Virus can spread to infect secondary sites either through the bloodstream or through neurons.
What is hematogenous and neurotropic spread?In hematogenous spread,
Virus spreads to other organs through the bloodstream.Can be by direct injection into the blood or due to the virions entering the interstitial fluid that bathes our cells. Eg: HIV (Human Immunodeficiency Virus)In neurotropic spread,
Virus spread throughout the body using neurons.Virus 1st infects neurons of PNS (Peripheral Nervous System) from where they spread to the CNS (Central Nervous System) which may ultimately lead to death. Eg: Rabies virusLearn more about viral infections here:
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DNA is coiled into chromosomes in a cell’s
Answer:
I DONT UNDERSTAND THE QUESTION
Explanation:
Who was the first scientist to us phylogenetic taxonomy
Answer:
Charles Darwin (1859)
Explanation
Is usually credited as being the originator of modern phylogenetic trees, with contemporary taxa at the leaves and ancestors at the internal nodes.
A. according to the data, what ph is optimum for bread mold growth? how do you know?
Explanation:
Fungi can grow in various pH levels, however oxygen would need to be present in the process. Increased mold growth has typically been seen in pH levels. The pH levels below 7 generally have had increased mold growth. mold growth on bakery product spoilage and partly look into the affects of pH on the bread.
Facilitated diffusion is a type of _______. Facilitated diffusion is a type of _______. passive transport active transport pinocytosis phagocytosis
Facilitated diffusion is a type of passive transport.
What is facilitated diffusion?Facilitated diffusion is the process in which molecules diffuse across the plasma membrane with the help of membrane proteins, such as channels and carriers.Selective processEven though it involves transport proteins, it is passive because the solute is moving down the concentration gradient whereas in active process molecules move against concentration gradient.Small nonpolar molecules can easily diffuse across the cell membrane.Learn more about active and passive transport here:
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Cells that primarily produce steroid hormones, such as testosterone and estrogen, have large quantities of.
Answer: Smooth endoplasmic reticulum
Cells that primarily produce steroid hormones, such as testosterone and estrogen, have large quantities of smooth endoplasmic reticulum.
Thus, Depending on whether ribosomes are present or not, the endoplasmic reticulum may be smooth or rough.
Small, spherical organelles called ribosomes produce the proteins that cells need.
They are also known as the cell's protein factories. Ribosomes are found in both bacterial and eukaryotic cells. The two forms of ER frequently give the impression of being distinct, yet they are actually parts of the same organelle, the endoplasmic reticulum.
Thus, Cells that primarily produce steroid hormones, such as testosterone and estrogen, have large quantities of smooth endoplasmic reticulum.
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The action potential spreads through an axon by Group of answer choices depolarizing adjacent membrane to threshold, triggering another action potential. inflow of potassium ions and outflow of sodium ions. a non-decremental of graded potential. a decremental of graded potential.
The action potential spreads through an axon by depolarizing adjacent membrane to threshold.
K+ departs the cell after Na+, which enters the cell first. Ions can move freely across the axon membrane because of the difference during the action potential.Because sodium contains a positive charge, the neuron becomes more positive and depolarized. Potassium channels take longer to open. As soon as the cell does open, K+ rushes out, reversing the depolarization known as repolarization.Sodium channels close during the peak of the action potential when potassium leaves the cell. When potassium ions are effluxed, the membrane potential is lowered or the cell becomes hyperpolarized.Outside of the cell, the concentration of Na+ is greater than inside the cell. while the concentration of K+ is is greater inside the cell than outside.learn more about action potential here: brainly.com/question/6705448
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Medicine is an example of pure science.
True
False
Replacing native gel electrophoresis with nonreducing sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) during the purification step results in eluates with no enzymatic activity. The best explanation of this observation would be:
Replacing native gel electrophoresis with SDS results in eluates with no enzymatic activity because it confers a negative charge to proteins, thereby neutralizing them.
What is sodium dodecyl sulfate?The sodium dodecyl sulfate (SDS) is a detergent used in molecular biology laboratories.
This detergent (SDS) confers a negative charge to proteins, thereby neutralizing them (loss of their enzymatic activity).
In conclusion, SDS results in eluates with no enzymatic activity because this detergent may neutralize them.
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Pollination by birds is called:
w) autogamy
x) ornithophily
y) entomophily
z) anemophily
Answer:
x) OrnithophilyWhen pollination is carried out by birds, it is called "Ornithophily." Hummingbirds, spiderhunters, sunbirds, honeycreepers and honeyeaters are the most common species of birds who pollinate. Hummingbird facts.Explanation:
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What are the key important things you need to know about dna
For revision notes
Answer:
Nucleic acids are the organic materials present in all organisms in the form of DNA or RNA.
These nucleic acids are formed by the combination of nitrogenous bases, sugar molecules and phosphate groups that are linked by different bonds in a series of sequences.
Explanation:
“DNA is a group of molecules that is responsible for carrying and transmitting the hereditary materials or the genetic instructions from parents to offsprings.”
DNA is known as Deoxyribonucleic Acid. It is an organic compound that has a unique molecular structure. It is found in all prokaryotic cells and eukaryotic cells.
The four roles that DNA plays in the cell are:
(1) storage of information via the genetic code so that cellular processes can be initiated and maintained.
(2) the generation of genetic variation through mutation and recombination.
(3) The copying and replication of genetic information so that it can be passed onto daughter cells. It is this function that makes DNA the molecule of inheritance.
(4) gene expression. The transcription and translation of genetic material to produce proteins, enzymes and other gene products necessary for growth and life.
can someone help with this activity please!
Answer:
Replicated DNA Sequence: CCC | CTC | TTA | CTT | TGA | CAA | ACA | TCG
Transcribed RNA Sequence: GGG | GAG | AAU | GAA | ACU | AUU | UGU | AGC
Mystery Word: GENETICS
Explanation:
Original DNA Sequence:
GGG | GAG | AAT | GAA | ACT | ATT | TGT | AGC
Replicated DNA Sequence: Adenine--Thymine, Guanine--Cytosine
CCC | CTC | TTA | CTT | TGA | CAA | ACA | TCG
Transcribed RNA Sequence: Adenine--Uracil
GGG | GAG | AAU | GAA | ACU | AUU | UGU | AGC
Mystery Word: Use the codon chart
G - E - N - E - T - I - C - S
When groundwater is depleted, the ground surface above can sink down over time. This is
called:
Select one:
O a. Ground Loss
O b. Subtrusion
O c. Subsidence
O d. Land Subsistence
Answer:
The answer is D
Explanation:
When groundwater is depleted, the ground surface above can sink down over time. This is called Land Subsistence. Thus, option "D" is correct.
What causes subsidence?Subsidence is a phenomenon of lowering of the ground surface due to changes in the underground support. The phenomenon occurs in several places in the world due to the
extraction of wateroiland gas from the subsoil.With this information, we can conclude that Land subsidence is related to human population growth.
Thus, option "D" is correct.
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Toward the end of heavy exercise lasting 3 hr or more, _______________ provides almost all the carbohydrate used by the muscles.
Toward the end of heavy exercise lasting 3 hr or more, glycogen provides almost all the carbohydrates used by the muscles.
Glycogen stored in active muscles supplies almost all of the energy in the transition from rest to moderate submaximal exercise. During the initial hour of submaximal prolonged exercise, muscle glycogen is the main carbohydrate source. However, muscle glycogen levels decrease over time and more blood glucose is used. It takes 3,500 calories to burn a pound of fat.
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What other system of measurements is still used by a few countries?
Explanation:
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which type of organism can obtain energy directly from any of the other organisms in an ecosystem? is it herbivour,producer decompocer or carnivour
Answer:
Herbivores
Explanation:
Herbivores obtain energy directly from producers (i.e green plants)
An organism that must eat
food to obtain its energy is
a(n)
A. Producer
B. Autotroph
C. Biomass
D. Heterotroph
Answer:
D. Heterotroph
Explanation:
Heterotrophs rely on outside food sources, such as plant or animal materials, for their energy. In contrast, photo- or chemoautotrophs obtain their energy and building materials from the sun or from inorganic chemicals.
A proto-oncogene may not only move next to another gene, but also be transcribed and translated with it as if they are one gene. The double gene product is called a(n)
The double gene product is called oncogene
What is oncogene?Numerous crucial genes that control cell growth and division are present in your cells. Proto-oncogenes are the names given to these genes in their normal state.Many vital genes that control cell division and proliferation are present in your cells. Oncogenes are the mutated versions. Oncogenes can cause cancer by causing uncontrolled cell division.Activation is the process through which a proto-oncogene becomes an oncogene. Numerous genetic processes, such as transduction, insertional mutagenesis, amplification, point mutations, and chromosomal translocations, can activate proto-oncogenes.Learn more about gene here:
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hy is the pressure in the matrix high?
The pressure in the matrix high due to the abundance of water molecules present in the region.
What is a Matrix?
These are referred to non living substances or tissues which occupy the vacant region of cells.
They have enough water molecules which exerts a great amount of pressure thereby making it high.
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In the condensation part of the water cycle, what is the change of state that water goes through?
A: From gas to liquid
B: From liquid to gas
C: Form liquid to solid
D: From solid to gas
During condensation, water changes state from gas to liquid.
What is condensation?Condensation is a physical process whereby water in gaseous forms loses energy and becomes liquid.
The high-energy gaseous molecules in water vapor condense into liquid when a certain amount of energy is lost.
In the water cycle, condensation happens in the form of precipitation. Precipitation could be in the form of rain or snow.
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If mutant HMGN2 proteins were unable to bind their substrate and then erroneously mobilized to nucleoli, these proteins would be found in the sites of:
If mutant HMGN2 proteins were unable to bind their substrate and then erroneously mobilized to nucleoli, these proteins would be found in the sites of Ribosome production.
In this case, mutant HMGN2 proteins deploy inadvertently to nucleoli. The nucleolus, a bulky, globular structure inside the nucleus of eukaryotic cells, houses ribosomal DNA. Here, the pre-ribosomal RNA (rRNA) gene is solely translated into a single template that is then processed to produce mature rRNA by RNA polymerase I. As a result, the nucleolus is the only location where RNA polymerase I can work.Additionally, ribosomal subunit maturation and assembly take place in the nucleolus. The cytoplasm produces ribosomal proteins from mRNA, which are then carried into the nucleolus where they interact with newly produced rRNA to generate the precursors to the 40S and 60S subunits.learn more about HMGN2 proteins here: https://brainly.com/question/884041
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What is the main difference between a prokaryotic cell and eukaryotic cell?
Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
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which molecule most likely has the greastest amount of stored energy in its bond
Answer:
O=C=O
Explanation:
Why does an analysis of all an animal’s genes reveal more about its classification than studying its visible features or behavior?
The analysis of all an animal’s genes reveals more about its classification than behavior because fine-tuning evolution is evidenced by homo-logous sequences.
What is sequence homo-logy?Sequence homo-logy refers to different nucleotide sequences that are similar due to a common origin.
Behavior may be due to the convergence of a feature in distinct lineages, but evolution is largely determined by homo-logy between gene sequences.
In conclusion, fine-tuning evolution is evidenced by homo-logous sequences.
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Two genes are 14 map units apart on the X chromosome. What percent of the father's gametes will be recombinant
Two genes are separated by 14 map units on the X chromosome. The percentage of the father's gametes that will be recombinant is 30%.
How is the recombination rate calculated?To assess the occurrence of the permutation, the rate of recombination between two genes is determined. As the ratio is multiplied by 100, the value expresses the percentage of recombinant gametes in the total gametes. Thus, if the recombinant gametes make up 30% of the total, the recombination rate is 30%.
With this information, we can conclude that Parental Gametes are formed even if there is no recombination and appear in greater numbers. Recombinant Gametes are formed only if there is an exchange and appear in smaller numbers.
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Compare and contrast genetic engineering to the process of natural selection select all statements that are are
Genetic engineering is due to the human selection of desired phenotypes, whereas natural selection is a slow process of differential survival and reproduction.
What does natural selection mean?According to the evolution theory, natural selection is a slow process of differential survival of the fittest organisms in a given environment.
Conversely, genetic engineering refers to the molecular biology techniques used in the laboratory to produce organisms expressing desired phenotypes.
In conclusion, genetic engineering is based on human molecular biology techniques, whereas natural selection refers to differential survival and reproduction in nature.
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Thyroid hormones A. regulate basal metabolic rate B. are released from the thyroid gland immediately after synthesis C. contain chromium and tyrosine as structural cofactors D. are tropic E. A and B
Thyroid hormones regulate basal metabolic rate.
The hormone known as thyroid hormone regulates your body's metabolism, or how your body turns the food you eat into energy.Thyroxine (T4) and triiodothyronine (T3), the two primary hormones your thyroid secretes, together make up thyroid hormone.The thyroid gland creates hormones that control the body's metabolic rate, which affects bone growth and maintenance, heart, muscle, and digestive function.Thyroid hormones regulate the amount of energy expended during activity to the extent that people with thyroid disorders exercise more or less. They also have a direct impact on the basal or resting metabolic rate in humans and a permissive effect on small animals' adaptive thermogenesis.learn more about Thyroid hormones here: https://brainly.com/question/9251938
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In the alveoli of the lungs, air crosses into and out of the capillaries by what process? Perfusion Diffusion Osmosis Vaporization
In the alveoli of the lungs, air crosses into and out of the capillaries by the process of diffusion because the oxygen moves from higher concentration region to lower concentration region.
What is diffusion?Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. This process requires no energy.
So we can conclude that diffusion is the right answer.
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I need help with these questions
Answer:
1. Vacuole, nucleotide, mitochondria, Golgi apparatus can all occur in certain eukaryotes. I would say 2,3,4 is the safest answer but you might want to wait for someone else as well
2. B
Explanation:
Find the missing link:
Answer:
biotic
Explanation:
After allowing phages grown with bacteria in a medium that contained 32P and 35S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained _____, which demonstrated that _____ is the phage's genetic material. After allowing phages grown with bacteria in a medium that contained 32P and 35S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained _____, which demonstrated that _____ is the phage's genetic material. labeled DNA ... DNA labeled DNA ... labeled protein labeled protein ... DNA labeled protein .... protein labeled DNA .... protein
After allowing phages grown with bacteria in a medium that contained 32P and 35S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained 32P which demonstrated that DNA is the phage's genetic material.
Scientists weren't sure if a cell's genetic material was made up of proteins or DNA until the middle of the 20th century.It was known that some viruses could transmit their genetic material into hosts and only contained DNA and a protein coat.Alfred Hershey and Martha Chase performed several tests in 1952 to demonstrate that DNA was the genetic material.In order to radioactively label a particular viral component, viruses (T2 bacteriophage) were cultured in one of two isotopic media.Viral proteins that had been radiolabeled during growth in radioactive sulfur (35S) (sulfur is present in proteins but not DNA)Radiolabeled DNA was found in viruses growing in radioactive phosphorus (32P) (phosphorus is present in DNA but not proteins)After the viruses had a chance to infect the bacteria (E. coli), they were centrifuged to separate the bacteria from the virus.While the tiny viruses stayed in the supernatant, the larger bacteria formed a solid pellet.The 32P-viruses (DNA) were found to make the bacterial pellet radioactive, but not the 35S-viruses (protein)Because DNA was transferred to the bacteria, it was proven that DNA, not protein, was the genetic material.learn more about Hershey and Chase experiment here: https://brainly.com/question/14452453
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