Besides plants and insects, what else would the student need in the ecosystem? Why?
What are the functions of centrioles
Answer:
Centriol play a major role in cell division (mitosis)
Explanation:
Help coordinate cell division (only in animal cells)
why can b blood donate to AB blood??
Answer:
Type B contains the B antigen.
This type is relatively rare (second only to AB). It contains the B antigen on its red blood cells, and the A antibody (to attack A antigens) in its plasma
Explanation:
The majority of pesticides do not have a residual effect (i.e., not persistent; lose chemical activity) in the soil.
a) True
b) False
Answer:
B- False
Explanation:
Pesticides can contaminate soil, water, turf, and other vegetation. In addition to killing insects or weeds, pesticides can be toxic to a host of other organisms including birds, fish, beneficial insects, and non-target plants. Soil can be degraded and the community of organisms living in the soil can be damaged by the misuse or over use of pesticides. Some pesticides are more toxic to soil organisms than others.
Hope this helps!
Your Leg is made up of:
A. many cells
B.one cell
C.Eubacteria
D.an organ
Someone help please
Answer:
a
Explanation:
which 3 reactions form atp?
Answer:
Answer below
Explanation:
The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
The two main zones within the A climate are
Answer:
The Earth has three main climate zones: tropical, temperate, and polar. The climate region near the equator with warm air masses is known as tropical. In the tropical zone, the average temperature in the coldest month is 18 °C.
The climate has three main zones such as tropical, temperate, and polar.
What are Earth's climatic zone?
A climate zone refers to a condition by observing different factors like temperature, humidity, precipitation, season and natural vegetation of an area.
Earth's climate zones is surrounded by the horizontal belts of different climates such as tropical, dry, temperate, continental, and polar zones.
Firstly, Tropical climate zones which present near the Equator of earth and have high temperatures and high precipitation, while Dry or arid climate zones shows high temperatures and little annual precipitation.
Similarly temperate climate zone observed Earth’s middle latitudes and shows wider temperature and seasonal variations are more distinct.
Continental climate zone observed in mid-latitudes, shows swing of temperatures from cold in winter to warmer, where as polar climate zones shows harsh climate which cannot to support vegetation.
Hence, major zones are tropical, temperate, and polar.
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Lateralization refers to the
a. number of neurons produced during prenatal development.
b. organizational structure of the peripheral nervous system.
c. specialization of the two hemispheres of the cerebral cortex.
d. plasticity of the spinal cord.
All of the following events occur during prophase in mitosis except
WILL MARK BRAINLIEST
A. Condensation of DNA
B. Crossing over
C. Pairing of chromosomes
D. Spindle formation
All of the following events occur during prophase in mitosis except crossing over (Option B)
Mitosis can be divided into four phases: prophase, metaphase, anaphase, and telophase.During prophase, the chromatids condense into chromosomes, thereby making them visible. The mitotic spindle is a structure composed of microtubule proteins that segregate the chromosomes in mitosis. This structure is formed in prophase.In Prophase homologous pairs of chromosomes are paired together. In metaphase, these chromosomes are lined up at the equator of the cell and sister chromatids are attached to the spindle fiber.Crossing over (or recombination) is the exchange of genetic material between non-sister chromatids that occurs during prophase I of meiosis.In conclusion, condensation of DNA, the pairing of chromosomes and, spindle formation occur during prophase, whereas crossing over occurs in prophase I of meiotic cell division (Option B).
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During the cell cycle, DNA replication must occur?
A) Before the cell divides
B) Immediately following
cytokinesis
C) During mitosis
D)All of the Above
10 POINTS PLZ ANSWERRRR
Which of the following best describes non-matter?
A substance that is either a solid, liquid, or gas
Any material that has a length and a volume Anything with no mass that takes up no
space Something that takes the shape of a container
Answer:
c is the answer in my opinion .
Explanation:
Its because non matter has neither volume nor mass and no space also.
Answer:
Matter is something that takes up space so the answer is Anything that does not take up space
Explanation:
What caused Antarctica’s climate to change from a more temperate climate to its current climate?
A)
isolation from the other continents
B)
El Niño
C)
being surrounded by ocean
D)
volcanic eruptions
E)
all of the above
Answer:
E
Explanation:
Answer:
E) All of the above
Explanation:
Got it right on the test
Why can someone lost at sea die of thirst
Answer:
someone can die at sea from thrist because there is no drinkable water.
Explanation:
You cannot drink the water surrounding you because it is salt water. (not the regular non-salt water we drink) the salt in the ocean water will actually dehydrate you more.
Hope this helps!!
In the diagram of the nitrogen cycle, which number represents nitrogen
2 points
gas?
Terrestrial
cycling
Animals
68
7
Decomposition
2
Uptake
of amino
acids
ΝΗ,
4
оо
Answer:
The illustration below shows translation in progress. The orange structure represents a ribosome and the dark grey ones labelled A and
B represent 2 tRNA. Fill in the blanks in the next sentence and answer the short essay question that follows.
A
5'-AGGGACUAUGAACAUUUACCAACUACGGUGGCGUUAGAC
Explanation:
A __________________ is a place holder or object where you can store a value or piece of data named by you
Which organelle makes lipids?
Answer:
endoplasmic reticulum
Explanation:
The endoplasmic reticulum is an organelle that is responsible for the synthesis of lipids and the modification of proteins.
what is Janus green b
Answer:
Janus Green B is a basic dye and vital stain used in histology.
Explanation:
In the correct order, list each structure of the pig an egg/fetus will pass through from its site of production through fertilization, fetal development, and birth.
not in order options:
urogenital opening
ovary
oviduct
vagina
uterus
1. Which of the following does not absorb moisture readily ?
a.cotton
b.linen
c.viscose
d.acetate
e.nylon
Nylon does not absorb moisture readily.
What is nylon?Nylon is a synthetic fibre."It is made from reacting carbon-based chemicals found in coal and petroleum in a high-pressure, heated environment."It looks somewhat like silk.It is water repellent.Hence, the correct option is e. nylon.
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What would happen if you sweat while your body was cold?
A.positive feedback
B. Negative feedback
Answer:
I guess Negative Feedback
Explanation:
That's Rough Buddy
Answer:
negative feedback
Explanation:
you would probably have a fever :/
DNA replication results in two DNA molecules,
how do mutations affect our communications?
Explanation:
When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.Over time, a mutation might take place in one of the descendant cells, causing increased activity of a positive cell cycle regulator. The mutation might not cause cancer by itself either, but the offspring of this cell would divide even faster, creating a larger pool of cells in which a third mutation could take place.
A student wants to know what effect temperature will have on the germination rate of radish seeds. To test this, she obtains 3 petri dishes and 60 radish seeds. She places 20 seeds in the first petri dish and stores it at room temperature. She places another 20 seeds in the second dish and places it in the freezer. She places 20 seeds in the third petri dish and places the dish in an incubator. Over the next two weeks, she waters the dishes daily and records the number of seeds germinate. At the end of the experiment she calculates the germination rate for the seeds at each temperature.
Hypothesis: ____________________________
Experimental Group: ____________________________
Control Group: ____________________________
Manipulated Variable (IV): ____________________________
Responding Variable (DV): ____________________________
Constants: ____________________________
Answer:
Hypothesis: IF the temperature is high, THEN the germination rate of radish seeds will increase.
Experimental Group: 20 Seeds in petri-dishes placed in the freezer and incubator each
Control Group: 20 seeds stored at room temperature
Manipulated Variable (IV): TEMPERATURE
Responding Variable (DV): GERMINATION RATE
Constants: Amount of water, same amount of time (2 weeks)
Explanation:
- The hypothesis is a testable explanation given to an observed problem. A possible hypothesis is IF the temperature is high, THEN the germination rate of radish seeds will increase.
- Independent or manipulated variable is the variable that is changed or manipulated variable in an experiment. The TEMPERATURE is the independent variable in this case.
- Dependent or responding variable is the variable that is measured in an experiment. In this case, the dependent variable is the GERMINATION RATE
- The experimental group is the group that receives the experimental treatment. In this case, the experimental group is the 20 Seeds in petri-dishes placed in the freezer and incubator each.
- The control group is the group that does not receive the experimental group. In this case, the control group is the 20 seeds stored or placed at room temperature.
- Constants are the variables that are kept unchanged throughout the experiment. In this case, the constants are Amount of water, same amount of time (2 weeks)
Answer:
GIVE ME MY POINTS NOW
Explanation:
A dihybrid cross experiment is carried out in pea plants. The traits being observed are flower color and stem length. In the F2 generation, 81 plants have purple flowers and long stems, 27 plants have purple flowers and short stems, 27 plants have white flowers and long stems, and 3 plants have white flowers and short stems.
Which traits are recessive?
A.purple flowers, long stem
B.purple flowers, short stem
C.white flowers, short stem
D.white flowers, long stem
Answer:
c
just took test
Explanation:
white flowers, short stem
What is the keystone species
Answer:
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
Explanation:
Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Explanation:
The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.
pleasseeee help...........
Answer:
The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet. It was proposed by Alfred Wegener.
Explanation:
Explain the contribution of antigenic determinant in false negative and false positive test
Answer:
The contribution of the antigenic determinant is given below:
Explanation:
Antigenic determinant or epitope is the part of the antigen that is recognized by the immune cells or antibodies such as the B- cells by binding to these cells and evokes the response in the host. The antibodies bind to the epitope segments only not to the entire antigen protein.
A false-positive test is a test where the result suggests that an individual has a specific condition but in reality not having such condition. opposite in the false-negative So, the antigenic determinant binds to the specific antibodies and shows wide significance to reduce the false-negative or false-positive.
LIQUID DENSITY COLUMN
-Olive Oil
-Vegetable Oil
please help me with this question thanks:)
Answer: Vegetable oil
Which of the following statements is NOT true regarding the nebular hypothesis?
Question 1 options:
A) A large cloud of hydrogen gas and dust begins to collapse under its own gravity.
B) The collapsing cloud begins to spin.
C) The spinning, collapsing cloud expands into a ball.
D) As the material coalesces in the center, it becomes dense, compresses, and heats up.
A
A large cloud of hydrogen gas and dust begins to collapse under its own gravity.
The incorrect option is "a large cloud of hydrogen gas and dust begins to collapse under its own gravity"
What is the nebular hypothesis?The most widely accepted theory in cosmogony to explain how the Solar System formed and evolved is the nebular hypothesis. It implies that gas and dust orbiting the Sun are what created the Solar System. The nebular theory proposes that a rotating cloud of material called a nebula, composed primarily of light components, flattened into a protoplanetary disk and developed into a solar system made up of a star and circling planets.Immanuel Kant developed the hypothesis.In 1900, Chamberlain and Moultan hypothesized that a wandering star's approach to the sun caused a cigar-shaped extension to separate from the solar surface.Learn more about the nebular hypothesis here:
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Excess carbon gasses released into the atmosphere cause additional radiation and Earth's average temperature to increase. This phenomenon is known as
Answer:
Green house gases and global warming
When pushing off the wall doing breaststroke, swimmers must do a/an __________pull?
Answer:
i started swimming this year its pretty fun : ) I believe the answer to your question would be a pull down/breakstroke pull
Explanation:
I hope this helps your welcome..
Pull-downs are essential to a fast breaststroke race. Without a good pull-down, you have a major disadvantage. You don’t want to start the race behind your opponents! If you’re looking to improve your breaststroke time, mastering the pull-down is a great way to do it. This guide is filled with easy steps to strengthen your race through a powerful pull-down.