Answer:
inner planets
Explanation:
3. What does the salt do?
4. What was the purpose of cooling the mixture?
5. What does the cold ethanol do?
6. Why can't we use room temperature ethanol?
7. Why are strawberries classified as octoploids?
Answer:
3.You might think this should mean you need to cut out salt completely, but salt is actually an important nutrient for the human body. Your body uses salt to balance fluids in the blood and maintain healthy blood pressure, and it is also essential for nerve and muscle function.
4.Cooling the mixture is to prevent the DNA from being degraded by the heating.
5.The ethanol pulls water from the DNA molecule so that it then collapses in on itself and precipitates. The DNA will become visible as white mucous strands that can be spooled with the wooden applicator stick.
6.The colder the ethanol is the greater the amount of DNA that is precipitated. (You could try having some of the students use room temperature ethanol and see if the amount of DNA they can spool is the same or less than that for the groups using the ice-cold ethanol.
7.The reason is every strawberry seed contains different genetic material, the product of a myriad of potential gene combinations. Because the genetics of strawberries are so diverse (humans are diploid, strawberries are octoploid)
Explanation:
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which body structure have walls one cell thick
Answer:
CapillariesExplanation:
Capillaries. Capillaries connect the smallest branches of arteries and veins. The capillaries are where molecules are exchanged between the blood and the body's cells. The walls of capillaries are just one cell thick.The only body structure that has walls one cell thick is capillaries.
What are capillaries?Capillaries, the blood vessels in our bodies are so minuscule that red blood cells can only travel through them in a line. Comprised of a layer of cells capillaries facilitate the exchange of crucial substances like oxygen carbon dioxide, nutrients and waste materials, between the bloodstream and the surrounding tissues.
With the above details we can conclude that the body structure that has walls one cell thick is capillaries.
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5. A logging company cut down all the large spruce trees in an area of forest. After the area was cleared, spruce seedlings began to sprout. Rabbits, birds, and deer returned to the area.
The missing part of the question is -
" Is this Primary or Secondary Succession?"
Answer:
The correct answer is - secondary succession.
Explanation:
Recolonization of the plant and animals to habitat after a major disturbance such as flood, lava eruption, wildfire, or human disturbance is characterized as secondary succession.
In this particular case, there is secondary succession occurs, there is man-made disturbance tajes place as logging company clear the spruce trees from a habitat, and after clearing the land the spruce seedlings began to sprout, birds, rabbits recolonize to the area.
4. Free or low-cost apps have few of the same benefits as fitness trackers.
True
False
The given statemnet is false because Free or low-cost apps can provide many of the same benefits as fitness trackers, albeit with some limitations.Option B
Fitness trackers are dedicated devices designed specifically for monitoring physical activity and collecting data related to fitness goals. They often include features like step counting, heart rate monitoring, sleep tracking, and GPS tracking. These devices may offer a more seamless and integrated user experience, with optimized hardware and software for tracking and analyzing fitness data.
However, free or low-cost apps can offer similar benefits and functionalities, albeit with some trade-offs. Many smartphone apps are available that can track steps, monitor heart rate, record workouts, and provide guidance for various exercises. These apps can be downloaded and installed on smartphones, making them accessible and convenient for users.
While some features might be more accurate or reliable in dedicated fitness trackers due to specialized sensors, smartphone apps can still provide valuable data and insights for tracking fitness progress. They can offer personalized workout plans, track progress over time, provide reminders and notifications, and offer social features for sharing achievements and connecting with others.
Moreover, free or low-cost apps often come with the advantage of being customizable, allowing users to choose the features and functionalities that are most relevant to their specific fitness goals and preferences. They can be easily updated and expanded with new features as technology advances.
In conclusion, while dedicated fitness trackers may offer a more comprehensive and optimized experience, free or low-cost apps can still provide many of the same benefits, making them a viable alternative for individuals seeking fitness tracking capabilities.
Option B
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Compounds serve as the foundation for all forms of matter. True or false?
THE ANSWER IS FALSE
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Which of the following will lead to a change in current scientific theory?
A. a small group of scientist who studies the theory can make changes
B. A change in the world’s opinion
C. A change in the scientific evidence regarding the theory
D. The person who originally developed the theory can make changes
Answer:
C: A change in scientific evidence regarding the theory.
The option c. A change in the scientific evidence regarding the theory resulted in the change in current scientific theory.
What is a scientific theory?It is a theory that should be explained for the observations for the natural world that should be constructed by using the scientific method.
Also when there is any change in the scientific evidence with respect to the theory so it should have resulted in the change in the current scientific theory.
Hence, the option c is correct.
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.
What is a concept?
1.a fact that has been proven
2.the answer to a scientific question
3.an idea that can be used to talk about the world
4.a set of questions related to one topic
Answer:
an idea that can be used to talk about the world
Explanation:
What happens when the slightest change happens in an ecosystem?
A. It affects the whole system.
B. It affects part of the system.
C. The ecosystem ignores the change.
D. Nothing happens.
Which diagram represents binary fission?
Answer:
Diagram A
Explanation:
This is because binary fission is asexual reproduction by a separation of the body into two new bodies. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.
Expanded volcanic rock used as a soil amendment is known as _____.
A- Perlite
B- Vermiculite
C- Peat
D- Sand
Answer:
A or B
Explanation
I think it is A or B hope it helps ;-;
"People identify the trait they want, then only allow animals with that trait to breed
with one another.” Which of the following BEST matches the statement above?
A: industrial selection
B: Natural selection
C: Artificial selection
Answer:
I think it's A because you're deciding what you want to match or breed together
Which of the following dietary fats is considered to be the least healthy?
Trans unsaturated fat
All dietary fats are unhealthy
Cholesterol
Saturated fat
Fats that increases the bad cholesterol in the body are considered worst. Thus, Trans unsaturated fat is the correct answer.
What are trans fat?Unsaturated fatty acids have the presence of double bonds. This double bond is either 'cis' or 'trans' in origin.
When the unsaturated compounds are linked through trans bond, they form trans fat.
Trans fat are produced through chemical reaction. This reaction is termed as partial hydrogenation.
Trans fats have shown potential damage to the human body in research studies. Trans fat raises the bad cholesterol level (more lipid, less protein) in the body.
This can lead to several heart disease, liver damage or even atherosclerosis. Such diseases can be life threatening.
Trans fat are found mainly in fried and processed food. The junk food also contains high levels of trans fat.
Therefore, consumption of trans fat should be avoided for health safety.
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All of the following are reasons it might be beneficial for prokaryotes to take up foreign DNA EXCEPT that Question 77 options: a) DNA could be used for food by bacteria. b) the uptake of foreign DNA would result in potentially beneficial recombinants. c) the uptake of foreign DNA might allow a cell to repair damaged chromosomes. d) the uptake of foreign DNA could allow completely new genes with new functions to enter the recipient cell. e) the uptake of foreign DNA could result in the breakage of the plasma membrane of the recipient cell.
Answer:
dna could be used for food by bacteria
Explanation:
not a beneficial reason
All of the following reasons are beneficial for prokaryotes to take up foreign DNA except the use of DNA as food by bacteria. Thus, the correct option is A.
What is DNA uptake?DNA uptake is defined as the conversion of exogenous, DNase-sensitive DNA into a DNase-protected state inside a bacteria. In gram-negative bacteria, this DNA uptake can be achieved by crossing the outer membrane. By contrast, in gram-positive bacteria, DNA uptake is similar to gram-negative bacteria with passage across the cytoplasmic membrane.
The uptake of DNA in bacteria is beneficial as it helps in the production of recombinants that can be used for various purposes. The DNA uptake can be used for the repairing of damaged DNA and chromosomes in patients of genetic disorders.
New genes with different functions can be introduced in organisms like bacteria.
Therefore, the correct option is A.
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What does one newton exerted over a distance of one
meter equal?
Answer:
One Joule.
Explanation:
One newton exerted over a distance of one meter equal to one joule.
Joules is the S.I unit used for the measurement of scientific quantities such as work and energy and it was named after the prominent English physicist, James Prescott Joule.
Given the following data;
Force = 1N
Distance = 1N
Therefore, we know these parameters or quantities are directly related to work.
Mathematically, work done is given by the formula;
Work done = force * distance
[tex] W = F * d[/tex]
Where,
W is the work doneF represents the force acting on a body. d represents the distance covered by the body.Substituting into the equation, we have;
[tex] W = 1 * 1[/tex]
Work done = 1 Joule.
How are the electrons in the PS II system replaced?
Answer: Photosystem I obtains replacement electrons from the electron transport chain. ATP provides the energy and NADPH provides the hydrogen atoms needed to drive the subsequent photosynthetic dark reaction, or Calvin cycle.
Explanation:
the scientific name of a plant includes the
a. class and order
b. genus and species
c. class and phylum
d. variety and species
Is the kingdom. Fungi single or multi celled
Answer:
Fungi is mostly single-celled but can also be multi-celled.
Explanation:
Fungi can be both single-celled and multi-celled.
The central dogma describes which of the following?
the process by which enzymes are modified after translation
the way DNA is replicated
the flow of genetic information
the way RNA is used as a template to make DNA
Answer:
The correct answer is - the flow of genetic information.
Explanation:
The process includes the flow of genetic information or instructions encoded in DNA used to make or turn to a final product that can be DNA or protein, known as the central dogma.
Mostly central dogma term use for the protein synthesis from the DNA that takes place in the two steps, transcription is the first converts DNA into RNA and the second translation that converts product of the first step that is RNA into Protein. DNA → RNA → protein.
Thus, the correct answer is - the flow of genetic information.
The central dogma describes the flow of genetic information. The correct option is C.
A key idea in molecular biology known as the core dogma outlines how genetic information moves through cells. It says that RNA is translated into proteins from transcribed DNA.
This idea emphasises how genes are expressed and proteins are made in living things by sequentially transferring genetic information from DNA through RNA to proteins.
The fundamental dogma excludes DNA replication, the reverse transcription of RNA into DNA, and the process of post-translational enzyme modification.
Thus, the correct option is C.
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Your question seems incomplete, the probable complete question is:
The central dogma describes which of the following?
A. the process by which enzymes are modified after translation
B. the way DNA is replicated
C. the flow of genetic information
D. the way RNA is used as a template to make DNA
PLEASE HELP ME OUT WITH THIS!!
they only able to get extra Nutrients frome the rain
Help me with number 6 please its esay
Answer:
A
Explanation:
Learnt this 2 yrs ago in geography class
Answer:
a
Explanation:
Which describes what happens when cooler
air particles come into contact with the
warmer ground?
A) The particles do not interact.
B Energy is transferred from the cooler
air to the warmer ground.
©
Energy is transferred from the warmer
ground to the cooler air.
The particles'move back and forth
between the air and the ground.
D
Answer:
B. Energy is transferred from the cooler air to the warmer ground.
Explanation:
When cooler air particles come into contact with the warmer ground, energy is transferred from the cooler
air to the warmer ground.
Answer: The temperature of air would decrease.
Explanation:
The energy gets transferred from hot object to cold object until the two objects are in thermal equilibrium. When air transfers energy to a cooler object, it means the air it self is cooling down till the air and the object are in thermal equilibrium. Thus, the temperature of air would decrease.
Desiccation resistant spores, protective and complex reproductive organs, and embryos nourished by parental tissues enable land plants to ______.
Answer:
to adapt to dryland conditions
Explanation:
The main groups of land plants are vascular plants and they have developed diverse adaptations to survive on land, especially in climatic zones where drought and high temperatures are common. Some of the most important plant adaptations to land ecosystems include, among others, the development of a cuticle to prevent water loss, stomata capable of regulating water evaporation, desiccation-resistant spores coated in sporopollenium polymer, etc. Moreover, in seed plants, which are considered to be the most evolved vascular plants, the endosperm tissue produced inside the seeds is nourished by the parent sporophyte during the first stages of plant development.
Desiccation resistant spores, protective and complex
reproductive organs, and embryos nourished by parental
tissues enable land plants to adapt to dry conditions.
What is Dessication?
This is the process in which a substance dries up as a result of
loss of moisture.
In plants, resistant spores, protective and complex
reproductive organs, and embryos nourished by parental
tissues which helps to prevent desiccation and ensure that the
seeds survive harsh conditions thereby facilitating
reproduction.
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Transcription is the beginning of protein synthesis. Some of the following sentences describe events that occur during the process of transcription in eukaryotes. Determine which sentences describe steps in the process of transcription, and then place them in the chart in the order that they occur.
Answer: 1-the enzyme separates... 2.the enzyme rna polymerase binds... 3.rna polymerase... 4. The rna molecule (called a transcript)...
Point mutations resulting in a single amino acid substitution provided evidence that: Select one: A. The genetic code is a triplet code. B. The genetic code is overlapping. C. The genetic code is not overlapping. D. The genetic code is degenerate. E. tRNAs recognize codons.
Answer:
C. The genetic code is not overlapping.
Explanation:
The genetic code is nonoverlapping because each nucleotide can be part of only one codon or 'codeword' during protein synthesis. Therefore, a particular point mutation in the nucleotide sequence can result in only one amino acid modification. A nonoverlapping genetic code indicates that the same letter (i.e., the same nucleotide) can not be used for two different codons. The non-overlapping nature of the genetic code was discovered by Tsugita and Fraenkel-Conrat (1960) by observing point mutations in the tobacco mosaic virus.
A change or modification in the single nucleotide base of the genetic material is called a point mutation. It can be either addition, deletion or inversion.
The correct answer is:
Option C. The genetic code is not overlapping.
This can be explained as:
The point mutation in the amino sequence tells that the codons are not overlapping and a single nucleotide is a part of only a single type of codon.A single nucleotide can't be included in two codons.The same letters of the bases purines and pyrimidines are not a part of two different triplets.Therefore, point mutation tells that the genetic code is non-overlapping.
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Which of these is NOT found in a bone?
A) cells
B) muscle tissue
C) blood cells
D) nerve tissue
Answer:
D. Nerve tissue
Explanation:
A covalent compound would form when which two elements react?
A. Zinc and Chlorine
B. Carbon and Oxygen
C. Sodium and Chlorine
D. Magnesium and Oxygen
Answer:
B. Carbon and Oxygen
Explanation:
Carbon and Oxygen make CO2, which is a covalent bond
A hawk eats a mouse. This kills the mouse, but it also means that the remaining mice will not have to compete as much for food with each other. Based on this information, what is the relationship between the hawk and the mouse?
A. The two organisms are in a mutualistic relationship.
B. The two organisms are in a predator-prey relationship.
C. The two organisms are in a parasitic relationship.
D. The two organisms are in a competitive relationship.
Answer:
The two organisms are in a predator-prey relationship.
Explanation
because the hawk is the predator, it ate the mouse, and th mouse was they prey, it was eaten
Answer:
B
Explanation:
A woman with a straight hairline has as child with a man who is heterozygous
and has a widow's peak.
What is the mother's genotype?
Answer:
aa
Explanation:
A widow's peak is the dominant genotype so one must not have that trait. If it was presented then the woman would have the genotype.
A widow's peak is dominant so the man would be either AA or Aa. Since it stated that his is heterozygous (Hetero meaning two different), his genotype would be Aa (again since a widow's peak is the dominant, it only needs one dominant genotype)
The area of the picture highlighted by the green square is a monomer of nucleic acids(DNA/RNA). Which of the following is the name for that monomer?
A. phosphate backbone
B. thymine
C. nucleotide
Answer:
C. Nucleotide
Explanation:
There are four types of biological molecules existing in nature. These are: carbohydrates, proteins, lipids, and nucleic acids. Nucleic acids are biological polymers made up of monomeric units called NUCLEOTIDES.
A nucleotide as depicted in the attached image is a molecule made up of three components namely; Penrose sugar, phosphate group, and nitrogenous base (adenine, guanine, cytosine and thymine). Based on the image in this question;
A represents ADENINE
S represents SUGAR
P represents PHOSPHATE GROUP
Hence, the monomer is a NUCLEOTIDE.
What leads to genetic recombination in Archaebacteria?
budding
endospore
conjugation
binary fission
Answer:
Binary Fission I believe.
