Answer:
=60÷15
=4 oscillations
Answer:
[tex]\Huge \boxed{\mathrm{0.25 \ s}}[/tex]
Explanation:
[tex]\sf \displaystyle time \ period = \frac{time \ taken}{number \ of \ oscillations }[/tex]
[tex]\displaystyle \frac{15}{60 }=\frac{1}{4} =0.25[/tex]
Master genes that affect development tend to be highly ____; therefore, similarities in patterns of embryonic development reflect shared ancestry that can be evolutionarily ancient.
Answer:
Master genes tend to be conserved.
Explanation:
Master genes, which are the genes in the DNA that control major development processes such as the development of the skeleton, the organs etc and the production of the necessary proteins.
Since they take on such an important role, they don't really change much. Master genes that affect development tend to be highly conserved so embryonic development can show similar patterns.
I hope this answer helps.
You are examining the fossil record and notice that through time a series of fossils exhibits very little change. During the period of time you are studying, this fossil lineage can be described as exhibiting ______.
Answer: Equilibrium
Explanation: Fossil are regarded as decayed remains of plants and animals usually preserved in sedimentary rocks, coal, woods and so on. Records of organism as gathered and traced by the remains of preexisting remains of organisms through geologic time is called Fossil record. There are instances, whereby Fossil record of certain organisms are marked by very little or no changes with the organism's population exhibiting stability and portraying very little change as shown by its Fossil record. Such population of organism are said to exhibit equilibrium due to such stability and lack of wide change in record.
You are carefully examining a living organism. Which of the following should convince you that the organism is acoelomate? You are carefully examining a living organism. Which of the following should convince you that the organism is acoelomate? It has bilateral symmetry. It is triploblastic. Muscular activity of its digestive system distorts the outer body wall. It possesses sensory structures at its anterior end.
Answer:
Muscular activity of its digestive system distorts the outer body wall.
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Identify how scientists used the scientific method to test this phenomenon.
Answer:
Scientists used the scientific method of investigation to test this phenomenon. The scientific method consists of these steps:
Make observations: Scientists observed that nerve damage causes severe pain. Scientists knew bone marrow cells seemed to decrease nerve pain, but the reason was unknown.
Ask questions and construct the hypothesis: Would injecting bone marrow cells into the spinal cord decrease pain?
Test the hypothesis: Injected bone marrow cells into the spinal cord of mice that had nerve damage. Observed changes in the cells, and monitored the pain levels in the mice.
Analyze the results and make a conclusion: Determined that the pain decreased because the bone marrow cells released a pain-relieving protein that helps damaged cells.
Test and modify: Make a plan to repeat the test in humans.
Explanation:
What is the difference between an organic
compound and an inorganic compound?
Answer:
Explanation:
the difference between organic and inorganic compound is
1)organic com[pound contain carbon and inorganic do not contain carbon
2)not only carbon, hydrogen is also an essential component of organic compound and inorganic does not contain hydrogen and carbon
EXAMPLE OF ORGANIC COMPOUND
molecule associated with living organism are considered as organic all organic compound carbon and nearly all organic compound contain hydrogen and some also contain oxygen examples are :
DNA
sucrose
benzene
methane, ethane
EXAMPLE OF INORGANIC COMPOUND
inorganic contain salt,metals substances that are made from single element and any other compound that do not contain hydrogen bounded to carbon while some inorganic compound do in fact contain carbon but still they are inorganic
example of such compound which contain carbon but still they are inorganic are table salt,diamond ,carbon dioxide
few organic compound do not contain carbon hydrogen bond examples of such compound are carbon tetra chloride(CCL4) AND UREA
If someone steps on a sharp object with their right foot, it will lead to Multiple Choice a monosynaptic reflex causing contraction of the right hamstring and a polysynaptic reflex causing contraction of the left hamstring. polysynaptic reflexes involving contraction of the right hamstring and left quadriceps. polysynaptic reflexes involving contraction of the right quadriceps and left hamstrings. a monosynaptic reflex causing contraction of the right quadriceps and a polysynaptic reflex causing contraction of the the left hamstring.
Answer:
C
Explanation:
2. You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two- week period, the height is measured. Independent: Dependent: Constants: Control: 3. Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. Independent: Dependent: Constants: Control: 4. Pea plant clones are given different amounts of water for a three-week period. The first pea plant receives 400 milliliters a day. The second pea plant receives 200 milliliters a day. The third pea plant receives 100 milliliters a day. The fourth pea plant does not receive any extra water: the plant only receives natural ways of receiving water. The heights of the pea plants are recorded daily. Independent: Dependent: Constants: Control: 5. One tank of goldfish is fed the normal amount of food once a day. A second tank is fed twice a day. A third tank is fed four times a day during a six week study. The fish’s weight is recorded daily. Independent: Dependent: Constants: Control: 7. You decide to clean the bathroom. You notice that the show is covered in a strange green slime. You try to get rid of this slime by adding lemonade juice. You spray half of the shower with lemonade juice and spray the other half of the shower with water. After 3 days of spraying equal amounts 3 times a day, there is no change in the appearance of the green slime on either side of the shower. Independent: Dependent: Constants: Control: 8. You want to test which size of soccer ball is easiest to juggle with your feet. You test a size 3, size 4, and size 5 ball. You count the seconds the ball stays in the air for each of the trials. You allow yourself to use both of your feet, knees, and head to juggle the ball. Independent: Dependent: Constants: Control: 9. Come up with and describe your own experiment. Note the Independent, Dependent and Control Variables, and whether your data will be Quantitative or Qualitative. Experiment: Independent: Dependent: Constants: Control: The first person answer that question i give brainliest answer this is urgent!!!!!
what substance in least cells are responsible for Breaking Down sugar into carbon dioxide and ethyl alcohol
The spelling mistake is present in the question, so the right question is as follows:
what substance in yeast cells are responsible for Breaking Down sugar into carbon dioxide and ethyl alcohol?
Answer:
Zymase
Explanation:
Zymase is an enzyme that is responsible for breaking down sugar into carbon dioxide and ethyl alcohol in a yeast cell.
The whole process of formation of ethyl alcohol in the presence of yeast enzyme zymase is called fermentation. The process fermentation must occur in the absence of air because the zymase enzyme unable to perform its function in the presence of air.
Hence, the correct answer is "Zymase enzyme".
2. Does politics affect environmental decisions?
Which of the following questions would be an appropriate scientific question that could be tested by experimentation?
a. Which type of bread goes moldy the fastest?
b. Where do we go when we die?
c. Is it a sin to transplant plg hearts into humans?
d. Are llamas less valuable than camels?
Answer:
A.Which type of bread goes moldy the fastest?
Explanation:
You can moisture the bread , seal it in a zip lock bag and place it in the freezer for some days. The mold will eventually grow. Be sure not to touch it and use gloves. Molds can be allergic to some.
A recessive mutation causes short sightedness (ss) in cats. The frequency of homzygous wild type (+/+), heterozygous (+/s) and homzygous recessive (ss/ss) individuals was assessed in two populations of cats. The data is shown in the chart below. a. Are the two populations in Hardy-Weinberg equilibrium? Explain. b. If one population is not, what might cause this deviation?
Answer:
a. Only one of the two populations is in Hardy-Weinberg equilibrium
b. The Population of City cats is not in Hardy-Weinberg equilibrium because the proportion of dominant and recessive genes have been forced to change by outside force of migration, selection and mutation
Explanation:
By the Hardy-Weinberg Law, we have;
p² + 2·p·q + q² = 1
p + q = 1
p = Dominant allele frequency within the population
q = Recessive allele frequency within the population
p² = Percentage of individuals that are h o m o zygous dominant
q² = Percentage of individuals that are h o m o zygous recessive
2· p · q = Heterozygous individuals percentage
Therefore, for the country cats, we have;
p² = 0.49
p = √0.49 = 0.7
q² = 0.09
q = √0.09 = 0.3
2×p×q = 2×0.7×0.3 = 0.42 = The value given in the table
Which shows that the country cats are in Hardy-Weinberg equilibrium
For the city cats, we have;
p² = 0.52
p = √0.52 = √(13)/5
q² = 0.03
q = √0.03 = √3/10
2×p×q = 2×√(13)/5×√3/10 = √(39)/25 ≠ 0.45 which is the value given in the table
Which shows that the City cats is not in Hardy-Weinberg equilibrium
Therefore, only one of the two populations is in Hardy-Weinberg equilibrium
b. The Population of City cats is not in Hardy-Weinberg equilibrium because the proportion of dominant and recessive genes have been forced to change by outside force of migration, selection and mutation.
Following the Hardy-Weinberg theory, we can say that the country cats population is in equilibrium, while the City cats population is not. This is probably due to the action of evolutive forces.
Hardy-Weinberg equilibriumThe Hardy-Weinberg equilibrium theory states that the allelic frequencies in a locus are represented as p and q. Assuming a diallelic gene,
p is the frequency of the dominant allele, q is the frequency of the recessive allele.The genotypic frequencies after one generation are
p² (H0m0zyg0us dominant genotypic frequency), 2pq (Heter0zyg0us genotypic frequency), q² (H0m0zyg0us recessive genotypic frequency).If a population is in H-W equilibrium, it gets the same allelic and genotypic frequencies generation after generation.
The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
Solving the problemWe are given the genotypic frequencies of each population.
Now, we need to say if these populations are in H-W equilibrium, and if not, why?
So let us analyze each population separately.
Country CatsWe have the following genotypic frequencies, F(xx).
F(+/+) = p² = 0.49F(+/ss) = 2pq = 0.42F (ss/ss) = q² = 0.09Now, we need to get the allelic frequencies, p and q.
To do it, we will add half the heter0zyg0us frequency to each of the h0m0zyg0us frequencies.
p = 0.49 + (0.42/2) = 0.49 + 0.21 = 0.7p = 0.7 ⇒ Frequency of the dominant allele
q = 0.09 + (0.42/2) = 0.09 + 0.21 = 0.3q = 0.3 ⇒ Frequency of the recessive allele
Now, if this population is in H-W equilibrium, it will get the same allelic and genotypic frequencies generations after generation.
So now, we will get the genotypic frequencies (p², 2pq, and q²) of the following generation.
If p = 0.7 ⇒ p² = 0.7² = 0.49If q = 0.3 ⇒ q² = 0.3² = 0.092pq = 2 x 0.7 x 0.3 = 0.42The given genotypic frequencies in one generation are equal to the calculated genotypic frequencies in the next generation.
We can conclude this country's cats population is in Hardy-Weinberg equilibrium. No evolutive events are going on.
City Cats
We have the following genotypic frequencies, F(xx).
F(+/+) = p² = 0.52F(+/ss) = 2pq = 0.45F (ss/ss) = q² = 0.03Now, we need to get the allelic frequencies by adding half the heter0zyg0us frequency to each of the h0m0zyg0us frequencies.
p = 0.52 + (0.45/2) = 0.52 + 0.225 = 0.745p = 0.745 ⇒ Frequency of the dominant allele
q = 0.03 + (0.45/2) = 0.03 + 0.225 = 0.255q = 0.255 ⇒ Frequency of the recessive allele
Now, if this population is in H-W equilibrium, it will get the same allelic and genotypic frequencies generations after generation.
So now, we will get the genotypic frequencies (p², 2pq, and q²) of the following generation.
If p = 0.745 ⇒ p² = 0.745² = 0.555If q = 0.255 ⇒ q² = 0.255² = 0.0652pq = 2 x 0.745 x 0.255 = 0.379The given genotypic frequencies in one generation differ from the calculated genotypic frequencies in the next generation.
Generation 1 Generation 2
p² 0.52 0.555
2pq 0.45 0.379
q² 0.03 0.065
We can conclude that this city's cats population is not in Hardy-Weinberg equilibrium.
Probably some evolutive events are going on.
The evolutive forces affecting the H-W equilibrium are natural selection, genetic drift, and genetic flow. The mating system might also affect the equilibrium in this population.
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Which of the following processes is likely to occur in the leaves of a plant exposed to an atmospheric oxygen level of only 1% or 2%? a. hypoxia b. transpiration c. aerobic respiration d. anaerobic respiration
Answer:
A). Hypoxia.
Explanation:
Hypoxia is characterized as the condition in which tissues are deprived of an adequate supply of oxygen. As per this definition, hypoxia would be the process that is most likely to occur in the plant's leaves when it is revealed to a minimum level of 1 or 2% of oxygen. The lack of oxygen in such states reaches the tissues. One of the advanced stages of this process is 'anoxia; where there is a complete absence of 'oxygen' that enhances the ecological stress. Thus, option A is the correct answer.
Answer: aerobic respiration
Explanation: edg 2021
Which of the following shows natural selection? Select one: a. Pigs are bred to produce more meat. Mothers care for their young. b. Corn is planted every year. Large ears of corn are kept to plant the next crop. c. Sparrows tend to choose mates that eat similar sized seeds. Their offspring tend to also favor the same sized seeds as their parents.” d. A dog's parents were racers. The fastest dogs are bred to make the fastest puppies. PLZ HELP NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
d. A dog's parents were racers. The fastest dogs are bred to make the fastest puppies
Explanation:
What chemical feature of carbohydrates makes them a necessary food?
Answer:
see below
Explanation:
Carbohydrates contain a large amount of energy that can be released quickly inside the body. They are used as fuels to provide the energy for keeping the body alive.
name the one ozone depleting substances which is used as a coolant i the refrigerators and air- conditioning
Answer:
cloro Floro carbon(cfc)
Hope it helps u
mark as brainlist
Answer:
Chlorofluorocarbon (CFC)
Explanation:
Released when refrigerators are made, and even released when a refrigerator is cooling things stored in it.
Chlorofluorocarbon contains
ChlorineFluorine And CarbonWhen Chlorine and Oxygen( the oxygen found in the ozone) react together, the ozone or the shield that blankets the earth from dangerous rays such as the UV ray will be put in danger.
When emphysema is a result of a α1-Antitrypsin disorder, assessment data is likely to include which of the following?
a. Caucasian Client age younger than 50
b. Elevated levels of α1-Antitrypsin
c. No history of cigarette smoking
d. Enzyme levels that are below normal
Answer:
a. Caucasian Client age younger than 50
Explanation:
α-1 Antitrypsin: In biology, the term "α-1 Antitrypsin" is also referred as "A1AT" and is determined as a serpin that consists of a major "protective effects" against the cigarette smoking and involves the development of emphysema, along with that the patients with the mutations of the "A1AT gene" tends to display an increased risk of emphysema development. However, It is mostly developed in people who are younger in age ranging from 30 to 40 years.
Which US state featured in the map is most likely to lose its forests due to mining?
Answer:
California
Explanation:
I took this test on Plato
California US state featured in the map is most likely to lose its forests due to mining
What is mining ?
Mining shows negative and positive impact on the envrionment but negative impacts are higher than positive impact on the environment.
Mining activities such as mine discovery, exploration, construction, operation, maintenance, expansion, abandonment, decommissioning and conversion can have a variety of direct and indirect impacts on social and environmental systems.
Land-use changes can result from mine exploration, construction, operation, and maintenance, and these changes can have adverse effects on the environment.
For example, deforestation, erosion, contamination of nearby streams and wetlands, soil profile changes, noise, dust and increased emissions can occur.
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A female with an X-linked dominant disease mates with a normal male. Based on the pedigree chart, the possibility that her offspring will actually develop the disease is %.
Answer:
50%
Explanation:
A pedigree chart is a chart that defines the incident and the presence of a specific organism and its ancestor from generation one to the another generation like humans, racehorses, etc
Here in the given situation, it is mentioned that the a female which is with an X-linked associated with a normal male
So based on the above information, the possibilities should be 50%
Answer:
its 50%
Explanation:
got it right on test
A form of exercise that involves short, intense bursts of energy; anaerobic exercise can only be maintained for 1–2 minutes, slightly longer through specific anaerobic training. Anaerobic exercises are generally used to build muscle mass, increase muscular strength, speed and power, for example sprinting (running, cycling, swimming, etc), and bodybuilding.
A. Anaerobic Exercise
B. Aerobic Exercise
Answer:
A). Anaerobic Exercise.
Explanation:
Anaerobic Exercise is characterized as the exercise that aims to break down glucose without making use of oxygen. Such exercise involves short, quick, and intense bursts of energy with maximum efforts. This leads to the body needing immediate energy(except oxygen) to fuel itself that eventually leads to the break down of glucose. This exercise primarily aims to 'build the mass of the muscles or enhance the muscular strength, through short and intense workouts involving jumping, sprinting, running, cycling, etc. Therefore, option A is the correct answer.
Two trees growing close to each other both use light, water,
and the same nutrients in the soil. This relationship is best
defined as:
a. symbiosis
b. competition
c. interdependence
d. none of the above
Answer:
Competition
Explanation:
Took the quiz
If two trees are growing close to each other with both using light, water, and the same nutrients in the soil, the relationship is best defined as competition. the correct option would be B.
In other words, biological competition describes a form of relationship between two organisms in which both fight for the same resources that are available in limited supply.
in competition, both organisms either learn to coexist through resource partitioning or fight it to finish. Without resource partitioning, one of the organisms will have to die as a result of being outcompeted.
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Identify the parts of the male reproductive system on the diagram.
Answer:the penis which is the erctile tissue
The testes a part which has dual function
The epididimus which store the sperm
The prostate gland and others
Answer:
Penis
Epidermis
Fore skin
Explanation:
The nearest organ to which the heart supplies oxygenated blood is
Answer:
Myocardium
The Heart itself. The nearest organ is the blood supplied to the Myocardium (Heart muscle) by the Heart pumping oxygenated blood through the Coronary Arteries.
How might you model the relationship between a tomato plant and the hornworm caterpillar? Identify the components of the model including inputs and outputs
Answer:
Parasitism.
Explanation:
The relationship between a tomato plant and the hornworm caterpillar is parasitism because parasitism is a type of symbiotic relationship in which one organism get benefits and the other get harmed. We know that hornworm caterpillar feed on leaves and destroy the tomato crop. So it gets nutrients from tomato plant and the tomato plant is negatively affected. The input of this system is the vegetative part of tomato plant while the output is the conversion of hornworm caterpillar into a moth.
The desire to improve people's lives is a strong motivator for innovation in science , technology , and medicine . A good scientist need traits to fill the purpose of understanding the world and making . Fill the concept map with the correct terms .
A good scientist is:
Curious about the world and its mysteries, and must observe carefully.
A skiptic who demands evidence before accepting explanations.
Bias and willing to change if need be, and does not let hypothesis or personal point of view influence them,
Oppen-minded and thoughtful in proposing creative and designing experiments.
Pour water into a large metal bowl.Put the bowl in the freezer .Wait two hours and observe the bowl. Describe the formation of ice in the bowl in your observation area.
Answer:
Solid with air bubbles?
Explanation:
assuming that you are expected to but your bowl of water in the freezer flat or you decide to, It most likely is going to be a solid block of ice with a few air bubbles in it just like if you were to freeze water standing up it would have little to no air bubbles in it.
How does the shape of an enzyme affect the reaction
Answer:
The shape of the enzyme determines which chemical reaction it will speed up.May strain the bonds of the substrate or put chemical groups of the active site in the correct position to speed up the reaction.
outline one theraputic use of stem cells
Answer:
This promotes the repair response of diseased tissue using stem cells.
Explanation:
It also uses stems instead of donor organs.
I gave you two, hope it helps.
Which of the following best describes a population?
A. members of the same species living in the same
place at the same time
B. all the red birds in an area
C. all types of organisms living in the same place
D. all members of the same species
The following best describes a population - A. members of the same species living in the same place at the same time.
A population is a group of individual organisms of the same species in a given area. A population is defined as a group of individuals of the same species living and interbreeding within a given area.
Members of a population that depend on the same resources such as food or habitat are subject to similar environmental conditions and others.The population is the number of individual species of people or animals in a particular place at a particular time.An example of a population is over eight million people living in New York City.Thus, the following best describes a population - A. members of the same species living in the same place at the same time.
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11.The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again. independent and dependent variable
An increase in temperature will minimize the amount of dissolved oxygen in the water and increase the metabolic rate of the goldfish, thus causing the goldfish's respiration rate to increase (“Hot waters make it hard for fish to breathe.
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Answer:
respiration rate
Explanation:
Based on fossil evidence about how long ago did the first single-cella’s life from appear on earth
Answer:slat
Explanation:
Slat rat