Answer:
A stem cell is A. a specialized cell that can divided limitlessly
Explanation:
sorry if i keep answering ur questions im j good at this stuff lol
Answer:
D.
Explanation:
Stem cells differ from other kinds of cells in the body. All stem cells—regardless of their source—have three general properties: they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types. Stem cells are unspecialized.
I hope this helps! ^^
the length and breadth of a rectangular Courtyard is 90 m and 42 m find the distance covered by a boy if it takes 5 rounds of courtyard
Answer:
Area = L × B
= 90 × 42
= 3780 m
According to the question
He takes 1 round in 3780m
So ,
5 round = 5 × 3780
=18900
Explanation:
Testing Specific Functions of the Cranial Nerves
Match the disorder listed in column A with the cranial nerve associated with that disorder listed in column B.
Column A
1. blindness
2 corneal reflex is absent (2 answers)
3. difficulty turning the eye inferior and lateral
4. inability to laterally rotate the eye hypoglossal
5. inability to maintain balance and equilibrium
6. inability to pucker the lips
7. inability to smell
8. inability to taste bitter (sensed by posterior taste buds of the tongue)
9. pupillary reflexes are absent (2 answers)
10. soft palate droops on one side (2 answers)
11. tongue deviates to one side when it is stuck out of the mouth
12. weakness in elevation of the scapula
Column B
a. abducens
b. accessory (spinal accessory)
c. facial
d. glossopharyngeal
e. oculomotor
f. olfactory
g. optic
h. trigeminal
i. trochlear
j. vagus
k. vestibulocochlear
Answer: There are 12 pairs of cranial nerves originating from the nuclei in the inferior surface of the brain, some sensory, some motor and some mixed. The following disorders are associated with the cranial nerves as arranged below with its explanations.
Explanation:
1.) Blindness: This is caused by damage to the Optic nerve ( that is, cranial nerve II ).
2.) Corneal reflex is absent: This is caused by damage to trigeminal and facial nerve ( that is, cranial nerve V and VII).
3.) Difficulty turning the eye inferior and lateral: This is caused by damage to the abducent ( that is, the cranial nerve VI).
4.) Inability to laterally rotate the eye: This is caused by damage to hypoglossal nerve( that is, the cranial nerve XII)
5.) Inability to maintain balance and equilibrium: This is caused by damage to the
vestibulocochlear nerve ( that is the cranial nerve VIII)
6) Inability to pucker the lips: This is caused by damage to facial nerve.
7.) Inability to smell: This is caused by damage to olfactory nerve ( that is, cranial nerve 1)
8.) Inability to taste bitter (sensed by posterior taste buds of the tongue): This is caused by damage to the Vagus nerve ( that is , cranial nerve X).
9.) Pupillary reflexes are absent: This is caused by damage to oculomotor and optic nerve.
10.) Soft palate droops on one side: this is caused by damage to vagus and glossopharyngeal nerve.
11.) Tongue deviates to one side when it is stuck out of the mouth: This is caused by damage to hypoglossal nerve.
12.) Weakness in elevation of the scapula: This is caused by damage to accessory (spinal accessory nerve.)
Do you think murder committed during sleep walking is a punishable offense? Why?
Answer:
no because ur sleep walking and u cant control that
Answer:
yes and no
Explanation:
because when your asleep you dont know what your doing and when you get woken uo you tend to get violent so yea
How does global warming affect earth’s troposphere?
Answer:
Most of the world's weather originates in the troposphere, a second scientist tells Carbon Brief, meaning that changes to seasonal temperatures could be affecting the likelihood of extreme weather events, such as flooding and drought.
Why do many plants have specialized cells that produce strong odors?
A. To attract prey
B. To scare off predators
C. To attract insects
D. To collect more sunlight
SUBMIT
Answer:
c
Explanation:
some plants use this as a way so they could pure insect to trap them and digest them
Plants have specialized cells that produce strong odors to attract insects.
Example:- The inflorescence of the titan arum plant attracts specific pollinators by emitting an intense, carrion‑like odor.Why plants attract insects?Flowering plants attract pollinating insects with scent from their flowers and bright colors. If they have become infested with herbivores like caterpillars, they attract beneficial insects like parasitic wasps with the help of scent signals from their leaves.Flowers attract insect for pollination too.
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What are the 7 functions of the cell membrane?
Explain why the structure of a brain cell would differ from that a red blood cell.
Answer: Red blood cells carry a specific type of protein, called hemoglobin, which is able to bind oxygen and release it in other tissues. A nerve cell doesn't have this protein because it doesn't need to bind oxygen. Instead, the nerve cell uses other proteins that help it transmit signals to other cells.
Explanation:
Brain is composed of brain cells known as nerve cells where as RBC also known as red blood corpuscle is a component of blood.
What is the structure of a brain cell ?The brain's neurons are the cells that transmit and receive chemical and electrical messages. They serve as the brain's building blocks and act as information carriers for all of the body's neurons, muscles, and tissues. You can think, feel, move, and take in information with their help.
Erythrocytes, sometimes known as red blood cells, are one of the elements of blood. Our bone marrow continuously produces them. One billion red blood cells can be found in just two or three droplets of blood, which is what gives human blood its recognizable red color. From our lungs, red blood cells transport oxygen to the rest of our bodies. The carbon dioxide is then transported back to our lungs, where it is expelled.
Therefore, the structure of a brain cell differs greatly from red bood cell.
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what is a kitchen garden??
Answer:
a garden or area where vegetables, fruit, or herbs are grown for domestic use.
Explanation:
please give brainlest
Answer:
well its usually by the window or under the cabinets with special red lights or artificial light spectrum lights to allow the plants to grow as if they were outside, that’s how we can grow plant on mars in a facility.
Explanation:
Why must transcription occur where DNA can be found?
because DNA can't leave
O because DNA polymerase is found there
O because ribosomes are in the nucleus
O because helicase unzips the DNA
Answer:
because DNA can't leave
Explanation:
Transcription must occur where deoxyribonucleic acid (DNA) can be found: A. because DNA can't leave.
What is transcription?Transcription can be defined as a biological process that typically involves re-writing the information contained within a deoxyribonucleic acid (DNA) into a ribonucleic acid (RNA) by enzyme RNA polymerase.
Generally, the Transcription of deoxyribonucleic acid (DNA) produces a single-stranded ribonucleic acid (RNA) molecule that is the same with the strand of DNA used as the template.
In conclusion, transcription must occur where deoxyribonucleic acid (DNA) can be found in living organisms because DNA can't leave.
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Why is the normal range for the mass of DNA in a male cat cell lower than for a female cat?
Answer:
It's B
Explanation: I answered it right on gizmos.
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of?
Group of answer choices
carbohydrates
proteins
lipids
nucleic acid
Answer:
The correct answer is ''proteins.''
Explanation:
Transport phenomena are essential in living beings, either to carry a hydrophobic molecule through an aqueous medium (transport of oxygen or lipids through the blood) or to transport polar molecules through hydrophobic barriers (transport through the cell membrane). Biological transporters are always proteins. Proteins are capable of carrying out specific functions such as the selective transport of molecules, or certain enzymatic reactions, among others. Membrane proteins can be peripheral or partially or totally integrated into the membrane, being, generally, globular or fibrous. Its activity is essential for the maintenance of transmembrane gradients. Thanks to membrane proteins, the exchange of molecules such as nutrients or waste products takes place, as well as the reception of external signals. Among its functions are channel-forming: Integral proteins arranged in the membrane in such a way that they give rise to the formation of a pore or channel, usually hydrophilic. These pores or channels allow the entry and exit of certain substances from the cell.
4 What is the relationship between Domains and Kingdoms? (1 Point) -Domains are further broken down into Kingdoms.
- Kingdoms include the prokaryotic cells and Domains do not.
-Kingdoms are larger groups of organisms and contain Domians
-Domains are specific to Genus of living things and Kingdoms are Species of living things.
Answer:
domain are further broken down into kingdom
Explanation:
A domain is a taxonomic category above the kingdom level. The three domains are: Bacteria, Archaea, and Eukarya, which are the major categories of life. ... A kingdom is a taxonomic group that contains one or more phyla.
Which of the following is used to screen for carcinogenic potential of various compounds?
transformation testing
replica plating
Ames test
ELISA test
Answer:
Ames test
Explanation:
This is because Ames test is a test that uses bacteria strain i.e Salmonella typhimurium to check or assess of a chemical has carcinogenic effect of it. It uses mutagenicity of bacteria. It is a biological assay that test whether an a chemical can cause mutations in the dna of the test organisms. When mutagens are added and also liver enzymes, there would be a reverse mutation and this will lead to their growth
What are the correct genotype percentages?
OGG=25%, Gg=50%, gg=25%
O GG=0%, Gg=100%, gg=0%
GG= 75%, Gg=0%, gg=25%
You are given a sequence of DNA and told that it is human. You are asked to find out its identity and whether it has similarity to sequences in other organisms. Please describe the bioinformatics tool, the database, and the procedure you would use to find such information. Give two possible outcomes of your search.
Answer:
The summary of the question has been summarized throughout the explanation segment below.
Explanation:
BLAST seems to be the most commonly utilized sequencing correlation platform. BLAST seems to be a methodology as well as an operation for the comparison of primary physiological sequence data. Instead with BLAST, we're going enough to get some successfully predicted gene mutation new variant. Look for, racial identity percentage points and sometimes even E Value percentage points lookup pattern.This should start giving extensive information such as which life forms the component has been transcribed. And we'll get documentation about everything from the gene, exon, and so on., connection to the enzyme interpretation.
Hello all. I really need help immediately with this question. Here is the question! Explain how these terms work together IN TRANSLATION: mRNA, tRNA, codon, amino acid, protein
Thank you sm for the help :)
Answer:
Translation takes place in 3 main steps: initiation, elongation and termination.
In initiation, the ribosome binds with the mRNA strand and a initiation complex forms. An initiator tRNA molecule brings the first amino acid, methionine. It binds with the start codon using its anticodon, UAC. The large ribosomal subunit then binds to the small ribosomal subunit.
In elongation, more charged tRNAs bring the amino acids to be added on the growing polypeptide chain. Elongation continues until the ribosome encounters the stop codon.
In termination, a release factor binds to the stop codon, causing the polypeptide to be released from the ribosome. The ribosomal subunits separate from the mRNA and from each other. The polypeptide undergoes folding to form secondary and tertiary structures to become a fully-functional protein.
Notes:
• Translation is the process by which a protein is synthesized from mRNA.
• mRNA: messenger RNA
• tRNA: transfer RNA
• codon: A 3-nucleotide sequence that codes for a specific amino acid. For example, AUG codes for methionine.
In actuality, the DNA sequence of the human genome is NOT random. Some sequences, including some very large sequences, are repeated many times throughout the human genome. Write two ideas you have for how this fact complicates the use of CRISPR gene-editing technology in humans.
Answer:
repeated DNA sequences decrease the target specificity of the CRISPR-Cas system, and may lead to off-target effects
Explanation:
The CRISPR-Cas system is a versatile and powerful tool for gene editing. This gene-editing tool consists of a single guide RNA (sgRNA) that guides the Cas endonuclease protein to the appropriate genomic locus, where Cas generate a double-strand break in the DNA and thus induces DNA repair either by Non-homologous end joining (NHEJ) or Homologous Recombination (HR) repair pathways. The sgRNA consists of a 17-20 nucleotide sequence which is complementary to the target DNA, this sequence is called crispr RNA (crRNA). The existence of repeated DNA sequences hampers the specificity of the CRISPR-Cas tool because a particular sgRNA is able to guide Cas9 to different genomic loci that have the same (repeated) nucleotide sequence complementary to the crRNA. In consequence, repeated DNA sequences may lead to undesired off-target effects, i.e., unintended cleavage (and therefore unintended mutations) at untargeted genomic sites.
Question 18 of 20 :
Select the best answer for the question.
18. How has the use of herbicides affected agricultural productivity?
O A. Fewer pesticides are needed because of parasitoids.
OB. Fewer people are needed to weed because of herbicides.
O C. Fewer crops are produced because of herbicides.
O D. Fewer crops are organic because of the use of Bt toxin.
O Mark for review (Will be highlighted on the review page)
Answer:
B. Fewer people are needed to weed because of herbicides.
Explanation:
Herbicides are chemical substances specifically used to control the widespread growth of weeds i.e unwanted plants. Using herbicides has been useful in eradicating the weeds that pose a great threat to agricultural productivity.
Since chemical control (herbicides) has proven to be a faster and effective method, fewer people are needed to involve in the physical control of weeds i.e. weeding. Hence, the use of herbicides has affected agricultural productivity by helping to reduce the amount of laborers.
What is the wavelength of an X-ray whose frequency is 2.0 × 1018 Hz? Hint: An X-ray is an electromagnetic wave, so its velocity is equal to the speed of light (3.0 × 108 m/s).
A.
1.5 × 10-10 m
B.
3.0 × 10-8 m
C.
6.0 × 10-9 m
D.
0.6 × 10-11 m
Answer:
A. 1.5 × 10-10 m
Explanation:
Given the following data;
Frequency = 2.0 × 10^18 Hertz.
Speed of light = 3.0 × 10^8 m/s
To find the wavelength;
Wavelength = speed/frequency
Substituting into the equation, we have;
Wavelength = 3.0 × 10^8/2.0 × 10^18
Wavelength = 1.5 × 10-10 meters.
What will happen to a plant if put in a box with only one hole?
Answer:
does it have water and sun through the hole?
Explanation:
if not it will die. if you specify i will edit my answer.
Answer:
yes if watered but it would have drainage problems
Explanation:
hope this helps sorry if it doesn't have a good rest of your night :) ❤
true or false internal regulations refers to how organisms reproduce themselves?
Answer: False
Explanation: Defines the procedures to be followed for the administrative operation and organization of the institution, the implementation of rules, and the imposition of sanctions on those who violate or do not fully conform to relevant laws.
What is this the definition of?
Reaction that disassembles polymers and absorbs water.
Answer:
Hydrolysis reactions use water to breakdown polymers into monomers and is the opposite of dehydration synthesis, which forms water when synthesizing a polymer from monomers. Hydrolysis reactions break bonds and release energy.
1. Discuss how the study of fossils provides strong evidence for evolution. (13.2 and 13.3)
Answer:
in fossils we see homologous structures that suggest a common ancestor.
By looking at the bones of the arms and comparative anatomy we see the similar structure and function that is retained.
When looking at other animals like birds we see Analogous structures that look similar but have a different function (flying).
Finally we see Vestigial structures which are structure that no longer function as they once were used for. An example of this is the coccyx (tail bone in humans) compared to tails in dogs, cats, monkeys, etc.
Explanation:
similarties and differences between the three fungi divisions
Explanation:
It's little bit short but it will help you and you can get full mark hope it will help you! Have a nice day. ^_^
can you help with this
Thank you
Answer:
B. II and III
Explanation:
hope it helps
Enzyme that links together the growing chain of RNA nucleotides during transcription using DNA strand as a template
Answer: Your answer should be: RNA Polymerase
Explanation: Have a great day my friend :D
Explain how organisms can compete for abiotic factors in an ecosystem.
Answer:
An organism's niche includes food, shelter, its predators, the temperature, the amount of moisture the organism needs to survive, etc. When two or more individuals or populations try to use the same limited resources such as food, water, shelter, space, or sunlight, it is called competition.
Crickets "chirp" by rubbing their wings or legs over each other. This phenomenon is known as stridulation. It is a means by which male crickets "call" to females to communicate their interest in mating. Frequency refers to the number of chirps that crickets produce during a period of time. Some have suggested that you can tell the temperature and the humidity based on how fast crickets chirp.
Required:
a. What is the effect of temperature on the frequency of cricket chirping? As the temperature rises, the cricket chirp occurs more rapidly therefore increasing.
b. What is the effect of humidity on the frequency of cricket chirping? As the humidity rises, the cricket chirp frequency occurs more rapidly therefore increasing.
Answer:
a. As the temperature rises, the cricket chirp occurs more rapidly therefore increasing. It is correct.
b. As the humidity rises, the cricket chirp frequency occurs more rapidly therefore increasing. It is incorrect. The increase in humidity does not affect the chirp frequency in crickets.
Explanation:
As temperature increases, the frequency of cricket chirp increases too. After listening to the audios, we can see that in the first audio, where the temperature is 14° Celcius, the frequency is 24 chirps in 15 seconds. In the second audio, with 19° Celcius, the frequency is 28 chirps in 15 seconds. In the last audio, where the temperature is 24° Celcius, the chirp's frequency is 34 chirps in 15 seconds. In conclusion, if the temperature increases, the chirps' frequency increases too.
As humidity increases, the frequency of the chirp does not. In the three audios, the number of chirps in 15 seconds was 20. We can conclude that humidity does not affect the frequency of chirps frequency.
Of the following statements, which is not a common myth regarding hypnosis?
A. Hypnotized people can relive the past.
B. Hypnotized people are less focused on their surroundings.
C. Hypnotized people lose control of themselves.
D. Hypnotized people can remember the past accurately.
Please select the best answer from the choices provided
Answer:
D
Explanation:
The common myth regarding hypnosis is Hypnotized people can remember the past accurately.
Who are hypnotized people?Focused attention (the selective attention/selective inattention hypothesis, SASI), decreased peripheral awareness, and an improved ability to respond to suggestion are all characteristics of hypnosis in humans.
Conflicting ideas exist to explain hypnosis and related phenomena. According to beliefs about altered states of consciousness, hypnosis is an altered mental state or trance characterized by a heightened level of awareness beyond that of ordinary consciousness.
A person is reported to have improved focus and concentration while under hypnosis, as well as a greater receptivity to suggestions.
Therefore, The common myth regarding hypnosis is Hypnotized people can remember the past accurately.
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Select all that are true regarding ATP cycling
A. ATP is formed from ADP and phosphate
B. Energy for ATP synthesis comes from the oxidation of glucose and other fuel molecules
C. ATP hydrolysis is an endergonic reaction
D. Oxidation of ATP can be used for performing endergonic reactions in the cell
Answer:
A, B and D are correct
Explanation:
Adenosine diphosphate (ADP) can form a bond with a phosphate group to form Adenosine triphosphate (ATP), which is the most abundant energy carrier molecule in cells. An endergonic reaction is a chemical reaction where there is a net input of energy, while an exergonic reaction generates energy. ATP hydrolysis releases energy (conversely to ATP synthesis that requires an input of free energy), and therefore ATP hydrolysis is an exergonic reaction. ATP hydrolysis releases around 7.3 kilocalories per mole. In a coupled reaction, the energy released by ATP hydrolysis is used by the cell to carry out endergonic reactions in an exergonic manner (e.g., glucose phosphorylation, which is an energetically unfavorable reaction).