Choose the following true statement:
a)When cells are finished with their tasks, they work, they die, and are replaced by new cells
b)Once a cell is made, the body will not regenerate new ones.
c)There are limited amount of cells the body can produce
d)All cells will continuously multiply forever.
Answers
Answer:
D
Explanation:
because. when one cell dies another is replaced so it gos on forever and ever
Related Questions
Which of the following helps protect biofilms from issues such as drying out and predators
a.) Extracellular polymeric substances
b.) Quorum sensing
c.) Becoming sessile
d.) Autoinducers
Answers
Extracellular polymeric substances help protect biofilms from issues such as drying out and predators. Option A
Biofilms are complex communities of microorganisms that adhere to surfaces and form a protective matrix. They can be found in various natural and artificial environments, such as riverbeds, medical devices, and plumbing systems. Biofilms provide advantages to the microorganisms within them, including protection from environmental stresses and predators.
One of the key components that helps protect biofilms is extracellular polymeric substances (EPS). EPS are complex mixtures of polysaccharides, proteins, and DNA that are secreted by microorganisms within the biofilm. These substances form a matrix that encases the cells, providing structural support and protecting the community.
EPS help biofilms resist drying out by retaining water and preventing desiccation. The polysaccharides in EPS can absorb and retain moisture, creating a hydrated environment within the biofilm even in dry conditions. This is crucial for the survival of the microorganisms within the biofilm.
Additionally, EPS serve as a barrier against predators. The matrix formed by EPS can make it difficult for predators, such as protozoa or grazing organisms, to access and consume the microorganisms within the biofilm. It acts as a physical defense mechanism, limiting the exposure of the microorganisms to predation.
While quorum sensing, becoming sessile (immobile), and autoinducers are all important mechanisms and processes associated with biofilms, they do not directly address the protection of biofilms from drying out and predators. So Option A is correct.
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(((30 POINTS!)) ((DUE SOON))
Sickle cell anemia is a recessive genetic disease. Treshon and Shameka are married and planning to have children. Treshon has sickle cell anemia. Shameka does not have the disease, but her father did. As a student of genetics, develop an explanation for the chances that this couple would have a child with sickle cell.
Answers
Answer:
Hi
Explanation:
hi
Marissa pedals her tricycle down the sidewalk. At what age was she likely first able to pedal? (2 points)
A.One year old
B.Two years old
C.Three years old
D.Four years old
Answers
Answer:
three years old i think. sorry if its wrong
Which does not describe the relationship because nucleus and the electron cloud of an atom?
Answers
Complete Question:
Which does not describe the relationship between nucleus and the electron cloud of an atom?
Group of answer choices.
A. the electrons move faster than the particles in the nucleus
B. the masses of the nucleus and electron cloud are balanced
C.the charges of the nucleus and electron cloud are balanced
D.the electron cloud takes up much more space than the nucleus
Answer:
B. the masses of the nucleus and electron cloud are balanced
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
An electronic cloud can be defined as a group of negatively charged electrons circulating around an atomic nucleus. It is typically referred to as valence electrons.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Both the protons and neutrons of an atom of a chemical element have a mass of 1 atomic mass unit (amu) while an electron have an approximate mass of 0 atomic mass unit (amu).
Hence, the masses of the nucleus and electron cloud of an atom cloud are not balanced.
what is the analogy between the vacuole and a school?
Answers
Answer:
The vacuoles is like the cabinets in the school used to store items. where we release all of our energy. Cytoplasm is like the hallways of the school.
Which governmental level usually administers permitting and regulation of land use?
Answers
Answer: Local Governments
Explanation:
Generally, local governments have a large degree of autonomy to control land use within their jurisdictions. States typically grant them the authority to pass ordinances and regulations as long as they do not conflict with other laws. Furthermore, all states give municipalities the power to enact zoning regulations. In 15 states, state legislation also requires municipalities to adopt a Comprehensive Plan. Similarly, in 8 states local governments are required to adopt Local Zoning Ordinances.
______ occurs because the nervous systems send messages to the muscles in the muscular system.
(I need someone to fill in this blank with the best possible answer, I’ll reward points + brainalist)
Answers
Answer:
action potentials
Explanation:
other possible answers:
electrical impulses
muscular contractions
action potentials is likely your best bet though
Explanation:
Neurons carry messages from the brain via the spinal cord. These messages are carried to the muscles which tell the muscle fibre to contract, which makes the muscles move.
Where does the carbon come from in the tree?
Answers
( hope this helps )
According to Newton's first law, an object in motion
will stay in motion unless:
a. A balanced force acts on it
b. An unbalanced force acts on it
c. It stops
d. It remains at rest
Science 6th grade, pls help
Answers
Unless an unbalanced force is acting on an object, Newton's first law states that it will stay at rest or move in a straight line at a constant speed.
What state does Newton's law claim an object in motion will remain in?Newton's first law states that any object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the application of an external force. Inertia is the propensity to resist changes when things are moving.
Does an object that is moving continue to do so?According to Newton's First Law of Physics, moving objects continue to move in the same direction unless they are affected by an imbalanced force. Things moving include among others, the US dollar, rates, inflation, and oil.
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Chemicals extracted from certain sponges can have medicinal purposes. For example, some are used to treat cancer patients. Which of the following is the best description of this kind of biotechnology?
Answers
From the question, it states that chemicals are extracted from certain sponges. This implies that certain sponges already contained this chemical previously before extraction. We will keep this in mind and move forward.
We are given 4 answer choices:
0. This is an example of genetic modification of marine organisms.
,1. This is an example of using existing chemicals from living things to create new treatments for human diseases.
,2. This is an example of creating chemicals from living things to create new treatments for different diseases in marine organisms.
,3. This is an example of creating vaccines for viral infections from the ocean.
Let's underline a few key words/phrases in each of these answer choices:
0. This is an example of ,genetic modification ,of marine organisms.
,1. This is an example of using ,existing chemicals, from living things to ,create new treatments, for ,human, diseases.
,2. This is an example of ,creating chemicals, from living things to ,create new treatments, for different diseases in ,marine organisms,.
,3. This is an example of ,creating vaccines, for viral infections from the ocean.
We are given the context that we are extracting chemicals that are used to treat cancer patients. That means we are using marine organisms (in this case sponges) to treat human diseases (in this case breast cancer). Therefore, the correct answer choice must be the 2nd answer choice.
inguinal lymph nodes are found in
Answers
A.
B.
C.
D.
Astronomy
Answers
Answer:
A is the correct answer u what usyr tik tk nsme7198 92959
1. Which gene mutation (insertion, deletion, or substitution) appears to have the biggest impact on an amino acid sequence? Explain your answer.
Answers
Answer:
A frameshift mutation caused by an insertion or deletion of one or more nucleotides in the coding sequence of a gene has the most significant impact on the amino acid sequence of the resulting protein. This is because the genetic code is read in groups of three nucleotides (codons), and an insertion or deletion shifts the reading frame and changes the codon sequence downstream of the mutation. As a result, all the amino acids downstream of the mutation are different from those in the original protein sequence.
How many cells are in interphase, how many in prophase, how many in metaphase, anaphase, telophase?
Answers
Answer:
We get 69.6 % cells in interphase, 12.5% in prophase, 8.9% in metaphase, 5.4% in anaphase, and 3.6% in telophase.
Many plants in the forest that have not been discovered or named are believed to have medicinal uses. This is an example of a/an __________ justification for the conservation of forests.
A)
ecological
B)
aesthetic
C)
utilitarian
D)
cultural
Answers
Answer:
C) utilitarian
Explanation:
They want to conserve the plants because they might have a use.
Which of these is most likely to occur soon after an individual eats a meal?
Answers
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=> Your body breaks down carbohydrates quickly, and glucose travels directly through the walls of your intestines and into your blood.
A
Which organelles found in both plant and animal cells have the function of
assembling protein molecules from amino acids?
Vacuoles
B Ribosomes
с DNA
D Golgi bodies
Answers
Hope this helps
What did Frye and Edidin show in their experiments on the plasma membrane?Select one:a.The plasma membrane is full of integral but not peripheral proteinsb.Plasma membranes are rigid and cannot move, that is why eukaryotes do not need a cell wall.c.Only glycoproteins in the plasma membrane can moved.All proteins in the plasma membrane can rotate but not move in positione.All proteins in the plasma membrane are laterally mobile
Answers
The Fryer-Edidin experiment proved that membranes heve fluidity and flexibility in them due to the movement of protein within cells membranes. The experiment showed that two cells are fused have they membrane proteins diffused around the membrane and mingle rather than being locked in only one area of the plasm membrane. Therefore, the alternative that is closer to the results of Frye-Edidin experement is the letter E. All proteins in the plasma membrane are laterally mobile (and can move in the membrane area).
what organs does muscular disorder affects?
Answers
Muscular disorders can affect the skeletal muscles, which are the muscles that allow us to move our body, as well as the smooth muscles and cardiac muscles.
Myopathies, or muscular disorders, can have an impact on a number of the body's organs and systems. Since these disorders have an effect on the composition, structure, or metabolism of muscle tissue, they have the greatest direct effect on the muscular system.
This may result in symptoms such as muscle atrophy, cramps, stiffness, and weakness. However, because the heart, lungs, and digestive system depend on healthy muscle function to do their jobs well, the effects of muscular disorders can also spread to those organs.
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What reproductive cells produce new fungi?Question 5 options: spores seeds hyphae buds
Answers
Spores are formed by the fungi and released to create new fungi. This is the powdery substance released by puffballs. Spores are haploid reproductive cells found in some bacteria, plants, algae, fungi, and protozoa. Theoretically, spores can reproduce asexually to produce countless offspring.
Hope this helpsssss
What is the purpose of natural selection?
Answers
Answer:
The purpose of natural selection is not a conscious or intentional one, as it is not driven by a specific goal or purpose. Instead, natural selection is a fundamental process in biology that acts on heritable traits within populations over generations. It is a key mechanism of evolution.
Explanation:
The primary outcome of natural selection is the adaptation of organisms to their environment. Individuals with traits that are advantageous in a particular environment are more likely to survive, reproduce, and pass on those beneficial traits to their offspring. Conversely, individuals with traits that are disadvantageous are less likely to survive and reproduce, leading to a reduction in the frequency of those traits in the population over time.
Natural selection, therefore, acts as a filter that shapes the characteristics of populations, favoring traits that enhance an organism's survival and reproductive success in a given environment. Over many generations, this process can lead to the development of new species or the modification of existing ones, as populations accumulate adaptations that allow them to thrive in different ecological niches.
It's important to note that natural selection does not have an end goal in mind, nor does it necessarily lead to the "best" or most advanced organisms. Instead, it is a consequence of the interactions between organisms and their environment, constantly shaping and refining the traits of living beings based on their ability to survive and reproduce.
What happens first during cellular respiration?
A. The movement of small organic molecules into a mitochondrion
B. The breakdown of food molecules into smaller organic molecules
C. The formation of many molecules of ATP
D. The breakdown of small organic molecules into carbon dioxide
Answers
Answer:
B
Explanation:
Answer:
b
Explanation:
i took the quiz
1. ¿Cuáles son las células que contiene la retina?
Answers
Answer:
Células fotorreceptoras: Son los conos y los bastones. Transforman los impulsos luminosos en señales eléctricas.
Células bipolares de la retina. Conectan las células fotorreceptoras con las células ganglionares.
Células amacrinas. ...
Células horizontales. ...
Células ganglionares de la retina.
Approximately how long was there life on Earth before humans evolved?A. They were formed at about the same time.B. 3 billion yearsC. 100,000 yearsD. 100 million years
Answers
As we know the earth was formed about 4.5 billion years ago, meanwhile the first records of life date from 3.5 billion to 3 billion ago. It was until many eons later that humans and more specifically hominids came to existence around 8 million years ago, so we can say that the correct answer is option B.
the growth activity of the cell is an important role by chromatin it is also responsible for the metabolism of cell as well as the genetic functions of cells
Answers
Chromatin plays a important role in metabolism of cell and it regulates the genetic activities of the cell as well. To create chromosomes, chromatin fibers are coiling and condensing. Numerous cellular functions, including DNA replication, transcription, DNA repair, genetic recombination, and cell division, are made possible by chromatin.
The compactification of lengthy DNA strands is chromatin's primary function. The compartment in which DNA is housed in the nucleus is much smaller than the length of the DNA itself. The DNA needs to be compressed in some way in order to fit into this compartment. The degree of DNA condensing is measured by the packing ratio. DNA is not directly packaged into the structure of chromatin in order to obtain the overall packing ratio. Instead, it has numerous organizational structures.The process of transcription involves proteins reading the genetic data encoded in DNA, converting it into RNA, and then translating the RNA into useful proteins. No transcription happens if the chromatin becomes stronger and prevents access to the read proteins. Transcription can be carried out by euchromatin, an expanded kind of chromatin. While heterochromatin, a condensed form of chromatin, is crammed too closely together for proteins to read DNA.All DNA-based processes are hindered by the way DNA is wrapped up in chromatin. Chromatin can easily change its shape and structure because of the very dynamic way that proteins and DNA are arranged. At the site of DNA damage, chromatin relaxes quickly, allowing repair proteins to connect to the damaged DNA and repair it.So, for genome replication, transcriptional silencing, DNA repair, and recombination, chromatin architecture is essential.
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Your question in incomplete, For full question please refer:
The growth activity of the cell is an important role by chromatin it is also responsible for the metabolism of cell as well as the genetic functions of cells. Explain it.
The process of detecting and encoding stimulus energies by the sensory receptors and the nervous system is called
Answers
Sensation
In biology, the nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.
please help The Archaeopteryx lithographica fossil shown in the image is the oldest-known fossil with feathers. The fossil shows evidence that the organism had teeth, wings with fingers and claws, and a backbone that extended into a tail. For these reasons, the Archaeopteryx lithographica is considered a transition fossil, meaning that it links and exhibits traits from two different ancestral groups. Use the chart in part B to identify the two animal groups that this fossil links together. Also explain how transition fossils provide evidence for evolution.
Answers
Archaeopteryx lithographica is the oldest fossil that shows a connection between two classes of individuals, such as reptiles and birds. It has some characteristics of the reptiles and some characteristics of the birds.
What is an evolutionarily connecting link?Through the process of evolution from one class another is derived, and it is possible because of the entry of the new trait or character. Due to this, connecting links are seen in nature, such as in Archaeopteryx, which has the characteristics of a bird because it has feathers and some characteristics like reptiles, such as teeth.
As a result, Archaeopteryx serves as a link between reptiles and birds.
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The answer to this question I can’t figure it out
Answers
Answer:
lactic acid.
Explanation:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen. In food production, it may more broadly refer to any process in which the activity of microorganisms brings about a desirable change to a foodstuff or beverage.[1] The science of fermentation is known as zymology.
Describe the relevant structure of the tissues
Answers
Answer:
Tissues are groups of cells that work together to perform a specific function. The structure of tissues can vary depending on their function, but there are some general features that are common to many tissues.
Which statistical test is common for
genetics and tests observed data against
the probability of those values?
A. ANOVA
B. standard deviation
C. chi-square testosterone
Answers
The statistical test which is common for genetics and tests observed data against the probability of those values is the chi-square test. The correct option is C.
What is statistical technique?The chi-square test, a statistical method, is used to compare actual results with forecasts. This test's objective is to determine whether a disparity between observed and anticipated data is due to chance or a correlation between the variables under study.
The chi-square test compares observed data to the likelihood that those values are true, and it is a statistical test that is frequently used in genetics.
Therefore, the correct option is C. chi-square.
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