Answer:
b.
blind spot
that's the answer
Mutations help in evolution because:
*
Organisms provide people with jobs and the things they need to live that gives them _____ value?
A economic
B niche
C ecological
D recreational
Answer:
Organisms provide people with jobs and the things they need to live that give them economic value
Explanation:
Natural resources might are the supplies of any economic activity carried out by humans. It is not possible for humans to live with no natural resources because it would mean a stop in production, hence in feeding, and finally, it would lead to death.
Natural resources lack a price because there is no market to interchange them. However, they have an economic value to humans because they are the base of any economic activity, keep a balance in nature, and depend on each other. Any alteration of the natural equilibrium of the environment means a disbalance in the economy. Then it became necessary to estimate that value or use an indicator of its importance for social welfare. It is about making an economic valorization of the environment.
Economic value refers to the quantification of the value of natural resources. It is the economic importance of natural resources for the satisfaction of human needs. The value determined for natural resources is based on the explicit or implicit, factual or potential exploitation of resources.
It is basically about putting a quantifiable value on natural resources according to their social benefits.
Some natural resources represent an actual price in the economic market, while others do not, but that have many other benefits.
The economic value might be determined by "the use-values" (direct or indirect uses associated with the market) and to the "not use-values" (the values for future use, a potential use, and the intrinsic value of resources existence).
Answer:
b
Explanation:
Persistence length for a cytoskeletal filament is the minimum filament length at which random thermal fluctuations are likely to cause it to bend. Which of the following comparisons are true, considering the persistence lengths of (a) an actin filament, (b) a bundle of cross-linked actin filaments, and (c) a microtubule
The provided question is incomplete as the group of choices were not given, however, the choices as follows:
A. (a > b) and (a > c)
B. (a > b) and (a < c)
C. (a < b) and (a > c)
D. (a < b) and (a < c)
E. (a > b) and (b > c)
Answer:
The correct answer is - D. (a < b) and (a < c)
Explanation:
The persistent length of actin filaments, a bundle of cross-linked actin filaments and microtubules can be compared on their typical persistent length.
The persistent length of actin filaments is 15 µm. And due to the crosslink with one another to make a bundle their length reduced As the actin filaments cross-link each other their persistent length will be reduced. however, it is still longer than single actin filament around 20 nm.
The persistent length of microtubules is 6mm.
So b > a, a < b and a < c.
So fourth option a < c and b > a is the correct answer.
An infection with a tropical parasite may block a lymphatic vessel. ?
Answer:
Blood would not flow to the left arm and brain
Explanation:
This is because the left subclavian trunk or artery supply blood to the left arm and brain. It is located in the thoracic and a blockage of it will cause blood not to flow to the arm and brain and this can cause blood buildup in the arteries, resulting in chest pain, heart diseases and so on.
The rate of diffusion is higher at increased temperatures,
True
False
In corn, red kernel color (R) is dominant to yellow (r) and smooth kernel texture (W) is dominant to wrinkled (w).
Corn heterozygous for kernel color and kernel texture are interbred resulting in the following offspring.
330 red smooth
97 red wrinkled
101 yellow smooth
32 yellow wrinkled
Perform a Contingency Chi-Square analysis and determine if kernel color is independent of kernel texture.
a. Show your DF, chi square value, and p value
b. Do you reject or fail to reject the null hypothesis?
c. Is kernel color independent of kernel texture?
Answer:
a. df = 3, chi-square = 1.7333, p value = 7.815
b. we fail to reject null hypothesis
c. it is independent of kernel texture
Explanation:
h0; there is independence
h1; no independence
9:3:3:1 this is the phenotypic ratio
9+3+3+1 = 16
330 red smooth + 97 red wrinkled + 101 yellow smooth + 32 yellow wrinkled
total observed = 560
1. the degree of freedom = n-1
n =4, 4-1 = 3
to get the chi square computation
(O-E)²/E
expected value for red smooth,
9/16 x 560 = 315
chisquare = (330-315)²/315 = 0.7143
expected for red wrinkled
3/16*560 = 105
chisquare = (97-105)²/105 = 0.6095
expected for yellow smooth
3/16*560 = 105
chisquare = (101-105)²/105 = 0.1524
expected for yelow wrinkled
1/16 * 560 = 35
chisquare = (32-35)²/35 = 0.2571
total chisquare = 0.7143+0.6095+0.1524+0.2571
= 1.7333
with probability = 0.05, df = 3, the value of the chi square from x² table = 7.815
1.7333 < 7.815
so we fail to reject the null
c. we conclude that kernel color is independent of kernel texture
Assuming everything goes smoothly, if 50 cells entered the cell cycle, how many would come out of mitosis?
Answer:
100 cells would come out.
Explanation:
Each cell would split.
PLEASE HELP ILL GET KICKED OFF THE TEAM IF I FAIL!!!!!!!Use the scenano to answer the question.
A student decides to test the effects of watering on plants. She chooses 6 tomato plants and places all of them in the same part of a garden with
plenty of space between them. They get the same amount of sunlight and the same amount of fertilizer each day. She gives each plant a different
amount of water, with the first plant getting no water and the others getting 200 mL, 400 mL, 600 mL, 800 mL, and 1,000 ml. She records the total
height of the plants each day for 3 weeks.
What is the independent variable in this experiment?
(1 point)
sun exposure
plant height
amount of water
amount of fertilizer
Answer:
Amount of water
Explanation:
How to calculate net force
Answer:
Consider all forces acting in the body. Resolved them in x-y-z axes. On every axis, take one direction to be positive and subtract the force of opposite direction from that force.
Explanation:
What is the answer to this?
Answer:
jajajaj akjsjajwsdmuxxjjxx x uyxnndyxnynx
Which statement DOES NOT describe a possible function of chromosomes?
Part I: Explain Ways to Improve Your Design
Imagine that you have unlimited funding and space to build your home. Describe four ways you can modify your design to improve your home’s impact on carbon dioxide emissions or biodiversity.
There are actually a lot of ways to improve your home’s impact on carbon dioxide emissions or biodiversity and I’d to give this four (4) best ways to reduce ecological footprints. Add Energy-Saving Features – like for instance install any energy-saving into your home (e.g. lamps) or you may you like to choose energy efficient appliance Encourage Energy-Saving Habits – one example is when turning off any appliances, do not just turn off the appliance but instead unplug it because all electronics used up energy even if it is a plug. Save/Conserve Buy carbon offset – these carbon offsets mitigates owner’s greenhouse gas emissions. In these ways, we can help our mother Earth.
Why do objects in our solar system orbit the sun?
a. because of gravitational force
b. because of their composition
c. because of their shape
d. because of their electromagnetic force
Answer:
Explanation:
A
Answer:
The answer is A..........
Who benefits from globalization easy answers pls
what are the four types of Organ Transplantation????
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
.Heart transplant. .Heart transplant. Lung transplant. .Heart transplant. Lung transplant. Liver transplant..Heart transplant. Lung transplant. Liver transplant.Pancreas transplant. .Heart transplant. Lung transplant. Liver transplant.Pancreas transplant. Cornea transplant..Heart transplant. Lung transplant. Liver transplant.Pancreas transplant. Cornea transplant.Kidney transplant. .Heart transplant. Lung transplant. Liver transplant.Pancreas transplant. Cornea transplant.Kidney transplant. Trachea transplant. .Heart transplant. Lung transplant. Liver transplant.Pancreas transplant. Cornea transplant.Kidney transplant. Trachea transplant. Skin transplant.Thanks hope it helpsSelect the correct answer.
Which of the following characterizes DNA?
A.
Noncoding sequences that get deleted in the course of evolution
B.
Coding sequences that regulate gene expression
C.
Noncoding sequences that are expressed in different cell types
What is the phenomenon that is causing the bean seedling to bend as shown?
O gravitropism
O phototropism
O rapid response
O thigmotropism
Answer:
Phototropism is the Answer Thank you
Mark brainliest
Describe the types of fission.
Answer:
Binary fission, Nuclear fission, and Multiple fission
Explanation:
Nuclear fission is when a neutron collides with a radioactive atom and breaks it in half, resulting in energy and radiation. BInary fission and Multiple fission has to do with biology.
1. Indicate if each of the following structures is based on actin filaments (A), microtubules
(M), or intermediate filaments (I). Your answer would be a five-letter string composed
of letters A, M, and I only; e.g. AAAMM.
( ) The cell cortex
( ) The mitotic spindle
( ) The nuclear lamina
( ) Cilia
( ) Filopodia
What affects the shape of a molecule?
A) The types of subatomic particles in the molecule
B) The number of subatomic particles in a nucleus
C) The number of electrons in the molecule
D) The composition of atoms in the molecule
Answer: C : The number of electrons in the molecule
Explanation:
it is affected by the arrangement of electrons, but doesn't describe it's arrangement. The shape of a molecule is how the outside atoms are arranged around the central atom. The lone pairs of electrons affect this arrangement, but is not part of it.
Daryl learns that millions of years ago, Earth's climate went through a
rapid change and experienced an ice age. This rapid climate change put a
lot of stress on the plant life of Earth. How would plant life most likely
react to this stress? *
Plants that adapted to the cooler conditions would survive and rapidly evolve into a
new species.
O All plant life would become extinct, and the new plants would evolve very slowly.
The plants would gradually change over time and produce new species.
All plants would evolve into new species and survive the climate change.
Answer:
Plants that adapted to the cooler conditions would survive and rapidly evolve into a new species.
Explanation:
The plants will react by evolving through natural selection.
The plant species that do not have the genes to adapt to the rapid change in climate would become extinct while those with adaptive genes will survive, reproduce, and contribute rapidly to the development of future generations.
In other words, natural selection selects for individuals with adaptive genes and ensures that such individuals reproduce more and give rise to future generations with the adaptive gene while individuals that are poorly adapted to the change in climate gradually fade off the population.
Hence, the plants that adapted to the cooler conditions would survive and rapidly evolve into new species.
In a separate line of experiments, you are studying a protein that you suspect shuttles between the nucleus and the cytoplasm. However, when you localize a GFP-tagged fusion protein, it appears to be only in the nucleus. To test whether it shuttles, you set up a heterokaryon assay. You take a cell expressing the GFP fusion protein and partially fuse that cell with another that does not express the GFP protein. The result is a heterokaryon that has a single cytoplasm but two separate nuclei. You treat the heterokaryon with the translation inhibitor cycloheximide for several hours and then examine the localization of the GFP protein. What do you predict will be observed if the GFP protein shuttles between the nucleus and the cytoplasm
Answer:
Following are the responses to these question:
Explanation:
The heterokaryons were cells of diverse traditions or more nuclei. A heterokaryon cell with network cells (donor and receiver nuclei) sharing a common costly to treat is produced whenever a node containing GFP-tagged protein (donor cell) is merged to a cell non express the GFP-tagged proteins (recipient cell). Unless the intracellular scram nuclear exists, GFP must leave the GFP atoms, be shipped to the cytosol, and be exported to a nucleus with emission of GFP protein (recipient nucleus). It is obtaining nuclear has been beginning to release the GFP protein.
Unless the GFP protein doesn't display a nucleus costly to treat, this is not distributed across time in the metal target. By either sole dissemination through nuclear pores or receptor-mediated routes, protein yelling from nuclear to emotional exhaustion can occur. That GFP proteins are shown in a nucleus only suggests a path via a transmitter. For chloroplast, though, protein disperses via nuclear envelope. It is not the case. It should have nuclear foreign trade signals when ferrying between the nucleus and cytoplasm.
Cycloheximide is indeed a medicine that stops protein expression without elongating. For heterokaryon cells, it inhibits fresh protein synthesis. It makes visualization of a nanoparticle cell of only old pre-existing molecules (before cycloheximide diagnosis). That post GFP substance is a shuttling shielding substance that passes seen between the nucleus and the cytoplasm and the receiver nucleus. Whenever the levels of the shuttle were high, the GFP protein expression is shown both by the sender and receiver nucleus. The recipient nucleus will not be left without any schlepping protein. Thus, the donor nucleus can only be used.
How do Euglena and sperm cells use flagella?
As Following:
Euglena move by a flagella , which is a elongated whip-like network that functions like a little engine. The flagella is located on the front part , and twirls in such a way as to drag the cell through the water. It is connected at an inward pocket called the pool.In sperm cells its help in movement.What is purpose of flagella in eukaryotic cell?Flagella in eukaryotes are used not only for Locomotion, but also for helping in phagocytosis and eukaryotic reproduction.
Thus, this is how Euglena and sperm cells use flagella.
To learn more about flagella click here:
https://brainly.com/question/905839
#SPJ2
THIS IS FOR THE PEOPLE THAT NEED HELP W/ THIS because I found it a real strugle lol
Cells and the Structure of Life Lab Report
Instructions: Complete the Cells and the Structure of Life virtual lab. Record your observations in the lab report below. You will submit your completed report.
Name and Title:
Leah Ruiz
Mrs Pankey
Friday 5th 2021
Cells and the Structure of Life Lab
Objective(s):
In your own words, what was the purpose of the lab?
The purpose of this lab was to explain, show, and gather evidence of the cell theory.
Procedure:
Investigate each of the three components of cell theory to investigate from the corkboard in the virtual lab:
All organisms are composed of cells.
Cells come from existing cells.
Cells are the basic unit of life.
For each section, record your observations below.
Complete your report and submit it for grading.
Data and Observations:
Investigation: All organisms are composed of cells.
What is the main function of each part of the compound microscope?
Part
Function
Eye piece
the eye piece the lens that that user looks through to actually visualise the sample.
Ocular lens
the ocular lens is another name for the eye piece
Objective lenses
the objective lenses are the lenses closest to the sample, and brings the light to the sample. Standard microscope objective lenses have magnification ranging from 4x to 100x
Slide
the slide is a piece of glass where the sample has been deposited. E.g. it could be fixed tissue or live cells.
Cover slip
A cover slip is a smaller piece of glass that covers the sample, protecting it from damage or drying out
Stage
the stage is the part of the microscope that the sample being viewed sits on
Focusing dials
the focusing dial allows the user to adjust the focus of the sample, making visible and sharp
Light
the light is used to illuminate the specimen so that fine details can be deciphered.
Condenser lens
the condenser lens focuses the light source, collecting all the light from the source and redirecing it to a specific point (i.e. the sample)
Observe each specimen under the microscope, and record a description about its appearance.
Specimen Type
Description
Plant cell
The cell is from an onion and showing a divided cell structure.
Animal cell
The animal cell shows red blood cells.
Bacteria cell
The bacteria cells are in the shape of a rod called a rod shape.
Investigation: Cells come from existing cells.
Observe the two flasks, and record information about their appearance.
Day
Flask with open (broken) neck
Flask with intact neck
1
nothing happens
nothing happens
2
The broth in the open flask becomes dinner
The particles go in to the little tube
3
clumps of microorganisms begin to appear on day 3 on the open flask
more go in the tube
4
the clumps of microorganisms increase on day 4
they keep on stacking in the tube
5
clumps increase subsequently on day 5
a bunch of particles are in the tube
Investigation: Cells are the basic unit of life.
Observe the two petri dishes, and record information about their appearance.
Day
Petri dish (on left) containing agar plus nutrients
Petri dish (on right) containing agar without nutrients
1
Nothing happen
Nothing happen
2
Nothing happen
Nothing happen
3
The left one got more bacteria
the bacteria started to go away
4
More bacteria started growing
More bacteria started going away
5
It got more bacteria.
Bacteria kept going away
Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
How did scientists discover that all living things are made of cells?
Around 1850, Virchow saw cells dividing and added that living cells arise only from other living cells. These ideas led to cell theory, which states that all organisms are made of cells, all life functions occur in cells, and all cells come from other cells.
How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
The end of the revolutionary period of the theory of abiogenesis and biogenesis was after the appearance of Louis Pasteur (1822-1895), a chemist who was very interested in chemical changes that occurred during the fermentation process of wine.
Why are nutrients needed for living things? Describe the difference between living and nonliving things.
all living things need water, and some source of food. The difference between a living and non-living thing is that one need water and other nutrients to keep it alive whereas non living things do not.
THE TEACHER ALSO GAVE ME A 100 for this. yw.
Answer:
thank you
your the best i passed
Answer:
TYSMMMMMM
Explanation:
IVE BEEN STUCK ON THIS
PLS HELP QUICK ITS URGENT
George and Kyle were taking a quiz. This was item four:
Scientists just discovered a new kind of organism and gave it the common name blue spinner. Make one statement that must be true about the structure of a blue spinner.
George wrote, "A blue spinner is made of at least one cell."
Kyle wrote, "A blue spinner has tissues that perform specific functions."
Which of the responses is correct? Explain the error made in the incorrect response.
Answer:
George Is correct.
A blue spinner is made up of at least one cell.
Explanation:
George and Kyle took the quiz about the new kind of organism. The characteristics of this organism is not known as it has just discovered. George statement can be true about blue spinner as all living organism are made up of at least one cell. The blue spinner can be unicellular or multicellular organism which will be discovered later by scientists.
An individual way of life can be either unicellular or multicellular is called an organisms. It is a single entity that functions to live and survive.
The statement made by George is correct.
According to George blue spinner is made up of at least one cell. For an organism to be living it has to be composed of either one cell or multiple cells.As the new species discovered can be either multicellular or unicellular.Kyle's statement is incorrect as it is known whether the organism is a single or multi-celled structure as the deduction about tissues cannot be made.Therefore, George is correct and Kyle's is incorrect.
To learn more about organisms follow the link:
https://brainly.com/question/12825206
What leads to competition in an ecosystem ?
Answer:
preguntale a jesus el lo sabe todo
Explanation:
porq siue
A worm is shown in the picture. What kind of worm is it? a planarian a leech a fluke a tapeworm
Answer:
Planarian
Explanation:
The design of the planarian is gentle, flat, and saddle, and it can be jewish, grey, blue, grey, or white. Two alleviation eyespot pigmented zones light intensity, are located on the flippant, triangle curvy head.
Answer:
A(planarian)
Explanation:
I did the test on edg 2021
escribe en cual de los organos anteriores tienen lugar estos procesos . se filtran las sustancias de desechos que ha recogido la sangre
Answer:
Riñones.
Explanation:
Los riñones son dos órganos ubicados en la cavidad abdominal detrás del peritoneo, a la izquierda y derecha de la columna. Los riñones tienen la función de mantener constante la composición de la sangre, eliminando así las sustancias no deseadas disueltas, como los productos de desecho del metabolismo y los venenos y medicamentos absorbidos a través de los alimentos. El riñón también mantiene el equilibrio ácido del cuerpo a largo plazo, mediante el transporte de carbonato de hidrógeno e iones de hidrógeno. El producto que producen los riñones, una solución de sustancias que el cuerpo ya no puede usar, se llama orina.
Enzyme and substrate concentration
4.
*RECALL: What is a substrate?
Explanation:
base on which an organism lives the soil is the substrate of most seed plants. .A substance acted upon (as by an enzyme)
short note on occurrence of water in different source and state
Answer:
Water circulates in nature through a continuous and permanent process called the hydrological cycle or the water cycle. In this process the physical and biological elements of nature intervene, atmosphere, rain, water from lakes, rivers and seas, soil and vegetation. Water is in several states: solid state, which is ice. Liquid state, includes groundwater, which is found in the deep layers of the soil, and surface water, which includes innumerable rivers, and a gaseous state, which is found in air and clouds.
Explanation:
Water covers 71% of the earth's surface. The water cycle comprises three phases: Evaporation, filling the atmosphere with large amounts of water vapor (gaseous state). Condensation, forming water droplets in the form of a cloud or mist. Precipitation: the water vapor that is the clouds cools and precipitates in the form of rain, hail or snow. When the rain falls, some of the water is retained in the dense foliage and branches of the trees. Another seeps into the ground, forming the layers of underground water and the other part drains superficially forming streams, rivers or increasing their flow. All water, through evaporation, can change back to the gaseous state, restarting the water cycle. On our planet, water is located mainly in the oceans where 96.5% of total water is concentrated, glaciers and polar caps have 1.74%, underground deposits in (aquifers), and continental glaciers represent the 1.72% and the remaining 0.04% is distributed in decreasing order between lakes, soil moisture, atmosphere, reservoirs, rivers and living beings. Water is found in nature in three different forms or states in: solid state, such as ice, hail or snow, liquid state, such as the water we consume and the water of the seas, rivers and lakes and in the gaseous, when it forms clouds or steam that comes out of boiling water.