Answer:
A. Auxotroph 4. requires at least one nutrient for growth
B. Conjugation 1. requires cell-to-cell contact
C. Hfr 6. E. coli strain with Ffactor integrated into bacterial genome
D. Transduction 7. requires virus
E. F' 5. F factor that has picked up a piece of the bacterial genome
F. Transformation 3. uptake of DNA from external medium
G. Competent 2. capable of taking up DNA
Explanation:
Auxotrophs are those organisms able to synthesize organic compounds required for their growth.
Conjugation is the genetic transfer between bacteria through cell-to-cell contacts.
In bacteria, the Hfr chromosome is linearly transferred from F to F- cells.
Transduction is a genetic process where exogenous DNA fragments are introduced into another cell via a viral vector.
The F factor (fertility factor) is a bacterial plasmid that allows to transfer genetic information between donor and recipient cells during conjugation.
Bacterial transformation is the horizontal transfer of genetic material by which bacteria obtain DNA from its environment.
In bacteria, competence refers to the ability to take up exogenous DNA from the external environment.
What usually happens to the host’s DNA during the lytic cycle? It is destroyed. It is integrated with the viral DNA. It becomes a provirus. It is deactivated.
The correct answer is A. It is destroyed
Explanation:
The term "lytic cycle" refers to one of the main processes viruses use to replicate in a host. In this, the virus first enters the cell, then destroys the ADN of the host, takes control over the cell and replicates, and finally, lysis occurs (the cell membrane is disintegrated and the replicated virus tries to infect other cells). This implies in this process the host's DNA is destroyed as this process is necessary for the replication of the virus that uses the energy and sources of the cell.
Answer:
It is destroyed.
Explanation:
The lytic cycle is a cycle present in viral reproduction. In this cycle, a virus in contact with a host cell, manages to insert its genetic DNA into the cell causing the cell to metabolize it and start working for it. After the viral DNA is metabolized and multiplied, the virus releases its viruses through the complete destruction of the host cell.
With this, we can say that during the execution of the lytic cycle, the DNA of the host cell is destroyed.
A scientist is studying antibiotic properties in a species of endangered coral that she believes may be useful in fighting an infection that plagues humans. What is the best way an individual can help this scientist with her investigation of this coral?
Answer:
the scientist can analyse the coral particals under a microscope and
Answer: Be careful not to disrupt coral reefs when snorkeling or fishing, so that the coral and other diverse organisms that live near it, can be studied carefully by scientists.
Explanation: Just took the test.
Record the height of the plants growing in the
acidic soil.
A. Stating the question or problem
B. Drawing a conclusion
C. Forming a hypothesis
D. Conducting an experiment
Answer:
D. Conducting an Experiment
Explanation:
Answer:
D. Conducting an experiment
Explanation:
name 3 important features of blood in your body
Answer:
1. Red blood cells for transportation of oxygen and carbon dioxide in and out the body.
2. White blood cells for fighting against harmful substances in the blood stream.
3. Blood platelets for blood clot during an injury.
Explanation:
Hope it helps.
Osteoporosis os most likely to be affected by which cycle
Answer:
phosphorus its correct
Explanation:
Osteoporosis is characterized by Group of answer choices keratinization and death of epithelial cells. defective collagen production. immature red blood cells that lack hemoglobin. loss of bone mass and structure.
Answer: osteoporosis actually caused by lack of calcium
Explanation:
It is most common in womans....
And also immature red blood cells due to which blood calcium level decrease and cause osteoporosis
Select the accurate statement(s) regarding the divisions of the nervous system.
A. The sympathetic division tends to arouse the body for action.
B. The sympathetic division tends to arouse the body for action.
C. The visceral motor division (autonomic nervous system) carries signals to glands, skeletal muscle, and smooth muscle.
The given question is incomplete as there is an option twice and other options are not provided. however, the complete option for the question is as follow:
a) the sympathetic division tends to arouse the body for action.
b) the visceral motor division(ANS) carries signals to glands, skeletal muscle, and smooth muscle.
c) the somatic motor division carries signals to the somas of the neurons.
d) the parasympathetic division tends to have a calming effect.
e) the CNS has both a sensory and motor division.
Answer:
The correct statements are -
a) the sympathetic division tends to arouse the body for action.
d) the parasympathetic division tends to have a calming effect.
Explanation:
The sympathetic division regulates organs and glands during crises. It helps the body in crisis to act on the basis of fight or flight. For instance, it builds the pulse and the progression of blood supply to the legs, so you can flee from risk.
The parasympathetic sensory system is liable for the body's rest and processing reaction when the body is loose, resting, or taking care of. It essentially fixes the work does by sympathetic division after an unpleasant circumstance.
Thus, the correct statements are -
a) the sympathetic division tends to arouse the body for action.
d) the parasympathetic division tends to have a calming effect.
Which of the following is the measure of the
chair's mass, or the amount of particles it has?
A. the length of a chair
B. the temperature of the chair
C. the color of the chair
D. the amount of matter in the chair
Suppose that you discover cells containing a mutation in a second protein and learn that this mutation also prevents mitotic cyclin from being degraded at the onset of mitosis, even when mitotic cyclin is normal. The degradation of other proteins appears to proceed normally in such cells. A mutation in what kind of protein might explain such results
Answer:
Mutations affecting proteins involved in the ubiquitination pathway
Explanation:
The cyclins represent a group of proteins capable of regulating the progression of the cell cycle via activation of cyclin-dependent kinases (CDKs). Cyclins are degraded by ubiquitination, a posttranslational modification that triggers the exit of mitosis by "marking" cyclin proteins for their subsequent degradation in the proteasome. The proteasome is a macromolecular complex required for the degradation of proteins in the cell. Then consequently the mutations affecting both secondary proteins required during ubiquitination and those involved in the functioning of the proteasome complex might prevent the degradation of cyclin proteins.
Find the slope of the line that passes through the points (-4, -4) and (4, 8).
Answer: The slope of the line that passes through the points (-4, -4) and (4,8) is 3/2
Two of these answers are mixed up and I need help to figure out which two those are
The sternum is anterior/ventral to the vertebrae.
The feet are inferior to the hands.
The elbows are lateral to the abdomen.
The skin is superficial to the skeleton.
The heart is posterior/dorsal to the sternum.
The lungs are deep to the ribs.
The chest is superior to the abdomen.
The knee is distal to the hip.
The fingers are medial to the thumb.
The elbow is proximal to the wrist.
The answers i have in italics are what i chose. it tells me i have two wrong and i can't figure out which two need switched.
Answer:
The correct answers are "The heart is posterior/dorsal to the sternum" and "The lungs are deep to the ribs".
Explanation:
It is not true that the heart is posterior/dorsal to the sternum. Actually, it is considered that the heart is deep to the sternum, as well as the aorta, vena cava, and thymus gland. On the other hand, the lungs are posterior/dorsal to the ribs. The lungs are located in the thoracic cavity, which is extending anteriorly and laterally to the ribs.
The amino acids in bacteria and plants can be classified in families based on the precursor molecule in the synthesis pathway of each family member. Each family shares a name with its molecular precursor. Identify the family to which each amino acid belongs.
The given question is incomplete, the complete question is attached in the image format with the answer:
Answer:
1. aspartic acid :
asparagine
methionine
lysine
threonine
2.glutamic acid :
glutamine
proline
arginine
ornithine
3. pyruvic acid :
alanine
valine
leucine
isoleucine
4. chorismic acid :
phenylalanine
tyrosine
trypthophan
5. serine :
cysterine
glycine.
the question
8. Mammary glands are a shared characteristic among mammals and the oldest common ancestor of mammals. This is an example of a
O A. cladogram
O B. taxonomy
O C. phylogeny
O D. synapomorphy.
ASAP Where in an organism does osmosis occur? A. None of these answers is correct B. It only occurs in semi-permeable membranes, which are not found in organisms C. Across cell membranes D. In the lungs
Answer:
The answer is option C.
Hope this helps you
What should be done following health violations from an inspection?
Answer:
correct the identified
Explanation:
If health violations are found out during inspections, the inspector should give him warning about the violation or give him a ticket or fine. If high level of violation if found out, then the license of the restaurant or company should be cancelled.
What is heath violation?Health violation is avoiding the condition that are necessary for health during the process or manufacturing. These violation leads to the poor health of the people.
Health inspectors are the person who check the conditions of hotel and factories related to the health of the people. If they found any violation, the companies should correct them.
Thus, the inspector should issue him a warning about the infringement or issue him a ticket or fee if any health violations are discovered during inspections. If a serious breach is discovered, the restaurant's or business' license should be revoked.
To learn more about heath violation, refer to the link:
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During photosynthesis, the energy from sunlight is used to split water molecules. What happens to the hydrogen ions that are
split from the water molecules?
Answer: hydrogen is incorporated into glucose
Explanation:
6CO2 + 6H2O —> C6H12O6 + 6O2
Which of the following is true regarding DNA? a) It is single stranded and pleated in shape b) It is used by organisms as a source of energy c) Complementarity states that Adenine will always bind with Thymine d) It is classified as a protein
Answer:
c) Complementarity states that Adenine will always bind with Thymine.
Explanation:
Hope it helps.
as an aspiring nurse,the need for the culture of a new pathogenic microorganism in the laboratory has been allocated to you. Applying all the guidelines involved in the successful isolation and cultivation of microbes, discuss the culturing system that is most appropriate for this activity and state your reasons for this choice
Answer:
The culturing system depends on the sort of microbe allotted to segregate namingly bacteria, viruses, or fungi. Each microbial pathogen has particular culture media for disconnection and for development or replication, we need culture media.for model bacterial pathogen can be separated by plating the example in fitting media by 3 strategies that are streak plate or pour plate or spread plate
Out of the above streak, plate gives the best outcomes in single disengaged provinces which can be additionally cultured and characterized for creation of pure culture
Construct the sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues.
1. tissue levels of ascorbic acid is low
2. enzyme prolyl hydroxylase is inactive
3. proline is not hydroxylated
4. the triple helix is inadequately stabilized .
5. collagen breaks down
6. defects in tissues that depend on collagen
7. tissues that depend on collagen are subject to breakdown and bruising
Answer:
1. the levels of ascorbic acid in the tissues are low
2. the enzyme prolyl hydroxylase is inactive
3. proline is not hydroxylated
4. The triple helix is inadequately stabilized.
5. collagen breaks down
6. collagen-dependent tissue defects
7. Collagen-dependent tissues are subject to breakdown and bruising
Explanation:
Vitamin C deficiency or vitamin C hypovitaminosis generates an oatology called scurvy, in this pathology there are tendon problems and fragility at the tissue and vascular level.
This is because of the low antiquity of vitamin c that is necessary for the correct synthesis of collagen, the collagen helices formed by the fibroblast are considered of poor quality and thus do not fulfill the function of support, containment and body in the tissues.
Vessels are highly contained by collagen and tissues as well, which is why hematomas appear due to vessel rupture and blood exacerbation in the extracapillary medium.
Which component of a virus is injected into an infected cell? ribosome nucleic acid protein capsid mitochondrion
Answer: The component of virus is injected into an infected cell is RNA or DNA, aur nuclei acid.
Explanation:
Nucleic acid is injected into an infected cell.
What component is injected into the infected cell?During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it. During uncoating, replication, and assembly, the viral DNA or RNA incorporates itself into the host cell's genetic material and induces it to replicate the viral genome.
What does the nucleic acid do in a virus?Nucleic Acid - Just as in cells, the nucleic acid of each virus encodes the genetic information for the synthesis of all proteins. While the double-stranded DNA is responsible for this in prokaryotic and eukaryotic cells, only a few groups of viruses use DNA.
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In the case of two EPSPs occurring at a single synapse, which of the following will produce a subthreshold effect and not generate an action potential on the postsynaptic neuron’s axon hillock?
a. Both EPSPs occurring in rapid succession
b. The summed EPSPs depolarizing the axon hillock membrane to —70 mV
c. Both EPSPs occurring before the postsynaptic membrane potential returns to —55 mV
d. Both potentials occurring after the postsynaptic membrane potential returns to its resting value
Answer:
Both potentials occurring after the postsynaptic membrane potential returns to its resting value
Explanation:
This is simply because, a neuron returning to its resting state,will have the ligand gated Na+ channels closed.Therefore depolarization can not occur.More K+ gated channels will open, and more K+ leaks out of the axoplasm,returning the neuron to the resting state.
Hence if the summation of the two EPSP returns to the resting level after crossing the synapse, they can not propagate,and generate action potential, because they will produce a sub threshold effects,which will not generate action potential.
According to research, what role do genes play in determining whether someone will develop an anxiety disorder
Answer: Here are the options.
A. Unknown
B. No role.
C. Fully determines.
D. Can contribute but does not fully determine.
The correct option is D.
Can contribute but does not fully determine.
Explanation:
According to research, Genes can contribute to anxiety disorder but cannot fully determine because certain chromosomal or genes are linked to panic or anxiety disorder. Scientist discovered that RBFOX1 gene may make someone more likely to develop generalized anxiety disorder which shows that anxiety disorder are linked to genes. Anxiety disorder can be inherited and it is linked to specific genes.
Anxiety disorder is a feeling and not a mental illness. They symptoms of anxiety disorder are phobias, excessive worrying, memory problems, tensed muscles, irritability, struggle to sleep e.t.c. Some environmental factors also can contributed to anxiety disorder.
The cyclin B–Cdc2 complex controls the passage from G2 into M and is assembled before mitosis however, its catalytic activity is restricted to mitosis. What process is responsible for the activation of the cyclin B–Cdc2 complex?
Answer:
Phosphorylases that selectively add phosphate groups to the Cdc-2 subunit, thereby activating this complex.
Explanation:
The cyclin B-Cdc-2 (also known as maturation-promoting factor or simply MPF) complex is activated when it enters into the nucleus during the G2/M transition in the cell cycle. Cdc-2 is a protein kinase that associates with cyclin proteins. These proteins (cyclins) regulate the cell cycle by activating cyclin-dependent kinases. It is well known that phosphorylation of the Cdc2 subunit at different residues can both activate and inactivate the MPF complex. Moreover, enzymes capable of both inactivating phosphorylases and activating phosphatases have also shown to be able to activate MPF.
has four pairs of chromosomes what proportion of gametes would be expected to contain some chromosomes from both parental and maternal origin? assume that there is no crossing over
Answer:
To complete the question: a diploid organism has four pairs of chromosomes what proportion of gametes would be expected to contain some chromosomes from both parental and maternal origin? assume that there is no crossing over
Answer: 7/8
Explanation:
A diploid organism with four pairs of chromosomes...
Assume that the organism receives chromosomes A, B, C and D from the female parent and A', B', C' and D' from the male parent.
Proportion of gametes from patterns origin is the same as that of matters origin, this we have:
(1/2)^4 = 1/16 where 4 reps the number of possibilities, 1/2 rep the chance
Thus, the proportion of gametes expected to contain some chromosomes from both parental and maternal origin would be
(1 - (1/16 + 1/16)) = 14/16 = 7/8
The discovery of RNA interference (RNAi) led to its use in biotechnology and medicine. All of the following are examples of how RNAi could be used in biotechnology or medicine, EXCEPT ________.
a. to treat a disease characterized by a gene that is not expressed.
b. to study loss-of-function phenotypes of specific genes in a model research organism.
c. to treat a disease characterized by the buildup of a specific protein.
d. to treat a disease characterized by the overexpression of a nonmutated gene.
e. to treat a disease characterized by the normal expression of a mutated gene
Answer:
a. to treat a disease characterized by a gene that is not expressed.
Explanation:
The RNA interference (RNAi) technique is widely used in molecular biology to inhibit target gene expression at the post-transcriptional level. The RNAi technology uses small interfering RNAs (siRNAs) consisting of 18-22 nucleotides that bind to complementary acid nucleics (i.e., DNA and RNA), thereby inhibiting target gene expression. Recently, it has interestingly been discovered that small RNA sequences targeting promoter regions can also be used to activate the expression of endogenous target genes through a mechanism called RNA activation (RNAa).
Discuss with erica what appropriate internet usage on the job look like
Explanation:
Download or upload obscene, offensive or illegal material.
Send confidential information to unauthorized recipients.
Invade another person’s privacy and sensitive information.
Download or upload movies, music and other copyrighted material and software.
Visit potentially dangerous websites that can compromise the safety of our network and computers.
Perform unauthorized or illegal actions, like hacking, fraud,
Rabies vaccines in dogs: a. Are always given yearly b. Can treat the disease c. Are legally required in the United States d. Are voluntary in all states
Answer:
The core vaccines include the DHLPP (distemper, hepatitis, leptospirosis, parvo, and parainfluenza).
Explanation:
Your pup will also need a rabies vaccination, which is usually around $15—20. (Some clinics include the cost of the rabies vaccination.) hope this helps you :)
Answer:
Are given yearly.
Explanation:
Looked it up :)
ASAP Neurons are an example of which type(s) of cell signaling? A. Short range messaging B. Short range and Direct contact C. Long range signaling D. Direct contact
C. Long-range signaling because their axons can send signals that can reach up to 3 feet
What type of evidence would indicate that the human hand, pigeon wing, and cat paw are homologous structures?
Answer:
embryological evidence or fossil evidence. give the answer choices if you can. they are vestigial structures.
Explanation:
the pancreas produced a special hormone, which stimulates the absorption of blood sugar. This hormone is called?
A adrenaline
B glycogen
C glucagon
D insulin
Answer:
The answer is option D.
Insulin
Hope this helps
Answer:
D. insulin
Explanation:
Insulin is the hormone produced by the pancreas and released when blood sugar is higher than normal. Glucagon is the opposite hormone, used when blood sugar is too low, and more must be freed from reserves of glycogen