Answer:
Radiometric dating calculates an age in years for geologic materials by measuring the presence of a short-life radioactive element, e.g., carbon-14, or a long-life radioactive element plus its decay product, e.g., potassium-14/argon-40. The term applies to all methods of age determination based on nuclear decay of naturally occurring radioactive isotopes. Bates and Jackson (1984)
Explanation:
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A solar panel collects sunlight and converts it to
heat or electrical energy. How is a solar panel
similar to chloroplasts?
Answer:
chloroplasts use photosynthesis to make food from the sun to survive.
Explanation:
they use the sun's energy as a kind of "go-go juice"
Which of these best explains the impact of radiation on the geosphere?
Land is heated up by the sun's energy.
Water is heated up by the sun's energy.
Water heats up the air surrounding it.
Land heats up the air surrounding it.
Answer: I believe its A: Land is heated up by the sun's energy
Explanation:
Because When the sun is Pointing at the ground for example the heat or radiation of it heats the land or ground
Question: Maya designed an experiment to see how much rain falls off the leaves of plants of this type. She placed collecting trays under the leaves and experiment could be repeated. Which of these is NOT a reason why is it important that Maya's experiment can be repeated by someone else. A.to prepare for future experiences B. to show all the error she made in her experiment
C. so other people can see if result were correct D. so other can develop their own search of her work.
Answer: D (so other can develop their own search of her work.)
Someone else does not need to develop their own search of Maya's work. Maya has already completed the experiment. So, the answer to the question should be option D.
Hope this helps!
PLEASE HELP FAST!!
CELLS: Describe the structure of a eukaryotic plant cell. Indicate the ways in
which a non-photosynthetic prokaryotic cell would differ in structure from this
generalized eukaryotic plant cell.
Answer:
A cell that is nonphotosynthetic, such as a prokaryotic bacterium, would not require chloroplasts to function.Explanation:
A broad sweeping eukaryotic plant cell accomplishes the basic functions required for plant care. It's a jumble of organelles held together structurally by the cell membrane, which is located outside of the cell wall.
What is eukaryotic cell?Plant and animal cells are eukaryotic, which means they contain nuclei. Plants, animals, fungi, and protists all have eukaryotic cells.
They typically have a nucleus organelle surrounded by a membrane called the nuclear envelope, which stores DNA.
Prokaryotes are typically simpler, requiring only a few organelles to survive. This is frequently because, as previously stated, it requires less energy.
It has DNA to contain genetic material, ribosomes to make proteins, a cell membrane, and a cell wall to protect the cell from its surroundings. While other components are produced by prokaryotes, the ones listed above are those that may be found in plant cells.
Aside from that, the non-photosynthetic prokaryotic cell requires much less energy, resulting in a cell that is much smaller and less complex than the generalized eukaryotic cell.
Thus, this way, a non-photosynthetic prokaryotic cell would differ in structure from this generalized eukaryotic plant cell.
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The variable that causes a change in another?
Answer:
Dependent Variable
Explanation: The dependent variable is the variable to be explained (the ‘effect”) and the independent variable is the variable expected to account for (the “cause” of) the dependent variable. Like Cause and Effect.
FIRST ONE PLEASE HELP FAST!
CELLS: Choose three membrane-bound organelles. Describe them below.
Include their shape, location, and a detailed description of their function.
Answer:Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)
Explanation:
Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA. Eukaryotes also have a golgi apparatus that packages and distributes proteins. Mitochondria are the power house of the cell and provide the cell with energy.
Which of the moon's properties prevents it from being pulled inward by Earth?
Explanation:
I think so the answer is inertia
plzzzz mark my answer as brilliant
Answer: INERTIA
Explanation: Quizlet saves lives/ it remains in a state of motion without being disturbed! Have a great night and pls lemme know if this helps! :)
Explain the relationship between the length of a Great White
Shark and how much food it eats per year.
Answer:
Explanation:
Every living thing grows. It needs energy to grow. It gets energy through food. When it doesn't have enough energy, it won't grow as fast. When it does, it will grow normally. If it get's more than enough, it will grow faster. One exception is if that organism is a human, and is having a growth spurt.
Explain how the lungs work
Answer:
Your lungs bring fresh oxygen into your body. They remove the carbon dioxide and other waste gases that your body's doesn't need.
Explanation:
Hope that helps!
In a population of frogs, there is a dominant allele H that improves the survival of eggs in moderately dry conditions compared to the wild-type and recessive h allele. Imagine that climate change causes the environment where these frogs live to become more dry. Individuals with the drought-resistant eggs on average have 21 viable offspring per frog per generation, whereas those without that phenotype on average have only 12. If we start off with genotype frequencies of .02 HH, .03 Hh, and .95 hh, what is the average excess fitness of the H allele?
Answer:
8.55
Explanation:
I n the year1908, these two men Godfrey Hardy and Wilhelm Weinberg gave a specification of the relationship between the frequency of genotype and frequencies of allele that should occur when such a population is in equilibrium
p²+2pq+q² = 1
we have,
p² = 0.02
p = √0.02
such that frequency of H is = 0.1414
2pq = 0.03
q² = 0.95
q= √0.95
such that frequency of h =0.9746
(21-12) * 0.95 =
8.55 frogs per generation
H and h will coexist.
monomers are called carbohydrates are linked together to form fat molecules, or ______
Answer:
polymer
Explanation:
Hope that helps!
leaves uses_,_and_to make food for the plant
Answer:
Hey mate.....
Explanation:
This is ur answer.....
---> Sunlight, Water and Carbon dioxide
hope it helps,
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explain the resistence ......?? follow me gyus
Explanation:
is there multiple choice?
What is true about radioactive isotopes of an atom?
They are less stable.
They are more abundant.
They are more scarce.
They are more stable.
Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.
Answer: This is the answer :D sorry im late
Explanation:
Regular physical exercise is a great way to improve your overall well being. Exercise controls weight, improves mood, boosts your energy and metabolism, improves sex life and promotes good sleep. The physical activity is usually accompanied by increase in body temperature and sweating. What is the reason for the increase in the body temperature? Explain the relationship between sweating and body temperature and the significance of this feedback. What type of feedback system? identify all components of the feedback system.
Answer:
Explanation:
"A part of your brain called the hypothalamus controls your body temperature. In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. So when a fever comes on, it's a sign that something is going on in your body."
In pea plants, round seed shape (R) is dominant over wrinkled (r). Write the genotype for a plant that is heterozygous.
Answer:
Rr, heterozygous traits have one recessive and one dominant, therefor meaning its going to be Rr
Answer:
R.r
Explanation:
Hetero = different
Hom0 = same
An individual hom0zygous for a particular trait has two of the same allele at the gene. In this case, it would either be R.R or r.r.
An individual heterozygous for a particular trait has two different alleles, in this case it is R.r.
This monarch butterfly has orange wings. Is orange
the genotype or the phenotype? Explain
Answer:
Phenotype
Explanation:
It's phenotype because a genotype is not a physical trait; a genotype means genes. It's phenotype because it a physical trait you can see. Lets say twins look the same on the outside but on the inside they have completely DNA. This is like how some butterflies look the same with orange wings but one might have a mutation in its genes.
Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highly specialized ribonucleases that degrade mRNA soon after its synthesis. C) are sequence-specific DNA endonucleases. D) are very specific proteases that cleave peptides at only certain sequences. E) catalyze the addition of a certain amino acid to a specific tRNA. c The biological role of restriction enzymes is to: A) aid recombinant DNA research. B) degrade foreign DNA that enters a bacterium. C) make bacteria resistant to antibiotics. D) restrict the damage to DNA by ultraviolet light. E) restrict the size of DNA in certain bacteria.
Answer:
C) are sequence-specific DNA endonucleases
Explanation:
Restriction enzymes represent a type enzyme capable of recognizing short nucleotide sequences to cut at specific restriction sites in the DNA, these sites are known as target DNA sequences. Some of the most commonly used restriction enzymes are EcoRI, BamHI and HindIII, isolated from Escherichia coli, Bacillus amyloliquefaciens and Haemophilus influenza, respectively. Restriction enzymes are endonucleases because these enzymes only cleave the phosphodiester bond within the DNA chain, conversely to exonucleases, which cleave nucleotides from the end of the polynucleotide DNA strand.
______ is a disease that results in bowed legs and other bone deformation
Answer: Rickets
Explanation:
Rickets is a bone disease caused by children it says in studies but yes it is rickets
Dehydration reactions remove two _____
atoms and one
______ atom, the equivalent of a water molecule.
1. water
2. polymers
3. oxygen
4. ethanol
5. catalases
6. hydrogen
7. nitrogen
8. hydrolysis
Answer:
2 Hydrogen atoms and 1 oxygen atom.
Explanation:
The chemical makeup of Water ([tex]H_{2}O[/tex]) is 2 Hydrogens and 1 oxygen. These atoms are removed from each other when dehydration occurs.
Which is a difference between eukaryotic and prokaryotic cells? A. Nucleus, A. Cell membrane, C. Cell wall, D. Cillia
Answer:
Nucleus is a difference between eukaryotic and prokaryotic cells because nucleus is present in eukaryotes and nucleoid also called genophore / prochromosome is present in prokaryotes.
14)The lower jaw articulates with the temporal bone at the ?
Answer:
Entre ambas se encuentra la escotadura sigmoides. El cóndilo en estado fresco se encuentra recubierto por fibrocartílago y se articula con la fosa mandibular (o cavidad glenoidea) del hueso temporal, constituyendo la articulación temporomandibular o ATM, situada por delante del conducto auditivo externo.
Explanation:
as a research scientist you discover what you believed to be a new organism you find the organism in the event of an underwater volcano what would you need to determine about the organism in order to prove that it alive
What you would need to to determine that is to look at the "organism" to see if it has
order, sensitivity or response to the environment, reproduction, adaptation, growth and development, homeostasis, energy processing, and evolution. If it does then it is a organism.
How have modern organisms evolved over long periods of time?
Answer:
Darwin's theory of natural selection states that organisms evolved from their common ancestors over a long period of time.
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Ways to calculate an "average" include
A. mean, median, and mode
B. mean, median, and percent
C. mean, percent, and mode
D. percent, median, and mode
True or false adult stem cells are the best option for healing the widest variety of diseases
Answer:
true
Explanation:
II. Write a position statement on whether you think athletes like Santhi should be allowed to compete. Use evidence based reasoning in your position.
Answer:
The correct answer is stated in the Explanation section.
Explanation:
Santhi Soundarajan is an Indian track and field athlete that have won multiple international medals. Santhi was the center of a controversy when she was striped her silver medal after failing a sex verification test at the 2006 Asian Games. Santhi has a condition known as androgen insensitivity syndrome, she carries a Y chromosome althoug she has female genitalia. I think is not fair to disqualify an athlete like Santhi unless it is determined that she committed fraud and that she has an evident advantage. If Santhi knew her condition and it is established that she has an advantage after multiple tests, then her medal could be removed.
Which of the following factors is most likely to decrease the stability of an ecosystem?
A
The removal of a species
B
An increase in plant biodiversity
C
The removal of an individual animal
D
An increase in animal biodiversity
Answer:
A
Explanation:
The removal of a species can reduce the food source of another species, which can cause that species to slowly die out, where other animals that consume the dying species start dying out... ect.
So it decreases the biodiversity which can mess with populations.
If the species is a herbivore, it could cause the plants that are eaten by that herbivore to get out of control in population, which can fight for sunlight and resources with other species causing ecosystem collapse.
In an ecosystem, the removal of a species can decrease the stability. Thus, option A is correct.
What are the biotic factors of an ecosystem ?Biotic factors are the basic unit of ecosystem where the living beings interact with each other and their environment.
There are two components of an ecosystem such as biotic and abiotic components, include distribution of energy in our environment.
Biotic components can be classified into autotrophs, heterotrophs and decomposers based on mode of nutrition.
Autotrophs are producer such as plants as they produce food through the process of photosynthesis.
Heterotrophs are the consumer depend on producer for their nutrient, which is further classified into three categories.
Primary consumers are herbivores rely on producers for food while secondary consumers depend on primary consumers. They can be carnivores or omnivores.
Tertiary consumers depend on secondary consumers for food. some quaternary consumers are also seen in some food chains.
Decomposers include saprophytes such as fungi and bacteria which lie on decaying organic matter and essential for the ecosystem
Hence, option A is correct.
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Which of the following is an example of federalism?
why lenses in a microscope is important. essay
Answer:
So you can see what is on the glass slide