Answer:
The correct answer is - A. MHC I molecules
Explanation:
Major histocompatibility complexes (MHCs) are presented to different T cells to identify the antigen on the host or infected cell. There are two MHCs - class I and class II. The class I MHC presents to cytotoxic T cells while MHC II to helper T cells.
A cytotoxic T cell only binds to the infected cell displays the foreign antigen such as viruses on the infected cell surface in order to recognize and kill the cells.
On a miscue analysis, a high semantic similarity and low graphic similarity suggests that the student is:______.
a) neglecting phonics.
b) integrating phonics and contextual clues.
b) overusing phonics.
d) neglecting context.
Answer:
A
Explanation:
On a miscue analysis, a high semantic similarity and low graphic similarity suggests that the student is neglecting phonics
If an equal force is applied to each of the following, which would be the least affected?
A.
5kg hummingbird
B.
90kg cheetah
C.
2,000kg schoolbus
D.
6,000kg airplane
Study the diagram of a cell.
Which structures are found in both plant and animal
cells?
O W and X
O W and Z
O X and Y
Y and Z
Help me please
Natural selection occurs when:____.
a. a factor in the environment alters the genetic information in DNA of all members of a species.
b. only when nonrandom mating occurs.
c. a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.
d. when a small number of individuals of a population break away and form a new population.
Answer: The correct option is C.
a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.
Explanation:
It is a new genetic variation occurs that allows individuals to have a reproductive and survival advantage because natural selection is a survival mechanism in which organisms develop a variation in genetic traits or develop characteristics which help them to reproduce,survive,adapt to their environment and pass on these characteristics to their offsprings which can be transfer to generations.
Sensory input from the skin of the foot reaches the cerebral cortex via a third order neuron that originates in the:____________.
Answer:
Central posterolateral thalamus.
Explanation:
The third order neuron originates from Central posterolateral nuclei thalamus because it is the nucleus of thalamus because it receive impulses from the neospinothalamic tract and the medial lemniscus of the posterior column-medial lemniscus pathway i.e it received sensory information from the body, send it to the brain and then transfer the information to brodman.
ypu are a molecular of water. choose a starting point in the water cycle and describe the pyou would go through to move through the entire cycle
Answer:
Im just a molecular of water within a glass that sitting out in the sun.The suns heat causes me to trun into a gas state where I then make my way up and into a cloud.In this cloud I (water vapor) cool down and turn back into liquid water.I and other water droplets condense onto one another.We grow until we get to heavy to stay in the cloud and then I fall back to earth as rain!
Explanation:
What energy transformation occurs when you use a hot pack?
Answer: Thermal energy
Explanation:
DNA is composed of two complementary strands this is reflected in the fact of that
Answer: The number of adenines in one strand is equal to the number of thymines in the complemetary strand.
Explanation:
Deoxyribonucleic acid or DNA is a molecule that contains the genetic information in all living organisms. So it contains all the hereditary genetic information that has the instructions to development. This DNA molecule consists of two strands that bond together to form a double helix structure. Each strand of DNA is made up of nucleotides which are basic chemical components made of a phosphate group, a sugar group and one of four types of alternative nitrogenous bases. The four types of nitrogenous bases found in the nucleotides are:
Adenine (A)Thymine (T)Guanine (G) Cytosine (C).The sequence of these bases determines how genes are made, and each gene has different biological instructions to create proteins (that will have different functions in the organism). To form a DNA strand, the nucleotides are linked together in chains, alternating with the phosphate and sugar groups.
The nitrogenous bases are complementary between them. Adenine and thymine are complementary, as are guanine and cytosine. So since adenine is complementary to thymines, and cytosine is complementary to guanine, the number of adenines in one strand is equal to the number of thymines in the complemetary strand. And the number of cytosine is equal to the number of guanine.
DNA is composed of two complementary strands this is reflected in the fact of that - The amount of adenine in one strand is always equal to the amount of thymine in the complementary strand.
A stable double helix of DNAthe two strands of DNA are antiparallel which means if one strand is, the 5' → 3' direction of one strand runs opposite to the other strand.The two DNA chains are held together by complementary base pairing between A and T bases and between G and C bases.The hydrogen bonds are found between the bases of the two strands of nucleotides.Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine.This is called complementary base pairing.
Thus, DNA is composed of two complementary strands this is reflected in the fact of that - The amount of adenine in one strand is always equal to the amount of thymine in the complementary strand.
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What is the type of mutation that always changes all of the amino acids
after the mutation? *
how are logistic and exponential growth similar?
Answer:
because both are same words
Explanation:
Answer:
Both growth models begin with a population that is growing at a constant rate.
Logistic growth follows a period of exponential growth, as population growth slows or stops.
Exponential growth is only possible when resources are unlimited.
Logistic growth shows what happens when resources become scarce and population growth slows.
Explanation:
Explain how iron band formations are
evidence for the evolution of Earth’s
atmosphere.
Answer:
Photosynthetic organisms were making oxygen, but it reacted with the iron dissolved in seawater to form iron oxide minerals on the ocean floor, creating banded iron formations. ... The oxygen that is now in the Earth's atmosphere was not there at the beginning.
Explanation:
Band formations are thought to develop from cyanobacteria. It was developed as product of cyanobacteria photosynthesis.
What is the other name of cyanobacteria ?The other name of cyanobacteria is blue green algae.
The oceans must change between aerobic and anoxic situations. This characteristic makes banded iron development of direct indicators of oceanic oxygen levels, providing us with a data of Earth's oxygenation.
Banded iron formations are brought to have formed in sea water as the consequence of oxygen production by photosynthetic cyanobacteria. The oxygen joined with dissolved iron in Earth's oceans to form insoluble iron oxides which precipitated out forming a thin layer on the ocean floor.
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The frequency of sickle-cell anemia, an autosomal recessive condition, is 0.007. Assuming that the population is in H-W equilibrium, what is the frequency of the recessive allele that causes the condition? Enter your answer to the nearest 0.001.
Answer:
The correct answer is - 0.084
Explanation:
Sickle cell anemia is a autsmal recessive blood disorder of RBCs where RBC shape altered to the sickle shape or cresecent moon that obstruct and damage the veins and artries.
Normal allele is represented by - HbA - p
sickel cell allele is represented by - HbS - q
genotype frequency of normal allele HbA in the population = p2
genptype frequency of HbAHbS in the population = 2pq
genotype frequency of autosomal recessive HbS = q2 = 0.007 (given)
So, the allelic frequency of the recessive allele =
q = √ 0.007 = 0.08366 or 0.084
What occurs after sunlight is absorbed by a chloroplast?
A. The light energy is used for the production of a carbon dioxide and water,
B. The light energy is converted to a glucose molecule
C. The light energy is converted to green light, giving the leaf its color.
D. The light energy is distributed throughout the cell to be used by basic cell functions.
Answer:
B
Explanation:
A cannot be true as photosynthesis requires carbon dioxide and water and uses light energy to break bonds and form oxygen and glucose
C cannot be true as chloroplasts contain chlorophyll which gives the cell its green colour by not absorbing green wavelengths of white light
D is not right as I do not believe photosynthesis is a basic function
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with various acidic solutions of known pHwhile the control set was treated with a solution of .
Answer:high ph is harmful to this type of plant
Explanation:
4. How did the pH of the water affect the hatching of the brine shrimp?
I
If the moon moves farther away from the earth the earths oceans will experience what? 
Answer:
flatten out, less waves, become more calm, no more tides
Explanation:
Which of the following is part of a skeleton's biological profile that forensic
anthropologists try to establish?
O 1) gender
O 2) age
O3) height
O4) All of the answer choices are correct.
All of the answers should be correct
Answer:
I want to say all of the above / all of the answer choices are correct
Explanation:
The gender can be determined once the skeleton has reached adulthood
Age by how the boned have matured like the teeth, skull, and even pelvis
The height, if you have the full skeleton, then there you go
*Please note that I have not taken a forensics class but I did some light research and I have some background knowledge
*Also found out, with light research that they can even tell the race by a person's skeleton
You would MOST LIKELY find a savannah grassland biome in an area with
A)
50 cm of precipitation.
B)
100 cm of precipitation.
200 cm of precipitation.
D)
250 cm of precipitation.
Answer:
D
Explanation:
Savannah grassland biome is found in an area with an average precipitation of 76.2-101.6 cm. Therefore, option B is correct.
What is the savannah grassland biome?A region of grassland with scattered trees or groups of trees is how the savanna biome is frequently defined.
The savanna is a dry environment, making it difficult for tall plants like trees to flourish. The trees and grasses that thrive on the savanna have adapted to the dry climate and limited water supply.
In regions with savanna growth, a tropical wet and dry climate is prevalent. The annual precipitation averages between 30 and 50 inches, while the mean monthly temperatures are at or above 64 degrees Fahrenheit. Less than 4 inches are received per month during the dry season for at least five months out of the year. Hence, option B is correct.
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Which wavelength of light are more stretched—red light or blue light?
Answer:
Red
Explanation:
Blue light has a shorter wavelength than red.
Explain how the structure of a cell’s membrane is related to its functions.
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2000 m/s2. What is the net force, to the nearest newton, that accelerates the ball?
Hello!
[tex]\large\boxed{F = 100N}[/tex]
Use the equation F = m · a (Newton's Second Law) to solve:
We are given the mass and acceleration, so plug these values into the equation:
F = 0.05 · 2000
F = 100 N
Which of the following organisms would use cellular respiration in mitochondria
to produce ATP for their energy needs? *
1.ducks
2.frogs
3.bacteria
4.grasses
6.sharks
7.snakes
8.trees
9.bears
Answer:
Frogs, ducks, sharks, snakes, bears, grasses, and trees.
Everything except bacteria.
Explanation:
All eukaryotes use cellular respiration in the mitochondria.
Prokaryotes, such as bacteria, do not have a mitochondria.
Which statement is most true about technological design
A. There is only one single best solution to most problems.
B. Tradeoffs are often avoided.
C. There is no room for creativity in design.
D. There may be multiple solutions to a single problem.
Technological design provides multiple solutions to a single problem.
What is technology?Technology is the application of scientific knowledge to produce tools for use of man to make life more comfortable and work easier.
Technological design refers to the various designs of tools used by man.
Technological design ensures that there are multiple tools available for man to solve a particular problem.
For example, cars, ships and aeroplanes are various technological design for transport.
Therefore, technological design provides multiple solutions to a single problem.
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When organisms move out of the population, this is known as?
When organisms move out of the population, this is known as EMIGRATION.
The population growth is largely determined by the birth rate, death rate, immigration, and emigration.In biology, emigration refers to the process by which one or more organisms leave its/their original population in order to relocate to another geographic region.Moreover, migration occurs when animals travel from one habitat to another in order to search for food, new habitat conditions, mates for reproduction, etc.
In conclusion, when organisms move out of the population, this is known as EMIGRATION.
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which organ system is responsible for transporting oxygen throughout the organism,
Which step is not part of a normal convection cycle?
A.
Unequal heating creates a pressure difference.
B. Air flows from a high-pressure area to a low-pressure area.
C. Cooled air sinks toward the surface, creating a low-pressure area
D. Warmed air sinks, creating a high-pressure area as it falls.
above it.
Answer:
D. Warmed air sinks is not a normal convection cycle outcome
Explanation:
Warm air is buoyant and rises. Cold air is dense and sinks.
Think of fog in the air. Fog forms in low/cool areas, as the sun comes out and warms up the atmosphere the upper atmosphere, heat flows to cold so upper atmosphere air displaces the fog.
Space heating, the steam or hot water radiators are placed along the floor typically causing convection of warm air to rise up over windows and cold walls, breaking up cold air drafts.
25-1
Seasonal
Forest
Biome
Productivity
Kcal/m2/year
i Thom Scrub
Grasse
Desert
TROPICAL
20-
Scrubber Semi Dosen
Tundra
600
IS-
TEMPERATE
Grassland
2000
10-
Mean Annual Temperature (°C)
Pesert
200
0-
Seasonal
Forest
6000
5-11
Tundra
Rainforest
9000
10-
Scrubland
1000
500 1000 1500 2000 2500 3000 3500 4000
Mean Annual Precipitation (mm)
Based on the data given in the graph and table, which environmental factor contributes
to greater biodiversity?
O Plant biomass per meter
0 Available water
Average latitude
0 Average temperature
Answer:
18000
Explanation:
you add all the mean Annual precipitation
In eukaryotic cells, a number of organelles allow the cell to produce and
distribute proteins. Where are proteins modified, sorted, and packaged?
O rough endoplasmic reticulum
smooth endoplasmic reticulum
O ribosomes
Golgi apparatus
Answer:
rough endoplasmic reticulum
What is erosion?
OA) The breakdown and movement of material.
O B) Materials carried by a stream.
C) The breakdown of material.
OD) The movement of material from one place to another.
Clear selection
Answer:
A.
Explanation:
the process of eroding or being eroded by wind, water, or other natural agents
Would the movement of oxygen through the cells?
