> Stimulus --> Response
D)Stimulus --> Receptor --> Control Center
Answer:
A
Explanation:
What happens to the energy that is stored in cells
Answer: it is released slowly, and is released in a series of reactions. It is also used by cells for repair and growth.
Answer:
What they said
Explanation:
I just checked and they were right
NEED HELP WITH CELL BIOLOGY (pics)
Please give a correct answer WITH an explanation
If you didn't provide a reason (or give reason off the internet) & guess, I will be reporting
Answer:
A ribozyme is an RNA catalyst.
Explanation:
Ribozymes correspond to RNA molecules with enzymatic activity, mainly catalytic. These enzymes are specific and have limited activity, unlike protein enzymes.
The action of ribozymes is to promote the hydrolysis reaction of the phosphodiester bonds of a nucleic acid, specifically RNA. These enzymes are currently very useful in molecular biology, due to their potential to manipulate RNA.
Regarding other options:
RNA poymerase allows the construction of RNA chains, during transcription.Protein enzyme are the majority of enzymes involved in organic reactions, of a protein nature.Membrane protein are those that are integrated into the plasma membranes.which would stop electricity from flowing a) arubber band
b) light
c) copper wire
d) a paper clip
The movement of homologous chromosomes toward each other is known as____
( will mark brainliest)
a. Synapsis
b. Crossing over
c. Cleavage
d. Tetrad
does the diaphragm relax after we breath out or before we breath out?
what does it mean when breathing is active or passive phase?
Answer:
is it in correspondence to smoking
Which of the following is true about biotechnology?
It includes the use of recombinant plasmids
It includes beer and breadmaking.
It includes using microorganisms to make the dyes for blue jeans
22. Explain how emission or absorption spectrum can be used to identify the composition of objects in space
Answer:
Identifying elements in astronomical objects using their spectra. Measuring the spectrum of light from a star can tell astronomers what the star is made up of. Since each element emits or absorbs light only at a particular wavelength astronomers can identify what element are in the stars from the lines in their spectra.
If there Is a new moon on July 8th, what is the date of the following full moon?
Answer:
august 6th or 7th
Explanation:
full moons occur every 29.53 days
Answer:
WUT COLOR IS PEE MY PEE IS BLUE BC IM A SMERF
Explanation:
The cost of environmental regulations is often passed on to the consumer or taxpayer. True or False
Answer:
false
Explanation:
it is the goverment's job not consumer of taxpayer
A ball is dropped from the top of a building. The gravitational force is 10 N down, and the force of air resistance is 1 N up. What is the net force?
9 Nup
9 N down
11 Nup
11 N down
Answer:
9N down
Explanation:
The net force on the ball dropped has a magnitude of 9N and it is directed downward.
Given;
Gravitational force = 10N down
Air resistance = 1N up
Air resistance is an opposite force that acts against a body passing through air. It is a negative force.
Gravitational force is a force acting on a body due to gravitational attraction of the earth.
Net force = Gravitational force down - Air resistance up
= 10N - 1 N
= 9N down
The net force is 9N downward.
Over 1,800 mutations have been described within the CFTR gene. These mutations can be readily detected using PCR and DNA sequencing technologies. Prenatal genetic testing is available to identify 'carriers', and thus detect the risk of CFTR-related disorders. If a pregnant mother was tested and tested negative for any known disease-causing CFTR mutations, can it be assumed that the child born will be wild-type with respect to the CFTR phenotype? Explain.
a. No. If the father is a carrier and passes along a mutant allele to the child, the child will develop cystic fibrosis.
b. It depends on the genotype of the father.
c. Yes. Since this is a recessive disorder, even if the father is a carrier, the mother will contribute a wt allele, ensuring the child is wt.
Answer:
The correct answer is - option C.
Explanation:
CFTR is a short form of cystic fibrosis transmembrane conductance regulator protein which is caused by a recessive mutation in this protein. This mutation results in the accumulation of mucus in secretory organs.
As the disease is a recessive disease, for the mutant phenotype to expressed both copies of the allele required to be recessive.
The mother is negative for the CFTR. Hence, she will not transfer the mutant allele to her child So, the child would have a wild-type phenotype even if the father having two copies of recessive allele.
Thus, the correct answer is - option C.
Predict what would happen to typical animal cells placed in 0.0M and 1.0M sucrose solutions, and explain your prediction. The animal cells molar concentration is 2.0M.
Answer:
The animal cell will take in water until it eventually swells or burst
Explanation:
Osmosis is an important phenomenon that drives the movement of water across membranes. It is defined as the movement of water molecules from a region of high water concentration/low solute concentration to a region of low water concentration/high solute concentration across a semi-permeable membrane.
In this case, the animal cell with a molar concentration of 2.0M is placed in 0.0M and 1.0M sucrose solutions. This means that the cell is placed in an hypotonic solution (solution with low solute concentration), hence, water will move from the extracellular solution into the animal cell since the solute concentration in the cell is more. The animal cell will begin to swell and eventually burst.
In hypotonic solutions, the concentration of solute is lower than the concentration inside the cell. If a cell (2M) is placed in two solutions (0M and 1M), water will move toward the cell interior, swelling it.
---------------------------------------
When talking about solutions, we can classify them as follows,
Hypertonic ⇒ A solution has a higher concentration of solute than the cell. This means that in the cell interior, the solute concentration is lower than in the solution itself.Isotonic ⇒ The concentration of solute turns to be the same inside the cell and outside.
Hypotonic ⇒ The concentration of solute in the solution is lower than the concentration inside the cell. The solute is more diluted in the solution than in the cell.
Water is considered to be a hypotonic solution.
When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.
Osmosis occurs when two dilutions of different concentrations -in this example, the interior of the cell and the solution- are separated by a semipermeable membrane.
The membrane allows the pass of water but not solute.
Hence, water can move from the most diluted side to the less diluted one.
Water tends to go from the hypotonic solution to the cell interior and keeps doing so until concentrations are equal in the cell interior and exterior.
As water enters the cell, the cell begins to enlarge and becomes bigger-sized.
Because isolated cells can not limit the amount of water moving in, it keeps swelling until the membrane can not stretch anymore, and lysis occurs. It bursts.
Under natural conditions, the body regulates the extracellular fluids to avoid cells swelling until they burst.
What we need to consider is
When a cell with a semipermeable membrane is placed in a hypotonic solution, water enters the cell. When a cell with a semipermeable membrane is placed in an isotonic solution, there is no water movement. When a cell with a semipermeable membrane is placed in a hypertonic solution, water gets out of the cell.In simple words, in the proposed experiment, sucrose can not cross the membrane, but water can. So,
To solve this problem, we know that
The molar concentration in the interior of this animal cell is 2.0M.There are two cucrose solutions ⇒ 0M and 1.0 MIn both cases, the concentration in the interior of the cell is higher than the concentration in the solution.
In both cases the cell is in a hypotonic solution, meaning that water will get into the cell.
Water will move into the cell from the solutionBoth cells will swell as water moves in. The cell placed in a solution 1 M will reach equilibrium before the cell placed in a solution 0 M.---------------------------------------------------------
Related link: https://brainly.com/question/122954?referrer=searchResults
What is cell membrane?
Answer: google
Explanation:
Answer:
The cell membrane is a semipermeable membrane that surrounds a cell and encloses its contents. The cell membrane separates the cell from the surrounding interstitial fluid the main component of the extracellular fluid.
The structure of a cell is most closely related to which of the following
A. The size of the cell
B. the function of the cell
C. The number of mitochondria in the cell
D. Whether the cell is living or not
Cells assume different structures primarily on the basis of the function with which they are associated. Thus, the correct option is B.
The number of mitochondria or the size of the cell do not have any influence on the structure of the cell.
On the basis of the function, there are different features that are added or modified in the cell.
For instance, the cells in the intestine are primarily involved in absorption and hence, they have a special structure called villi on their apical surface for maximal absorption.
Similarly, RBCs have a disc shape for maximum surface area for fulfilling its function of oxygen absorption and diffusion.
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Which microscope did Robert Hooke use to study tree bark?
Mr. Hooke used a compound microscope if I remember correctly. Also my ear is really itchy hold on a sec--
why can't we see the trees and cities from outer space?
Explanation:
It's the same thing as saying, why can't I see a atom with my bare eye???
The trees and cities are just WAY too small and far away for us to see if we were in outer space.
Answer:
because it's too far away. you can however see some large structures like the great wall of China from space
PLS HELP WORTH 20 POINTS I WILL MARK U BRAINLIEST HELP ME PLEASE ANYTHING !!!!
(compare the rates of cell division in the patient sample and the normal sample)
Answer:
The graph is plotted between patient sample and the normal cell number. This graph depicts that initially the number of cells increases but the patient sample does not changes with respect to it, after the normal cell number reached to 30 the graph represented straight line that means the patient sample increased proportionally with respect to normal cell number Straight line graphs depicts the constant increase of both value on X as well as Y axis.how is it possible that four haploid cells are produced from one diploid cell?
Answer:
C. Meiosis I and II results in two cell divisions.
which organism is the primary consumer in this food chain
A. Eagle
B. Squirrel
C. Oaktree
D. Owl
Answer:
c. Oaktree
Explanation:
Which structure in a plant is at the same level of organization as a heart in an animal?
A shoot system
B leaf
C chloroplast
D dermal tissue
Answer:
A. shoot system
Explanation:
What is caused by uneven heating and cooling at the Earth’s surface?
Answer:
Wind
Explanation:
Which statements describe the impact of the use of fertilizers? Select two options.
It improves the growth of crops.
It provides more food for fish.
It causes erosion and washes away soil.
It causes the death of crops.
It harms organisms that live in the oceans.
Answer:
it improves the growth
Explanation:
cause every fertilizer has artificial nutrients that are tested before use
The statements which describe the impact of the use of fertilizers are it improves the growth of crops and it harms the organisms which live in the oceans. Thus, the correct options are A and E.
What are the effects of fertilizers?A fertilizer is any material of natural or synthetic origin which is applied to the soil or to plant tissues for the supply of plant nutrients. Fertilizers may be distinct from that of liming materials or other types of non-nutrient soil amendments. Many sources of fertilizer which exist are both natural and industrially produced.
Fertilizers boost the crop yields, however the excessive usage of crops has hardened the soil, reduced fertility, also strengthened the insecticides, polluted air as well as the water quality, and emitted the greenhouse gases, creating health and environmental risks.
Therefore, the correct options are A and E.
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Your question is incomplete, most probably the complete question is:
Which statements describe the impact of the use of fertilizers? Select two options Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly. This decreases the amount of oxygen in the water, which can cause organisms that depend on it, like fish, to die.
It improves the growth of crops
It provides more food for fish
It causes erosion and washes away soil.
It causes the death of crops
It harms organisms that live in the oceans
Plants are called “producers” because they make their own food by gathering energy from the Sun. Plant populations compete with each other for light, nutrients, and space. One survival pressure comes from “consumers” who eat the plants for food.
Think of an example of a plant that has evolved a mechanism for protecting itself against consumers. Describe the mechanism. Describe how a consumer might overcome this mechanism!
Answer:
one example would be "Acacia Collinsii."
A surfer gets faster as he travels through a large wave. Are the forces on
the surfer balanced or unbalanced? How do you know?
2 - ATLET
Answer:
erm unbalanced?
Explanation:
i think its unbalanced because the surfer is getting faster so the force pushing him is stronger than the one pulling him
The cross of these two faces produces an offspring. If the alleles for color show incomplete dominance and the alleles for eye shape are codominant, what will the offspring look like?
a yellow smiley face with two star eyes
a yellow smiley face with one circle eye and one star eye
an orange smiley face with two circle eyes
an orange smiley face with one circle eye and one star eye
The offspring will have a yellow smiley face with one circle eye and one star eye.
What is codominance?When a hete---rozygous genotype generates an intermediate phenotype that combines the two homozygous traits, incomplete dominance results. When both alleles have an impact on the phenotype of the heterozygous person, codominance occurs.
Depending on the genetic composition of the parents, the baby may have two star eyes, two circle eyes, or one circle eye and one star eye. Hence, the offspring will have a yellow smiley face with one circle eye and one star eye.
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Answer: d. an orange smiley face with one circle eye and one star eye
Explanation:
Which of the following organelles can change shape, can move quickly around the cell, and is found in both plant and animal cells? Cell wall Central vacuole Chloroplast Mitochondrion
Answer:
Mitochondrion
Explanation:
Both plant and animal cells contain Mitochondrions and they move within the cell. Hope this helps :)
