Answer:
D
Explanation:
The simple answer is the electrons in the outermost energy level.
Hydrogen has 1 electron in the outermost energy level.
Magnesium has 2 so this tells you that magnesium has a charge of 2
Oxygen has 6 oxygen has a charge of - 2
Fluorine has 7
For most elements, the electrons in the most outer ring determine the valence of the element.
Notice that the non metals work differently than the metals. Mg may have a charge of 2 and that is the number of electrons in the valence right.
Oxygen is a non metal it has a charge of - 2. It gets 6 electrons by subtracting the number of its charge from 8.
Answer:
D. electrons in the outermost energy level
Explanation:
The valence electrons are the electrons in the outermost energy level.
help with biology please
Answer:no
Explanation:picture
Answer:
i think its number 1
hope that helps!
La coordinación nerviosa controla funciones de sensibilidad y respuesta inmediata ante los estímulos recibidos. Una de las funciones primordiales de la médula espinal se concentra en:
a)regular la temperatura corporal
b)controlar el sueño y la vigilia
c)el arco reflejo
d)la memoria
Which Ali combination represents a male who has an X-linked recessive disorder
What is an agricultural subsidy?
Select one:
- A sum of money paid to farmers and agribusinesses by the government to
supplement their income and manage crop supply
-A sum of money paid to farmers and agribusinesses by the government in
exchange for their land and machinery
о
-A bank loan available to commodity crop farmers in case market prices fall
Answer:
A sum of money paid to farmers and agribusinesses by the government to
supplement their income and manage crop supply
Why do scientists only test one independent variable in an experiment?
The light reactions can only occur in the absence of light.
A. True
B. False
Answer:
false
Explanation:
the light reactant needs light
Item 5 What is the role of a generator in producing electricity? The generator stores electrical energy for later use in homes and businesses. The generator spins the turbine to create mechanical energy. The generator transforms the mechanical energy of the turbine into electrical energy. The generator reverses the turbine to create electrical energy.
Answer:
The generator transforms the mechanical energy of the turbine into electrical energy
Explanation:
Electricity generator is a device that is used in generating power supply which can be used in industries, homes and for commercial and private purposes.
It operates by converting mechanical energy into electrical energy for the use in an external circuit. mechanical energy can be obtained from steam turbines, internal combusting energy, gas and water turbines and it can be obtained through the rotating shaft.
The capacity of each generator determines the amount of energy it can supply to a given place.
the lacteal is responsible for the transport of
A. Fats
B. Blood
C. Protons
D. carbohydrates
Answer:
Lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestines. The lacteals merge to form larger lymphatic vessels that transport chyle to the thoracic duct where it is emptied into the blood stream at the subclavian vein.
hope it helps
help with the graph
if you had it in Spanish
what is the process of transformation?
infecting bacteria with bacteriophages
adding foreign DNA to a bacterial cell
copying foreign DNA into RNA
causing mutations in viral genetic material
Marcus is testing a hair sample from the telogen stage. What is likely to be TRUE about this sample? A. There will be several medullas present. B. There will be mitochondrial DNA present. C. There will be nuclear DNA present. D. There will be very little DNA present.
Answer:
c
Explanation:
no explanation (plz give brainliest)
The statement C is correct. There will be nuclear DNA present.
What is DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
Moreover, DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes.
Hence, DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases.
Learn more about DNA:
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Me pueden ayudar con la respuesta? Es urgente!
A: especie
B: gen
C: desarollo
D:
E:deriva genetica
F:población
G:mutuación
no ps no pude con la D-
Which is an example of an ecosystem change that resulted from human activity?
Answer:
Your welcome! :)
Explanation:
An example is:
Deforestation occurs when a forest or stand of trees is removed, converting the land to a nonforest use. This changes the ecosystem drastically and results in a dramatic loss of biodiversity.
♡♡♡
Answer:
chaparral shrublands turning to grass due to frequent fires
Explanation:
I just took the quiz and it's right
A population of beach mice have been
introduced to a new disease. This
disease has killed off most of the
population. Some mice in the
population were better suited and
survived the disease, living to
reproduce. The population over time
has grown resistant to the disease.
This is an example of?
(1 Point)
*
Artificial Selection
Natural Selection
Selective Breeding
PLS HURRY AND NO LINKS PLEASE
If a long tail is a dominant characteristic, in which case is the characteristic of a long tail definitely expressed?
A when both parents have a long tail
B when neither allele contains instructions for a long tail
C when at least one parent has a long tail
D when at least one allele contains instructions for a long tail
Answer:
b
Explanation:
Answer:
the correct answer is d i took the test.
Explanation:
27. Which statement best describes a chromosome?
A) It is a gene that has thousands of different
forms.
B) It has genetic information for traits of an
organism that is contained in DNA.
C) It is a reproductive cell that influences more
than one trait.
D) It contains hundreds of genetically identical
DNA molecules for one trait.
Answer:
B
Explanation:
Chromosomes are structures composed of DNA that, in turn, carry the genes of a living being, responsible for defining the physical characteristics of each individual. Chromosomes are involved in the nucleus of cells that make up a living being.
Any reaction that is not intended is called
Which of the following substances will conduct electricity?
A) Methanol
B) Aqueous KCI
C) NaCl in its solid form
D) Sugar solution
Answer:
b
Explanation:
because It have ionic bonding and when in molten form ions are mobile and carry a charge however when in solid form it wouldn't conduct electricity as the ions will be fixed in position.
hope this helps:)
Question 4 of 10
What is the main function of the circulatory system?
O A. To break down food into molecules of nutrients
B. To collect wastes made by cells and remove them from the body
O c. To carry nutrients to cells and wastes away from cells
O D. To protect the body from pathogens that can cause infection
SUBMIT
- The ability of an ecosystem to maintain a steady equilibrium by responding to
internal and external negative feedback systems describes -
Answer:
Describes ecosystem homeostasis
Explanation:
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
Individual bones are organs.
A. True
B. False
Answer:
a
Explanation:
Answer:
True
Explanation:
Because they are made out of tissues
How do electronegativity, polarity, and ph all relate and effect each other? I know moderators, you will be reported if you give a link or wasteful answer.
Answer:Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.
Explanation:
The chemical substances in our environment to which we respond can be called?
A. stimuli
B.impulses
C.responses
D.sense cells
A. Stimuli
WHAT IS STIMULI?
A stimuli is anything that can trigger a physical or behavioral change.The changes in the environment to which living things respond are called stimuli. The living things show response to external stimuli such as heat, light , touch, sound, smell, taste, water and chemicals.It can be internal or external both.When diverse organs works collectively in a scientific way to supply a reaction to the stimulus, this is known as coordination.Stimuli is essentially anything that triggers a receptor for one of those senses.You can understand this with an example that would be the receptors on our skin which sense a stimulus like pain. Sense organs contain groups of receptors that respond to specific stimuli.
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A functional or physiological adaptation:
A. Is a physical feature of an organism that helps it survive
B. Allows an organism to perform special functions within the body
C. Is a behavior that is taught after birth
Answer:
A trust me.
Explanation:
are you functional adaption is an adaption that helps an organism survive in a certain environment, typically altered by a physical stimuli, dietary changes, or injury.
Answer:
yes behavior is taught after birth
A mammal's red blood cells produce the protein hemoglobin, which carries oxygen through the bloodstream. Its hair follicle cells do not produce hemoglobin. Which statement is true about these differences? A) The red blood cells contain different genes than the hair follicle cells, causing the cells to differentiate B) The red blood cells contain DNA, but the hair follicle cells do not C) A red blood cell and hair follicle cell have the same genes, but they are expressed differently D) The hemoglobin is produced from recombinant DNA, which is only found in red blood cells
Answer:
C) A red blood cell and hair follicle cell have the same genes, but they are expressed differently
Explanation:
All cells of a living organism contain the same genetic sequence i.e. they contain the same set of genes, however, differences in the expression of these genes may occur. This is responsible for the different specific roles or functions played by organs of the body system.
The expression of a gene refers to the process by which a gene is transcribed and translated into a protein molecule, which is responsible for traits in the body. Genes are expressed differently in order for certain cells to function differently and specifically. For example, difference in expression of genes is responsible for the ability of red blood cells to produce hemoglobin and the inability of hair follicle cells to, even if they contain same genes.
I NEED HELP PLEASE ANSWER FAST
A population of wolves migrates north in search of food. As the wolves travel, they enter a region that has long, snowy winters. Some of the wolves have an allele that gives them white coats. This makes them better able to sneak up on prey.
1. Which type of wolf is selected for in this new ecosystem?
2. Has genetic diversity helped or hurt the survival of the wolf population? Explain.
WHATS THE ANSWER ?????
Answer:
Antigens are secreted by the endocrine system
Explanation:
The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with
All of living and noliving things in a particular area
1. Do plants, like animals, have traits that increase their reproductive success? What are some of these
traits?
