Which occurs first?
seed
growth
mitosis
fertilization
First comes fertilization, when two gametes combine to form a zygote.
O3 —> O + O2
A Synthesis
B. Decomposition
C. Replacement
Answer:
Synthesis
Explanation:
What leads to competition in an ecosystem ?
Answer:
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Explanation:
porq siue
summarize what biogeography is and an example for it
IN YOUR OWN WORDS
Explanation:
The study of how plants, animals, and organisms are spread across the globe over time and space is known as biogeography.
Example of biogeography includes the splitting of Pangea (all the Earth's continents were one large landmass).
How did Darwin disprove Lamarck? Explain why Darwin still thought that Lamarck’s idea was very important.
Lamarck's theory was disproved by Darwin's theory of natural selection which says only favourable genetic variations are passed on from parents to offspring. But, according to Darwin, Lamarck's idea was important because almost all organisms become complex with evolution.
What were Lamarck's and Darwin's theories? According to Lamarck, all-natural variations that occur within an organism are passed on from generation to generation. The organisms become complex with time and simple organisms get disappear or extinct. But, according to Darwin's theory of natural selection, the variations that are beneficial for the survival of organisms are passed on from generation to generation. This natural selection leads to evolution that helps in the long survival of some selected species. If the organisms are not adapted or changed to their surrounding conditions, then they extinct. More complex organisms have more chances of evolution than simple organisms. This means that with evolution, organisms become complex.Thus, Darwin disproved Lamarck's theory as all variations are not passed on. But, he still thought that Lamarck's idea was important as with evolution, organisms become complex to ensure their survival.
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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.
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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.
You created three different derived strains from E.coli K12. One strain includes a deletion in a gene critical for biosynthesis of diaminopimelic acid, one strain lacks dnaQ, and the last strain lacks both. Describe experiments to clearly differentiate between these three strains through phenotypic assays alone (not just by sequencing the genomes or any derivative of genotyping). Include all necessary controls to interpert the experiment.
Answer:
For the strain that lacks DNAQ there will be slowed growth and there will more DNA breakage by Tunel assay
For the strain that lacks both The cells there will have a huge DNA breakage and less peptidoglycan.
Explanation:
One of the experiments that can be used to differentiate diaminopimelic acid is by observing the cell walls in which they are present because are needed in the formation of cell walls. while to differentiate the three strains
For the strain that lacks DNAQ there will be slowed growth and there will more DNA breakage by Tunel assay
For the strain that lacks both The cells there will have a huge DNA breakage and less peptidoglycan.
. What structure in amoebas aids in phagocytosis?
Answer:
Explanation:.Amoebas and some other heterotrophic protist species ingest particles by a process called phagocytosis in which the cell membrane engulfs a food particle and brings it inward, pinching off an intracellular membranous sac, or vesicle, called a food vacuole.In amoebas, pseudopods are used to surround the targets for phagocytosis the surrounding particles kill the particle and use their useful products.
What is phagocytosis?Phagocytosis happens in certain organisms, such as amoeba, by surrounding the target particle with pseudopods, as in animal phagocytes. Entamoeba histolytica, an amoebozoan, can phagocytose red blood cells in animals.
The engulfed item is therefore confined within a phagosome, a membrane-bound vacuole. The phagocyte digests the ingested particle utilizing hydrolytic enzymes found within the cell's membrane-enclosed sacs called as lysosomes.
All amoebae get an amoeboid lifestyle (the ability to alter cell shape by extending and retracting pseudopods), and most amoebae are professional phagocytes that feed on microbes such as bacteria via phagocytosis.
Therefore for engulfing surrounding the target particle amoebas use pseudopods.
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An organism that is not capable of making its own food is know as which of the following?
O A. Heterotroph
B. Autotroph
оо
C. Phototroph
D. Producer
0
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.
what are the two phases of the respiratory movement of man? Are they the same in a grasshopper or a fish? PLEASE
Answer:
The same in a grasshoppers. Cause grasshoppers are mammals
Explanation:
Which statement DOES NOT describe a possible function of chromosomes?
Predict outcome of a cross between the fruit flies shown below?
Answer:
1:1
Explanation:
outcome =2XX*,2YX*
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..........
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
What is the answer to this?
Answer:
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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.
Mutations help in evolution because:
*
Select 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
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)
which cell is defective in situation 1? what happens to the hormone concentrations as a result of this defect
Answer:
What is the situation your question refers to?
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.
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Suppose that a phone that originally sold for $800 and loses 3/5 of its value each year after it is released.
After 2 years,how much is the phone worth?
Answer:
128
Explanation:
800-480=320
320-192= 128
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.
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:
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 are 3 factors that can affect the way enzymes work? In your own words, explain how each factor would
affect an enzyme
Earthworms improve the texture and composition of the soil, aerating compacted earth, adding nitrogen to the soil, and helping form small clusters
of soil, called (blank)
which their slime helps hold together.
Answer: i think its soil structures
Explanation:
Worms dig hols and hold the soil togetyer with slime and make pockets for air and water. Im not 100% sure but i think it is.
Answer:
soil structure
Explanation:
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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.