The age of the earth can however be derived from prior knowledge of the age of the Canyon Diablo meteorite.
What is Age?This is defined as the length of time during which a being or thing has existed.
The fragment of the Canyon Diablo meteorite determined the elements that formed as radioactive uranium decayed over billions of years.
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How could Flor explain why all three species share some body structures and have some differences? Why do only house geckos and Pacific gulls have two temporal holes in their skulls?
The similarities in the structure of the three species is due to their sharing a common ancestor while the differences is due to adaptation.
What is divergent evolution?Divergent evolution is evolution where individuals who shared a common ancient ancestor process to have differing structures due to differences in their habitats.
All three species that Flor observed having similar structures is because they had a common ancestor.
The species had differences because they evolved to adapt to their different environments.
Wall geckos and Pacific gulls have temporal holes in their skulls as adaptations to their habitat.
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what is variations.
Answer:
1 : a change in form, position, or condition Our routine could use some variation.
2 : amount of change or difference Scientists record the variations in temperature
Explanation:
i hope it helps mark me brainliest^^
A diagram of a plant cell is shown.
The process being represented is ____.
A. Meiosis
B. Mitosis
C. Respiration
D. Mutation
Answer:
Mitosis
Explanation:
All the pictures represent the 5 phases of mitosis: interphase > prophase> metaphase> anaphase> telophase
It cannot be considered as meiosis because we have a single cell dividing into 2, neither a respiration or mutation
What genotypes would you expect in future offspring from this marriage? select all that apply. ii i a i i b i i a i a i b i b i a i b
The genotyoe of the offspring can be obtained from the genotype of the parents using a punnet square.
What is genotype?The term genotype refers to the sum total of the genes that an organism receieves from its parents. We have to note that genes often occur in pairs called alleles. The combination of gene alleles controls the expressed trait in the organism.
This question is incomplete. However, we do know that the genotyoe of the offspring can be obtained from the genotype of the parents using a punnet square.
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Describe the change that occur in the skin to get rid of excess heat.
Answer:
brainly me
Explanation:
When we get too hot: Sweat glands in the skin release more sweat. The sweat evaporates , removing heat energy from the skin. Blood vessels leading to the skin capillaries become wider - they dilate - allowing more blood to flow through the skin, and more heat to be lost.
When heat activates sweat glands, these glands bring that water, along with the body's salt, to the surface of the skin as sweat. Once on the surface, the water evaporates. Water evaporating from the skin cools the body, keeping its temperature in a healthy range.
What do you mean by sweat glands?" Sweat gland is defined by a simple tubular gland of the skin that excretes perspiration, is widely distributed in nearly all parts of the human skin, and consists typically of an epithelial tube extending spirally from a minute pore on the surface of the skin into the dermis or subcutaneous tissues where it ends in a convoluted tuft."
What are the types of sweat glands?There are two types of sweat glands:
eccrineapocrine.What is the main function of sweat gland?"The primary function of sweat glands is to keep the core body temperature at approximately 37 °C by releasing sweat in a hot environment or during physical activity."
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Which principle of heat exchange is the most important explanation for why birds look larger in colder weather because they fluff their feathers?.
What do you notice about each beaker?
Answer:
The more sugar added to each beaker, the more active the yeast becomes.
Due to a genetic modification, a mouse has no horizontal cells in its retinas. What impact will this have on the mouse’s vision?
Answer:
Below
Explanation:
Horizontal cells are the laterally interconnecting neurons having cell bodies in the inner nuclear layer of the retina of vertebrate eyes. They help integrate and regulate the input from multiple photoreceptor cells. Without them you wouldn't be able to see color, which means the mouse won't process color.
Due to a genetic modification, a mouse has no horizontal cells in its retinas and it does not expresses the connexin26.
What is horizontal cells?
The horizontal cells has receptive field with the neurobiotin and controlled by the electrical coupling.
Horizontal cells are the laterally interconnecting neurons having cell our bodies withinside the internal nuclear layer of the retina of vertebrate eyes. They assist combine and alter the enter from a couple of photoreceptor cells.
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Can someone help me please?
Explanation:
the first one and the last one is transverse
A population of cells carrying a desired plasmid is called a.
Answer:
it is called a clone
Explanation:
DNA used to transmit a gene from one organism to another there fore it being a clone
Answer:
Clone
Explanation:
A population of cells carrying a desired plasmid is called a Clone. Self-replicating DNA used to transmit a gene from one organism to another is a Vector
A particular triplet of bases in the template strand of dna is 5' agt 3'. The corresponding codon for the mrna transcribed is
The corresponding codon for the mRNA that is transcribed is referred to as 3'-UCA-5'.
What is a Codon?This is defined as a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid.
During transcription, the corresponding base for Adenine is Uracil, cytosine is to guanine and Thymine is to Adenine and 5'3' to 3'5'.
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The corresponding codon for the mRNA transcribed is 3'-UCA-5'. The corresponding mRNA lacks the nucleotide base thymine (T).
What do you mean by mRNA?mRNA may be defined as the molecules that carry the genetic information needed to make proteins.
During transcription, the template strand of DNA is transformed into the mRNA in the nucleus of the cell. mRNA consists of nucleotide bases Adenine, Guanine, Cytosine, and Uracil. Hence, the sequence of the strand gets reversed according to the template strand of the DNA.
Therefore, the corresponding codon for the mRNA transcribed is 3'-UCA-5'.
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Hello, I don't mean much, but what are the signs and symptoms of cholera?????
Answer:
Diarrhea (Stool appears pale and milky)
Fatigue and weakness
Nausea and vomiting
Dehydration
Electrolyte Imbalance
Low blood pressure
Loose skin and dry mouth
Rapid heart beat
Weight loss
Explanation:
What will happen if Mars was not closer to the sun?
Answer:
It would not affect Earth at all, but Mars would be colder and dark most of the time, like the planets far away from the sun.
Explanation:
Answer:
Mars is already a cold planet but if it moved farther to the sun, it would mess up all of the other planets' orbit.
What causes hyperpolarization of a neuronal membrane?.
The cause of hyperpolarization of a neuronal membrane is the flow of positive ions out of the opening channel of the neuronal membrane.
What is hyperpolarization?
This can be defined as when the membrane potential becomes more negative at a particular spot on the neuron’s membrane.
The cause of hyperpolarization is when the flow positive ions out of the opening channel of the neuronal membrane can cause hyperpolarization.
Examples: Opening of channels that lets K+ flows out of the neuronal membrane or let's CL- flow into the neuronal membrane can cause hyperpolarization.
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Siamese cats and Himalayan rabbits have light-colored bodies but darker-colored paws, ears, and tail due to an enzyme whose activity varies with temperature. This is an example of ______.
The special features in the Siamese cats and Himalayan rabbits is an example of adaptation.
What is adaptation?Adaptation refers to the special features or structures that an organism possesses which makes it better suited to survive and reproduce in its environment.
Adaptations helps an organism to:
find foodfind matesavoid predators survive extreme climatic conditionsThe features in the Siamese cats and Himalayan rabbits due to enzyme activity that varies with temperature is an example of adaption.
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A cell that does not have a true nucleus or membrane bound organelles.
Answer:
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle.
In the Hardy-Weinberg principle, the actual number values of p and q will not change if five specific conditions are being met. This indicates
Question 1 options:
evolution is occurring only because of mutations
evolution is not occuring
evolution is occurring rapidly because of climate change
evolution is occurring because of natural selection
In the Hardy-Weinberg principle, the values of p and q will not change if evolution is not occurring.
What is the Hardy-Weinberg principle?The Hardy-Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies in a population.
The Hardy-Weinberg principle states that allele and genotypic frequencies remain constant in absence of evolutionary forces.
These evolutionary forces include nonrandom mating, gene drift, gene flow, mutation and natural selection.
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Explain what is meant by the "health of a population”. What affects the health of a population?
Answer:
Population health is defined as the health outcomes of a group of individuals, including the distribution of such outcomes within the group.
A recent increase in pesticide use has resulted in a decrease in the local bat population. What is the BEST explanation for the decreased bat population?
1. Bat food supply decreased.
2. Bat food supply increased.
3. Infection with the pesticide destroyed most of the bat population.
4. Many bats have moved into the area.
Answer: 1. (A bat food supply decreased.)
Explanation:
what is the difference between segregation and independent assortment? Will give brainiest award/ 72 points
Answer:
The Law of Segregation states that the members of each pair of alleles separate when gametes are formed. A gamete will receive one allele or the other. The Law of Independent assortment states that two or more pairs of alleles segregate independently of one another during gamete formation, so basically the Law of Independent Assortment, also known as "Inheritance Law", means that the inheritance pattern of one trait will not affect the inheritance pattern of another.
Explanation:
The photo shows frog eggs at the edge of a pond.
Which two factors might keep some of the eggs from becoming adult frogs
that produce their own eggs?
Answer:
a
Explanation:
What is the competitive exclusion principle?
What is the role of DNA?
a: to allow substances to enter the cell
b: to fight infections
c: to encode genetic information and control the cell
d: to release cytotoxins
Answer:
c
Explanation:
every thing related to dna is encoding or transcribing genetic info or genes
Answer:
To encode genetic information and control the cell
Explanation:
I GUESS
Which of the following are examples of habitats where sympatric speciation could occur?
Choose one or more:
A. different locations along the Great Barrier coral reef in Australia
B. opposite sides of a mountain range
C. the North Rim and South Rim of the Grand Canyon
D. an elevational gradient on the south-facing slope of a mountain
E. varying water depths in a lake
An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
What is Sympatric speciation?Sympatric speciation refer to evolution of a new species or the creation of new species from the ancestal species that is alive and surviving while both of them continue to live in the same geographic region. In evolutionary biology and biogeography, sympatric refer to organisms that have ranges and their ranges overlap so that they occur together some places.
The individual are dependent on some physical needs like shelter, food and so on.
Therefore, An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
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10.A 600 kg great white shark is lurking below an observation cage. His movement is
being studied from a series of motion sensors below the boat. The shark leisurely
charges the cage, strikes it and makes the cage rattle. Later, the shark returns for
another run at the cage. The shark strikes the cage with 12,800 N of force. The
shark traveled for 10 m in making its run. The cage is designed to withstand
124,500 J of "work" before it breaks. Should the man in the cage be worried?
Explain.
The work done by the shark is 128000 J which is greater than the maximum force the cage can withstand (124500 J), the man in the cage should be worried.
What is work done?Work done is the product of force and the distance covered by the force.
Mathematically;
Work done = Force × distanceThe unit of work done is Joules.
The work done by the shark is calculated as follows:
Work done = 12800 × 10
Work done = 128000 J
Maximum force the can withstand = 124500 J
Since the work done by the shark is greater than the maximum force the cage can withstand, the man in th cage should be worried.
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An elephant has 56 chromosomes. Which statement about a zygote of an elephant is true?
Answer:
alright if this works the same way it does with humans (i'm almost totally sure it does but just in case) the answer is: the zygote has 56 chromosomes, 28 inherited from the mother and 28 from the father.
Explanation:
what are the chromosomes of an animal
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique
Explanation:
Answer & Explanation:
Chromosomes in an animal are thread-like structures located inside the nucleus of the cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
What characteristic of the genetic code points to a common ancestry for all organisms?
Answer:
The code contains 64 codons. The genetic code is almost universal.All living organisms store their genetic informations using the same molecules which are DNA and RNA
Explanation:
In an experiment investigating the time needed to kill a certain type of bacteria at 100°, which of the following variables need to be controlled?
time only
temperature and type of bacteria only
temperature only
time and temperature only
Baed on the nature if the investigation, the temperature and type of bacteria need to be controlled in this experiment.
What are variables in an experiment?Variables are quantities whose values determine the result or can affect an experiment.
Variables may either be:
dependent variableindependent variable constant variableSince the experiment is investigating the time needed to kill a certain type of bacteria at 100°, the temperature and type of bacteria need to be controlled.
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what is the function of phloem?
Answer:
While the main role of the phloem tissue is to transport carbohydrates from sources to sinks through the sieve elements, phloem is also composed of parenchyma cells, which play a key role in the storage of water, non-structural carbohydrates and storage proteins (Rosell 2016)