Answer:
a. The letters Na with one dot
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.
Valency can be defined as a measure of the combining power of a chemical element with other atoms to form a molecule or chemical compound.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Thus, valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Sodium is a chemical element that is found in group (1) of the periodic table and as such it has 1 electrons in its outermost shell. Also, the chemical symbol for Sodium is Na and it has one (1) valence electron.
A Lewis structure can be defined as a structural representation of an atom or molecule by using a dot to show the position and distribution of electron(s) around the atom or molecule.
Hence, the letters Na with one (1) dot is a correct Lewis structure diagram for Sodium (Na) because it has just one (1) valence electron in outermost shell.
For example, the Lewis structure diagram for Sodium (Na) is •Na.
Answer:
Na with 1 dot
Explanation:
i took the test
Which population is more difficult to count during a survey of biodiversity?
O A clumped population
O A uniform population
A mobile population
O A small population
Answer:
Mobile population
Explanation: I got it right
A bacterial cell wall is composed of: A) A polysaccharide consisting of a single type of monosaccharide unit and cross-linking oligopeptides. B) A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides. C) A polysaccharide consisting of 3 types of monosaccharide units and cross-linking oligopeptides. D) Two different polysaccharides and 1 type of oligopeptide, which are cross-linked.
Answer:
B) A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides.
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
Also, a unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
A bacterial cell is made up of peptidoglycan and its main function is to maintain the shape of a cell while preventing it from bursting due to osmotic pressure. Also, the bacterial cell inhibits the passage of larger molecules but allows the free movement (passage) of smaller molecules in the body of a living organism.
Basically, bacterial cell wall comprises a polysaccharide that's typically made up of two (2) types of monosaccharide units and cross-linking oligopeptides.
Todos los miembros de dicha familia tienen simpatía por las mismas ideas políticas
Answer:
¿todos los miembros de dicha familia tienen simpatia por las mismas ideas políticas? En las últimas elecciones presidenciales, ¿todos los miembros de dicha familia votaron por el mismo partido?¿Puedes preguntarles cómo votaban los integrantes de esa familia hace veinte años, y hace cincuenta años? ¿Qué ha cambiado? Escribe en tu cuaderno tus averiguaciones
Explanation:
Mi familia tiene diferentes ideales políticos y por eso votaron por diferentes partidos, antes el proceso era manual
En las elecciones actuales les he preguntado a los miembros de mi familia y no todos votaron por el mismo partido político unos creen en uno de los partidos políticos y otros creen en otros. Por lo tanto no todos simpatizan con las mismas ideas políticas
Anteriormente se votaba por medio de un papel escrito, entonces el proceso es mucho más lento y menos automatizado que con maquinas
No, cada familiar tiene una idea política distinta.
-no votaron por el mismo partido político pues siempre algunos presidentes hacen promesas y no las cumplen.
-las votaciones siempre las han realizado por numero de DUI, en institutos o en las calles frente a las alcaldías, tenían que buscar el numero de urna en la cual estaban asignados.
-el cambio a sido la tecnología y el voto residencial, pues con la tecnología se ha hecho mas fácil el cuento de los votos y el voto residencial a permitido que se les facilite asistir al centro de votación.
mapa mental sobre El origen de las especies
El origen de las especies, cuya primera edición apareció en 1859, es el libro más conocido de El biólogo británico Charles Darwin. En el libro, Darwin expone su teoría de la evolución:
Afirma que toda la vida en la Tierra tiene un ancestro común. Que la selección natural es el mecanismo principal para la evolución de las especies.El libro está considerado como una de las obras científicas más importantes de la historia. Causó revuelo en el momento de su publicación porque atribuyó la riqueza de la forma de vida en la Tierra a un proceso mecánico más que a una inteligencia sobrenatural. Es cierto que otros habían sugerido previamente que podría haber cosas como la evolución o la selección natural, pero "El origen de las especies" es el primer trabajo que extrae la mayor consecuencia de estos conceptos.
Aprende más acerca de este tema en https://brainly.com/question/16994577.
What does an Electrocardiogram do?
A. Measures the electrical activity of a heart by measuring the current in the skin above it.
B. Pill that contains 3 grams of electrochemical material that helps keep the electrical current in the heart balanced.
C. Measures how much electrical current can be passed through a heart before it stops beating.
D. Restarts the heart by sending an electrical pulse through it.
Answer:
It actually measures the electrical activity
Explanation:
They are sticky wires that they put on your arms and chest etc
Electrocardiogram measures how much electrical current can be passed through a heart before it stops beating. The correct option is C.
What is electrocardiogram?An electrocardiogram is a simple test that can be employed to check the rhythm and electronics activity of your heart. Sensors connected to the skin detect the electrical signals generated by your heart every time it beats.
The electrical signals in the heart are recorded by an electrocardiogram. It's a prevalent and painless test for detecting heart problems and monitoring heart health.
An electrocardiogram, also known as an ECG, is frequently performed in a doctor's office, clinic, or hospital room.
It is a heart electrogram, which is a chart of voltage over time of the electrical activity of the heart recorded with electrodes placed on the skin.
Thus, the correct option is D.
For more details regarding electrocardiogram, visit:
https://brainly.com/question/11417041
#SPJ5
A pesticide tolerance refers to the a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace. b. ability of the liver to detoxify a pesticide c. toxicity of the pesticide in the laboratory d. number of pests that are killed by a selected dose of the pesticide
Answer:
a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.
Explanation:
Pesticides are chemical substances used to get rid of or kill pests that attack crops on farmlands. These pesticides, although help the farmer to get rid of his pest problem and likely have an increase in yield, are dangerous to human and animal health if consumed.
As set up by the Environmental Protection Agency (EPA), pesticide tolerance is the amount or quantity of pesticide chemical that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.
Explain the characteristics scientists use when observing organisms and placing them in the six kingdoms .
mention 10 forest trees and their botanical names with their uses
Answer:
Explanation:
California Box Elder- Acer negundo californicum
Japanese Maple- Acer palmatum
Silk Tree- Albizia julibrissin
Strawberry tree- Arbutus unedo
Bird of paradise shrub- Caesalpinia gilliesii
Harlequin Glorybower- Clerodendrum trichotomum
Cypress- Cupressus spec.
Oregon Ash- Fraxinus latifolia
Sweet Bay- Laurus nobilis 'Saratoga'
Explanation:
I hope its help you Thank you50 POINTS!!! The forces of nature are all around us working to shape the surface of our planet. Your task is to search the globe for three examples of land formations shaped by surface events. You will create a presentation to demonstrate your knowledge on this topic. You may choose to create a travel brochure, a vacation scrapbook, or a presentation using software.
Be sure to include the following for each land formation you choose:
a picture (you may hand draw, take photos in nature, or use stock images)
a complete explan
Answer:
Four major landforms are
A) Mountains B) hills C) plains D) plateaus
Explanation:
I hope this helps you out a little!
do fertilised eggs divide to form a foetus
From earliest to latest, the overall sequence of early development proceeds as follows: A) gastrulation → organogenesis → cleavage B) ovulation → gastrulation → fertilization C) cleavage → gastrulation → organogenesis D) gastrulation → blastulation → neurulation E) preformation → morphogenesis → neurulation
Answer:
C) cleavage → gastrulation → organogenesis
your welcome!
what are the types of tropism
Answer:
Forms of tropism include phototropism (response to light), geotropism (response to gravity), chemotropism (response to particular substances), hydrotropism (response to water), thigmotropism (response to mechanical stimulation), traumatotropism (response to wound lesion), and galvanotropism, or electrotropism (response to electric current).
Tropism is a response to certain stimuli. A positive tropism is moving towards the stimuli, while a negative tropism is moving away from a stimuli.
Positive Phototropism - Growing towards light
Negative Phototropism - Growing away from light
Positive Thigmotropism- Moving towards touch
Negative Thigmotropism- Moving away from touch
Positive Hydrotropism - Growing towards water
Negative Hydrotropism - Growing away from water
Positive Gravitropism - Growing towards ground
Negative Gravitropism - Growing upwards
Which process allows a bacterium to take DNA from its environment and add it to its own genome?
Answer:
b transformation
Explanation:
In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.
state two functions of mucus produced along the alimentary canal
Answer:
helps reduce intestinal inflammation by decreasing bacterial interaction with intestinal epithelial cells.
Can someone answer both pls
Answer:
Not clear picture!!!!!!!!
Which of the following is an
example of facilitated
diffusion?
A. liquid molecules colliding with one
another
B. reaching an equal amount of molecules on
both side of a membrane
C. red blood cells allowing glucose to move in
and out
D. cytoplasm keeping an organelle in place
Not 100% sure but I'm pretty sure it's C. red blood cells allowing glucose to move in and out.
Some of the cell membrane functions are similar to the ________ of the body.
the skin has cells like that
Anjuli performed an experiment to determine the respiration rate of yeast. She determined this by measuring the
amount of carbon dioxide (CO2) that was produced. Then, she created the following graph.
Her teacher suggested that she redraw her graph as a line graph. Why should she redraw the graph?
• A line graph looks better in a scientific report.
• She was measuring a rate of change.
• She had graphed the wrong relationship.
• Her experiment had many different variables.
The correct answer is B. She was measuring a rate of change.
Explanation
A linear graph is a type of graph that contains a series of data represented by points joined by linear segments, which allow you to quickly check the change in the trend of the data. Therefore, inline graphs quantitative variables are usually used to see their behavior over time. According to the above, Anjuli had to use a linear graph to express the information in the graph more clearly, because the data that he was using in his graph were quantitative variables. Also, she wanted to express the respiration rate of the yeast per minute. According to the above, the correct answer is B. Ella She was measuring a rate of change.
The last option is tt and tt , im really confused on this one
Answer:
im pretty sure its the answer you have!
Explanation:
what process produces oxygen gas in the oxygen cycle?
A. Evaporation
B. Burning
C. Photosynthesis
D. Transpiration
why do solvents particles flow into the cell when the initial volume is below 50%
Answer:
because of it's lower concentration
Which of the following statements is NOT true?
A. Mutations can be harmful.
B. Mutations are important to evolution.
C. Mutations can be beneficial.
D. Mutations are not part of evolution
What is fermentation
Answer:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes.......I am sure this is helpful for you....And have you a great future.....study well plz....first you read your book.....
Sickle-cell anemia is caused by a mutation that changes the second nucleotide of the codon from GAG to GUG. This results in a change of the amino acid from glutamic acid to valine. If the mutation affected the third nucleotide of the codon and changed GAG to GAU then the amino acid would change from a glutamic acid to aspartic acid. Would you predict this change to have the same effect
Answer:
This change would be predicted to have less effect compared to the change of the amino acid from glutamic acid to valine.
Explanation:
A conservative mutation is a type of mutation that leads to the replacement of one amino acid by another with similar properties. Both glutamic acid and aspartic acid are similar in size and biochemical properties. These amino acids are acidic dicarboxylic acids (i.e., they contain two carboxyl groups or ―COOH). The side chains of both glutamic acid and aspartic acid are similar, with the exception that glutamic acid contains one additional methylene group in its side chain.
Not really a school question but, do i need a fishing license to buy bait? And can a person under 16 buy fishing bait without a license?
The cell membrane regulates what enters and leaves the cell, only allowing
certain things to enter or exit. This is called:
A:Selective Permability
B:Homeostasis
C:Osmosis
D:Transport
Answer:
A)selective permeability
Explanation:
it allows for it to choose ,small particles easily enter and leave the cell unlike large particles
An eagle carries a fish up 50 m into the sky using 90 N of force. How much work did the eagle do on the fish?
(Work: W = Fd)
40 J
59 J
140 J
4500 J
Answer:
4500J
Explanation:
As the formula stated above:
work=force×distance
=90×50
=4500J
Why is the ability to bioluminesce beneficial? signals may be sent out to communicate an interest in mating it can camouflage the underbelly of the fish by lighting it up the same color as the sea surface so that the fish will be almost invisible to predators swimming below food may be found even in the darkest parts of the ocean or at night the light may momentarily distract predators, allowing the organism a chance to escape all of the above
Answer:
The correct answer is - All of the above
Explanation:
Food is produced at every part of the earth as it may be found even in the parts that are darkest at night or at the part of ocean. Communication between mates can be done by signals that may sent to show interest in mating, Camouflage is the way to escape or hide by use of the light that may momentarily distract predators as it can camouflage the underbelly of the fish by lighting it up the same color of as the sea surface to make it invisible.
Ở người, alen A nằm trên NST X quy định máu đông bình thường là trội hoàn toàn so với alen a quy định mù màu. Một cặp vợ chồng sinh con, người vợ bình thường nhưng người chồng bị mù màu. Biết không xảy ra đột biến. Theo lí thuyết, tỉ lệ sinh con bị bệnh chiếm bao nhiêu phần trăm?
Answer:
Explanation:
có 50% khả năng con cái mắc bệnh
No.3 plzz ...?
Any one
2^n=32
n=5
It doesn't really match up with the options so not sure, my best guess would be either choosing 16 or 4. 16 in case the person calculated as 16 times 2 = 32 and 4 bc its the closest.
