If an oak tree has 6 chromosomes in its reproductive cells, then it means that it has 12 chromosomes in its somatic cells. This is like this because reproductive cells are generated by meiosis, which is a reductional cell division, producing four cells with half of the genetic material of the original cell and different from each other.
One molecule of glucose is broken down into two pyruvate molecules.
A. cellular respiration
B. glycolysis
C. photosynthesis
Answer:
B
Explanation:
primate males engage in competition for access to females. this reproductive strategy has led to larger body size and canine size in males (due to sexual selection). group of answer choices true false
The statement is true. Sexual selection is a form of natural selection in which characteristics that appeal most to the opposite sex spread more widely more common.
Which of the following variables might affect the size of a primate social group?
Most primates are highly social creatures that live in groups that range from small reproductive units to huge troops of hundreds of individuals. Food resource distribution, competition with other species, and the threat of predation are all key considerations of primate group size.
Among the various residence patterns, single-male groups have the most competition. Outside males who want to overthrow him and take over the group are constantly threatening the male in this group.
Therefore, primate males compete for access to females due to sexual selection.
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Match the correct answer to the correct blank!
Energy stored in the ______________(1)_____________of_____________(2)_
(3)______________ and converted into
(SUGARS) are
process of
>
cellular respiration
chemical bonds
ATP
broken
(5)
glucose
ہے
(4)
molecules
during the
Examples of Models
of Elements
0₂
Oxygen
He
Helium
S₁
Sulfur
Examples of Models of Compounds
A. Only elements are gases.
H₂O
Water
CO₂
Carbon dioxide
What is the difference between an element and a compound?
B. Only elements have one kind of atom.
C. Only elements have an odd number of atoms.
D. Only elements form large molecular structures.
NH,
Ammonia
The correct option is (B) only elements have one kind of compound.
What are elements?An element is a pure substance made up of only one kind of atom, each of whose nuclei contains the same amount of protons.An element is a group of atoms that all have the same number of protons in their atomic nuclei. An element's atoms always contain the same amount of protons, however, the mass can differ depending on the number of neutrons present.Atoms of the same element that contain different numbers of neutrons are known as isotopes. There are currently 118 elements, the first 94 of which are naturally occurring, and the last 24 of which are synthetic.Currently, an element, which is a complete chemical compound, corresponds to a single entry in the periodic table. They can only exist as molecules or atoms and cannot be broken down into smaller parts.Compounds:
Chemical substances known as compounds are composed of two or more elements that are chemically bonded together in a certain proportion.Therefore, the correct option is (B) only elements have one kind of compound.
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A bacterium that is exposed to a toxin in its environment can make an enzyme to neutralize the toxin. The bacterium controls protein synthesis to produce the enzyme by activating an inducible operon. The activation of the operon causes the transcription of the mRNA that codes for the enzyme. The mRNA is then translated to make the specific enzyme needed to neutralize the toxin.
What phenomenon is demonstrated in this example?
A
Evolution by natural selection
B
Cell differentiation by prokaryotes
C
Adaptation to external stimuli
D
Regulation of gene expression
The phenomenon that is demonstrated in this example is adaptation to external stimuli. That is option C.
What is adaptation?Adaptation is defined as the ability of an organism to adjust to its every changing environment in order to survive and reproduce.
From the example given in the question, the bacteria was exposed to a toxin in its environment but the bacteria was able to adapt through the production of an enzyme the neutralises the toxin.
The bacteria was able to produce the neutralising enzymes through activating an inducible operon that causes the transcription of the mRNA that codes for the enzyme.
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a genomic library is a: group of answer choices collection of dna fragments from all the chromosomes, inserted into vectors a complete set of genes, inserted into vectors series of dna fragments from the genome generated by pcr collection of mrna molecules cloned into vectors
A genomic library is a collection of DNA fragments from all the chromosomes. Option A.
A genomic library is a collection of overlapping segments of genomic DNA cloned into backbone vectors that statistically span all regions of an organism's genome. The resulting cloned DNA is then transformed into a suitable host cell line. A genomic library is a collection of all genomic DNA from one organism.
A genomic library or gene bank is a complete collection of cloned DNA fragments that make up the entire genome of an organism. It represents all genes including expressed, non-expressed, introns, exons. Genomic libraries can be stored for years and copies can be used for research purposes. Like traditional libraries, gene libraries are used to collect and store information as a set of DNA molecules. All gene libraries are collections of DNA fragments representing a particular biological system of interest.
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Use the tape measure to measure the length of your ulna. (It is the longest bone in your forearm. Measure from the end of
the bone at your wrist to the end of your elbow bone.) Record the length of your ulna in the space below. Then use the
graph you constructed earlier to predict your height in cm. Use the tape to measure your actual height if you do not know it.
Ulna length ___cm
Predicted height ___ cm
Actual height ___ cm
Was the graph a good predictor of your height? How might it be made better?
How long is the ulna?
Male students' ulna lengths ranged from 24 to 31 cm, whereas female students' ulna lengths ranged from 23 to 27 cm. Male students' mean ulna length was 27.40 2.13 cm, whereas female students' was 24.70 1.43 cm (p0.001).
How can one determine height in cm?
One of these entails raising a boy's average height by 2.5 inches (7.6 cm) and lowering a girl's average height by 2.5 inches (7.6 cm). Based on this methodology is the second calculator above. Another easy technique is to have the child's height doubled by the time he or she is two years old for boys or 18 months for girls.
What is height in cm?
Simply multiply your height in inches by 2.54 to get your height in cm to complete the conversion. In this instance, a person who is 5 feet, 6 inches tall is equivalent to 167.64 cm as measured in the metric system (66 x 2.54)
What factor accurately predicts height?
The height of the parents, or more particularly, the biparental height, is the best indicator of height. By combining the mother's and father's heights in inches, you may determine the biparental height. For boys, measure 5 inches longer; for girls, measure 5 inches shorter.
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Which type(s) of genetic material can viruses have? Check all that * 5 points apply. [4 answers]
How is gamma rays used or found in our everyday
lives or in certain industries?
Answer:
Gamma rays are used in medicine (radiotherapy), industry (sterilization and disinfection) and the nuclear industry. Remember it is very important to shield against gamma rays since they can cause diseases to skin or blood, eye disorders and even cancers.
Explanation:
What happens directly after anaphase?
• A. Metaphase
• B. Interphase
• C. Telophase
O D. Prophase
(C) Telophase happens directly after Anaphase.
Telophase is the last phase of the M-phase of cell division. It occurs in both mitosis as well as meiosis. It is the termination phase where the divided chromosomes reach on the poles and start to unwind, the mitotic spindle disassembles and all the cell organelles reappear.
Anaphase is the third phase of the M-phase of cell cycle. In this phase the actual separation of the chromosomes occurs in the opposite poles so that each daughter cell gets its share of genetic material. The mitotic spindles remain attached to the chromosomes during anaphase.
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Grass->Grasshopper->Mouse
According to the 10% rule, how
much of the grass's energy does
the mouse receive in this
example?
A. 90%
B. 10%
C. 1%
Answer: 1%
Explanation: Since its dividing by 10 every time an animal consumes another animal/plant, if you start at 100%, 100/10 = 10, 10/10 = 1.
1%
Should be a consequence of excessive greenhouse gases?
Answer:
They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases
Explanation:
what can distinguish primates that are adapted for eating large amounts of plants and leaves? group of answer choices their sagittal crests their incisor-like canines their tooth combs their lack of a diastema
Their sagittal crests distinguish primates that are adapted for eating large amounts of plants and leaves.
Many mammalian and reptilian skulls, among others, have a ridge of bone running longitudinally along the midline of the top of the skull (at the sagittal suture). There are incredibly powerful jaw muscles because of the existence of this bone ridge.
What kinds of animals have sagittal crests?
The top of the skull in carnivores and omnivores has a ridge known as the sagittal crest. The sagittal crest, which is where the powerful muscle that regulates the lower jaw's crushing action attaches, is highly noticeable in opossums and fishers but less so in coyotes, raccoons, and otters.
Therefore sagittal crests distinguish primates that are adapted for eating large amounts of plants and leaves
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the superficial portion of the dermisgroup of answer choicesa and b are correct.a, b and c are correct.includes touch receptors called meissner's corpuscles.has decreased surface area due to the presence of dermal papillae.is called the papillary region.
Option a and b are correct.
the superficial portion of the dermisgroup is called the papillary region includes touch receptors called Meissner's corpuscles.
Skin-based touch receptors are a subtype of sensory neuron that respond to mechanical stimulus. They have specific ends. Touch receptors therefore communicate with the central nervous system about tactile inputs as a component of the somatosensory system.
Mechanoreceptors fall into one of three categories: baroreceptors, proprioceptors, or tactile. Due to the physical distortion of their plasma membranes, mechanoreceptors detect stimuli. They contain mechanically-gated ion channels, which respond to pressure, touch, stretching, and sound by opening or closing their gates. Merkel's discs, Meissner's corpuscles, Ruffini endings, and Pacinian corpuscle are the four basic tactile mechanoreceptors found in human skin; two of these structures are found closer to the skin's surface and two are deeper. Krause end bulbs, a fifth variety of mechanoreceptor, are exclusively found.
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Pneumonia is an infectious disease in which fluid accumulates in the alveoli. Patients who are diagnosed with pneumonia are monitored for their oxygen saturation levels. Describe how pneumonia could affect the amount of oxygen in the blood.
Answer:
Pneumonia can prevent your lungs from moving enough oxygen into your bloodstream, causing less oxygen to be present in blood.
Explain the relationship of the sun, earth, and moon and the concept of
gravitational pull.
Answer:
Earth, Sun and Moon The mass of the sun is 1.99 x 10^30 kilograms, while the Earth weighs in at 6.0 x 10^24 kilograms. The gravitational constant is 6.67 x 10^-11 meter^3 / (kilogram – second^2). So the Earth and sun pull on each other with a force equal to 3.52 x 10^22 newtons.
Explanation:
Hope this helps lol
a bacterium underwent a missense mutation. which of the following has changed? a. just its phenotype b. just its genotype c. both its genotype and phenotype d. neither its genotype nor phenotype
When a bacterium undergoes a missense mutation, only its genotype changes.
While occasionally spontaneous mutations may occur that cause it to change, genotype often remains constant from one environment to another. A broad variety of phenotypes can be produced by the same genotype when it is exposed to various environments.
What are missense mutations?
A missense mutation is a DNA alteration that causes the protein produced to encode a different amino acid at a specific location. Some missense mutations change how the resulting protein functions. Missense mutations, which modify an amino acid in a protein without changing how it functions, can also be benign.
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Soil is made up of both organic and inorganic matter.
O True
O False
Answer:
True
Explanation:
Soil consists of organic and inorganic matter
with sexual reproduction,: many single-celled eukaryotic organisms have evolved complex life cycles that include sexual reproduction. with sexual reproduction,: diploid cells must undergo mitotic cell division in order to reproduce. haploid cells must undergo meiotic divisions to form gametes. genetic material from two haploid cells is combined. all of these choices are accurate.
According to the given statement at some point, two cells must fuse to become diploid.
The correct option is A.
What is diploid cell?Human somatic cells are diploid, meaning they have 46 chromosomes, 22 pairs of autosomes, as well as a pair of y chromosome. A pair of chromosomes is one that has each chromosome has two copies.
Where are diploid cells?Most eukaryotes have a diploid chromosomal set in somatic cells, or non-sex cells. These cells hold the organism's full genetic information, or chromosomes, or double the number of haploid chromosomes. As just a result, every cell in an organism contains every gene present in that organism.
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The complete question is -
Many single-celled eukaryotic organisms have evolved complex life cycles that include sexual reproduction. This means that:
A- at some point, two cells must fuse to become diploid.
B- diploid cells must undergo mitotic cell division in order to reproduce.
C- haploid cells must undergo meiotic divisions to form gametes.
D- complex mating behaviors likely evolved at the same time as sexual reproduction.
An epidemiologist wants to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease.
What are some controlled variables?
A
The death rate of unvaccinated individuals will be higher than vaccinated individuals.
B
The vaccine
C
The death rate
D
Age and pre-existing conditions
If an epidemiologist wants to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease, then the controlled variables are age and pre-existing conditions (Option D).
What is a controlled experimental variable?A controlled experimental variable is any variable in the experimental treatment that remains the same in different groups in order to make a comparison with the target group.
Therefore, with this data, we can see that the controlled experimental variables are those that stay the same to make comparisons in a given experimental procedure.
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In an experiment to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease, the controlled variable is: the death rate.
What is a control experiment?A control experiment simply refers to a type of experiment in which a condition assumed to be a probable cause of an effect is compared with the same situation without involving or using the suspected condition.
This ultimately implies that, all factors are held constant in a controlled experiment except for the independent variable.
In Science, a controlled variable must always be held constant and unchanged in an experiment in order to prevent it from affecting or influencing the result, which is what the death rate connotes in this scenario.
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what are the 4 Chambers of heart?
Answer:
The four chambers of the heart are the two upper and two lower chambers.
Explanation:
The four chambers of the heart are the two upper and two lower chambers.
The upper chambers are the right atria and the left atria, and the two atrias receive blood. The lower chambers are the right and left ventricles, and the two ventricles pump blood out of the heart.
Answer:
The heart is divided into two parts atrium and ventricle. We have left atrium, right atrium, left ventricle and right ventricle.
Reabsorption of fluid into the capillary takes place at the arterial end or venous end of the capillary?.
The venous end of the capillary is where reabsorption of fluid into the capillary takes place.
Osmotic pressure is the net force that propels reabsorption—the flow of fluid from the interstitial fluid back into the capillaries—into the body (sometimes referred to as oncotic pressure).
The blood's hydrostatic pressure is the reason behind this (which favors filtration out of the capillary is lowest in the venous end of the capillary.) Cationic Exchange Because capillary hydrostatic pressure (CHP) exceeds blood colloidal osmotic pressure, net filtration occurs close to the arterial end of the capillary (BCOP).
Due to the fact that CHP = BCOP, there is no net fluid movement around the middle. Near the venous end, net reabsorption takes place because BCOP is higher than CHP.
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During the reproduction stage of the lytic cycle, what happens?
Answer: Reproduction of viruses using host cells
Explanation: In the lytic cycle the viruses introduces its genome into a host cell and initiates replication by introducing itself into the host cellular machinery and makes copies of itself and developes its own mechanism. Once introduced virus particles are released through lysis of the host cell into surrounding waters and produces its effects.
Cyclorana platycephala is a frog that is found in Australia. Like all frogs, it needs to keep its skin moist. During periods of drought it digs a chamber in the ground and lines it with mucous, which hardens and seals the chamber from water loss. The frog settles into the chamber, its metabolism slows down, and it becomes inactive. The frog can survive in this state for up to five years. Describe how this trait will determine the types of biome that the frog might live in.
These traits will make the frog live in harsh conditions in its different biomes.
The species, Cyclorana platycephala, has moist skin to undergo cutaneous respiration. It can dig underground chambers and line the chamber with mucous to avoid water loss. This is important to avoid severe conditions of drought when water is scarce.
The frog's ability to slow down its metabolism is also a brilliant feature to avoid harsh conditions of food and water unavailability. These traits allow the frog to survive in conditions that are impossible for other organisms to live in.
What is Cutaneous respiration?
Cutaneous respiration, also known as cutaneous gas exchange, is a type of breathing in which an organism's skin or outside integument serves as the site of gas exchange rather than its gills or lungs. Cutaneous respiration may be used in conjunction with other methods of gas exchange, such as ventilation, or it may function alone.
Therefore, these traits help the frog to live in severe environmental conditions.
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How does slow movement aid sloths in acquiring food?
Sloths are so slow moving that algae is able to grow symbiotically in their fur. This algae can be licked out of the sloth's fur to provide it with nourishment.
Answer:
Slow movement helps sloths to acquire food in several ways. Sloths are herbivores that spend most of their time in trees and have a slow metabolism that enables them to survive on a low-energy diet. Their slow movements also help them to conserve energy, which is necessary for them to survive in their natural habitat.The slow movements of sloths also help them to avoid predators, such as jaguars and eagles, that are known to prey on them. By moving slowly, sloths can avoid detection by these predators and remain hidden in the trees where they live.
Sloths have long arms and legs with curved claws that are adapted to their arboreal lifestyle. These claws allow them to hang upside down from branches and move through the trees with ease. Sloths are also able to rotate their heads up to 270 degrees, which allows them to scan their surroundings for potential predators and food sources.
The slow movements of sloths are also beneficial when it comes to acquiring food. Sloths feed mainly on leaves, which are high in fiber but low in nutrients. By moving slowly, sloths are able to conserve energy and digest their food more efficiently. Sloths also have a specialized digestive system that allows them to extract more nutrients from their food than other herbivores.
In conclusion, slow movements aid sloths in acquiring food by helping them conserve energy, avoid predators, and digest their food more efficiently. Their long arms and legs with curved claws, and their ability to rotate their heads up to 270 degrees, also make it easier for them to move through the trees and find food sources.
Explanation:
how does an enzyme affect the biochemical reactions in the real world?
Answer:
"The enzyme speeds up the reaction by lowering the activation energy needed for the reaction to start." "compare the activation energy with and without the enzyme. Enzymes generally lower activation energy by reducing the energy needed for reactions to come together and react."
Which stage is most associated with a cell that is unable to divide again, such as a muscle or nerve cell?.
[tex]G_{0}[/tex] phase is most associated with a cell that is unable to divide again.
Some cells enter a phase in which they neither divide nor prepare to divide after differentiation because they lost the ability to divide again.
A cellular state outside of the replicative cell cycle is referred to as the [tex]G_{0}[/tex] phase. Environmental factors like nutrient deprivation, which restricted the resources required for proliferation, caused cells to enter [tex]G_{0}[/tex]. As a result, it was regarded as a phase of rest. It is now known that [tex]G_{0}[/tex] can manifest in a variety of ways and for a variety of reasons. The majority of adult nerve cells, for instance, are fully differentiated and in the terminal [tex]G_{0}[/tex] phase, making them one of the most metabolically active cells in the body. Neurons are in this state as part of their developmental plan, not because of random or limited nutrients.
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Select the statement which is true of plants.
O All plant organs are made of the same
tissue types: ground, vascular, and
dermal.
O All plant organs are made of the same
tissue types: ground, nervous, and
dermal.
O Most plant organs are made of the
same tissue types: ground, vascular,
and dermal.
O Very few plants have the same tissue
types. The type of tissue a plant has
depends on which organs it contains.
Plant tissue systems can be classified as either permanent (or non-meristematic) tissue or meristematic tissue. Animal stem cells are analogous to meristematic tissue in that both types of cells continue to divide undifferentiated and aid in the growth of the plant. Plant cells that are no longer actively dividing make up permanent tissue in contrast.
Cells produced by meristems rapidly differentiate, or specialize, and develop into permanent tissue. These cells adopt a defined function and stop proliferating. Dermal, vascular, and ground tissue are the three primary tissue types that discriminate between them. All three tissue types are present in each plant organ (leaves, stems, and roots):
The plant's dermal tissue covers it, provides protection, and regulates water and gas exchange.
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Answer:
I could be wrong, but I believe it's dermal vascular and ground tissue
Explanation:
Sorry if incorrect
Of the four possible explanations for the origin of platyrrhines, which one is the most accepted currently?.
The earliest appearance of platyrrhines occur in fossil records comes from the late Oligocene in South America country is the currently most accepted of the four possible explanations for the origin of platyrrhines.
The Platyrrhine Fossil Record contains fossils of new world monkeys, which are few in comparison to the richness of Neotropical wildlife today and the generally strong fossil record for other South American animals. The late Oligocene in South America is when platyrrhines first emerge in the fossil record. 5-10 mya after the Fayum primate.
The earliest primates identified so far date from the Oligocene, although rodent remains from the late Eocene were recently uncovered in Chile, raising the possibility that there may be older monkey fossils in South America as well. These Patagonian fossils, like the early stem platyrrhines from Bolivia, are broadly connected to New World monkeys, though affinities to contemporary subfamilies are difficult to ascertain.
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Iin the wavelength and photosynthesis experiment, what is the purpose of the beaker left in the dark?.
The dark beaker is a control because it contains all of the experiment components, but photosynthesis should not occur in the absence of light.
One of the beakers should be covered to prevent light from reaching the leaf discs. Place the second beaker approximately 15 centimeters from a light source. As soon as the light is turned on, start timing the experiment.
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