Answer:
1. High osmotic pressure due to the hypersaline nature of marine habitats
2. The dependence of flowering plants on pollinating insects for fertilization. These insect pollinators are however, absent in the marine environment.
3. Competition from already-established sea weeds and grasses provides another challenge to flowering plants invadingnthe oceans.
4. Constant changes in the environment as well as temperature changes too
Explanation:
The marine environment is a hypersaline environment with a high salt concentration relative to that of the plant cell. Due to high salt concentration of the marine environment, their is high osmotic pressure on living oragnisms found therein. Organisms must have well-adapted osmo-regulatory mechanisms to counteract the high osmotic pressure of their environment. Therefore, flowering plants face the challenge of removing excess salt from their cells or else lose water to their environment, hence resulting in the death of the plant. However, most flowering plants lack this ability and thus, have found it difficult to invade the oceans.
Flowering plants depends on insect-pollinators for fertilization. However, these insect are not found in the oceans, and as such, it is difficult for flowering plants to invade the oceans.
Well-adapted seaweeds and grasses serve as competitors for any invading flowering plant. Since the flowering plants are not yet adapted for life in marine habitats, they lose out in this competition.
The oceans are constantly in a state of frequent turbulence and change due to tides and currents. Also, the temperature of the oceans are very low and fluctuations in the temperatures of the ocean do occur, utimately serving as obstacles to invading flowering plants to adapt to life in the oceans and seas.
What is the main protein in bone
Answer:
Collagen
Explanation:
A group of similar organisms that can meet with each other in produce fertile offspring is a
Answer:
A species is the answer :)
female male or other
PLS HELP ME
What is the % phenotype for this cross if round is the dominant trait?
A. 25% round, 75% wrinkled
B. 50% round, 50% wrinkled
C. 75% round, 25% wrinkled
D. 100%, round, 0% wrinkled
Answer:
100% Heterozygous Dominant (Rr)
Hope this helps!
10. Most cells are microscopic. Very few, like the eggs we eat, are visible to the unaided eye. Why have cells evolved to be small versus very large structures visible to the human eye
Answer: Efficient functioning.
Explanation:
Cells require a lot of substances to both come into and leave the cell in order for the cell to accomplish it's functions. These substances can be anything from carbohydrates to water and they come into the cell through diffusion and osmosis.
The thing about diffusion however, is that it happens faster over shorter distances than longer distances. This is why cells are so small. They evolved to be that size to ensure that diffusion of these substances takes place relatively quickly so that they can use these substances to carry out their functions at a faster rate.
Viruses and bacteria can infect human cells. Bacteria are living organisms, while viruses are not. How do you think the treatment for viral and bacterial illnesses differ? How do you think they affect healthy body cells? Explain your response.
Bacteria cause bacterial infections. Viruses cause viral infections. Antibiotic medicines kill or keep many bacteria from growing but don't treat viruses.
What is a virus?
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.
The virus works by damaging the wall and the lining of the alveolus and capillaries. The debris from the damage, which is plasma protein accumulates on the alveolus wall and thickens the lining. As the walls' thicken, the transfer of oxygen to the red blood cells is impaired.
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Which of the following is not a contribution of Gregor Mendel to the field of genetics?
A. Discovering Natural Selection
B.Identifying dominant and recessive traits
C. Making genetic predictions
Answer:
its c
Explanation:
In guinea pigs, the color of the fur is determined by a single gene with two alleles control. The brown allele (B) is dominant over the white allele (b). Two heterozygous guinea pigs are crossed. Draw a genetic diagram with the genotypic, phenotypic and ratio information of the P₁ and F ₁ generations of this cross.
Answer:
See
Explanation:
Given:
Brown allele (B) is dominant over the white allele (b).
It will be assumed that the alleles are not related to the X and Y chromosomes.
See attached diagram for details of the general case (for both homo-zygous and hetero-zygous parents)
For both parents hetero-zygous,
P1:
Genotype: Bb (100%)
Phenotype: brown (100%)
F1:
Genotypes : BB, Bb, bB and bb in equal proportions, i.e.
BB (25%), Bb (50%), bb (25%)
Phenotypes: 75% brown (from BB and Bb), 25% white (from bb)
What impact Can land use and land zoning have on soil fertility, and subsequently on food production?
Answer:
The main consequences of inappropriate land use changes are land degradation and soil quality deterioration through loss of vegetative cover, top soil moisture, infiltration capacity, water storage, soil organic matter, fertility, resilience, natural regeneration capacity, and a lower water table, factors that are ...
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Which organism is most abundant in the Terrestrial food chain
A child is born with hemophilia (inherited as an X-linked recessive) and Klinefelter's syndrome to parents who both have normal blood clotting. In which parent (mother or father) and during which round of meiosis (I or II) did the nondisjunction event occur
Answer:
mother
Explanation:
Hemophilia is a sex-linked recessive disorder caused by a mutation in one of the genes responsible for encoding the clotting factor proteins (factor VIII or factor IX), which are located on the X chromosome. Moreover, the Klinefelter syndrome is caused by men having an additional X chromosome. In this case, the nondisjunction occurred from the mother because her gamete included an extra X, it is for that reason that all genes localized on the X chromosome, including the defective gene involved in hemophilia, can cause all of her sons to be affected by the disease in some generation. Thus, sister chromatids did not separate during meiosis (Anaphase II) and caused two copies of the defective allele for the hemophilia trait.
he conversion process where nitrogen gas combines with hydrogen to form ammonium ions, which is accomplished through the intense energy of lightening, or when air in the top layer of soil comes into contact with certain bacteria, is known as
Answer: The conversation process where nitrogen gas combines with hydrogen to form ammonium ions is known as THE ACTION OF THUNDERSTORMS while when air in the top layer of soil comes into contact with certain bacteria, nitrogen in the air is converted by NITROGEN- FIXING MICROORGANISMS.
Explanation:
About 79% of air is composed of gaseous nitrogen. However, only a few microorganism can make use of this nitrogen. The important sources of nitrogen for plants and most living organisms are the inorganic nitrogenous compounds in soil. In nature, nitrogen is constantly being removed from the soil and returned to it through the NITROGEN CYCLE
Conversation of gaseous Nitrogen into nitrogenous substances such as ammonium and amino-compouds are carried out by:
--> The action of thunderstorms, and
--> NITROGEN- fixing microorganisms.
During thunderstorms, Nitrogen reacts with oxygen to form nitric oxide. The nitric oxide is oxidizes to Nitrogen peroxide which dissolves in rainwater to form nitric and nitrous acid. When these acids enter the soil, they combine with mineral salts to form nitrates. The nitrates then, dissolve in soil water and are absorbed by the plants. These nitrates are converted into plant proteins and become part of the plant body.
Some microorganisms such as the Nitrogen fixing microorganisms are able to absorb nitrogen from the atmosphere and change it into amino-compouds and proteins. Examples of such microorganisms include:
--> the free living bacteria: these include the azotobacter and clostridium
--> the symbiotic bacteria: the rhizobium which is found in the root nodules of leguminous plants
A field biologist can measure the slope of an area by using? A. flow meter B. theodolite C. data logger D. scalpels
Answer:
Flow metre can measure the slope of an area
Answer:
A
Explanation:
flow meter is field biologist
Changes in ecosystems are most pronounced when humans remove which species?
Answer:
Of course predators consume prey, but in doing so, they may have broader impacts on communities as a whole. That is to say, predators help to maintain a balance among organisms, both by consuming prey and by altering prey behavior and prey habitat selection. This article describes how predators influence the composition and distribution of species in communities.
Explanation:
A car accelerates from 4 meters/seconds to 16 meters/second in 4 seconds.The car’s acceleration is blank meter/second2
Answer:
3m/s²
Explanation:
a = v - u/t
Where;
a = acceleration (m/s²)
v = final velocity (m/s)
u = initial velocity (m/s)
t = time (s)
According to this question, a car is said to accelerate from 4 m/s to 16m/s in 4 seconds. This means that;
v = 16m/s
u = 4m/s
t = 4s
a = 16 - 4/4
a = 12/4
a = 3m/s²
Based on your understanding of nucleic acids, what type of bonds form between the CRISPR/guide RNA molecule and the target DNA
Answer:
The single guide RNA forms hydrogen bonds with DNA, while Cas9 hydrolyzes phosphodiester bonds
Explanation:
The base pairing between nucleic acid strands (either DNA or RNA) is through hydrogen bonds between nucleotide bases. In DNA, Adenine always forms two hydrogen bonds with Thymine, while Guanine always forms three hydrogen bonds only with Cytosine. Moreover, adjacent nucleotides in the same strand are covalently linked by phosphodiester bonds (i.e., covalent bonds between the 5' phosphate group of one nucleotide and the 3'-OH group of another). The CRISPR/Cas9 genome editing systems make use of single-guide RNAs (sgRNAs) that interact with DNA through hydrogen bonds. These sgRNAs have perfect complementarity to the target DNAs in order to bind them. On the other hand, Cas9 is an enzyme that hydrolyzes phosphodiester bonds in both DNA strands very precisely and accurately by using a sgRNA complementary to a specific DNA sequence.
A ____ farm can be used to generate electricity. a. sheep c. wind b. wheat d. fish
Answer:
The answer is pretty much C. wind
What is a climatic table?
Answer:
A climate graph displays yearly temperature and precipitation statistics for a particular location. Temperature (oC) is measured using the numbers on the left hand side of the chart. The average temperature for each month is plotted on the graph with a red dot and the dots are then connected in a smooth, red line.
Using complete sentences:
Describe the difference(s) between local and global winds.
Explanation:
The term global winds refers to the six major wind belts that encircle the globe.
Local winds, however, are the winds, or breezes, that are stirred up by the temperatures and topographical features of a small region or area. This is especially true of coastal areas.
Gastrointestinal issues in a somatization disorder often lead to __________.
A.
symptoms in women that affect their menstrual cycle
B.
the inability to swallow or loss of voice
C.
other disorders if not treated appropriately
D.
unnecessary medical procedures and surgeries
Answer:
D. unnecessary medical procedures and surgeries
Explanation:
Got it right on edge2020, Somatoform Disorders {Pratice}
Somatization disorder is a condition where the patient presents physical ailments as gastrointestinal issues that can lead to unnecessary medical procedures and surgeries.
What is a somatization disorder?It is a chronic condition in which the person has physical ailments without an apparent medical cause.
Due to the difficulties in finding the origin of the problem, it can lead to unnecessary medical procedures and surgeries, in addition to the fact that diagnosis and treatment care usually falls on the somatic nervous system.
Therefore, we can conclude that somatization disorder is a condition where the patient presents physical ailments as gastrointestinal issues that can lead to unnecessary medical procedures and surgeries.
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Which word best describes the response the seedlings are shown?
Movement of the lithospheric plate
Answer:
Movement of the lithospheric plate
The movement of lithospheric plates is known as the plate tectonics, this was a theory before but now it is widely accepted as true and actually happening around the planet.
These movements in the lithospheric plates of the planet, is the reason why the planet looks like what it is today. The continents, countries and all land formations and underwater features are products of plate tectonics.
#CarryOnLearning
Answer:
Explanation:
Movement of the lithospheric plate is a major topic in the theory of plate tectonics. the motions of two plates against each other can cause subduction of plates, volcanoes to form and earthquakes to happen.
The superior opening of the pelvic brim is called the..?
pelvic outlet
pelvic inlet
false pelvis
lesser pelvis
pelvic crest
Answer:
Hello There!!
Explanation:
I believe the answer is pelvic inlet.
hope this helps,have a great day!!
~Pinky~
How do genetic scientists use dna to investigate homocide and determine ancestor connections?
Answer:
Actually there are plenty methods
such as proceeding,
genetic screening
PCR
fluorescence screen
electrophoresis
and after to compare the amino acid sequences and the DNA base triplets(codons) of the relevant samples.
if it matches well it concludes that they are closely related
if atleast a small % of similarity is visible they may/can conclude that there was a connection between them in the past(ancestor).
Answer:
They put it in sciednce machine thing
Explanation:
Imagine you are a plant breeder. Friends sent you two different varieties of a snapdragon flower; each have golden leaves rather than green leaves. (Wild-type snapdragon plants have green leaves.) A cross between the two different varieties of golden snapdragons always produces progeny that have green leaves. This is an example of:
Answer:
Complementation.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
A trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her. Some examples of traits in genetics are colorblindness, handedness, curly hair, height, complexion, weight, hair color, dimples, tongue-roll, etc.
Artificial selection is also known as selective breeding and it is a process that involves humans (breeders) selecting the animal or plant with desirable traits in order to reproduce favorable offspring having phenotypic traits.
Complementation can be defined as a relationship between two strains of a living organism both having distinct homo-zygous recessive mutations and results in the expression of a wild-type phenotype when crossed or mated.
In this scenario, there are two different varieties of a snapdragon flower having golden leaves rather than green leaves. Thus, crossing two different varieties of golden snapdragons would produce offsprings that have green leaves.
Hence, the above breeding is an example of complementation.
Dichotomous key practice: a key to insects
Please help !!!!!!!!!!
Answer:
Answer to 1 is a grasshopper (order Orthoptera)
Answer to 2 is a dragonfly (order Odonata)
Answer to 3 is a fly (order Diptera)
Answer to 4 is a bee (order Hymenoptera)
Answer to 5 is lady bug (order Coleoptera)
Answer to 6 is an aphid (order Hemiptera)
Answer to 7 is a butterfly (order Lepidoptera)
Hope this helped you.
Explanation:
Answer to 1: is a grasshopper (order Orthoptera). Orthopterans have a cylindrical body, with elongated hind legs and musculature adapted for jumping.
Answer to 2: is a dragonfly (order Odonata). Thise groups have minute antennae, two pairs of transparent membranous wings with many small veins, a long slender abdomen, extremely large eyes, an aquatic larval stage (nymph) with posterior tracheal gills.
What is dichotomous key?A dichotomous key is refer to as an important scientific tool which is used to identify different organisms, based the organism's observable traits. Dichotomous keys comprises of a series of statements with two choices in each step that will lead users to the correct identification.
Answer to 3: is a fly (order Diptera). This group are true flies, are a large and diverse group that includes midges, mosquitoes, and all manner of flies. Diptera literal means "two wings," the unifying characteristic of this group.
Answer to 4: is a bee (order Hymenoptera). This group have small to medium-sized insects, usually with four membranous wings and a narrow waist which sets off the abdomen from the thorax, or middle region of the body.
Answer to 5: is lady bug (order Coleoptera). This group have sheath-winged which is the hardened forewings (elytra) six legs and antennae.
Answer to 6 is an aphid (order Hemiptera). This group is called as true bugs and have forewings that are hardened at the base and membranous at the tips.
Answer to 7: is a butterfly (order Lepidoptera). This group are typical insects, in which they have 4 wings, 6 legs, 2 antennae. The body divided into 3 sections such as a head, thorax and abdomen. The leg and wings are attached to the thorax.
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utiliza el calor producido por un reactor nuclear
Answer:
Boil water into steam
Explanation:
As the turbine blades turn, they drive generators that make electricity. Nuclear plants cool the steam back into the water in a separate structure at the power plant called a cooling tower, or they use water from ponds, rivers, or the ocean. The cooled water is then reused to produce steam.
Which statement about the cells of organisms is accurate?
A. plants are unicellular organisms that have specialized function
B. all organisms are multicellular and carry out similar functions of life
C. The single cell of a unicellular organism carries out all functions of life
D. The single cell of a unicellular organism can have specialized functions
Answer:
B
Explanation:
Plants, fungi, and animals are multicellular organisms, so the answer is B.
Answer:
B
Explanation:
what is the thing that represents mitosis?
(and it has to be a living thing)
In plant cells, the first part of mitosis is the same as in animal cells. (Interphase, Prophase, Metaphase, Anaphase, Telophase). Then, where an animal cell would go through cytokineses, a plant cell simply creates a new cell plate in the middle, creating two new cells.
plant cells
¿A qué se refiere la sexualidad libre de coerción y violencia?
Para las mujeres y las niñas, el derecho a controlar su propio cuerpo y su sexualidad sin ningún tipo de discriminación, coerción o violencia es fundamental para su empoderamiento. Sin derechos sexuales, no pueden realizar sus derechos a la autodeterminación y la autonomía, ni pueden controlar otros aspectos de sus vidas. De hecho, son los intentos de controlar la sexualidad de las mujeres y las niñas los que dan como resultado muchos de los abusos de los derechos humanos que enfrentan a diario, incluida la violencia de género, el matrimonio forzado, la mutilación genital femenina y limitaciones en su movilidad, vestimenta y educación. , empleo y participación en la vida pública. Lo mismo ocurre con las lesbianas, los hombres gay, las personas bisexuales, las personas transgénero, las trabajadoras sexuales y otras personas que transgreden las normas sexuales y de género y que, como resultado, enfrentan un mayor riesgo de violencia, estigma y discriminación. Está claro: los derechos sexuales sustentan el disfrute de todos los demás derechos humanos y son un requisito previo para la igualdad y la justicia.
A nivel mundial, existe un gran debate sobre si definir los derechos sexuales y cómo hacerlo. IWHC cree que para superar algunas de las barreras políticas al reconocimiento, respeto, protección y cumplimiento de los derechos sexuales, necesitamos aclarar cuáles son.
IWHC, en colaboración con otras organizaciones líderes de derechos humanos y salud sexual, ha desarrollado la siguiente definición de trabajo de derechos sexuales:
Los derechos sexuales abarcan ciertos derechos humanos que ya están reconocidos en las leyes nacionales, documentos internacionales de derechos humanos y otros documentos de consenso. Se basan en el reconocimiento de que todas las personas tienen derecho, libres de coerción, violencia y discriminación de cualquier tipo, al más alto nivel posible de salud sexual; perseguir una vida sexual satisfactoria, segura y placentera; tener control y decidir libremente, y con el debido respeto a los derechos de los demás, sobre asuntos relacionados con su sexualidad, reproducción, orientación sexual, integridad corporal, elección de pareja e identidad de género; ya los servicios, educación e información, incluida la educación integral en sexualidad, necesarios para ello.