Answer:Serratia genes for pigment production are induced at certain temperatures
Explanation:
The red pigment production is dependents on temperature.
Some bacteria are thermophile doing very well in extreme temperature while some are very sensitive to temperature changes.
The red pigment production is regulated by certain gene in the bacteria but can only be activated at certain temperature. 25°C was suitable for the red pigmentation that is why the plate color changed this indicate the sensitivity of the pigment production to temperature changes.
Conclusion - To get the best of serratia it is best to keep them at a temperature lower than the normal room temperature for the gene to be activated and full express itself.
the steps of self pollination. In your own words, describe what happens in each step. pls give me 5 step in order
Answer:
Steps are down below
Explanation
1. A small grain of pollen goes onto the stigma
2. Insects go into flowers and brush against the anther and is coated with pollen.
3. Pollen may fall onto the stigma of the next flower
4. Pollen falls onto the stigma of next flower
5. A small seed forms in the ovary of that plant
Question 5 of 10
A whale is able to move its fins in the ocean because of energy it obtains
directly from
O A. wind
O B. food
O C. the Sun
D. ocean currents
During genetic engineering, what is the function of a Ligase enzyme? A. To create a plasmid. B. To bond the target gene to the plasmid with covalent bonds . C. To create sticky ends to bond to gene to the plasmid. D. To cut the DNA at a Recognition site.
Answer:
C
Explanation:
In DNA cloning, restriction enzymes and DNA ligase are used to insert genes and other pieces of DNA into plasmids.
Genetic engineering is the field that uses technology and deals with genetic material. It uses the ligase enzyme that joins the sticky ends of genes to the plasmid. Thus, option B is correct.
What is ligase enzyme?Ligase is a protein enzyme that is involved in catalyzing the large fragments of the genetic material with the plasmids to make recombinant DNA. It establishes new chemical bonds.
In genetic engineering, the ligase enzyme links the gene of interest to the plasmid's restriction ends (sticky end). They allow the integrity of the genome by joining the phosphodiester backbone of the genetic material.
It joins the gene with the restriction ends of the plasmid by the concomitant hydrolysis (covalent bonds) process of chemicals from large molecules. It allows the formation of the complete genome that now can replicate.
Therefore, option B. ligase bonds the gene with plasmids.
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To celebrate her recent weight loss, Lisa’s friends decide to take her out for a healthy dinner. Lisa doesn’t drink alcohol because she knows the empty calories will contribute to weight gain. One girlfriend at the dinner has four margaritas and an extra shot of tequila before the food arrives. Is this friend’s behavior considered binge drinking?
Answer:
Yes
Explanation:
In the scenario being described in the question it can be said that Yes, the friend's behavior would be considered binge drinking. This is due to the fact that consuming four drinks or more for women is considered binge drinking, and she had 5. Binge Drinking is defined as when a pattern of drinking that brings a person's blood alcohol concentration (BAC) to 0.08 g/dl or above, which for men is 5 or more drinks, and for women it is 4 or more drinks in less than 2 hours.
A marine biologist discovers a new marine animal that has a coelom, but it does not develop from the mesodermal tissues. Under which category should she classify this animal? A. pseudocoelomate B. acoelomate C. coelomate
B. acoelomate
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Which best describes what happens if two waves meet and build on each other?
A. constructive interference
B. destructive interference
C. reflection
D. absorption
Answer:
constructive interference
Explanation:
when two waves build off of each other, they interfere with one another and construct. therefore, the answer is constructive interference.
When the path difference between subsequent crystal planes is equal to an integral number of electromagnetic radiation wavelengths, constructive interference occurs. Thus, option A is correct.
What is the constructive interference?Where the lines (which represent the peaks) cross over one another, constructive interference occurs. In other words, constructive interference occurs when two waves are in phase.
When two waves are entirely out of phase (a peak is located in the middle of two waves), destructive interference ensues.
Constructive interference is the phenomenon where the total amplitude of two waves is equal to the sum of the amplitudes of the separate waves when two waves are in phase and their maxima add.
Therefore, constructive interference best describes what happens if two waves meet and build on each other.
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Select all the correct answers.
Exotic pets, such as lizards and tarantulas, have increased in popularity. These animals are caught in the wild and sold as pets. What are two possible effects this action can have on biodiversity?
It will lead to greater biodiversity in these animals’ native environments.
Populations of these animals could decrease in the wild.
It could increase competition among predators of these organisms.
It increases the chances that wild organisms will find an unrelated mate.
Answer:
B and C
Explanation:
PLATO
;)
Populations of these animals could decrease in the wild and It could increase competition among predators of these organisms actions can have on biodiversity.
What do you mean by biodiversity?Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level.
Biodiversity is all the different kinds of life you'll find in one area—the variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural world.
Biodiversity is the natural world around us, and the variety of all of the different kinds of organisms - the plants, animals, insects and microorganisms that live on our planet.
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How could gene therapy be used to treat diseases caused by mutated genes?
A. It could deliver a corrected version of a gene to a person's cells.
B. It could infect a person with a virus that is more harmful than the
mutation
O C. It could change a few bases in a piece of mutated DNA in only one
cell.
D. It could change genes in an individual so that offspring cannot get
the disease.
Answer:
a
Explanation:
Predict what would happen if we had no system of lymphatic vessels, and tissue fluid was moved directly back into the circulatory system throughout the body.
Answer:
If there was no system of lymphatic vessels, there would be no drainage of excess fluid from the tissues and the lymphatic fluid would accumulate in the tissues, causing them to swell.
Explanation:
The lymphatic vessel is made up of tiny vessels that are closed at one end and can be found in the spaces in the cells, except the central nervous system and the non-vascular tissues.
The main function of the lymphatic vessel is to move lymph which is a fluid that contains infection-fighting white blood cells to every part of the body.
So, if there was no system of lymphatic vessels, and tissue fluid was moved directly back into the circulatory system throughout the body. the lymphatic fluid would accumulate in the tissues, causing them to swell.
please help with this
Answer:
the 4th one
Explanation:
How do the frequencies of the waves compare?
O Wave A has a lower frequency because it has a
smaller amplitude.
O Wave A has a higher frequency because it has a
shorter wavelength.
The waves have the same frequency because they
have the same wavelength.
O The waves have the same frequency because they
have the same amplitude.
Answer:
O. Wave A has a higher frequency because it has a shorter wavelength.
Explanation:
Wavelength refers to the distance between two crests while frequency refers to the number of waves passes through a specific point per second. Frequency and wavelength are inversely proportional to each other. Inversely proportional means if one increases, the other decreases and vice versa. If the frequency of the wave is higher so its wavelength becomes shorter and if the frequency of the wave is shorter so its wavelength is higher.
Answer: B.
Explanation: Wave A has a lower frequency because it has a longer wavelength.
What is a reproductive strategy?
a.) The way that a species creates offspring b.)The way that an organism hunts for food c.)The number of alleles an organism passes on d.) The DNA that is passed onto an offspring
Answer:
I am pretty sure that the answer is (a) The way that a species creates offspring.
Explanation:
The term reproductive strategy is loosely used to refer to the way an animal mates and/or raises offspring.
A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and to lie in the grooves between larger, underlying cells (i.e., spiral cleavage).
This embryo may potentially develop into a(n):___________.
A) turtle.
B) earthworm.
C) sea star.
D) fish.
E) sea urchin.
Learning goal 1: Plastics are:
:natural
:synthetic
Answer:
synthetic
Explanation:
Answer:
The answer is synthetic
Explanation:
Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why
Answer:
Though these genes are recessive, it is still very much possible for the offspring to inherit this, and the lethal gene is no different.
Explanation:
Suppose this animal breeder picked a dog who appeared to be happy and healthy and paired with another healthy dog. One of these healthy dogs may have this recessive lethal gene, though they have not been affected by it, their offspring may be likely to.
Is water biodegradable or non - biodegradable?
Answer:
Biodegradable
Explanation:
Why does mensuration occurs?
Explanation:
Mensuration is a natural process in which there is discharge of dead endometrial cells, unfertilized ovum, blood from broken capillaries and mucous membrane from uterus every month. As it is a natural process, it occurs every month to discharge the unwanted substances from our body. It makes our body free from the unwanted substances which can cause infection. It releases the unfertilized hormones prodoced in uterus of female.
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When the teacher was handing out this test, you noticed that your respiration rate and heartbeat increased, your palms got sweaty, and your hand shook a little. Your pretest behaviors were triggered by the __________ nervous system. Upon completion of the exam, your body returned to its normal state by way of the __________ nervous system.
Answer: sympathetic nervous system & parasympathetic nervous system
Write down name and action of enzymes in small intestine
Answer:
The names of the digestive enzymes are lipases, proteases and peptidases, and amylases.
Explanation:
The function of the lipases is to split fatty acids off of fats and oils. The function of the proteases and peptidases is to split proteins into small peptides and amino acids. The function of the amylases is to split carbohydrates, such as starch and sugars, into simple sugars, like glucose.
The ___________ hemisphere of the brain develops strengths in nonverbal areas such as comprehension of spatial relationships, recognition of patterns and drawings, music, and emotional expression.
Answer:
the right hemisphere
Explanation:
Which main type of sedimentary rock forms from dead plant and animal material?
Answer:
limestone, chert, dolostone, gypsum, halite (rock salt), diatomite, and chalk.
hope this helps!
Explanation:
Answer:
Letter C: Organic
Explanation:
Took the test and got it right :) Hope this helps!
What are molecular clocks used for
A- to cure hereditary disease
B- to classify
C- to locate fossils under water
D- to compare homologous structures
Answer:
D
Explanation:
Q. 35 One treatment for high blood pressure is taking diuretics that prevent the kidney collecting ducts from reabsorbing water. How would diuretics reduce blood pressure? By increasing blood volume By decreasing blood volume By increasing heart rate By decreasing heart rate
The diuretics will increase the volume of urine. That means more water is taken from the blood and excreted. According to Boyle's law, the volume is proportional to the pressure(p1v1=p2v2). It means that if we decrease the volume of blood we also decrease the pressure.
That means second option
Eosinophils function in Eosinophils function in production of heparin. production of surface antigens for red blood cells. blood coagulation. antibody production. destroying antibody-labeled antigens.
Answer:
Destroying antibody labeled antigens.
Explanation:
Eosinophils are type of cells of the immune system or white blood cells that help to fight against infections or diseases.
Eosinophils have several functions and these include: they help in
movement to inflamed areas, they trsp substances, killing cells or destroy cells anti-parasitic and bactericidal activity, participating in immediate allergic reactions, and modulating inflammatory responses.
Eosinophils destroy antibody labeled antigens so as to destroy or kill the antigens in order to fight against infections. Eosinophils are produced from the bonemarrow and are minutes in the body . The are released into the blood and later coagulate to function as defence mechanism.
What do all cellular activities in living organisms use as a source of energy?
ATP
lactic acid
pyruvic acid
glucose
A.) ATP
I took the test and this was the correct answer!
Answer:
A. ATP
Explanation:
If DNA replicated conservatively instead of semi conservatively, what would the banding pattern look like in a tube containing heavy nitrogen DNA (15N) grown in regular, or light, nitrogen (14N) for 1 generation? A. There would be one band of heavy DNA and one band of light DNA. B. There would be one band of intermediate DNA, and one band of light DNA. C. There would be one band of heavy DNA and one band on intermediate DNA. D. There would be one band of intermediate weight DNA.
Answer:
A. There would be one band of heavy DNA and one band of light DNA.
Explanation:
First, we must exclude that a 15N DNA is related to a heavy nitrogen, while a 14N DNA is related to a light nitrogen.
After that, it is important to understand what conservative DNA replication would be. This type of replication implies that the strands of the parental DNA would not be separated to form the daughter strands. Thus, the replication occurs with the DNA strands together, the daughter strands of newly formed DNA are also formed together, in this case. Thus, the parental 15N DNA would form another 15N DNA molecule, the same goes for the 14N molecule. With that we can say that the answer to your question would be "there would be a heavy DNA band and a light DNA band."
What three different genotypes are possible for an individual in this population
Answer:
With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa
Explanation:
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Which of the following organ systems are involved in the uptake and transport of materials required for life-sustaining processes? I. Digestive system II. Urinary system III. Nervous system IV. Circulatory system V. Reproductive system VI. Respiratory system
The following organ systems are involved in the uptake and transport of materials required for life-sustaining processes: the digestive system, circulatory system, and respiratory system, which are present in the I, IV, and VI.
What is the significance of the respiratory and digestive systems?Both of these systems are important for the body, as the digestive systems help in the digestion of the food so that the energy is taken from the food, and the main role of the digestive system is the breaking down of the food. The importance of the respiratory system is that it helps remove carbon dioxide from the body.
Hence, the following organ systems are involved in the uptake and transport of materials required for life-sustaining processes: the digestive system, circulatory system, and respiratory system, which are present in the I, IV, and VI.
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From watching his wife struggle to keep track of the family finances, Intuit founder Scott Cook identified the need for easy-to-use financial software that provided a single place for managing bills, bank accounts, and investments. This is an example of which innovator DNA trait
Answer:
It is observing
Explanation:
In observing innovator DNA trait, innovators or observers carefully and consistently search out for any little behavioral details in the activities of customers, suppliers, and other companies so that they will gain insights and knowledge about new ways of doing things.
From watching his wife struggle to keep track of the family finances, Intuit founder Scott Cook identified the need for easy-to-use financial software that provided a single place for managing bills, bank accounts, and investments is observing because he look out carefully for any little behavioral details in on how his wife handle business related financial activities in the home so that he will gain new insights on how to do things in a new way.
When does the separation of sister chromatids occur? A. Meiosis 1 B. Meiosis 2 C. Before Meiosis D. After Meiosis
Answer:
option B is correct that is meiosis 2
Explanation:
the two sister chromatids are separated from each other into two different cells during mitosis or during the second division of meiosis