Answer:
Explanation:
A prokaryotic cell is a type of cell that does not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea are based on the prokaryotic cell, while all other forms of life are eukaryotic
A prokaryotic is a primitive cell that lacks organelles, unlike the eukaryotic cells, and are simple organisms.
What are prokaryotes?Prokaryotes are organisms that are simple and evolved before the complex eukaryote. They include bacteria and archaea that are simple and lack organelles that are found in eukaryotes.
They do not have a nucleus and rather have their genetic material disposed of as nucleoids in the center of the cell that undergoes the simple process of the central dogma.
The simple cellular processes and reproductive methods are the reason they lack many organelles. This tells that prokaryotes are simple and primitive types of cells.
Therefore, prokaryotes lack a distinct nucleus.
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I've been stuck on this for a while, any help?
Explanation:
wheres the question? haha๑๑
Which of the following is a frameshift mutation from the original DNA of CGCATTGGA?
a. CGCATTGGA
b. CGGCATTGGA
c. CGCATTGGT
d. GGCATTGGA
Answer: b.
Explanation:
Cgc,att,gga - original
cg(g)c,att,gga. Frame shift
cgc,att,gg(t) snp
(g)gc,att,gga snp
What’s da answer yalll I need help ...
Answer:
I believe the answer is a missense mutation.
Explanation:
As it is a point mutation, a single nucleotide will provide a codon for a different chain of amino acids from that point on. This is a type of non-synonymous substitution.
ALOT OF POINTS MARKING POEPLE AS BRAINLIST
Look at the graph. Explain how the two population are related to each other
both species had growth in number within the same time period
Which division has a single preganglionic neurons with many axon collaterals that forms 20 or more synapses with postganglionic neurons?
a. sympathetic motor division
b. parasympathetic motor division
c. sympathetic sensory division
d. parasympathetic sensory division
Answer:
i believe its c
Explanation:
A single sympathetic preganglionic fiber has many axon collaterals and may synapse with 20 or more postganglionic neurons.
The postganglionic axons typically terminate in several visceral effectors and therefore the effects of sympathetic stimulation are more widespread than the effects of parasympathetic stimulation.
All of the phases of mitosis may be observed on one whitefish blastula or onion root tip slide. a) true b) false
Answer:
its true
Explanation:
Which numbered organelle produces ATP during cell respiration? 1,7,9,13
Answer:
9
Explanation:
A study was conducted to understand the factors controlling the rate at
which molecules or ions travel across cell membranes. An artificial
membrane was created that was composed of a phospholipid bilayer only.
The speed at which various substances crossed this membrane was
measured. Some substances can pass through an actual cell membrane
much faster than they passed through the artificial membrane in this study
Which of the following statements best explains this finding?"
a) Actual cell membranes have a much thicker phospholipid bilayer than the artificial
membrane does
b) Actual cell membranes have a variety of proteins embedded in the membrane that are
absent in the artificial membrane
c) Hydrophobic substances spend more time between the two layers of phospholipid in
the artificial membrane than they do between the layers in an actual membrane
d) Hydrophilic substand spend more time attached to the polar region of the
phospholipids in the artificial membrane than they do attached to the polar region of
the phospholipid in an actual membrane
Answer:
b) Actual cell membranes have a variety of proteins embedded in the membrane that are
absent in the artificial membrane
Explanation:
How can we conserve energy and instead of wasting energy?
Answer:
Adjust your day-to-day behaviors.
Replace your light bulbs.
Use smart power strips.
Install a programmable or smart thermostat.
Purchase energy efficient appliances.
Genetics is the study of genes and their inheritance.
True or False
Answer: I thinks it’s true.
Explanation:
Answer:
True.
Explanation:
How do healthy cell decide when to divide?
Answer:
Cells regulate their division by communicating with each other using chemical signals from special proteins called cyclins. These signals act like switches to tell cells when to start dividing and later when to stop dividing.
A healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.
The cell cycle can be divided into interphase and a mitotic (M) phase.During the interphase, the cell synthesizes all materials required (i.e., proteins, DNA, etc) to divide during the M phase.During the cell cycle, a cell modulates its division by communicating with other cells via specific chemical messenger molecules known as cyclins. Cyclins are proteins that interact with Cyclin-dependent kinases (CDKs) and thus function as molecular switches that regulate the progression through the cell cycle.In conclusion, a healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.
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what risk does liquefaction pose during an earthquake?
Answer:
It can turn loose soil into a liquid during an earthquake. supports of buildings, bridges, pipelines, and roads, causing them to sink into the ground, collapse or dissolve.
Explanation:
Which molecule is a high energy output of photosynthesis
One goal of scientists is to assign every organism a universally accepted name according to the system known as
Answer:
Binomial Nomenclature
Explanation:
Karl Line is the creator of the binomial nomenclature, which leads to uniqueness in naming plants and categorizing plants into classes, orders, genders, and species.
Binomial nomenclature in biology denotes the official method of naming species. As the word itself suggests, the scientific name is formed by a combination of two expressions: the name of a genus and a species.
You are given a protein with the following amino acid sequence:
methionine (nonpolar)-glycine (nonpolar)-serine (polar)-alanine (nonpolar)-lysine (polar)
If an amino acid substitution occurred in this polypeptide chain, predict which option would have the most
significant impact on the structure and function of the protein.
a. Serine is replaced by lysine (polar)
b. Glycine is replaced by alanine (nonpolar)
c. Alanine is replaced by leucine (nonpolar)
d. Lysine is replaced by tryptophan (nonpolar)
?
Answer:
d. Lysine is replaced by tryptophan (nonpolar)
Explanation:
Amino acid substitutions can have varying affects on the protein function, depending on the specific substitution and the location of the substitution.
If the substitution occurs in an important region, for example an enzyme active site, then the function of the protein could be destroyed.
Additionally, if the substitution replaces the amino acid with a highly different amino acid with different properties (eg. polarity), it could alter the structure and function of the protein.
Replacing lysine (polar) with a tryptophan (non-polar) changes the properties of the amino acid at that location, whereas the other substitutions do not.
Melanin is a that is produced in organelles called in specialized cells called ________.
Answer:
Melanocytes
Explanation:
Melanocytes produce the protective skin-darkening pigment melanin. Melanocyte, specialized skin cell that produces the protective skin-darkening pigment melanin. Birds and mammals possess these pigment cells, which are found mainly in the epidermis, though they occur elsewhere like in the matrix of the hair.
Melanin is a that is produced in organelles called in specialized cells called
MelanosomesMelanin is a dark pigment that is found in the skin of a human. This factor affects the color of the eyes, hair, etc in people as the more melanin available in the body, the darker these parts of the body are.
A specialized cell is responsible for the production of melanin called melanosomes and this is in varying quantities in different people.
Melanosomes are those cell nucleus that are responsible for the production, storage and transfer of melanin to the parts of the body.
Therefore, the correct answer is melanosomes
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Which of these zones of the ocean is deepest?
A. Abyssopelagic
B. Epipelagic
C.Hadalpelagic
D. Bathypelagic
hadalpelagic is the zone of the ocean is deepest.
Write a food chain from this food web with six trophic levels.
Link In Comments
Answer:
where is the link I didn't see in comments
ALOT OF POINTS MARKING POEPLE AS BRAINLIST
Look at the graph. Explain how the two population are related to each other
a flea and dog are a. example of
Answer:
Parasitism
Explanation:
A flea and a dog go with this example because a flea irritates the dogs skin and feeds on its blood. (Just like how some sea animals carry bacterial diseases. Like Shrimp or something)
Hope this helped xoxo! :)
Write a paragraph 4-5 sentences as to which one you think is better sexual or asexual reproduction
Answer:
Asexual
Explanation:
I think Asexual reproduction is better because you only need one reproduction Creature. For example plants, they are asexual so they do not need to worry about mating. Instead they can just create more plants by doing nothing. This helps us because we get more plants in a shorter amount of time. another example of Asexual reproduction is cross-pollination which is also an amazing way of creating more plants in a shorter time.
Which process do seeds undergo under favorable conditions?
elogation
fertilization
pollination
germination
Answer:The answer is Germination
Explanation: I took the test
Atoms of A decay to atoms of B with a half-life of 200,000 years. If there are 20,000 atoms of A to begin with, how long will it take for there to be 2,500 atoms of A?
Answer:
The correct answer is: 600,000 years
Explanation:
Half-life is the time which is essential or required to decrease a specific substance to half of its initial amount of the substance. So, if a substance has a half-life of 200,000 years then it means it takes 200,000 years to decrease or change into a new substance and remain half of its initial quantity.
half-life amount
0 20000
1 10000
2 5000
3 2500
total half-life = 3 to 2500 atoms of A
so, the time will be = 3 * 200,000 years
= 6000000
please help me with this question:)
A cold front often brings intense weather changes such as thunderstorms while a warm front often brings light rain or drizzle. Why is this the case?
Answer:
The front term is associated with an area where two air masses met and as it is usually the condition with heavy rain, fierce wind, snow and other violent weather like a war situation. The front could be warm, cold, occluded or stationary depends on the type of weather.
The cold front is associated with lots of thunderstorms and other intense weather while the warm front changes with drizzly rain and warmer weather due to the fact that in a cold front, replacement of warm air by the cold air is faster while in a warm front, the replacement of cold air by warm air is gradual
Digestion and breathing are _____. controlled by ganglia and plexus reflexive actions controlled by the spinal cord voluntary actions controlled by the central nervous sytem
Answer:
The correct answer is - reflexive actions controlled by the spinal cord.
Explanation:
Digestion and breathing are examples of involuntary action which is controlled by the autonomic nervous system of the CNS. however, the part of the nervous system that controls is the spinal cord and hind brain by the spinal reflex actions.
These are the action they do not require any thought and work without any thought that leaves the brain for other actions and coordinations. specific but the same stimuli causes the response in the same way.
Put the steps in the proper order to explain the flow of information from the DNA sequence to a functional protein.
1. The codon sequence in mRNA determines the amino acid sequence in a polypeptide.
2. Each codon in mRNA codes for a specific amino acid.
3. The sequence of amino acids in a polypeptide determines how the protein will fold and possibly bind with other polypeptides to form a mature protein.
4. The final structure of a protein determines its function.
5. Each three nucleotides in the gene template DNA codes for a three nucleotide codon in mRNA.
Answer:
5. Each three nucleotides in the gene template DNA codes for a three nucleotide codon in mRNA.
2. Each codon in mRNA codes for a specific amino acid.
1. The codon sequence in mRNA determines the amino acid sequence in a polypeptide.
3. The sequence of amino acids in a polypeptide determines how the protein will fold and possibly bind with other polypeptides to form a mature protein.
4. The final structure of a protein determines its function.
Explanation:
The process of gene expression follows the central dogma of biology I.e. Gene (DNA) --> mRNA ---> Protein. The process of gene forming mRNA is called transcription while the process of mRNA forming protein is called translation.
Based on this, the order of the flow of information from the DNA sequence to a functional protein is:
- Each three nucleotides in the gene template DNA codes for a three nucleotide codon in mRNA (transcription).
- Each codon in mRNA codes for a specific amino acid.
- The codon sequence in mRNA determines the amino acid sequence in a polypeptide (translation).
- The sequence of amino acids in a polypeptide determines how the protein will fold and possibly bind with other polypeptides to form a mature protein.
- The final structure of a proteiin determines its function.
The order is 'three nucleotides in DNA codes for a codon', 'each codon codes an amino acid', 'codon sequence determine amino acid sequence', 'amino acids determine protein folding' and 'final protein structure determines its function'.
During gene transcription, a fragment of DNA referred to as 'gene' is used as a template to create an mRNA, which is then used to synthesize a polypeptide.
The triplets of nucleotides or 'codons' in the mRNA sequence determine the amino acid sequence in the nascent polypeptide chain.
The synthesized protein is then folded in the endoplasmic reticulum (ER) and thus adopts its three-dimensional (3D) conformation.
Protein folding is achieved by specific proteins called chaperones that help to correctly fold the protein, which adopts a mature conformational active state.
In conclusion, the order is 'three nucleotides in DNA codes for a codon', 'each codon codes an amino acid', 'codon sequence determine amino acid sequence', 'amino acids determine protein folding' and 'final protein structure determines its function' (order 52134).
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What type of cells are produced during meiosis?
Answer:
gamete cells :)
Explanation:
hope this helps
Haploid cells are produced during meiosis.
Identical haploid daughter cells are produced from diploid parent cell.This process is required to produce egg and sperm cells for s exual reproduction.What is meiosis?Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for s exual reproduction.Cell division occurs twice during meiosis, one starting cell can produce four gametes.In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.To know more about meiosis here
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What term is used to describe the number of individuals moving into a population?
SOMEONE PLZ HELP!!!!!!!!!
Answer:
the central vacuole.
Explanation:
the vacuole is responsible for discarding waste within the cell.
Answer:
central vacoule because it is just like a vacum :)
Explanation: