i’m so desperate pls help
Which letter in the diagram above represents a complete nucleotide?
Answers
Answer:
F
Explanation:
A nucleotide consists of a base, sugar molecule and phosphate group :)
Related Questions
ill give the star thingy PLEASE HELP ITS DUE TOMORROW
based on Mr. Kaku's assertion that knowing what the stars are made of is as easy as running starlight through a prism, use the CER method to explain the use of light to determine composition of a star in detail.
Answers
Answer: the answer is CER
Which of the following describes hemophilia?
O multiple-allele trait
O dominant trait
O sex-linked trait
O codominant trait
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What are two ways that meiosis contributes to genetic variation? How do these two ways lead to variation?
Answers
Answer:
During prophase of meiosis I, the double-chromatid homologous pairs of chromosomes cross over with each other and often exchange chromosome segments. This recombination creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.Hope this is fine for you!!Imagine que uma espécie de mamífero tenha pelagem branca ou preta, sendo a cor preta determinada por um alelo dominante B, e a cor branca, por um alelo recessivo b. Sabendo-se que se trata de uma dominância completa, responda: Em um cruzamento entre um macho e uma fêmea heterozigotos, quais os possíveis genótipos e fenótipos dos filhotes?
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Which of the images below depicts a healthy reef ecosystem?
Image A, B, C, or D?
Answers
Answer:
A is the answer i think because it has more reef
A man inherits dominant allele for the trait from father and recessive allele from mother. what trait will this man expressed which alleles will his sperm cell contain??
Answers
Answer:
Explanation:
The dominant trait, since he has a dominant and a recessive allele.
Sperm cells are haploid, meaning contains only one of the two alleles available, in a random fashion. Therefore on the average, half of his gametes (sperm cells) will have the dominant allele, and the other half will have the recessive allele.
Ogan kuzoeainy-
Diego Murilo G Image result for co
Learner's Dictionary
Continue with the same Punnett Square above. What would the
phenotypic frequencies of the offspring be? *
5 points
100%
75%
50%
25%
N/A
AA
O
Аа
O
Ο Ο
aa
o
O
Dark winged
O
Light winged
O
O
O
Answers
Answer: 100
Proteins are important food nutrients. A technician working at a food company is interested in the nutritional content of seeds/nuts. She runs a PAGE with samples from two different seed extracts. She runs multiple lanes of the staples. The gel is stained with Coomassie Blue. Seed extract No. 1 has three faint bands at 25, 30, and 35 kDa. Extract No. 2 has two bands at 25 and 35 kDa, and the bands are very dark. What might she conclude from her results about the nutritional value of the seed extracts
Answers
Answer: Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.
Explanation:
Proteins are molecules found in the cells of all living organisms. A protein is composed of monomers called amino acids linked together by peptide bonds. To analyze proteins, a technique called SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis) is used. This technique is used to separate proteins according to their electrophoretic mobility, depending on polypeptide chain length, molecular mass, post-translational modifications and other factors. SDS (sodium dodecylsulfate) is an anionic surfactant compound that breaks non-covalent bonds in proteins, denatures them causing these protein molecules to lose their native conformation and provides the polypeptide with a negative charge that is proportional to the chain length (the number of amino acids) and, therefore, to the molecular mass of the protein. The electrostatic repulsion created by the binding of SDS to the protein is one of the causes of the protein losing its native conformation, thus eliminating the differences in conformation of the different proteins to be separated in the gel.
An electric current is applied to the gel where the proteins are seeded, causing the negatively charged proteins to migrate through the gel in the direction of the anode (positively charged region). Short proteins will move more easily and faster through the pores of the gel, while larger proteins will find it more difficult to do so. After a certain time, the proteins will have migrated according to their size (measured in kDa or kiloDaltons). After electrophoresis, the gel should be stained with Coomassie blue or silver stain, allowing visualization of the separated proteins. After staining, the different proteins will appear as distinct bands on the gel. In addition, the higher the amount of a protein, the more intense the color of its band will be.
Extract No. 1 shows three bands: 25, 30 and 35 kDa. This means that it has three different proteins, each with a different molecular weight. Extract number 2 shows two bands: 25 and 35 kDa. It means that this sample has only 2 proteins. And being bands of higher intensity, we can say that there is more of each protein.
Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.
Ment. Mastery Test
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4
Select the correct answer from each drop-down menu.
Sally has a large yard around her house. How could she use that to live more sustainably?
Sally has a large yard around her house. She could do some
food scraps to avoid the use of chemical fertilizers.
y to grow her own produce and
with her
Reset
Next
Answers
Answer:
I don't know all of the answers in the menu, but I think that she could grow her own food, for one thing, and she could use the space to compost foods she doesn't eat for natural fertilizer.
Explanation:
I'm grabbing at straws here, I hope this answer helps.
Earth is tilted at a 23.5 degree angle. Explain how this causes the equator to be hot and the poles to be cold.
Answers
Answer:
sunlight
Explanation:
at the angle the earth is at, sunlight hits the equator almost directly, as well as the equator being closer to the sun.
Why do structural similarities between living things point to common ancestry?
Answers
Explanation:
Comparative anatomy is the study of the similarities and differences in the structures of different species. Similar body parts may be homologies or analogies. Both provide evidence for evolution. ... The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor.
Which of the options below would be most likely to happen if snails (animals) were added to a clear container (so sunlight can get through) that had a lid placed on top?
1) ATP levels would decrease
2) O2 levels would decrease
3) glucose levels would increase
4) CO2 levels would decrease
Answers
The container in which the snails are found will experience a decrease in oxygen level.(Option 2)
What are animals?Animals require to take in oxygen in order to breakdown complex food materials during the process of metabolism. Unlike plants that take in carbon dioxide, animals take in oxygen.
Thus, the container in which the snails are found will experience a decrease in oxygen level.
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What are the two forms of stored chemical energy produced in the light reactions of photosynthesis?
A. ATP and NADPH
B. ATP and carbon dioxide
C. water and NADPH
Answers
Answer:
A. ATP and NADPH
Explanation:
The two forms of stored chemical energy is ATP (Adenosine Triphosphate) and NADPH (Nicotinamide Adenine Dinucleotide Phosphate).
Answer:
A. ATP and NADPH
Explanation:
The light reactions capture energy from sunlight, which they change to chemical energy that is stored in molecules of NADPH and ATP. The light reactions also release oxygen gas as a waste product.
what is annual, biennial and perennial?
Answers
The process of animals relocating to different environments in response to seasonal changes is called:
Answers
Explanation:
Many birds, such as geese, seasonally fly to warm places when the weather gets cold. They then return when the weather warms. This process is called migration. ... Migration enables many animals to move to places where it is easier for them to survive.
Some functions of cellular organelles are given below.
a)Protein synthesis
b)Cellular respiration
c)Detoxify certain compounds
The organelles that perform the above functions are given respectively in which option?
(a) Mitochondrium,
Ribosome, Plastid
(b) Ribosome,
Mitochondrium, Endoplasmic
Reticulum
O (c) Ribosome, Golgy body,
Endoplasmic reticulum
(d) Ribosome, Plastid,
Endoplasmic reticulum
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Where are producers located on the energy pyramid?
Answers
Answer:
At the beginning of the pyramid
Answer:
At the ground state.
explanation:
¿Qué es y a qué se dedican las ciencias naturales?
Answers
Answer:
can u put that in english plz bc i dont understand you
Explanation:
Answer:
sorry I can't understand
but have a great day lol
Human skin cells are specialized to do what
Answers
Answer:
The primary function of these cells is to create the barrier between you and the rest of the world. Keratinocytes produce the protein called keratin, and by the time the cells have been pushed up from the basement membrane, they are mostly sacks filled with keratin.
Explanation:
please answer this for me
Answers
Answer:
THE ANSWER IS D!!!!!!!!!!!
Explanation:
1. Macromolecules are the biological molecules necessary for life. Cells need macromolecules for different functions from energy storage to membrane transport Each class of macromolecule serves a different function. Which macromolecule would serve as an energy source for the cell and is used as a component in the cell wall of plants ?
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
(NEED HELP ASAP PLEASE)
Answers
Cellulose and starch are macromolecule polysaccharide carbohydrate made of glucose chains. It stabilizes plant cell walls and provides energy. Therefore , option (A) is correct.
What are carbohydrates?Carbohydrates are renowned for their crucial function in plants, which is to provide key sources of energy and carbon skeletons for organic compounds and storage components. Carbohydrates are formed through the process of photosynthesis.
Starches and cellulose are both types of carbohydrates that belong to the larger class of polysaccharides since they are made up of long chains of glucose molecules. Although they are comparable, the human body is only able to make use of starches as a source of energy, whereas cellulose provides structure to plant cell wall.
Learn more about carbohydrates, here:
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In the chloroplast, where does the light independent reaction take place?
Answers
Answer:
chloroplast stroma
explaination:
Once the light reactions have occurred, the light-independent or "dark" reactions take place in the chloroplast stroma.
hope this helps!
Which hormone only has an effect in females?
oxytocin
prolactin
growth hormone
Answers
Answer:
Oxytocin
Prolactin
Explanation:
Oxytoxin ( love drug ) suppresses Uterus and breasts.
Prolactin simulates milk
Dimples are dominant, no dimples are recessive. Mr. Dowling is heterozygous for dimples, and Mrs. Dowling is also heterozygous for dimples. What are the possibilities of their offspring? Use the letter D punnet graph
Answers
pls help I'm not sure of the answer I feel like it's
gg X GG
Answers
The left parent contains the white (recessive) gene, while the right parent contains the gray (dominant) gene.
Which group of organisms in this food web has the greatest available energy?
Answers
Answer:
Producers
Explanation:
producers make up most life on earth, be that of plants or algae so they have the greatest amount of available energy overall.
what is mechanism of photosynthesis
Answers
An estuary is _______.
a.
a freshwater biome
b.
an area with a low concentration of minerals and nutrients
c.
characterized by deep water
d.
an ecotone
Please select the best answer from the choices provided
D IS CORRECT
Answers
Answer:
An estuary is _______.
a.
a freshwater biome
which statement best differentiaates between weather and climate
Answers
Answer:
Weather refers to short-term atmospheric fluctuations, whereas climate explains the weather in a certain place over a long period of time.
Explanation:
Globally, weather conditions are measured at hundreds of locations every day of the year by observers and automated stations. Some remarks are made every hour, others perhaps once a day. In the long run, these weather observations allow us to quantify average long-term conditions, giving an insight into the climate of the region.
Systemic weather records have been recorded for over 140 years in various places in the United States. We can recognize patterns and trends with these long-term records. And it's our mission to collect, monitor, and arrange these data, as the official repository of the Nation for environmental data, for scientists, decision-makers, and you online.
Cuando una celula se va a dividir, la cromatina se contrae y compacta y forma estructuras como la que se ve al lado. Diga qué nombre reciben estas estructuras y cuantas hay en una célula humana
Answers
Answer:
cromosomas
Explanation:
Los cromosomas son moléculas lineales de ADN que contienen parte o todo el material genético de un organismo. El ciclo celular se divide en dos etapas: 1-interfase o etapa de 'no división' y 2-división celular. Durante la interfase, las fibras de cromatina no poseen un grado de condensación suficiente como para hablar de cromosomas. Durante la primera etapa de división celular (es decir, durante la profase), las fibras de cromatina se condensan para formar estructuras compactas conocidas como 'cromosomas' los cuales serán distribuidos entre células hijas. Las células somáticas de los seres humanos son diploides (2n = 46 cromosomas), esto significa que contienen 23 pares de cromosomas homólogos los cuales se alinean durante la metafase de la mitosis en la placa ecuatorial de la célula para ser distribuidos equitativamente entre células hijas durante las fases posteriores del ciclo celular (anafase, telofase y citocinesis). Por otra parte, las células germinales o gametos (espermatozoides masculinos y los óvulos femeninos) son haploides (n = 23 cromosomas) las cuales contienen un sólo set completo de cromosomas.
