Answers
Answer:
Ionic bond between Na and Cl
Answer:an ionic bond,
Explanation:
In an ionic bond, the atoms are bound together by the electrostatic forces in the attraction between ions of opposite charge. Ionic bonds usually occur between metal and nonmetal ions. For example, sodium (Na), a metal, and chloride (Cl), a nonmetal, form an ionic bond to make NaCl.
Related Questions
Natural selection acts on populations of living things, usually through a specific trait. Which statement must be true about that trait? Responses The trait is the same for all organisms. The trait is the same for all organisms. The trait is resistant to mutations. The trait is resistant to mutations. The trait is passed on genetically to the next generation. The trait is passed on genetically to the next generation. All forms of the trait have the same impact on survival. All forms of the trait have the same impact on survival.
Answers
The statement " The trait is passed on genetically to the next generation" is true about the trait by which natural selection acts on populations of living things.
The trait can't be the same for all organisms since there are variations among all organism.Each organism is unique based on difference in genetic material even among same species.If the trait is resistant to mution then organism cant adapt to change in environment
As a result if environment change suddenly or there is a random calamity the entire population of organisms could be wiped out. So there should heritable traits susceptible to mutation or changes.
And the trait should be passed on from generation to next and if they succed of the competion among others and survive and reproduce more such traits will be selected by nature.All forms of trait cant have the same impact only those selected by nature will be more prominent.Others will have disadvantage.
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If you measured the energy content of organisms in each trophic level in an ecosystem, which would have the greatest total energy content
Answers
Regards
BLACKSHARK
describe how impulse are transmitted across a synapse
Answers
A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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Skeletal muscle fibers are innervated (stimulated) by
parasympathetic neurons
sympathetic neurons.
motor neurons.
interneurons.
Answers
Answer:
motor neurons
Explanation:
this type of pathogen cannot grow outside a host cell. multiple choice extracellular pathogen facultative intracellular pathogen obligate intracellular pathogen obligate extracellular pathogen
Answers
The type of pathogen that cannot grow outside a host cell is the obligate intracellular pathogen.
Obligate intracellular pathogens are organisms that can only reproduce inside host cells. They are dependent on the host cell's machinery and resources for their growth and replication.
Examples of obligate intracellular pathogens include viruses, certain bacteria like Chlamydia and Rickettsia, and some protozoans like Plasmodium, which causes malaria.
In contrast, facultative intracellular pathogens are capable of reproducing both inside and outside host cells. They can switch between intracellular and extracellular environments depending on the availability of resources and host defenses.
Examples of facultative intracellular pathogens include bacteria like Salmonella, Listeria, and Mycobacterium tuberculosis.
Obligate extracellular pathogens are those that only grow and reproduce outside of host cells. They usually cause damage to the host through the secretion of toxins or by inducing an excessive immune response.
Examples of obligate extracellular pathogens include bacteria like Streptococcus and Clostridium species.
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the process of living organisms staying the same
Answers
Answer:
Explanation:
All species of living organisms, from bacteria to baboons to blueberries, evolved at some point from a different species. Although it may seem that living things today stay much the same, that is not the case—evolution is an ongoing process. The theory of evolution is the unifying theory of biology, meaning it is the framework within which biologists ask questions about the living world.
Answer:
Living organisms have an ability to keep a stable internal environment and they maintain to have a balance inside their cells.
Explanation:
Reproduction is the process by which organisms make more of their own kind from one generation to the next.
Metabolism is the sum of all the chemical reactions carried out in an organism. heredity is called a gene.
2. The structural and functional unit of life is (a) a cell, (b) an organ, (c) the organism, (d) a
molecule.
Answers
Answer:
A. A cell
Explanation:
Cells are the building blocks of life.
They are the biological units of organisms and are the basic structural and functional units of life.
Cells are the smallest units of life.
Help please first one to answer gets the crown .
Please look at the picture & answer the question.
Answers
Answer:
I think it’s the first and the last one
Explanation:
Therefore, the independent variable was _____, and the dependent variable was ____
Answers
Answer:
independent variable = magnification
dependent variable = the amount of cell organelles seen
Explanation:
⭐What is an independent variable?
the variable that is being tested and modified to produce different results (the dependent variable)⭐What is a dependent variable?
the variable that results from testing and modified the dependent variable is dependent on the independent variableYou want to change and alter the magnification to see how many cell organelles you will see.
Therefore, the magnification is the INDEPENDENT variable.
Therefore, how many organelles you will see is the DEPENDENT variable.
⭐if this response helped you, please mark it the "brainliest"!⭐
Drag each label to the correct location.
Categorize the structures as homologous or analogous
the mammalian tail and
the human coccyx (tail bone)
the leaves of pitcher plants
and cacti
the flippers of penguins
and dolphins
the bills of ducks
and platypuses
Homologous
Reset
Next
the shells of turtles
and crabs
Analogous
Answers
The analogous organs include shells of turtles and crabs and flippers of penguins and dolphins. While the homologous organs include the leaves of pitcher plants and cacti and mammalian tail and the human coccyx.
What are homologous and analogous organs?The homologous and the analogous structures are used as evidence of the comparative anatomy. They are important in determining the pattern of evolution and ancestry.
The homologous organs are characterized by similar structures that vary in functions. The leaves of pitcher plants and cacti and mammalian tails and the human coccyx have a similar anatomical structure but are used for various purposes.
The analogous organs have the same function even when they have different structures like the shells of turtles and crabs and flippers of penguins and dolphins. The shells protect both turtle and crab, while flippers are used to swim.
Therefore, the shells of turtles and crabs and flippers of penguins and dolphins are analogous organs.
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Which of these BEST describes the structural difference between the DNA of bacteria and the DNA of humans?
Group of answer choices
1.Bacteria do not have DNA so there is nothing to compare.
2.All DNA is made of the same components so there would be no difference.
3.Bacteria DNA contains 3 nitrogenous bases, while the human DNA contains 4.
4.Human DNA is much more complex in structure.
Answers
Formation of enterocelous?
Answers
Enterocoelous refers to the condition in which the coelom develops from pouches "pinched" off of the digestive system, whereas Schizocoelous refers to the condition in which the body cavity is formed by the splitting of the mesoderm during embryonic development.
What procedure does the coelom of the enterocoelous and schizocoelous designs follow?Unlike Schizocoelous, where the capsule is created either by breaking the capsule or by pouches "pinched" off of the digestive tract, Enterocoelous is an illness in which the coelom originates from pouches "pinched" off of the digestive system.
A method for how certain animal embryos develop is known as schizocoelous or schizocoelic. When secondary heart cavities coeloms are created by breaking a solid mass of pair with polished nickel hardware embryonic tissue, the schizocoely process takes place.
What is the formation of the coleom for the enterocoelous and schizocoelous plan?
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what separates the intracellular fluid from the extracellular fluid?
Answers
Answer:
cell membrane
Explanation:
hope it helps ❤
The intracellular fluid (ICF) and extracellular fluid (ECF) are separated by a semi- permeable cell membrane that is permeable to water but not to most solutes including electrolytes and proteins, which generally need transport systems to move across the membrane.
A hetero gous ail yellow plant is crossed with a homorygous short green. Show the genoype od phenotypes of the Fi offspring and the probability of each.
Answers
The genotype of the F1 offspring is YyTt, and the phenotype is yellow and tall. The probability of each phenotype in the F1 offspring is as follows yellow and tall is 1/2 or 50%, green and short is 1/2 or 50%.
The genotype and phenotype of the F1 offspringGenotype refers to the genetic makeup or combination of alleles present in an organism, while phenotype refers to the observable traits or characteristics expressed by an organism. Genotype represents the genes an organism carries, while phenotype represents the physical or observable features resulting from the interaction between genotype and the environment.
When a heterozygous ail yellow plant (genotype Yy) is crossed with a homozygous short green plant (genotype tt), the F1 offspring will have the genotype YyTt and the phenotype of yellow and tall. The probability of this phenotype occurring in the F1 generation is 50%. Additionally, there is a 50% probability of the F1 offspring having the phenotype of green and short.
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What would most likely happen to a unicellular if it was exposed to a hypotonic solution for an extended period of time
Answers
An atom has a mass number of 36 and an atomic number of 16, how many
neutrons does the atom have?
Answers
Answer:
36
Explanation:
Mass (36) - number (16) = 20 neutrons
If you place the letter g under the microscope how would the image look on the field of view
Answers
Answer:
I hope this will help you a lot. it takes me an hour to find this answer.
what blood type does AO produce
Answers
Answer:
O
Explanation:
Both A and B alleles are dominant over O. As a result, individuals who have an AO genotype will have an A phenotype. People who are type O have OO genotypes. In other words, they inherited a recessive O allele from both parents.
Predict the phenotype for expression of the E. coli trp operon enzymes for the following mutants: a) A to U mutation at position 48 of the trp operon leader RNA. b) Deletion from positions 114-121 of the trp operon leader RNA. Explain your predictions taking into account the alternate stem-loop structures of the leader RNA.
Answers
Is Congo red used in human cells?
Answers
Answer:is toxic to many organisms
Explanation:one of the major methods used to detect the amyloid structure of protein aggregates.
The small contracting region of a muscle fiber is called _________________ and a protein involved in the contraction is _________________.
Answers
The sarcomere is the small contracting region of a muscle fiber, which has the function of housing different elements responsible for muscle contraction, these proteins are actin and myosin.
What is the sarcomere?The sarcomere is defined as the smallest functional and anatomical unit of striated muscle, that is, the voluntary muscle, which contains the contractile proteins, actin and myosin.
Characteristics of the sarcomereThe sarcomere has a very complex structure, as it is made up of a series of "bands" that move in the contractile movement.Actin and myosin, which are the proteins inside the sarcomere, slide over each other, varying the size of the sarcomere, then this together generates muscle tension.Therefore, we can conclude that the sarcomere is the smallest and most important region of the muscle fiber that contains actin, myosin, myofilaments and myofibrils.
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A red blood cell has a diameter of approximately 8 micrometers, or 0.008 A model represents its diameter as 8 um. What is the ratio of model size to actual size ?
Answers
Answer:
10
Explanation:
got it right for me
Answer:
the actual answer is 1,000:1
What are the energy producing organelles and under what conditions do they produce energy
Answers
Answer: mitochondria are the site of aerobic respiration, for which of course, they require oxygen.
Explanation: mitochondria are the site of aerobic respiration and energy production for which they require a supply of oxygen
The energy-producing organelle is the mitochondria, and the mitochondria make the energy in the aerobic cellular respiration where the cell uses oxygen and makes the energy that is the ATP.
What is the function of the mitochondria?The mitochondria are cellular organelles in which energy is produced, which happens when the cell gets enough oxygen and the glucose is broken down completely to form ATP. The ATP is formed due to the proper oxygenation of the glucose, and the proton gradient is formed. The proton gradient gives the energy to the cell for energy production, and the energy is used by the cell for the overall body metabolism and growth.
Hence, the energy-producing organelle is the mitochondria, and the mitochondria makes the energy in the aerobic cellular respiration where the cell uses oxygen and makes the energy that is the ATP.
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Select the statements that best explain Makali's GALT activity levels? Makali may have a mutation in the gene that encodes galactokinase. Makali may produce no GALT enzyme. Makali may have normal amounts of GALT, but the enzyme may be mutated. Makali may produce only small amounts of a non-mutated (wild-type) GALT enzyme.
Answers
Answer:
Makali may produce only small amounts of a non-mutated (wild-type) GALT enzyme.
Makali may have normal amounts of GALT, but the enzyme may be mutated.
Explanation:
Makali is lactose intolerant because of his ancestry. Because of this he is not able to digest any lactose which indirectly protected him from galactosemia. Thus he must avoid consuming galactose. He has a low GALT or galactose 1‑phosphate uridylyltransferase activity. He has a normal amount of GALT and may produce only small amounts.
which of the following characteristics best support using yeast cells instead of bacterial cells to express mammalian proteins via cloning?
Answers
The characteristics that best support using yeast cells to express mammalian proteins via cloning instead of bacterial cells is that they are eukaryotic cells.
Protein production is a process to generate a certain protein by the manipulation of gene expression in an organism. For mammals, the host that's generally used for protein production is yeasts.
Yeasts are unicellular eukaryotic microbes that are easy to be manipulated genetically. They have similar synthetic machinery to the native human source cells in many ways. They are also quick and relatively cheap to grow and process. The species that are generally used are S. cerevisiae or Pichia pastoris as they allow stable and lasting production.
The question above seems incomplete, but most likely the completed version is as follows:
Which of the following characteristics best support using yeast cells instead of bacterial cells to express mammalian proteins via cloning?
They easily form colonies.
They can grow on solid or liquid media.
They do not have plasmids.
They are eukaryotic cells.
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A scientist is testing whether light color affects plant
growth. She places three groups of plants in boxes, each
with only one color of light: red, blue, or green. She places
a fourth group of plants in natural light. Each day she
measures the plants and records their growth.
What is the dependent variable in this experiment?
OA. The color of light the plants received
B. The plants in natural light
OC. The type of plants she used
D. The growth of the plants
Answers
The dependent variable in this experiment is D. The growth of the plants.
The scientist is measuring and recording the growth of the plants each day, which is the variable that is being affected and influenced by the different colors of light. The growth of the plants is the outcome that is dependent on the variable being tested, which is the light color.The dependent variable in this experiment is the growth of the plants, as it is the outcome that is being measured and recorded. The scientist is interested in observing how the different colors of light affect the growth of the plants. By comparing the growth of the plants in red, blue, green, and natural light conditions, the scientist can analyze the impact of light color on plant growth.In conclusion, the dependent variable in this experiment is the growth of the plants. By manipulating the colors of light that the plants receive and measuring their growth over time, the scientist aims to determine the effect of light color on plant growth.
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• Dissolved molecules become _____________ distributed
• The molecules moved from where the molecules were common to where they were ______________
• The molecules move from an area of _______________ concentration to an area of_______________ concentration
Answers
Diffusion may be defined as the process of movement of individual molecules of a substance from an area of higher concentration to an area of lower concentration through a semi-permeable membrane.
During the process of diffusion, the net movement of molecules is carried out from an area of greater concentration to an area of lesser concentration. After the termination of this process, dissolved molecules become uniformly distributed.
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Please hurry. Which of the following examples includes only chemical changes that occur in the digestive process?
A: Absorption of nutrients by villi in the small intestines
B: Chewing and swallowing food
C:Recycling of water from dissolved food back into the body
D: Reaction of saliva, stomach acid, bile, and pancreatic juices with food
Answers
The example that includes only chemical changes that occur in the digestive process is the reaction of saliva, stomach acid, bile, and pancreatic juices with food. Option D.
What are chemical changes?Chemical changes refer to changes to the chemical properties of substances. In biological reactions, these substances are referred to as reactants.
Chemical changes are different from physical changes. In physical changes, only the physical properties of substances are altered while their chemical properties remain intact.
When a substance changes chemically, its physical properties most often change along. However, this is not in all cases.
Thus, looking at the examples given, their classification into either physical or chemical changes is as follows:
Absorption of nutrients by villi in the small intestines: physical changeChewing and swallowing food: physical changeRecycling of water from dissolved food back into the body: physical changeThe reaction of saliva, stomach acid, bile, and pancreatic juices with food.When saliva, stomach acid, bile, and pancreatic juices react with food, the chemical properties of food change because the enzymes convert different components of food from one form to another as part of the process of digestion.
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Which of the following is NOT an example of a biological model? (all answers choices 2nd slide)
Answers
Answer:
pictures of different ecosystems
Explanation:
i got it right
How do the chemicals released from the endocrine system make it to the various parts of the body? Why do all of these chemicals not cause every tissue to function as they pass them on their journey through the body?
Answers
Explanation:
chemicals released from the endocrine system are secreted directly into the bloodstream and are carried to where their required.
these chemicals are proteins hence have a specific shape that acts only on specific tissues.