Answer:
RNA
Explanation:
A ribonucleic acid (RNA) is one of two types of nucleic acid made up of nucleotide subunits. RNA is a single stranded molecule unlike DNA, which is double stranded. The nucleotide unit of nucleic acids is composed of a nitrogenous base (Adenine, Guanine, Cytosine and Thymine/Uracil), a pentose sugar (ribose and deoxyribose) and a phosphate group.
One of the key structural differences between RNA and DNA is that RNA contains URACIL nitrogenous base instead of THYMINE in DNA.
According to this question, a scientist finds that another molecule has contaminated the mixture he is working with in the lab. When he analyzes its chemical structure, he finds that it contains uracil, is single stranded, and contains phosphate. This illustrates that the contaminating molecule is a specific type of nucleic acid called RNA.
Answer:
rna
Explanation:
Las semillas de las plantas, especialmente las más consumidas en nuestra dieta como el trigo, el maíz, el arroz y otros cereales o las lentejas, los porotos y otras legumbres, tienen un depósito de almidón que está destinado a alimentar el embrión en las primeras etapas del desarrollo, hasta que esté en condiciones de hacer la fotosíntesis por sí solo. ¿Con qué función de los lípidos se relaciona esta adaptación? Justificar.
Answer:
lol I dont know the answer
First, you introduce to the parents the importance of karyotype test, by describing its ability to detect two broad categories of abnormalities in chromosomes, (1)______________________ and (2)_______________________. You provide a few examples of genetic disorders that can be caused by chromosomal abnormalities, such as (3)_________________________ and (4)_____________________. Some parents would like to know what is the main cause of these genetic disorders. Without going into too much detail, you explain to them that chromosomal abnormalities are usually caused by (5) ____________________ in meiosis I and meiosis II, when the homologous chromosomes or sister chromatids fail to separate during meiotic cell division.
Answer:
Abnormalities in Chromosomes
1. Numerical
2. Structural
3. Down Syndrome
4. Turner Syndrome
5. Disorder or Error
Explanation:
Numerical chromosome abnormalities occur due to extra or missing chromosomes. Structural chromosome abnormalities occur due to the irregular formation or rearrangement of the chromosomal DNA, normally called translocation. Down syndrome occurs with extra chromosomes, more than 46. Turnover syndrome results from partial or missing X chromosomes, less than 46.
1. ¿Cuáles son las células que contiene la retina?
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.
g Jack fell down and broke his crown. He broke the most anterior bone connected to the coronal suture. What LETTER is this, and what is the NAME of this bone
A particular cross gives a modified dihybrid ratio of 9:7. What phenotypic ratio would you expect in a testcross of the fully heterozygous F1 crossed with the fully recessive type
Answer:
3:1
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
In the experiment on stimulation of the isolated sciatic nerve, a compound action potential is produced. This represents _______
Answer: A summed electrical activity of all axons in the nerve
Explanation:
During the experiment with regards to the stimulation of the isolated sciatic nerve, a compound action potential is produced. It should be noted that this represents the summed electrical activity of all axons in the nerve.
Here, the summed electrical activity of all axons in the nerve represents the sum of the potentials that were recruited in the experiment.
Which of the following are structures of the
lymphatic system? Check all that apply.
Heart
Bone Marrow
Thymus
Spleen
Blood Vessels
Tonsils
Adenoids
Answer:Bone Marrow
Thymus
Spleen
Explanation:Bone Marrow
Thymus
Spleen
The following are structures of the lymphatic system -
Bone MarrowThymusSpleenTonsilsAdenoidsThe lymphatic systemis a network of tissues, vessels, and organs.these structures work together to move a colorless, watery fluid called lymph back into your circulatory system (your bloodstream).The lymphatic system has the following structures:lymph nodes,spleen,thymus the lymphatic tissue found in the small intestine (Peyer's patches)adenoid tonsils,palatinetubal tonsilsThus, the following are structures of the lymphatic system -
Bone MarrowThymusSpleenTonsilsAdenoidsLearn more:
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Write an experiment to show that sunlight is necessary for photosynthesis.
Answer:
Explanationwe have two or three plants, they both get the same water every day they both get the same amount of soil and fertilizer, one is without sunlight and one is with, after a 2 weeks our results will be found
hope this helps
What makes up the mantle
Absolute zero temperature is not the zero energy temperature.explain
The absolute zero is the temperature at which molecular motion ceases i.e translational kinetic of molecules become zero, but the molecules possess the potential energy, according to the Kinetic theory of gases. Thus, the absolute zero is not the zero energy temperature.
Different types of cells have different numbers and types of
O nuclei
O DNA
O cell membranes
O organelles
Modelizar un ecosistema colocando los niveles tróficos y las relaciones en la red alimentaria
Answer:
Ejemplo ecosistema y su cadena trófica:
- Ecosistema: llanura (campo de maíz)
- Productor primario: plantas de maíz
- Consumidor primario: Ratones
- Consumidor secundario: Aves rapaces
- Microorganismo descomponedor: bacterias
Explanation:
En una cadena trófica o cadena alimentaria de un ecosistema, cada nivel obtiene la energía necesaria para sustentar la vida a partir del nivel inmediatamente anterior, mientras que los productores primarios son aquellos organismos que hacen ingresar la energía al ecosistema. Por otra parte, los descomponedores son organismos que se alimentan de los restos de animales y plantas, mediante su descomposición, obteniendo de ellos energía y materia hasta transformarlos en materia inorgánica. En el ejemplo arriba citado, las plantas de maíz representan los productores primarios los cuales producen energía y materia orgánica requerida para sustentar el ecosistema mediante el proceso de fotosíntesis. En segundo lugar, los ratones, como así también otros organismos herbívoros, representan los consumidores primarios los cuales conforman el segundo nivel trófico de la cadena alimentaria. En tercer lugar, los animales carnívoros que se alimentan de consumidores primarios (como por ejemplo, aves rapaces) representan el tercer nivel trófico, y así sucesivamente niveles superiores en el caso que existan depredadores mayores en el ecosistema. Finalmente, bacterias y otros organismos (por ejemplo, hongos, lombrices, algunos insectos, etc) representan los descomponedores los cuales se alimentan de restos orgánicos en descomposición, transformándolos de este modo en compuestos inorgánicos que ingresan nuevamente al ecosistema.
how does hair appear on the head
Explanation:
Blood from the blood vessels in your scalp feeds the root, which creates more cells and makes the hair grow. The hair gets pushed up through the skin as it grows, passing an oil gland along the way.
Answer:
Hair grows by forming new cells at the base of the root. These cells multiply to form a rod of tissue in the skin. The rods of cells move upward through the skin as new cells form beneath them. As they move up, they're cut off from their supply of nourishment and start to form a hard protein called keratin.
The coding RNA in a cell at particular time is comprised of
A. total mature mRNA
B.whole RNA
C. hnRNA
D.4% of total coding RNA
A human cell with an unknown type has 23 chromosomes. Which of the following types of cells can the unknown be?
Skin cell
Sperm cell
Cardiac cell
Intestinal cell
Answer:
cardiac cell
Explanation:
A human cell with 23 chromosomes is sperm cell.
What is cell?"A cell is the structural and functional unit of life."A cell has specialised structures called organelles which perform various functions.Nucleus is an organelle which has a thread like structure called chromatin fibres which condenses to form chromosomes.What is chromosome?Chromosomes (made up of thin chromatin fibre) contains genes which is a heredity unit (carry genetic information from parents to offspring).Human has 23 pairs of chromosomes (total 46 chromosomes) in all of its cell except for the s ex cell, which is haploid i.e., only 23 chromosomes is present.Male s ex cell is called sperm cell and female s ex cell is called egg cell each havin 23 chromosomes.
Hence, the correct answer is: Sperm cell.
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do both plant cells and prokaryotic cells have 70S ribosomes
Which is true if energy in ecosystem
Explanation:
energy flows in only one direction through an ecosystem.
9.
I've been called the storage tank
By those with little taste
I'm a sack filled with water,
Food, enzymes, and waste
What am I?
A)Golgi Body (Complex)
B)Endoplasmic Reticulum
C)Nucleus
D)Ribosomes
E)Cell membrane
F)Cell wall
G)Vacuole
H)Lysosomes
I)Vesicles
J)Chloroplast
K)Chromosomes
L)Mitocondria
Answer: G)Vacuole
Explanation:
G)Vacuole is the answer. Hope this helps!
what are the biological structures
Answer:Biological structures are able to adapt their growth to external mechanical stimuli and impacts. For example, when plants are under external loads, such as wind force and self-weight, the overloaded zones are reinforced by local growth acceleration and the unloaded zones stop growing or even shrink. Such phenomena are recorded in the annual rings of trees. Through his observation of the stems of spruce, K. Metzger, a German forester and author, realized that the final goal of the adaptive growth exhibited by biological structures over time is to achieve uniform stress distribution within them. He published his discovery in 1893.12 A team of scientists at Karlsruhe Research Centre adopted Metzger's observations and developed them to one single design rule: the axiom of uniform stress. The methods derived from this rule are simple and brutally successful like nature itself. An excellent account of the uniform-stress axiom and the optimization methods derived from it is given by Claus Mattheck in his book ‘Design in Nature’.13 The present study utilizes one of these methods, stress-induced material transformation (SMT), to optimize the cavity shape of dental restorations.
Explanation:
Answer:
Structural biology is a branch of molecular biology, biochemistry, and biophysics concerned with the molecular structure of biological macromolecules (especially proteins, made up of amino acids, RNA or DNA, made up of nucleotides, and membranes, made up of lipids), how they acquire the structures they have, and how alterations in their structures affect their function.
Biological structures are able to adapt their growth to external mechanical stimuli and impacts. For example, when plants are under external loads, such as wind force and self-weight, the overloaded zones are reinforced by local growth acceleration and the unloaded zones stop growing or even shrink. Such phenomena are recorded in the annual rings of trees. Through his observation of the stems of spruce, K. Metzger, a German forester and author, realized that the final goal of the adaptive growth exhibited by biological structures over time is to achieve uniform stress distribution within them. He published his discovery in 1893.12 A team of scientists at Karlsruhe Research Centre adopted Metzger's observations and developed them to one single design rule: the axiom of uniform stress. The methods derived from this rule are simple and brutally successful like nature itself. An excellent account of the uniform-stress axiom and the optimization methods derived from it is given by Claus Mattheck in his book ‘Design in Nature’.13 The present study utilizes one of these methods, stress-induced material transformation (SMT), to optimize the cavity shape of dental restorations.
Anyone have a clue what dog breed this is?
Answer:
weenie dog but the scientific name for it is a Dotson
What happens to proteins with no signal sequence that are made in the cytosol? Question 3 options: They are taken up by lysosomes. They are degraded by proteases. They are returned to their organelle of origin. They are secreted. They remain in the cytosol.
Answer:
The correct answer is: They remain in the cytosol.
Explanation:
Eukaryotic proteins are made through a process called Translation, which always starts at the cytosol (except for the proteins that are made in the mitochondria).
While Translation is taking place, the peptide that is being synthesized is checked for molecular tags that will lead to a re-routing to another destination: proteins that have an amino sequence called 'signal peptide' will be sent to the endoplasmic reticulum for its translation to continue - the proteins that go this route are meant to be part of the endomembrane system, after that they can be bounded to the ER, the Golgi apparatus or the lysosomes.
Unlike the proteins mentioned before, there are proteins that will have no signal peptide - this means that they are meant to finish Translation in the cytosol. Some of these proteins will acquire a signal tag that will lead them to the nucleus or the mitochondria, for example, but if they don't they will stay permanently in the cytosol to perform their tasks in that place.
What trait are narcissists likely to have that is associated with leader emergence but not effectiveness
Answer:
Agreeableness.
Explanation:
Agreeableness is the trait that narcissists likely to have which is negatively corelated and is associated with leader emergence but not effectiveness. The tendency toward self-interest would attract the person into follow his or her own goals rather than the interests of their group or company. The term Narcissism originated from Greek mythology, where a young man whose name is Narcissus fell in love with his own image reflected in a pool of water so that's why selfness and self interests refers to Narcissism.
Look at the scientific names for the two organisms below:
Felis domesticus
Felis bengalensis
What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.
Answer:
B. The organisms are different subgroups of the same species.
QUESTION:-
Felis domesticus (Domestic CAT)
Felis bengalensis (Leopard Cat)
What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.
ANSWER:-
FIRST PART IS THE GENERIC PART ( genus name )
SECOND PART IS THE SPECIFIC NAME ( specific epithet )
ATQ:-
AS THE GENERIC OR GENUS NAME SAME SO THEY BELONG TO SAME GENUS
BUT DUE TO DIFFERENT SPECIFIC NAME OR SPECIFIC EPITHET WHICH SHOWS THAT THEY BELONG TO DIFFERENT SPECIES .
SO URE ANSWER IS PART C->
C. The organisms are different species but belong to the same genus.in what direction do winds blow?
a. from the northeast to the southwest
b.from the southwest to the northeast
c. from the low pressure areas to high pressure areas
d.from high pressure areas to low pressure areas
Answer:i don’t know
Explanation:i don’t know
Answer:
a. from the northeast to the southwest
Answer this question properly
Natural selection is most likely to be the cause of a change in a population's
allele frequencies when:
A. the ecosystem experiences few disturbances,
B. the population drops below its carrying capacity.
C. the predators are removed from the ecosystem,
D. the population has reached its carrying capacity.
PLEASE HELP URGENT
Answer:handheld c
Explanation:bend c smlOc
Place the steps for providing first aid for bleeding in the correct order.
Raise the wounded area above
Place a sterile bandage.
Clean the wound
Apply pressure
the heart
The steps of first aid during bleeding is as follows:
Raise the wounded area above the heartapply pressureclean the wound apply pressure.What is first aid?First aid is the immediate help or assistance given to Ana accident victim before the arrival of a medical doctor ofbthe person is taken to the hospital.
The steps of first aid during bleeding is as follows:
Raise the wounded area above the heartapply pressureclean the wound apply pressure.In conclusion, the proper steps taken for first aid will prevent bleeding.
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Answer:
clean the wound
Place a sterile bandage
Apply pressure
Raise the wounded area above the heart
Explanation:
this is the correct answer on Edge
II. Sequencing Directions: Arrange the procedure/steps to fold a banana table napkin by writing 1 to 8 on the blank before the number.
Repeat the last step with the left side, folding the left tip up to the far corner, creating a diamond shape with a seam running down the center.
Fold the right end up to meet the far corner, ensuring the edge of this new fold lays on the centerline as shown.
Stand it up and tug at it where needed to even it up and out. If your napkins are too limp, then think of starch as a napkin and make them good and stiff round it.
Lay the napkin face down in front of you. Curl the left and right sides of the napkin up so they meet in the middle and tuck one into the other.
Fold the bottom of the napkin up about 2/4's of the way and press this fold down well. Fold the napkin in half diagonally. Orient the napkin so the open ends point away from you.
Fold the smaller triangle down so the point rests on the near edge of the napkin. Press.
Can you please answer it for me
Please if someone know
Explanation:
Lay a square napkin down on a clean work surface so that it's open all the way. Iron if needed.
STEP 2: FOLD IN DIAGONAL HALF
Grab a hold of the right hand corner nearest you and fold it over to meet the opposite upper left corner. Straighten out the edges so that they all meet up.
STEP 3: TURN IT
Turn the triangle so that the longest side is parallel to you and the table's edge.
STEP 4: FOLD IN
Fold the left corner in so that it sits JUST past the midway point of the long side of the triangle, like pictured.
STEP 5: FOLD IN AGAIN
Now repeat for the right hand corner.
STEP 6: FOLD OVER
Take the lower left corner and bring it in to the bottom midpoint of the now 'house' shaped napkin. Press the new left side fold down.
STEP 7: FOLD OVER AGAIN
Repeat on the right side.
STEP 8: FOLD UP
Take both bottom corners and bring them up to rest just below the top right corners. Press down the new folds.
STEP 9: CLOSE THE ENVELOPE
Take the top point of the envelope 'flap' and bring it down (or close it) to complete the envelope.
STEP 10: ADD A PERSONALIZED CARD
Use your envelope napkins to include a personalized 'letter' or card to each guest's plate. Some ideas for what this could be are:
holiday greeting card
menu
place card
family photos from past celebrations
holiday story or poem
coloring cards with pencil crayons for kids
game cards: trivia, scavenger hunt, etc
Review Questions
1. If a diploid eukaryotic cell contains 14 pairs of chromosomes for a total of 2n = 28, how
many chromosomes will be in the resulting products of cellular division if the cell
undergoes: mitosis?meiosis?
2. If a haploid eukaryotic cell contains 10 chromosomes for a total of n = 10. How many
chromosomes will be in the resulting daughter cells if this cell undergoes mitosis?
3. By what process do homologous chromosomes exchange portions of their DNA during
meiosis?
4. In what phase does the answer to #3 occur?
5. How many mature ova will be produced from each primary oocyte?
6. How many mature sperm will be produced from each primary spermatocyte?
7. Do the homologous chromosomes separate during meiosis I or meiosis II?
8. Do the sister chromatids separate during meiosis I or meiosis II?
9. What is a polar body?
10. List the phases of mitosis and briefly describe what happens in each phase:
Answer:
6==. During spermatogenesis, four sperm result from each primary spermatocyte, which divides into two haploid secondary spermatocytes; these cells will go through a second meiotic division to produce four spermatids
Enter the sequence of the DNA coding strand with a 5-3 polarity. DO NOT WRITE 5 OR 3 OR 5' OR 3' IN THE BOX!
Complete question:
Use the sequence below to answer the following questions
3’-ACGGATCCTCCCTAGTGCGTAATACG-5’
5’-TGCCTAGGAGGGATCACGCATTATGC-3’
1. Enter the sequence of the coding strand with a 5’-3’ polarity
Answer:
coding strand → 5´- GCATAATGCGTGATCCCTAGGCA -3´
Explanation:
When referring to the coding strand, we are talking about the sequence that turns to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.
The coding strand receives that name because it is the sequence that codes for each amino acid composing the proteins.
When the DNI molecule separates into two strands to form the transcription bubble, we can identify two separate segments: coding strand and template strand.
The coding strand goes in direction 5´ to 3´, while the complementary strand -template strand- grows in direction 3´ to 5´.
Whenever we have a DNI molecule and we need to determine which strand is the coding one, we just need to look for the presence/absence of start or stop codons.
So, in the exposed example we have two strands, but we do not know yet which one is the coding one.
Conventionally, the first strand is always the coding one. However, let us analyze it by using the presence/absence of codons.
First-strand:
3’-ACGGATCCTCCCTAGTGCGTAATACG-5’
let us write it is 5´to 3´direction
5´- GCATAATGCGTGATCCCTAGGCA -3´
now let us identify the start and stop codons in 5´⇒3´direction.
Start codon ⇒ ATGStop codon ⇒ TAA, TAG, TGA5´- GCATAATGCGTGATCCCTAGGCA -3´ ⇒ 1 start codon at the beginning
5´- GCATAATGCGTGATCCCTAGGCA -3´ ⇒ 3 Stop codons
Second strand: We will do exactly the same procedure
5’-TGCCTAGGAGGGATCACGCATTATGC-3’⇒ 1 start codon near the end
5’-TGCCTAGGAGGGATCACGCATTATGC-3’⇒ 1 stop codon at the beginning
What we did here was to identify in both provided strands, where the start and stop codons are placed. We can see that in the first strand we have the start codon near the beginning, while in the second strand we have it near the end of the sequence. From this information, we can assume that the first strand is the coding one. However, you need to know that some coding sequences do not have start and stop sequences, because they might correspond to a sequence in the middle of a gene.
So, the sequence of the DNA coding strand with a 5-3 polarity is
5´- GCATAATGCGTGATCCCTAGGCA -3´
