Answer:
a
Explanation:
Life forms that existed during the Cambrian period are the conclusions about Paradoxides pinus, hence option A is correct.
What is a Cambrian period?The Cambrian period is the period when most of the life forms on the earth explode to the different types of animals and plants, in this period most of the separate families of this species are evolving rapidly.
The species occur in this period in which Paradoxides pinus also appears, it was supposed to be a trilobite that lived during the mid-Cambrian.
Paradoxides pinus has a semicircular and elongated body shape, it is hard from the outside due to the exoskeleton, but the inside is soft making it boneless.
Therefore, in the Cambrian period life forms, which are the conclusions about Paradoxides pinus.
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help asap giving branlist
Answer:
symbiotic relationship
Explanation:
What kingdom contains organisms that are multicellular, heterotrophic, eukaryotic, and lack cell
walls?
Answer:
Kingdom Animalia contains organisms that are multicellular , heterotrophic, eukaryotic and lacks the cell wall.
Explanation:
The reason for above answer is:
kingdom animalia are multicellular organism aa they are composed of various cells.they don't prepare food by themselves which makes them heterotrophic in nature.they have enclosed nucleus in cell which makes them eukaryotic in nature.their cell lacks the cell wall.Hope it helps...
Answer: Kingdom Animalia
Explanation:
If each NADH generates "3 ATP" molecules and each FADH2 generates 2 ATP molecules, calculate the number of ATP molecules generated from one saturated 18 ‑carbon fatty acid.
Answer:
90 ATP
Explanation:
Every acetyl-CoA yields 3 NADH and 1 FADH2
18 carbon fatty acid is known to have 9 Acetyl CoA.
1 acetyl CoA produces a total of 10ATP.
Since the 18 carbon fatty acid has a total of 9 Acetyl CoA then the total number of ATP produced is 9* 10 which results in 90 ATP being formed when it passes through the various reaction mechanisms.
What is the morphology of Homo erectus, brain size, body size, and cranial shape?
Answer:
Explanation:
Homo erectus existed about 200 million yeas ago as one of the early man to occupy the old world. Homo erectus are said to be the direct ancestors of other homos. The brain size of homo is population dependent and it ranges from 546–1, 251 cc (33.3–76.3 cu in). The maximum size of the brain was achieved early in their life to
this is similar to childhood in modern human.
Body size ranged widely from 146–185 cm which is about 4 feet 9 inches –6 feet 1 inch in height and 40–68 kg in weight.
Homo erectus have a flat skull that is low. The face is also flat compare to modern humans with brow ridge.
Sophie is preparing a qualitative research plan for her study that explores the stories of young cancer survivors. Of the following, which is Sophie likely to include in her plan?
Answer:
A section that demonstrates the relevance of the study.
Explanation:
A Qualitative research plan, as the name suggests, lays emphasis on conducting a standard study that offers authentic and reliable claims or conclusions. It does not rely on a single source for information but includes different data sources and fieldnotes like interviews, questionnaires, audio or video conversations, etc. carried out in real-life settings by the researcher. All such data is reviewed, organized, and then a claim is made on these bases.
As per the question, If Sophie is willing to research more regarding the young survivors' story of battling cancer, she must produce a section that could illustrate the significance of this study as this helps establish the credibility of her idea as well as her study. This could further be substantiated through the inclusion of interviews of patients and doctors by exemplifying how it helps in reaching more significant conclusions.
help asap plss giving branlist
Answer:
Parasitic Relationship
Explanation:
Symbiotic relationship:
is a term that defines an interaction between organisms of different organisms.
Parasitic Relationship:
A relationship in which one organism is benefited and one is not.
Example: A tapeworm living at the gastrointestinal parts.
Mutualistic Relationship:
A relationship in which both organisms benefit.
Example: Egyptian plover bird and the crocodile.
Commensal Relationship:
A relationship in which both organisms are not benefited nor harmed.
Hope this helps ;) ❤❤❤
name the disease caused by a species clostridium?
Answer:
The disease is tetanus and the species that causes it is Clostridium tetani
Explanation:
Clostridium is a gram negative bacteria found in different types of environment including our surroundings and in the digestive tract of organisms such as animals and man.
Clostridium however has different species which are causative organisms of a range of diseases such as tetanus and botulism.
Tetanus is an example of a disease caused by the species called Clostridium tetani
(4.06 MC)Which statement best compares coastal ecosystems to open ocean ecosystems? a. Coastal ecosystems include abyssopelagic depths, and open ocean ecosystems do not. b. Coastal ecosystems have less sunlight, fewer nutrients, and less diversity than open ocean ecosystems. c. Coastal ecosystems have a greater range of water pressures than open ocean ecosystems. d. Coastal ecosystems have more sunlight, more nutrients, and higher levels of productivity than open ocean ecosystems.
Answer:
D
Explanation:
Answer:
D.Coastal ecosystems have more sunlight, more nutrients, and higher levels of productivity than open ocean ecosystems.
Explanation:
which term describes a female arctic fox
Answer:
organism
Explanation:
Answer:
organism
Explanation:
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Groups of genes coding for related proteins in _ are arranged in operons Bacteria Plants Protests None of the above
Answer:
Bacteria
Explanation:
Operons are the genetic regulatory system that is found in bacteria. Operons are group of genes coding for related proteins in bacteria.
Operon are consists of structural genes and regulating elements that includes operator and promoter. This feature of operons in bacteria allows protein synthesis according to the need of cell.
Hence, the correct answer is bacteria.
What process occurs as a zygote becomes a blastocyst?
Answer:
The Answer is B.
Explanation:
The process by which a zygote becomes a blastocyst is cleavage division.Thus, option "B" is correct.
What is fertilization and example?A method of reproduction that entagled the union of male and female germ cell (each with a single, haploid set of chromosomes) to create a diploid cell called zygote.
Thus, option "B" is correct, A group of blastomeres produced by cleavage divisions is known as pre-embryo.
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Identify compounds that are required for the electron transport chain and compounds that are produced by the electron transport chain.
a. ATP
b. NADH
c. O2
d.NAD+
e. H2O
f. ADP
g. FAD
h. FADH2
Answer:
Compounds needed for electron Transport chain are;
NADH
FADH2
NAD+
FAD
O2
H2o
Compounds that are produced are
ADP
ATP
Explanation:
Electron transport chain is a biological process that produced ATP in the body cells which entails building proton motive force that produce ATP.
The main electron transport chain electron donors are succinate and nicotinamide adenine dinucleotide hydrate (NADH).
nicotinamide adenine dinucleotide (NAD+) fuse with a proton to form NADH at the mitochondrial matrix.
flavin adenine dinucleotide (FADH2) plays a similar role as an electron donor.
Molecules such as pyruvate and succinate release energy when they are burned in the oxygen. This oxygen is later reduced to water.
The precursors of ATP, adenosine diphosphate (ADP) and inorganic phosphate (Pi) are transported nto the mitochondrial matrix which later bond to form ATP.
Compounds required for the electron transport chain are NADH, oxygen, and FADH2. Compounds produced by the electron transport chain are ATP, water, [tex]NAD^+[/tex], and ADP.
NADH, oxygen, and FADH2 are substances needed for the electron transport chain (ETC). High-energy electrons are provided to the ETC by the electron carriers NADH and FADH2.
Then, a sequence of protein complexes enmeshed in the inner mitochondrial membrane transfer these electrons. Oxygen serves as the last electron acceptor, resulting in the formation of water.
A proton gradient is produced by the pumping of protons ([tex]H^+[/tex]) across the membrane as the electrons pass through the ETC and release energy in the process.
The ATP synthase enzyme is propelled by this gradient to produce ATP from ADP and inorganic phosphate (Pi).
Thus, the ETC creates the molecules ATP, water, NAD+, and ADP, all of which are crucial for cellular energy production and preserving the electron balance during cellular respiration.
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which structure is most necessary for a mitochondrion to produce new molecules
Answer:
The Nucleus.Explanation:
The structure most necessary for a mitochondria to produce new cells is the nucleus.
The nucleus is a very specialized structure that occurs in most cells including the mitochondria.
It is a membrane bound organelle that contains genetic materials which is the DNA of all eukaryotic organisms(multicellular organisms)
It plays important functions such as:
1. Primarily an information center of the cell
2.Metabolism roles
3. Growth and production of new molecules in the mitochondria(mitochondrial bio-genesis).
Question 8 (5 points)
A molecule will become an ion when which of the follow happens
Answer:
An atom is known to become an Ion when it undergoes a chemical reaction. This is become chemical reactions occur as a result of loss or gain of electrons.
When this occurs the atom is said to become an ion.
When am atom gains electrons it becomes negatively charged and is referred to as an anion while when it loses electrons it becomes positively charged and is referred to as a cation.
Answer:
When it loses or gains an electron.
Explanation:
A molecule becomes an ion when it loses or gains an electron. Gaining or losing a molecule of ATP doesn’t make a molecule an ion, and it doesn’t matter whether the molecule is in a hypertonic or hypotonic solution. Moving through a semipermeable membrane isn’t a contributing factor to a molecule becoming an ion.
1. Are most invasive (exotic) species K-selected or r-selected species? Explain your choice and why that makes sense in terms of their ecological success.
Answer:
The correct answer is "r-selected species".
Explanation:
The terms "k-selected" and "r-selected" species are used to describe two different type of evolutionary strategies. K-selected species are those who have few offspring that are well adapted to its environment and require a lot of resources to growth and survive. On the other hand, r-selected species have a large number of offspring, which not require living on stable conditions and can survive with few resources. The most invasive species are r-selected, since they reproduce very quickly and can adapt to survive to very different ecological conditions.
Which of the following actions involves voluntary muscle movement?
Answer:
what are the options?
Explanation:
Voluntary muscles require a lot more energy than involuntary muscles and remain relaxed when you're not moving, such as when you're asleep.
A scientist is observing cells undergoing division and identifies a cell that contains 15 pairs of homologous chromosomes. However, a new technique allows the scientist to determine that several of the chromosomes have exchanged pieces of genetic material with their homolog. The scientist now knows that which of the following is true?
A. The cell is in mitosis and has just completed crossing over
B. The cell is in meiosis II and is ready to complete the second division over
C. The cell is in meiosis and has just undergone crossing
D. The cell is in late anaphase of mitosis
Answer:
B. The cell is in meiosis II and is ready to complete the second division over.
Explanation:
Hope it helps.
The volume of a right circular cylinder can be approximated as follows:
Volume = πr2h;
where r is the radius of the cylinder and h is the height of the cylinder;
π is a constant that is roughly equal to 3.
Using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters.
A.
2,916 m3
B.
14 m3
C.
108 m3
D.
324 m3
The correct answer is A.2,916 m3.
What is circular cylinder?A circular cylinder is a three-dimensional geometric shape that consists of two parallel circular bases and a curved lateral surface that connects the two bases. The shape of a circular cylinder resembles a can or a pipe, and it is a common shape in everyday objects and engineering applications.
To calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters, we need to plug in the given values into the formula: Volume = πr2h. Since π is a constant that is roughly equal to 3, we can use 3 in place of π.
Therefore, the volume of the cylinder is equal to 3 x (2 meters)2 x (9 meters), which is equal to 2,916 m3.
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QUESTION 31 Chipmunk mitochondrial DNA was fingerprinted using the single primer amplified region technique (SPAR) and the PCR reaction. One four base primer was used. If the DNA from chipmunk mitochondria is a circlular piece of DNA about 16000 base pairs long, how many fragments should be produced by this technique
Answer:
It depends on the size of the amplified DNA fragments (for example for SPAR markers consisting of 200 bp in length >> 1600 / 200 = 8)
Explanation:
The PCR based single primer amplification reaction (SPAR) methods are tools for detecting genetic diversity by using DNA markers such as Simple Sequence Repeats (ISSRs), Minisatellite DNA regions (DAMDs) and Random Amplified Polymorphic DNAs (RAPDs), which can be used alone or combined with each other. In the last years, the SPAR methods have gained attention in the scientific community because they are cost-effective and highly effective for the detection of both intraspecific and interspecific genetic variation. In the SPAR methods, the size of the bands will depend on the length of the amplified DNA fragments.
Coal and petroleum products (fossil fuels) are a powerful resource of ___________ and energy. Following _________ plants and animals are buried and "stored" underground for millions of years leading to the formation of these byproducts.
Answer:
Carbon AND
DEATH
Explanation:
Carbon containing organic molecules derived from the remains of dead plants and animals on the earth million of years ago, buried deep under the sediment and rock layers are called Fossil fuels. Coal,oil,and natural gas are examples.
These underground deposits were formed million of years ago,due to the chemical reactions between relatively underground water molecules on one hand,and the earliest mic organisms viz algae,bacteria which inhabited the earth other hand.These decomposition occurred around 540 to 65milion years ago.
However,some million of later chemical reactions in the soil leads to compression of these remains underground.The degradation leads to formation of the fossil fuel precursor called Kerogen. With time Geothermal heat transforms the kerogen precursor to fossil fuel. some other kerogens are transformed to other natural gas,coal etc.
What are striations, and how do they form?
Answer:
Striations or striae are scratches or small elongated grooves in bedrock or on clasts that are the product of abrasion . Clasts protruding out of basal sliding ice are dragged along bedrock surfaces producing the marks. The rate of abrasion depends on the effective force with which individual clast fragments are pressed against the bed, the flux of fragments over the bed, and the relative hardness of rocks in the ice and of the bed (Hallet, 1979). Hallet (1979) also noted that where geothermal heat flow or frictional heating are high, or where the ice is extending, the rate of abrasion should be higher. He also noted that glacier thickness has no affect on abrasion, and hence on the nature of striation morphology.
Explanation:The presence of striations is a reflection of the spatial and temporal variations in the stresses exerted by rock fragments entrained in basal ice, as well as a representation of glacier sliding (e.g., Boulton, 1974; Kamb et al., 1976; Hallet, 1979, 1981; Shoemaker, 1988; Iverson, 1991). The greater the stresses exerted, the greater the promotion of crack growth and brittle failure, and the deeper and wider the striae tend to be (Drewry, 1986).
What does environmental quality refer to? Environmental quality refers to the quality of the total environment, including both the natural and the environment.
Answer:
True,
An animal requires, Food, Water, Shelter as basics of life - but I add a third, for social animals; a Mate, Young, or Flock/Herd/Group
Eukaryotic cells are substantially larger than bacterial cells and average over 20 times more volume-per-surface-area than bacterial cells. How can the eukaryotic cell membrane provide this higher rate of exchange of materials
Answer:
it maintains this because of more exchange points on the cell with more surface area comes more ports of entry and exit for materials rather a simple concept
Explanation:
why would measuring just root mass not be a totally accurate way of measuring the effect of fertilizer on root growth
Answer:
Fertilizers affect the root growth in several ways such as:
Provide muti-nutritionsProvide more mineral nutritionSlow release of nutrients in soilRapid growth of plant rootRoot mass of root is the measurement of growth in length and weight of the roots.
So, the effect of fertilizer is not limited to the growth in length and weight, there are several nutritional changes in roots which are also important for the measurement of effect of fertlisers on root growth.
Answer:
The correct answer is - there are several other factors that affect the growth of the roots other than fertilizers.
Explanation:
Measuring the root mass only is not a correct or accurate way of measuring of the effect of the fertilizers on root growth as it is not the only factor that affect growth of the roots.
The factors that have significant effect on growth of roots of the plant are environmental conditions that are present in the root zone such as gas exchange, Water, Space, Carbohydrates, Non-limiting Temperature, Minerals, Microbial Associations and Low Soil Density.
Thus, the correct answer is - there are several other factors that affect the growth of the roots other than fertilizers.
A mutation causes a sequence of DNA that has the nucleotides TTG to be changed to TCG. The resulting protein has a different sequence of amino acids. Which type of mutation is this?
Answer:
subtitution mutation
Explanation:
The T in the middle is subtituted with C.
Hope it helps.
Answer:
The answer is A, missense.
Explanation:
Nancy is a new dental assistant in your office, and she just finished manually processing some dental radiographs. When you look at the films, you notice that they are very light. You exposed the films, so you are certain that the exposure factors were correct. What could have gone wrong?
Answer:
Nancy put them in developer for a short time, that is to say that the image was very clear and even though I later washed them and ran them through the fixing solution they no longer had a solution
Explanation:
The development of dental radiographs has three stages:
The first is to place the radiograph in developer, the second to wash it in water and the third to fix the image and define it with fixative.
The developer is in charge of giving the contrast to the radiographic image and the radiopaque-radiolucent colors, if the radiographic plate lasts less time or the developer is altered due to misuse / maintenance, it will not look correctly and will have a dim image appearance.
Knowing the epidemiology and causative agent of Legionaries disease what questions would you ask of the victims or of their surviving relatives?
Answer:
Answered below
Explanation:
Legionnaires disease is a type of lung inflammatory disease or pneumonia, which is caused by infection from the bacteria Legionella bacterium.
Legionella bacterium can be spread by inhalation from water or soil. People with weakened immune systems are most susceptible as are smokers. Untreated legionnaires disease can progress to a fatality.
Some of the questions to ask of a victim or of surviving relatives include;
1) Any visits to swimming pools?
2) Source of drinking water?
3)Any visits to fountains?
4) Contacts with victims and their personal belongings?
5)Is any relative or victim immunocompromised? Do they have diseases that might lower their immune response?
6) Are they smokers?
list the uses of gibberelin
snap id is in my bio
Answer:
A group of plant hormones, which are accountable for growth and development is gibberellins. These hormones play an essential part in the initiation of seed germination. A lesser quantity, these hormones can play an essential function in elevating the speed of germination, and they instigate cell elongation so that the plants grow taller. The following are the essential uses of gibberellins:
1. Promote flowering
2. End seed dormancy
3. Increase the size of the fruit.
For the seeds to germinate, there is a need for seed dormancy to end, and this can be done with the use of gibberellins. The hormone also promotes the process of flowering, which helps in the production of more fascinating and larger specimens of flowers.
The flowering process also influences the rate of the growth of fruits. Gibberellins are also used in the generation of seedless fruits. The spraying of the hormone helps to enhance the size of the fruit.
What would happen to a bacterial cell if its protective covering was destroyed? It would be better protected from the outside environment. It would be able to take in materials more easily. It would be harmed by chemicals in the environment. It would reproduce more slowly.
Answer:
it would be harmed by chemicals in the environmenti
If a bacterial cell's protective covering was destroyed - It would be harmed by chemicals in the environment.
The cell wall of bacteriaThe cell wall is a outer layer that surrounds the cell membrane and protects bacteria. It is serve as a protective barrier between inner membrane and external environment.
It is essential for maintenance of cell shape and structure as well as the prevent it from harmfull chemicals present in the environement.
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A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in
the laboratory
Which statement best provides evidence that the substance is a mutagen?
The cells die within hours of being exposed to the chemical.
The cells grow more quickly than those that were not exposed to the chemical.
The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
The cells continue to divide at the same rate as before they were exposed to the chemical.
Answer:C
Explanation:it’s 100% C
If a scientist thinks that a certain chemicals is a mutagen and expose plant cells to a large amount of such chemical in the lab, the statement that best provides evidence that the substance is a mutagen would be that the cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
A mutagen is generally described as a chemical that is capable of causing mutation in cells. Mutation in itself refers to heritable changes to the genome of a cell or an organism.
Hence, if a chemical is suspected to be a mutagen, such chemical must be able to cause mutation in the cells if they are exposed to it in large amount. The chemical should force some changes to the cell and the changes should be inheritable by the next generation of cells.
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