Answer:
A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not guesses, but reliable accounts of the real world.
Explanation:
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4. The top part A of the flask-shaped reproductive organ X in the flower of a plant secretes a surgery substance
into its lower part B which goes towards the bottom part of the flask-shaped organ. When a tiny grain D
coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long
tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask-
shaped organ to carry out fertilisation.
(a) What is (i) organ X, and (ii) organ Y, inside the flower ?
(b) Name parts (1) A (ii) B, and (iii) C, of flask-shaped organ.
(c) Name (i) grain D, and (ii) part E of organ Y.
(d) Name the tube F.
(e) What is the phenomenon of growing a long tube in response to a sugary substance in the process of
fertilisation in a flower known as ?
Answer:
X- pistil
Y- stamen
A-stigma
B-style
C-ovary
D- pollen grain
E- anther
F- pollen tube
You remove pus from a wound and try to identify the pathogen multiple ways. The multi-locus gene tree showed your organism was most closely related to Streptococcus pyogenes but the 16S tree said it was most closely related to Streptococcus pneumoniae. Describe why this might be the case and other ways you should try to identify this organism.
Answer:
It occurs because phylogenetic analyses based on the 16S rRNA gene sequences may have insufficient resolution for distinguishing between closely related species
Another genomic method for streptococcal identification is whole-genome analysis (WGS)
Explanation:
The phylogenetic analysis of the highly conserved 16S rRNA gene sequences has recently been used to distinguish between prokaryotic species. However, this gene sometimes may show low resolution to distinguish between closely related species, and it has been suggested potential horizontal transference of rRNA genes. Moreover, multi-locus sequence analysis (MLSA) has also been used to identify species. MLSA analysis consists of analyzing simultaneously different genes and this technique has shown to have a high capacity for establishing relationships between species within a genus or genera within a family. Finally, whole-genome analysis (WGS) is the most powerful tool for distinguishing between closely species. WGS is a technique that provides a very high resolution which is based on the analysis of large-scale genome sequencing data generated by next sequencing generation (NGS) technologies.
An energy pyramid is shown below. Which portion of the diagram represents the level with the least available energy?
Answer:
Explanation:
The top predator. This is because, when energy goes higher on the pyramid, ten percent is taken in by each animal, so less energy is left for each animal.
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:
A local ecosystem includes a variety of grasses that grow on spongy soil. In spring, heavy rainfall and melted snow cover the soil in a few inches
of water. The ecosystem dries up by late summer. What term BEST describes this ecosystem?
A. pond
B. estuary
C. wetland
D. stream bed
Answer:
The correct answer is C. Wetland.
Explanation:
A wetland is a generic name for habitats located between hard ground and open water. Wetlands include, for example, wet and waterlogged shallow land, shallow lakes and seas, marshes, floodplain forests, and flowing waters.
Wetlands provide a breeding ground for many animal and plant species and can act as a buffer in flood areas and prevent severe and sudden floods. Rainfall, waters entering the catchment area, soil and ground elevation differences in the area, and water evaporation form the hydrological conditions of the wetlands. Wetlands are one of the most valuable and endangered habitats on Earth. Swamps, overgrown lakes, flood-prone areas, shallow bays, water-covered beach areas and mangrove beaches are all endangered habitats.
what satellites are used to study expanses of the oceans surface
Answer:
The Geostationary Operational Environmental Satellite-16 (GOES-16) is the first of NOAA's next generation of geostationary weather satellites. Among the many missions of this satellite, it will collect ocean and climate data.
Explanation:
Using satellites, NOAA researchers closely study the ocean. Information gathered by satellites can tell us about ocean bathymetry, sea surface temperature, ocean color, coral reefs, and sea and lake ice. Scientists also use data collection systems on satellites to relay signals from transmitters on the ground to researchers in the field—used in applications such as measuring tidal heights and the migration of whales. Transmitters on satellites also relay position information from emergency beacons to help save lives when people are in distress on boats, airplanes, or in remote areas.
Answer:
A b c d?
Explanation:
45 / 10000 Word Limit Question 2 (b) The membranes of both B cells and the cancer cells are largely composed of phospholipids. Explain how, when the membranes are fused, the polar parts of the phospholipids from one cell will interact with the phospholipids from the other cell and how the nonpolar parts of the phospholipids from one cell will interact with the phospholipids from the other cell.
Answer:
Hydrophobic tails interact among themselves, while polar (hydrophilic) heads interact with water
Explanation:
In the first place, the polar heads of the phospholipids localized on the membrane surface interact with surrounding water molecules that also surround other cell phospholipids. Second, the non-polar tails of the phospholipids from one cell interact with molecules that repel water in the other cell phospholipid. Consequently, it forms a bilayer structure composed of two sheets of phospholipids where hydrophobic tails are arranged on the inside of the membrane, thereby allowing the interaction tail-to-tail among different cell membranes, while the polar heads of the disrupted phospholipid membranes interact together with the surrounding water.
According to the text, what does the United States use the Fahrenheit scale to measure?
air temperature
low-pressure systems
high-pressure systems
humidity
Answer:
Low pressure systems
Explanation:
Because Fahrenheit numbers are high
In the negative feedback mechanism for hypotension, decreased urine volume would:
Question 33 options:
increase blood pressure
decrease blood pressure
have no effect on blood pressure
In the negative feedback mechanism for hypertension, increased urine volume would:
Question 39 options:
have no effect on blood pressure
increase blood pressure
decrease blood pressure
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
A tide pool is a puddle of seawater left in the rocks when the tide goes out. Tide pools are often full of life. Which group includes only abiotic factors from the tide pool habitat?
a. sea plants, rock, sand, air
b. sea stars, anemones, sea plants
c. rocks, sand, water, air, salt
d. water, air, anemones, sand
Answer:
D
Explanation:
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Which of the following results in folded mountains
Answer:
Fold mountain are created where two or more of Earth tectonic plates are pushed together .
Explanation:
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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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Fats are the predominant forms of a class of biological molecules called _______, which also includes fatty acids and steroids, among other molecules. These biomolecules readily dissolve in _______ solvents such as hexane and chloroform. Because of their insolubility in water, fats and other biomolecules in this class are said to be_______. Triacylglycerols, also known as triglycerides, are a storage form of fat found in adipose tissue that consist of glycerol bound to_______. These fats are categorized based on the bonding of the carbon atoms in the chain. Fats that contain chains with no double bonds are classified as_______ , whereas those that contain double bonds in the carbon chain are _______.
Answer:
1. Lipids
2. Non-polar
3. Non-polar
4. Fatty acids
5. Saturated fats
6. Unsaturated fats
Explanation:
LIPIDS are one of the four major biomolecules in living systems. A form of lipids are fats which constitute most lipids i.e. predominant. Lipids also includes fatty acids, steroids and other molecules.
Lipid biomolecules readily dissolve in POLAR solvents such as hexane and chloroform. Because of their insolubility in water (polar solvent), fats and other biomolecules in this class are said to be NON-POLAR.
Triacylglycerols, also known as triglycerides, are forms of fat that is composed of a glycerol molecule bound to three molecules of FATTY ACIDS.
Based on the bonding of the carbon atoms in the chain, fats that contain chains with no double bonds are classified SATURATED FATS, while those that contain double bonds in the carbon chain are UNSATURATED FATS.
What enables neighboring water molecules to hydrogen bond with eachother
Answer:
Hydrogen bond
Explanation:
The covalent bonds between the oxygen and the hydrogen atoms result from a sharing of the electrons. This is what holds the water molecules themselves together. The hydrogen bond is the chemical bond between the water molecules that holds the mass of molecules together.hope the answer was helpful, mention me as brainliest.what is the scientific name for powdered pepper
Answer:
Capsicum
or
Tracheophyte
Explanation:
The scientific name of powdered pepper is Capsicum annuum . For a pepper plant to grow , it takes approximately 3 to 4 years . These pepper are very useful to us for many purposes . They help in good digestion of food whenever a person is going through ingestion .
There are many reasons why all humans do not perceive sounds similarly in our environment, including adaptation, hearing loss and/or deafness.
For 2A-2D, first determine whether the scenario is an example of sensory adaptation, conduction deafness, sensorineural deafness, and/or central deafness.
Second, for the scenarios that are examples of deafness, explain briefly how the scenario leads to deafness (i.e., how does the scenario alter normal auditory processing). If you have selected sensory adaptation as an answer, explain briefly why the scenario does not fall under the categorization of deafness. Use your own words to briefly explain - simply listing definitions is not sufficient. (2.5 points each for matching, 5 points each for correct justification)
2A. Listening to excessive loud noises everyday over years that causes loss of stereocilia
2B. Hearing construction outside when it first begins, but no longer noticing the sound minutes later
2C. Difficulty understanding speech, but no damage to ears or ability to understand nonverbal sounds
2D. A hole in the tympanic membrane caused by an ear infection
Answer: 2A Sensorineural deafness
2B Sensory adaptation
2C Central deafness
2D Conductive deafness
Explanation: The human ear is divided into 3 parts:
Outer Ear: auricle, ear canal and tympanic membrane;Middle Ear: eardrum, tympanic cavity and ossicles (malleus, incus and stapes);Inner Ear: oval window, semicircular ducts (attached to cochlea and nerves), cochlea and auditory tube;The Sensorineural deafness is a type of deafness caused by a damage in the inner ear, either the cochlea or the auditory nerve. It can happen because of medicine toxicity, exposure to noise along the years etc.
So, from the scenarios above, 2A is consistent with sensorineural deafness since stereocilia are hair cells of inner ear.
Sensory adaptation is a phenomenom that happens when an individual's sensory receptors is exposed to a stimuli for a prolonged period of time. For example, the situation described in 2B. It is not considered deafness because it is not caused by a damage in any part of the ear.
Central deafness is a very rare case of deafness. The damage in this type of deafness is in the brain and not in any of the 3 parts of the ear. That's why the scenario in 2C is the example of this.
Conductive deafness is the second most common type of ear problem and it occurs in the outer ear. One of the causes is blockage in the ear canal by the ear wax, external bodies, osteomas (bone growth) or otitis (oute ear infection). An example of this type of deafness is scenario 2D.
A series of two point crosses is carried out between genes for brown eyes (bw), and arc wings (a), vestigial wings (vg) , ebony body color (e), and curved wings (cv). The following number of nonrecombinant (NR) and recombinant progeny (R) were obtained from each cross.
Genes in cross Progeny (NR) Progeny (R)
a,bw 2224 117
a,cv 2609 823
a,e 3200 3200
a,vg 5172 2379
bw,cv 4614 1706
bw,e 4150 4150
bw,vg 2796 1434
cv,e 3116 3116
cv,vg 2102 305
vg,e 4559 4559
Required:
Using these data form two-point crosses, create a genetic map for these genes, providing the order of the genes and your best estimates of the distances between them.
Answer:
Order of genes: Vg---cv--a---bw---e
Distances among linked genes:
a/bw distance is 4.99 MU bw/cv distance is 26.99 MU a/cv distance is 23.98. a/vg distance is 31.5 MU bw/vg distance is 33.9 MU cv/vg distance is 12.62 MUGene e assorts independently. Its location is symbolical, meaning that it might be in the same chromosome but far away from the rest of the genes, or it might be located in another chromosome.
Explanation:
Due to technical problems, you will find the complete answer in the attached file
What amino acid residue would MOST likely be buried in the interior of a water-soluble globular protein?
The group of choices associated with the question is:
Tyr-Phe-Glu-Asn-Leu
Met-Phe-Pro-Ile-Leu
Val-Ala-Val-Glu-Val
Glu-Asn-Ser-Thr-Gln
Answer:
The correct answer is - Met-Phe-Pro-Ile-Leu
Explanation:
There is various type of amino acid residues that are located in the water-soluble globular protein, depend on the location inside the globular protein, that could be the center of the particular protein or interior of the protein.
Met-Phe-Pro-Ile-Leu is the amino acid residue among given options is the most likely the sequence as all the amino acids are nonpolar in this residue.
Thus, the correct answer is - Met-Phe-Pro-Ile-Leu
The amino acids that would be buried will be Met-Phe-Pro-Ile-Leu.
Amino acids simply refer to the organic compounds that contain amino and carboxylate functional groups. They're the molecules that combine in order to form proteins.
From the complete information, it should be noted that globular proteins are folded in such a way that their tertiary structure consists of hydrophilic, amino acids, arranged on the outside. From the options given, the amino acids that would be buried in the interior of a water-soluble globular protein will be Met-Phe-Pro-Ile-Leu.
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1. What groups listed below have true cell walls?
A. algae
B. mycoplasmas
C. Gram-positive bacteria
D. fungi
E. protozoans
Answer:
D. Fungi
Explanation:
The fungal cell walls are made of complex & flexible structure that is made of glycoproteins, pigments chitin and α- and β- linked glucans
Chrysanthemum pests and diseases include leaf miners, _____, powdery mildew and leaf spot
Answer:
aphids
Explanation:
it just is trust me
15. (02.05 LC) What evidence suggests that global climate change is causing the oceans to get warmer? (3 points) A. Decreased air temperatures B. Decreased storm strength C. Increased sea levels D. Increased surface ice
Answer:c
Explanation:
Please somebody help me !
Answer:
Water molecule, Glucose molecule,Cell, Chloroplast, Leaf
Explanation:
Answer:
Chloroplast
Cell
Water molecule
Glucose molecule
Leaf
Explanation:
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Does a parrot eat a grasshopper?
Match each terms with their definitions
describe the relationship between CO2 in the seawater and the pH of the seawater
Answer:
As the amounts CO^2 in the sea increase, it causes the acidity of the pH increase as a result
Explanation:
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If bacteria do not contain a nucleus will bacteria still have DNA?
Of course not the DNA is found in two basic forms: a chromosomal loop and ring-like plasmids. The chromosomal loop is literally a looping string of DNA. Since there is no true nucleus in a prokaryotic cell, the DNA is suspended in cytoplasm, or the fluid filling the cell.
amino acid structure: the only part of the amino acid structure that varies between the amino acids and makes each type unique is
Answer:
The side groups are what make each amino acid different from the others. Of the 20 side groups used to make proteins, there are two main groups: polar and non-polar. These names refer to the way the side groups, sometimes called "R" groups, interact with the environment.
Explanation:
Identify the cellular structures where photosynthesis occurs.
Answer:
Chloroplasts
Explanation:
What is meant by the concept of development?
Answer:
A process that creates growth, progress, positive change or the addition of physical, economic, environmental, social and demographic components.