Answer:
The charges inside and outside of the neuron before receiving a stimulus are negative and positive, respectively, which corresponds to the transmembrane rest potential.
Explanation:
Neuron is the specialized cell of the nervous system in charge of transmitting electrical impulses. The generation of a nerve impulse in the form of an electric current is due to a change in the transmembrane potential.
Outside the neuron cell, electrical charges are predominantly positive, and the ion with the highest concentration is sodium. In the intracellular space, a great quantity of proteins provide negative charge, and there is a predominance of potassium ions. Under these conditions, the ionic channels are closed.
For this reason, a neuron at rest, before receiving a stimulus, presents positive charges on the outside and negative charges on the inside, and the membrane potential in this condition is estimated at a value of -65 mV.
Once a stimulus is produced, the ionic channels open and Na+ ions enter the cytoplasm, exchanging them for K+, which implies a change in the membrane potential which, on reaching the threshold, produces an action potential and the nerve impulse is produced.
The process of diffusion occurs when
Answer:
when particals are free to move
Explanation:
spread. They move from a region where they are in high concentration to a region where they are in low concentration. Diffusion happens when the particles are free to move. This is true in gases and for particles dissolved in solutions - but diffusion does not occur in solids.
Are cells and DNA the same thing?
Answer:No
Explanation: essentially cells hold dna inside of the nucleus. So while cells hold and have that they are not the same as dna because they also go through processes like mitosis
Answer:
No
Explanation:
Cells make up our bodies and perform acts to allow our body to do things. They also keep us alive. DNA is genetic and shows things you inherit from your parents, things that will be passed on to your kids if you have them
A phagocytic cell has a mutation in a gene for a hydrolytic enzyme that renders the enzyme nonfunctional. What is the most likely effect of the mutation when this phagocytic cell ingests a pathogen?
A. a vacuole will not form
B. the pseudopodia will not be able to surround the pathogen as well
C. pathogen debris will not exit the cell via exocytosis
D. the lysosome will not degrade the pathogen effectively
The impact of the mutation when this phagocytic cell ingests a pathogen when the lysosome will not degrade the pathogen effectively. hence, the option d is correct.
Where the Hydrolytic enzymes should be found?Hydrolytic enzymes are to be found in the cell lysosome. At the time when there is mutation in the hydrolytic enzyme when there is degradation of pathogen in the lysosome that should not be arise because of non functional nature of the hydrolytic enzyme.
The pseudopodia, vacuole will generated in a normal way in a cell since mutation will not impact the structure.
learn more about mutation here: https://brainly.com/question/17333354
Which of the following shows a correct base pairing in DNA?
OA and G
OG andc
OCand A
OT andG
Answer:
the correct base pairing in DNA is G and C.
Explanation:
The pyrimidine cytosine(C) always pair with purine guanine(G)
The one that is showing correct base pairing in DNA is G and C. The correct option is B.
For DNA to be stable and maintain its integrity, the proper base pairing is essential. Adenine (A) pairs with thymine (T), and cytosine (C) couples with guanine (G), according to the base pairing laws.
As a result, the base pairing in DNA represented by G and C is correct. The two strands of the DNA double helix are kept together by the hydrogen bonds that form between the bases.
While cytosine and guanine make three hydrogen bonds, adenine and thymine only form two.
The correct replication and transcription of DNA as well as the generational transmission of genetic information are all made possible by this complimentary base pairing.
Thus, the correct option is B.
For more details regarding base pairing, visit:
https://brainly.com/question/15442518
#SPJ6
Your question seems incomplete, the probable complete question is:
Which of the following shows a correct base pairing in DNA?
A. A and G
B. G and C
C. C and A
D. T and G
what is the final stage of a typical muscle contraction, ending the contraction
myofibrils bind to each other in a chain
muscles fiber is activated by ACh
the heads of myofibrils bind
ACh breakdown through its own natural cycle
(Anatomy and physiology)
(15 points!!)
Answer:
ACh breaks down through its own natural cycle.
Explanation:
I just did the mid term :)
and this it correct
Tony spaces 5 plants apart equally along a line, with the first plant directly in front of a window and the last plant 30 feet away from the window. He gives them equal access to air and water and then monitors the amount of gas each plant releases.Which gas is Tony monitoring and what trend is hemostlikely to see in the data he collects?
A.He is monitoring oxygen. The amount of gas released should be highest for the plant in the middle and lowest for the plants at the ends.B.He is monitoring carbon dioxide. The amount of gas released should be highest for the plant in the middle and lowest for the plants at the ends.C.He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.D.He is monitoring carbon dioxide. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.
Answer:
The correct answer would be - C. He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.
Explanation:
The release of the oxygen gas in the process of photosynthesis depends on the rate of photosynthesis which depends on various factors such as carbon dioxide, light, and water. In this experiment air (carbon dioxide), water is constant only factors that are changed is light, and an increase in the light energy increase the rate of photosynthesis, and a decrease in the intensity of light depend decreases the rate of photosynthesis.
Thus any change in the light would affect the release of the oxygen gas which is measured through this experiment and gas released should be lowest for the plant farthest away from the windowand highest for the plant closest to the window.
A specific characteristic that varies from one individual to another.
Answer:
Trait would be the answer!
Answer:
A trait
I hope this helps!
Dolphin fins and shark fins: _________
a. are probably built by different genes.
b. are an example of divergence.
c. suggest these two populations could interbreed.
d. are evidence that adaptive evolution is mainly driven by random forces.
e. None of the above is correct.
Answer:
a. are probably built by different genes.
Explanation:
Although sharks and dolphins are aquatic animals belonging to the vertebrate group, sharks are fish while dolphins are mammals. Sharks belong to the class Chondrichthyes which are fish that have a cartilaginous skeleton. On the other hand, dolphins are mammals (class Mammalia) which are animals mainly characterized by the presence of mammary glands. In consequence, both species are not closely phylogenetically linked, thereby those genes involved in the development of the integumentary system (skin) in both species are expected to be different.
The illustration shows one of the ways resources are removed from the deep sea. Describe what type of resources these are, including if they are renewable or non-renewable. Predict two consequences to the seafloor life if this process is not regulated.
Answer:
Marine mining is a process that can be done by dredging the seabed and is used for the extraction of mineral resources from the seabed, which are non-renewable, with a negative impact on marine ecosystems.
Explanation:
The illustration shows a process of marine mining by dredging, where the resource extracted is of a mineral nature, like copper, zinc, silver and gold. Gravel used for construction can also be extracted from the sea. Mineral resources extracted from the sea are not renewable.
The process of marine mining can be harmful to the ecosystems there, so it must be a process that requires control and management from the ecological point of view.
Two possible consequences of not regulating marine mining are:
Destruction of the habitat of life forms present on the sea floor, which endangers many species and even forces migration to more stable areas, with consequences on the food chains. Extinction of marine species that inhabit the seabed. The flora and fauna of the sea floor usually have slow reproductive cycles and, in the case of fish, spawning takes place on the bottom of the sea. Mining endangers the reproductive cycles of the species, leading to induced extinction.Responsible and controlled mining activity can be useful for humans, while avoiding negative consequences on the ecosystems that exist at the seabed.
Which of the following is an example of a parasite? Molds Mosquitoes Yeasts Zika
Answer:
mosquito is the correct answer
Explanation:
zika and yeast are more of sicknesses and infections
Answer:
Mosquitoes
Explanation:
I took the test
Your teacher has given you a plant to observe. You notice the leaves of the plant are dotted with openings. These openings are known as stomata. When open, stomata allow the plant to take in carbon dioxide, release oxygen. Moisture also evaporates through stomata helping to draw water from the roots up into the plant. How does the presence of stomata allow cell organelles to work together?
pls i’m getting timed !!
Answer:
Carbon dioxide
Explanation:
The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.
Answer: Carbon dioxide
Explanation:
When anything made out of carbon burns completely, the only end products are carbon dioxide and water vapor.
Alternative energy sources of wind power and solar thermal power don't burn fossil fuels, but both affect _______ populations.
Answer: Bird populations
Explanation:
Wind and Solar energy have been hailed as a good thing because they utilize natural forces and reduce pollution however they do pose some threats to wildlife especially birds.
Wind turbines have been shown to be lethal to birds when flocks of birds fly through them and solar panels have been known to attract birds which sometimes fatally crash into them thinking they are bodies of water.
how many kilometers will the pacific plate travel in 1 million years
Answer:
201km in 1.8 million year( also mark me as brailiest)
List the inputs and outputs of photosynthesis. what parts of the plant are responsible for taking in each of the inputs
Answer:
Inputs: 6CO2 and 6H2O with light energy
output: C6H12O6 and 6O2
Leaves, roots are the major parts of the plant responsible for taking in each of the inputs
Explanation:
The photosynthesis process is the process where carbon dioxide and water are converted into glucose and oxygen in the presence of light. The products of this process act as substrates during cellular respiration. The photosynthesis process can be represented as:
6CO2 + 6H2O ------> C6H12O6 + 6O2
inputs ↑ outputs ↑
Inputs of the reaction are:
1. Carbon dioxide - 6CO2
2. Water - 6H2O
3. light energy from sun
Outputs are:
1. Glucose - C6H1206
2. Oxygen - 6O2
b. The parts of the plant is responsible for taking inputs during photosynthesis is the leaf as it has chloroplast that trapped the light and also helps in getting carbon dioxdie and roots that helps in absorbing water.
The turning on of a gene to make RNA and eventually protein is known as gene _________?
A. Regulation
B. Mutation
C. Making
D. Inversion
E. Expression
Answer: E. Expression
Explanation:
Gene expression is the process whereby the information that are being encoded in a gene are used during the assembling of the protein molecule. It gives room for a cell to be able to respond to the changes in its environment.
Therefore, the turning on of a gene to make RNA and eventually protein is known as gene expression.
Write a brief statement the demonstrates a credibility appeal.
Credibility appeals are based on perceived competence, expertise, or accomplishments. Ethos is a good example: Ethos is about establishing your authority to speak on the subject and giving credibility.
Answer:
Credibility appeals are based on perceived competence, expertise, or accomplishments. Ethos is a good example: Ethos is about establishing your authority to speak on the subject and giving credibility.
Explanation:
The other person was correct!!!
Are cells and DNA the same thing?
Answer:
We learned in biology class that every cell in the body has the same DNA. Whether a heart cell, skin cell or muscle cell—they all read from the same genetic blueprint. Now, scientists are learning there is more to the story.
Almost all of the cells in your body share the same DNA as was found in that first cell. Your DNA contains all of the information needed for making you. This information is stored in the over 20,000 human genes found in almost all your cells.
The organic macromolecules that make up
our food and our bodies are made of
different kinds of "building blocks". What is
the general name of these building blocks?
5. How do lichens arrive in a barren landscape, and how do they grow on rock?
I can’t answer how lichens arrive in a barren landscape but I can answer the 2nd part
Lichens grow when exposed to water. When wet, lichens begin to photosynthesize.
....... is the fundamental,structural and functional unit of living organism
Cell is the fundamental, structural and functional unit of a living organism.
Why is a bone not a mineral?
Muscular strength is defined as:
Answer:
Power
Explanation:
Answer:
the amount of force that can be exerted by a single contraction of a muscle.
DNA Replication Assignment
Instructions: For this assignment, you will replicate DNA to make a complimentary strand of DNA. Then transcribe the complimentary DNA sequence into mRNA. Next, translate the mRNA molecule into the codes for specific amino acids using the amino acid chart on the last page. Lastly, address the reflection questions.
DNA Replication:
Replicate the following strand of DNA:
Original DNA A T G A A C C A T T C A G T A T G G
Complimentary DNA
Transcription:
Transcribe the DNA to make an mRNA molecule
Complimentary DNA
mRNA Molecule
Translation:
Translate the mRNA into the corresponding amino acids.
mRNA Molecule
Amino Acid
Can anyone help with this? I don't understand it.
Using the DNA sequence provided, determine the amino acids.
Original DNA A T G G G T C T A G C G A A A G A T
Complimentary DNA
mRNA Molecule
Amino Acid
Original DNA A T G G G T C T A G C G A A A G A T Complimentary DNA mRNA Molecule Amino Acid Questions: Using what you have learned in the lesson and the experiment, answer the following questions in essay format using complete sentences. Be sure to include evidence to support your answers. What is the function of mRNA?
Answer:
This question is asking to do the following:
Replicate the DNA sequence
Transcribe the complementary DNA into mRNA
Translate the mRNA codons into amino acid sequence
Give the function of mRNA
Please find the detailed answer to this question below
Explanation:
- DNA replication is a process whereby the content of DNA (genetic material) is doubled i.e. duplicated. In other words, another copy of DNA is made from one a DNA template. The principle of DNA replication follows the complementary base pairing rule i.e. A-T, G-C
Original DNA template- A T G G G T C T A G C G A A A G A T
After DNA replication-
Complementary DNA strand- T A C C C A G A T C G C T T T C T A
- Transcription is the process whereby a DNA template used to synthesize a mRNA strand. In this case, the complementary DNA sequence above will be transcribed into a complementary mRNA sequence. Note that Uracil replaces Thymine in RNA.
Complementary DNA strand- T A C C C A G A T C G C T T T C T A
After transcription
mRNA strand- A U G G G U C U A G C G A A A G A U
- Translation is the process by which a amino acid sequence is synthesized from a mRNA sequence. The sequence of the mRNA is read in a group of three bases called CODON. Each codon specifies an amino acid. In this case; the mRNA sequence is A U G G G U C U A G C G A A A G A U
After translation using the genetic code, the amino acid sequence is:
Methionine- Glycine- Leucine- Alanine- Lysine- Aspartic acid
Note:
AUG codes for Methionine (Met)
GGU codes for Glycine (Gly)
CUA codes for Leucine (Leu)
GCG codes for Alanine (Ala)
AAA codes for Lysine (Lys)
GAU codes for Aspartic acid (Asp)
- mRNA, which means messenger RNA, is a type of RNA molecule whose major function is to transport genetic information out of the nucleus into the cytosol in order for translation to take place. In contrast to DNA, which is a storage molecule, mRNA is a transporting/carrier molecule that encodes genetic information.
What is beneficial and what is harmful for the people and environment?
Answer:
I made a photo of all the beneficial ones and the harmful ones are not highlighted green.
Explanation:
Nitrogenous bases are located on both strands of DNA double helix. What is the significance of the nitrogenous bases?
Examine the diagram of a cell.
Which organelle is marked with an X?
Answer:
Yall the answer is nucleous
Explanation:
just the right answer
Which type of observation is the following statement: The flower is 16 inches tall.
27 points plzzz help asap
Answer:
15
Explanation:
It shows nothing but my correct answer hehe.
Which statement compares how the euglena and volvox obtain food?
Both the Euglena and Volvox use an oral groove to obtain food, Brigid Ha. B. Both the euglena and volvox use chloroplasts to obtain food through photosynthesis.
this is what i looked up an got
Gizmo Warm-up
On the SIMULATION pane of the Cell Division GizmoTM, check that the Cycle Length is set
to 12 hours. Click Play ( ), observe until the maximum number of cells is shown, and
then click Pause ( ).
1. Look at the cells. Do they all look the same?
I
antakinerir
Answer: no
Explanation: some of the cells look the same but some don’t and this is basically saying that they are not all the same. There is like 4 different types of cells.