Answer:
a ruler
Explanation:
I say A ruler because think how small a shoebox is a shoebox is not that big so you would measure it with a ruler
How does cell volume affect nutrient exchange between the cell and its external environment.
Answer:
The ratio of cell volume to surface area determines the efficiency of nutrient exchange.
Explanation:
The small dense region within the
nucleus is called...
A. the chloroplast.
B. the nucleolus.
C. the mitochondria.
Answer:
the nucleolus
Explanation:
i gotchu
In a certain population of rabbits, the allele for brown fur is dominant over the
allele for white fur. If 20 out of 100 rabbits have white fur, what is the allele
frequency for the dominant allele?
During inhalation, _____muscles contract to elevate the ribs. During forced exhalation, ______muscles contract to depress the ribs
External intercostals contract to elevate the ribs during inhalation while internal intercostals contract to depress the ribs during forced exhalation.
Inhalation and exhalation constitute the process of respiration.While inhalation is simply the act of breathing in, exhalation is the exact opposite, breathing out.
The intercostal muscles are muscles situated in between the ribs of an animal or a person. It is separated into:
external intercostals which are responsible for elevating the ribs when they contract during inhalation andthe intercostal muscles which play a role in depressing the ribs during exhalation.To learn more about muscles, see: https://brainly.com/question/9883108?referrer=searchResults
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The first three strata of the epidermis consists of ______ keratinocytes and the most superficial strata contain ______ keratinocytes.
The first three strata of the epidermis consists of living keratinocytes and the most superficial strata contain dead keratinocytes.
What is epidermis and its function?
The cutin with the wax provides protection against fungi, bacteria and some insects. The main function of the epidermis is the coating, preventing the action of pathogenic agents, reducing injury by mechanical shocks and preventing water loss.
As the epidermis is the most superficial tissue that the body has, in this part there are living and dead cells at the same time.
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s. aureus has been isolated from george’s infected wound. to satisfy koch’s postulates, what would george’s doctor need to do with the isolated s. aureus?
George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.
What is Koch's postulates?Robert Koch was a famous microbiologist that made some postulates as follows:
The bacteria must be present in every case of the disease.The bacteria must be isolated from the host with the disease and grown in pure culture.The specific disease must be reproduced when a pure culture of the bacteria is inoculated into a healthy susceptible host.The bacteria must be recoverable from the experimentally infected hostAccording to this question, S. aureus has been isolated from George’s infected wound.
This means that in accordance with Koch's postulates, George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.
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32. 8) What type of solution has an equal concentration of substances on both sides of the membrane?
A. osmosis
B. hypotonic
C. isotonic
D. Otonic
D. hypertonic
Answer:
C. isotonic
What is a isotonic solution?
Two solutions exerting the same osmotic pressure over a semipermeable barrier are said to be in an isotonic solution. Without affecting the concentration of solutes on either side, this condition enables unrestricted passage of water over the membrane.
What is osmosis?The tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
Which of the following is a function of the plasma membrane?
a. breaks down lipids, carbohydrates, and proteins from foods
b. stores water, salt, proteins, and carbohydrates
c. keeps the cell wall in place
d. regulates which materials enter and leave the cell
Why socialist government turn authoritarian
The reason why socialist governments often turn authoritarian are:
Having too much power eventually corrupts the holder. When resistance builds, they try to suppress it because they feel socialism is the best way.Why does socialism sometimes become authoritarianism?Socialist governments tend to have too much power vested in the Executive in order to properly plan the economy. As a result, they often get corrupted because their power is inhibited.
When this corruption leads to inefficiency, authoritarianism is introduced to ensure that the citizens cannot overthrow the government which wants to keep power.
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ou add a fluorescent antibody to a cell surface protein to a dish of cells. Looking at an individual cell under the microscope the entire surface of the cell is fluorescent. You then hit the cell with a brief pulse from a laser which bleaches out part of the fluorescence on the cell. Over time you notice that the entire surface of the cell becomes fluorescent again. What is the best explanation for this observation
The best explanation for this observation is that the proteins from parts of the cell membrane that were not bleached with the laser diffuse into regions of the membrane that were bleached.
What is an observation?It should be noted that observation means the active acquisition of information from a source.
In this case, the best explanation for this observation is that the proteins from parts of the cell membrane that were not bleached with the laser diffuse into regions of the membrane that were bleached.
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What are the defining characteristics of chondricythyes?
Species in this class have paired fins, hard scales, a two-chambered heart, and a pair of nostrils. Most species have 5-7 gill slits on each side of their body.
Chondrichthyes are cartilaginous fishes and are mostly marine with basic fish attributes.
ChondrichthyesThey are a class of fishes known as cartilaginous fishes. They possess all the characteristics of fishes in addition to features such as:
living mostly in marine habitatspossessing a pair of jawthe central placement of the mouthpossession of cartilaginous skeletons instead of bonesMore on Chondrichthyes can be found here: https://brainly.com/question/3520910
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13. What two sub-processes do NADH and FADH2 cycle between? What do they do at each location?
NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.
What occur in the NADH and FADH2 cycle?FADH2 and NADH are created through reduction-oxidation reactions in the Krebs cycle. This cycle produces small amounts of energy in the form of adenosine triphosphate (ATP), and also responsible for the production of compounds i.e. FADH2 and NADH. NADH produces 3 ATP whereas FADH2 produces 2 ATP molecules
So we can conclude that NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.
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Write about the importance of exothermic reactions in daily life and illustrate the destruction caused by their absence
Everyday uses of exothermic reactions include self-heating cans and hand warmers. When energy is taken in from the surroundings, this is called an endothermic reaction and the temperature of the surroundings decreases.
Identify the hormone represented by each letter
Identify the hormone represented by each letter, in this case, the letter A represents the thyroid glands and letter B represents the parathyroid gland.
What does the thyroid do?The thyroid is a butterfly-shaped gland that is located in the anterior part of the neck, hugging the windpipe. The hormones produced by it act on our body and metabolism from our fetal formation to senility.
What is the function of the parathyroid?
The parathyroids are four glands located in the neck, behind the thyroid, whose function is to control the levels of calcium in the blood through the production of parathyroid hormone (PTH).
These two organs have essential functions for the human body responsible for metabolism.
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I need help with this assignment!
learning activity handout: cell respiration summary
Answer:
Cellular respiration is a process that all living things use to convert glucose into energy. Autotrophs (like plants) produce glucose during photosynthesis. Heterotrophs (like humans) ingest other living things to obtain glucose. While the process can seem complex, this page takes you through the key elements of each part of cellular respiration.
Explanation:
hope this helps :)
Which is an abiotic factor that can be found in a rain forest ecosystem?
Answer:
rainfall
Explanation:
there is a high rate of rainfall in rainforest, therefore amount of rain fall being abiotic factor can affect rain forest
What happens when a phase in the cell cycle does something incorrectly / doesn't do its required tasks, what happens to the cells that are impacted by those errors and what effect does it have on other cells in the cell cycle?
When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.
What happens when a phase in the cell cycle does something incorrectly?When a phase in the cell cycle does something incorrectly, then they cannot move to opposite poles in the later phases of mitosis, which result the cell with extra chromosomes and a daughter cell with missing chromosomes. These mutations can lead cell death, disease or cancer.
So we can conclude that When a phase in the cell cycle does something incorrectly, mutation occur which leads to cell death or cancer.
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After an investigation, Kuri determines that her hypothesis was wrong. What is the best thing for Kuri to do next?
propose a scientific theory that explains what went wrong
write a new hypothesis and conduct new experiments to explore the matter
rewrite a scientific law to better predict the observations she gathered
move on to a different topic because there is no value in a wrong hypothesis
Write a new hypothesis and conduct new experiments to explore the matter. Thus, option "B" is correct.
What is the Hypothesis?Hypothesis
The formulation of hypotheses is one of the key steps in the scientific method.
Hypotheses are usually tested using experiments and are usually accepted or rejected depending on the outcome of the experiments.
If a hypothesis is rejected, it does not mean that the entire subject is abandoned. Rather, new hypotheses may be formed and experiments conducted to further explore the subject.
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How much ATP is produced from the Kreb Cycle?
According to the research, in the Kreb Cycle two ATP molecules are generated.
What is the Kreb Cycle?It is the set of reactions that generates most of the electron carriers (energy) that will be connected in the electron transport chain.
Two molecules of adenosine triphosphate (ATP) are formed from one glucose molecule (two turns of the cycle).
Therefore, we can conclude that according to the research, in the Kreb Cycle two ATP molecules are generated.
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If a population is in Hardy- Weinberg equilibrium, what is happening to that population? A. It is experiencing a shift in population size. B. It is not evolving. C. The population is migrating. D. Individuals are experiencing variations within the species. If a population is in Hardy Weinberg equilibrium , what is happening to that population ? A. It is experiencing a shift in population size . B. It is not evolving . C. The population is migrating . D. Individuals are experiencing variations within the species .
Answer:
Its B
Explanation:
Its not going to EVOLVE
On which part of the maintenance cycle do linux administrators spend the most time?
The part of the maintenance cycle the linux administrators spend the most time is monitoring system.
What is monitoring system?
A system monitor is a hardware or software component used to monitor system resources and performance in a computer system.
This computer hardware can be used by administrators to monitor system resources and performance in a computer system.
Thus, the part of the maintenance cycle the linux administrators spend the most time is monitoring system.
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If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise. You expect what to happen
No muscle contraction will be observed.
What is the effect of calcium concentration on muscle contraction?The concentration of calcium ions in the muscle cells help in contraction and relaxation of muscles fibers.
Release of calcium ions initiate muscle contraction.
Therefore, there will be no contraction of muscle if calcium ions are not transported out from the sarcoplasm.
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What structure seals the space between two cells and makes it impermeable?
The structure that seals the space between two cells and makes it impermeable is; Occluding or Tight Junction
What is the Cell Junction?
The correct answer to the question is called Occluding junctions or tight junctions. This is because Occluding junctions in cell structures are junctions that create a watertight seal that is like an impermeable or semipermeable barrier in between adjacent cells to prevent the escape of water or other liquids.
Thus, the structure is called an Occluding junction or tight junction.
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How does biodiversity affect ecosystem stability?
A. Not all ecosystems are effected in the same way
B. Biodiversity has no effect on stability
C. More biodiversity increases stability
D. More biodiversity decreases stability
The ecology is absolutely necessary for biodiversity. Ecosystem stability also rises as a result of increased biodiversity.
What do you mean by biodiversity?
The term "biodiversity" is used to describe the variety of species that can be found on earth. It can include things like plants, animals, bacteria, fungi, and microbes. The diversity of life on earth is immense; while many species are still waiting to be discovered, many more have already gone extinct. The ecosystem is composed of every single living thing. It also covers their surrounding environment and how people interact with them.
The ecosystem depends heavily on the various species. Therefore, the ecosystem's ideal balance is impacted when a single species goes extinct or is lost. Plants use the energy from the sun as part of the ecosystem's cycle.
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4 which two biomolecules are most often
analyzed to establish homologies between
different species?
Answer:
DNA and protein
Explanation:
two biomolecules are most often
analyzed to establish homologies between
different species are DNA and proteins
A species with narrow niches that can survive in a small range of environmental conditions are
A. K-selected species
B. r-selected species
C. Generalist species
D. Specialist species
Answer:
D. Specialist Species
What is the advantage for species to be specialists, and how can they survive in the presence of opportunistic/generalist species?
In the setting of specialized habitats or unique situations, specialized species exist. When those conditions and surroundings change, they must adapt or go extinct, thus they must survive while they still exist.
When compared to generalists, they have the benefit of efficiency, which increases the likelihood of survival and, hence, reproduction within certain settings or situations. The generalists, on the other hand, have the benefit of being able to survive in a larger variety of circumstances and have a higher probability of doing so.
Cactuses, which are plants adapted to dry environments, are an example of specialization. More generalist plant species would typically outcompete cacti in most habitats on Earth, but very few of such species could endure the harsh conditions of a desert.
Extreme environmental conditions, competition for limited resources, and "evolutionary arms races" are some of the pressures that cause specialization. Cheetahs sprint quickly both because their prey moves quickly and because quicker cheetahs will be more effective hunters and more likely to procreate. The advantage of specialization is clear when seen from the standpoint of catching the next meal on a daily basis.
My key argument is that specialization's benefits must always be viewed in the context of the environment that generated the selective pressure that resulted in specialization. Although experts are specialists because they must be, their specializations put them in danger.
The ancestors of elephants inhabited every continent except Antarctica and Australia. But the Asian and African elephants are the only ones to survive. Why?
Options:
A) Dinosaurs killed all other elephant species.
B) Asian and African elephants killed off other species of elephants.
C) Asian and African elephants adapted well to their environments.
Asian and African elephants adapted well to their environments. Thus, the correct option is C.
Environment of Antarctica is not suitable for elephants why?
The world's coldest location is Antarctica. Additionally, it is the windiest and driest. Almost the entire year, the continent is covered in snow. Due to the extremely harsh temperatures and lack of healthy soil, Antarctica is therefore unsuitable for raising elephants and cultivating crops. Elephants eat grass, while the entire continent of Antarctica is covered in snow. In this database, there are currently 25 (8,17) living elephants located in Australia.
Although they can be found in a variety of environments, including deserts, swamps, and highlands in tropical and subtropical areas of Africa and Asia, they are most frequently found in savannas, grasslands, and woodlands.
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Explain in your words the light-dependent
reaction and the light-independent reaction
Answer: In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.
Explanation:
All parts of the body must work
together to maintain homeostasis.
Which of these help maintain
homeostasis in the body?
A. chloroplasts
C. central vacuoles
ernational Academy of Science. All Rights Reserved.
B. cell walls
D. organ systems
D. organ systems help maintain homeostasis in the body.
What is homeostasis?Homeostasis is the process by which the body maintains a stable internal environment, despite changes in the external environment. This involves the coordination of various systems and processes within the body, including the circulatory, respiratory, digestive, and nervous systems.
These organ systems work together to maintain homeostasis by regulating various functions, such as maintaining a consistent body temperature, pH balance, and fluid balance.
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What does the term angiosperm literally mean?
A. seed leaf
B. enclosed seed
C. open seed
D. seed cone
Answer:
Angiosperm. n., plural: angiosperms. [ˈændʒɪəˌspɜːm] A flowering, fruit-bearing plant or tree known for having ovules (and therefore seeds) develop within an enclosed ovary.
Answer: B. Enclosed seed
Explanation:
