C. When an electric current causes light to be produced is the photoelectric effect observed
What does the photoelectric effect show?Heinrich Rudolf Hertz, a German scientist, developed the photoelectric phenomenon in 1887. Hertz discovered that when ultraviolet light shines on two metal electrodes with a voltage put across them, the light alters the voltage at which sparking occurs. This discovery is related to his work on radio waves.
High atomic number (Z) materials and low photon energy are where the photoelectric effect is most prevalent. Even though the energy transfer occurs between the photon and an orbital electron, the interaction should be viewed as including the complete atom.
A metal experiences the photoelectric effect when exposed to light. The wave theory of light makes the following predictions: Electrons will be released in response to light of any frequency.
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8. Which is an abiotic factor of an ecosystem?
a) ferns
b) water
c) birds
d) fish
Fossvo
Answer:
It is Fossvo(fossils?)
Explanation:
if thats a choice
how many cells there would be after a fourth cell cycle?
A person without the allele for sickle cell anemia has children with a person who is a carrier for sickle cell anemia but doesn’t have the disease. What percentage of their children will have sickle cell anemia? What percentage of their children will be carriers for sickle cell anemia? Show your work with a Punnett square. Queen pls I need help ASAP
Sickle cell anemia is an inherited autosomal recessive disease, which means that only the homozygous recessive individuals have the disease, heterozygous individuals are carriers, and homozygous dominant individuals are normal.
Let "N" represent the normal gene, i.e. without the mutation, and "S" represent the gene with the sickle cell mutation.
The genes of the parent without the disease will be NN, and it will produce gametes with the normal allele "N"
The genes of the parent that carries the disease will be NS and will produce gametes with the normal allele "N" and the recessive allele "S"
For both parents, each allele will have a 0.50 probability, this is granted by the random segregation of genes during meiosis.
To construct the Punnet square, you have to write the gametes of one of the parents in the first row and the gametes of the second parent in the first column. Write the corresponding probabilities for each gamete in each cell:
Cross each column with each row to determine the gene combination of the offspring:
When you cross the first column with the first row, the resulting genotypes will be NN, to determine its probability you have to multiply the probability of the individual inheriting each allele:
[tex]P(N)\cdot P(N)=0.5\cdot0.5=0.25[/tex]Write the result in the Punnet square:
Repeat for all combinations:
-First-row + second-column, the genotypes for the offspring will be NN, and its associated probability is equal to the product of the probabilities of each allele:
[tex]P(N)\cdot P(N)=0.5\cdot0.5=0.25[/tex]-Second-row + first-column, the genotypes of the offspring will be NS, and the associated probability is equal to the product of the probabilities of inheriting each allele:
[tex]P(N)\cdot P(S)=0.5\cdot0.5=0.25[/tex]-Second-row + second-column, the genotypes of the offspring will be NS, and, as before, the probability associated will be:
[tex]P(N)\cdot P(S)=0.5\cdot0.5=0.25[/tex]Write the results in the Punnet square:
As you can see, the offspring will have two possible genotypes NN and NS, to determine the percentage for each you have to add the probabilities of the cells that show the same genotype:
[tex]P(NN)=0.25+0.25=0.50[/tex][tex]P(NS)=0.25+0.25=0.50[/tex]So, 50% of the children will be homozygous dominant (NN) and 50% of the children will be heterozygous (carriers).
As you can see, since there was only one parent that carried the allele S, there is no possibility that their children will carry the homozygous recessive genotype SS. The probability of their children having sickle cell anemia is 0%
How did the different environmental factors (WIND, HEAT, LIGHT) affect the transpiration rates of all plants?
These factors are the same climatic factors that can either promote or inhibit plant growth and development and, eventually, crop productivity.
in the case of WIND HEAT AND LIGHT, they all increase the transpiration rates of the plants
List and describe the substrates and products of TCA cycle
The TCA cycle's starting and stopping requirements include the acetyl group, oxaloacetic acid, coA, citric acid, and others.
What is the TCA cycle, and what makes up the TCA cycle?
Tricaboxylic acid (TCA), commonly known as Krebs cycle, requires acetyl coenzyme A and a particular quantity of water to begin.
An substantial amount of citric acid is produced during the initial reaction between water and acetyle coA.
A molecule of coA is released as a result of this process, which is catalysed by the enzyme citrate synthase.
The following stage is isomerization, in which a substrate is converted from citrate to isocitrate.
Following decarbocylation, alfa ketoglutaric acid is produced, and succinyl coA is then oxidised to OAA in TCA cycle.
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A man with cataracts and a lowered metabolic rate is likely in which stage of his life?
Question 9 options:
Late adulthood
Early adulthood
Adolescence
Middle adulthood
Answer:
Late adulthood
cataracts can be associated with aging and also diabetes
which of the following molecules did William Prout NOT say was in urea?
show the molecules so yeahh
I need to identify if the intracelular on the picture is the part bellow or on top of the membrane
Considering the glycocalyx is associated with the external side of the membrane, we can assume the extracellular space is at the top of the membrane, while the intracellular space is below it.
What is the cell membrane composition?
The cell membrane is composed of two lipidic bilayers, cholesterol, proteins, and glucans incrusted in between.
⇒ Lipids
· Phospholipids are amphipathic molecules.
· They have hydrophilic heads facing the exterior and the interior of the cells and hydrophobic tails that arrange against each other in the interlayer space.
· Lipids can easily change places with other lipids by lateral diffusion in the same layer.
· They can diffuse transversally to the other layer but not as easily as lateral diffusion.
· There are also other lipidic movements such as rotational diffusion that imply the rotation of the molecule.
⇒ Cholesterol
These molecules are incrusted in the membrane between the hydrophobic tails of lipids.
⇒ Proteins
Integral proteins are permanently associated with the membrane. They accomplish many different functions such as substances transport, cellular receptors, and cellular adhesion, among others.
→ Transmembrane proteins ⇒ span the entire membrane
→ Monotypic integral proteins ⇒ attached to only one of the lipidic layers
Integral proteins provide structure to the plasmatic membrane.
Periferic proteins are in the internal or external surface but not incrusted in the membrane.
⇒ Carbohydrates
Carbohydrates associate with lipids and proteins to compose glycolipids and glycoproteins. They are mostly located in the external lipidic monolayer, facing the cell exterior.
When talking about glycocalyx we are referring to the whole group of carbohydrates located on the external side of the membrane.
Carbohydrates have two main functions,
cell recognition and binding spotstructural and physical barrierAccording to this information, we can assume that the extracellular space is located on tue top of the membrane, while the intracellular space is bellow the membrane.
Many more glycolipids and glycoproteins (glycocalyx) located in the superior bilayer suggests that the extracellular space is on the top.
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Which statement gives an advantage for a single-celled organism?
According to social-cognitive theory, if a woman sees that her friend improved her job performance by taking classes at a local college, she’s likely to try to take some classes to elevate her job skills too. What is this behavior called?
Question 11 options:
Learned cognition
Observational learning
Cognitive dissonance
Personal variables
According to the research, the correct option is Observational learning. According to social-cognitive theory, the woman's behavior is called observational learning.
What is observational learning?It is an indirect learning process in the social-cognitive theory that involves the social transmission of behavior by observing the behavior of others.
In this sense, it involves the acquisition, by the observer, of new responses and skills incorporating new patterns of behavior or skills, as well as the rules to develop new behaviors.
Therefore, we can conclude that observational learning describes the woman's behavior since by imitating her she learns a pattern that helps to elevate her job skills.
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Which of the following areas of the brain is refered to as our "emotional/motivational" brain?Select one:a.limbic systemb.sympathetic systemc.somatic sensory association aread.basal nucleie.parasympathetic system
The correct answer is the limbic system (a).
where can I identify the benefits associated using the various forms of energy?
Solar energy is an apparent infinite source of energy, which alleviates the pressures associated with raw materials searching. Given said that, solar energy could be conceived as the more parsimonious source of energy, as it is the motor of biological systems that gave rise to life as we know (that is, photosynthetic organisms). So, to sum up, it is "infinite", cheap, and easy to exploit (at least in tropical latitudes).
Complete the sentence unlike mitosis, meiosis results in the formation of (two or four) genetically (identical or different ) cells .
The result of meiosis is:
1. Four genetically different cells
2. Each nucleus is haploid and has a unique set of chromosomes.
3. Differences between haploid nuclei result from crossing over during prophase I and random segregation of homologous chromosomes during anaphase I.
We can conclude that the correct answer is:
Answer:unlike mitosis, meiosis results in the formation of four genetically different cells.
Phenylketonuria (PKU) is a recessive inherited disease caused by a mutation in the PAH gene. PKU causes a high amount of the essential amino acid phenylalanine to build up in the body, which can cause neurological and other problems.What is most likely true about the PAH gene? A. It codes for a functioning protein in individuals with PKU. B. It codes for a protein needed to break down phenylalanine. C. It codes for a non-functioning protein in individuals without PKU. D. It codes for the production of the amino acid phenylalanine.
Given the information about PKU and the PAH, we can evaluate the options:
A is false because it says the protein is functional in individuals with the disease.
B is more likely to be true because when the protein produced by PAH isn't functional, the phenylalanine builds up.
C is false because it says the protein isn't functional in healthy individuals.
D is false because phenylalanine is an essential amino acid, which means the body can't produce it.
Some plant tissue is exposed to a concentrated solution, which causes the plant cells to lose water. As a result, the plant wilted.
State the scientific term used to describe the appearance of cells within the wilted plant tissue.
Your answer
Plasmolysis is the loss of water by plant cells after being placed in a solution with a higher concentration of solute than the cells. This is called a hypertonic solution. Osmosis causes water to flow from the cell into the surrounding liquid.
Plasmolysis is the process by which cells lose water in hypertonic solutions. When cells are in a hypotonic solution the reverse process cytolysis or cell lysis occurs resulting in a decrease in external osmotic pressure and a net flow of water into the cell. When plants are not watered the extracellular fluid becomes isotonic or hypertonic causing water to leave the plant cells.
This causes a loss of turgor pressure. You will probably notice it as a wilt. In more concentrated solutions cell contents lose water by osmosis. They contract and move away from the cell wall. Cells are limp It is cytolyzed. When a high concentration of salt is placed on the outside of the cell membrane water leaves and binds with the cell. As water is lost by this movement, the plant cells shrink and die. Because of this, salt can kill plants. It leaches water out of the cells.
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Which type of financial aid will not be identified in the Free Application for
Federal Student Aid (FAFSA)?
A. Pell Grants
B. Private scholarships
OC. PLUS loans
OD. Work-study programs
You are conducting an experiment and create a stock solution. You then add 1 ml of the stock solution to 99 ml of water. What is the dilution of this sample? X = times more dilute)
A. 0.1x
B. 10x
C. 100x
D. 1000x
The dilution of 1 mL stock in 99 mL of water is a 100-fold dilution. Option C.
What is a 100-fold dilution?A 100-fold dilution is a dilution involving 1 part of the stock solution and 99 parts of diluting solvent.
A stock solution is a standard solution from which solutions of lower concentrations can be prepared by dilution.
Thus, when you take 1 mL of a stock solution and dilute it with 99 mL of water, you are carrying out a 100-fold dilution with water being the solvent used in dilution.
A 100-fold dilution is different from a 1000-fold. The latter requires 1 part of the stock solution in 999 parts of diluting solvent.
For 10-fold dilution, 1 part of the stock is taken and diluted with 99 parts of the diluting solvent.
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What is a possible reason for abnormally low heart rates?
Bradycardia is a gradual than the normal heart rate. Having bradycardia means that the heart beats lesser than 60 times in one minute. It can be caused by several medical conditions such as heart tissue damage due to aging, congenital heart defect, myocardia, hypothyroidism, and damage to heart tissue due to heart attack.
Answer - Option 2 - underlying medical condition.
Before reaching the eardrum, sound waves must pass which parts of the ear?
Question 13 options:
Pinna and stirrup
Anvil and stirrup
Auditory canal and Eustachian tube
Pinna and auditory canal
Before reaching the eardrum, sound waves travel to Pinna and the auditory canal.
Longitudinal waves square measure what conjures sound. Compressions and rarefactions also are a gift in longitudinal waves after they undergo any given medium.
Sound waves enter the external organ and undergo the meatus, a tiny low tunnel that connects to the membrane.
When sound waves enter the ear, the membrane vibrates, causing these vibrations to 3 little bones within the cavum. The auditory ossicle, incus, and stirrup square measure the names of those 3 bones.
Hence, the correct answer is (d) Pinna and auditory canal.
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SpaceX founder and CEO Elon Musk is among many companies and of countries who is planning to establish a civilization on planet Mars, if given the chance to be part of the mission to be the first human on Mars will you consider spending the rest of your life in the planet? If yes, what will be your plans to establish a civilization on the planet? If no, what are your reasons to stay? Write your reflection in 3-4 sentences.
Answer:
No because life on mars would be very difficult as the gravity on mars is only one-third of on earth, it will cause cardiovascular diseases and bone loss so you will have to exercise a lot.
Explanation:
7. A niche is
a) a small population of organisms
b) a place in which organisms live
c) a large collection of ecosystems
d) the role an organism plays in an ecosystem
Answer:
its d!
Explanation:
good luck! :)
Does anyone know this my kid is asking for help and it's been a while
Answer: Neither solid nor spotted fur would be possible
Explanation: This is because only the dominate striped fur gene is available in the gene pool (both animals have 2 dominant fur genes) therefore there is no where for a recessive gene to come from.
The image below shows plant cells. What feature of cells is best demonstrated in the image? A. Cells are formed from other cells within the same tissue. 1412 OB. All organisms are made up of a large number of cells. OC.. All organisms have cells with different shapes and functions. O D. Cells are the basic units of structure and make up tissues.
The feature of cells best demonstrated by the image is that all organisms have cells with different shapes and functions. Thus, option C is the correct answer.
According to the cell theory, a cell is the structural and functional core of every creature. All cells are derived from pre-existing cells that are already there. Schleiden and Schwann introduced the concept of the cell.
A great number of cells make up creatures, as demonstrated by the image in the question. Therefore, the organisms with a large number of cells are known as multicellular organisms. A living thing is made up of several sorts of cells. Also, the cells found in such organisms are of different shapes and sizes and have different functions. Cell along with other cells make up a tissue.
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When leaves turn color in the Autumn, this is a sign of a______change.
A. Chemical
B. It depends, no answer
C. Both A and B
D. Physical
When leaves turn color in Autumn, this is a sign of a chemical change.
What is a chemical change?A chemical change occurs when one chemical substance is changed into one or more distinct chemicals, like when iron is changed into rust.A chemical change occurs when one material transforms into another, new materials with distinct properties are created, and one or more new substances are created.When two substances combine to create a new substance, it happens as a result.Chemical changes are what cause changes like the fall leaf color change. Chemical processes are involved.When chlorophyll degrades, the green color of the leaves vanishes and is replaced by hues of yellow to orange that contributes to the beauty of the fall season. When other chemical processes take place simultaneously, red anthocyanin pigments develop and create new colors.To learn more about chemical change, refer
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James measured the humidity of the air in his back yard each morning for four days. His data is recorded below.
Day Humidity
1.
52%
II.
46%
75%
98%
On which day did it most likely rain?
OA. Day I
OB. Day II
OC. Day III
OD. Day IV
III.
IV.
According to the given data It most likely rain on Day 4 98%.
The correct option is D.
Briefing:The relative humidity is typically between 90 and 99 percent when it is raining, but it is rarely greater than 100 percent. Rain happens when water droplets get too large to be maintained in the atmosphere and fall to the ground. Clouds are created when invisible water vapor gas condenses to visible water droplets.
Why is humidity more on rainy days?The water vapour content controls the amount of rainfall during extremely strong downpours, in which all of the water in the atmosphere is frequently soaked out. We are more likely to experience rain when the humidity is higher because water vapor expands at a faster rate.
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The complete question is -
James measured the humidity of the air in his back
yard each morning for four days. His data is
recorded below.
Daily Humidity Chart:
Day 1 52%
Day 2 46%
Day 3 75%
Day 4 98%
On which day did it most likely rain?
A. 1
B. 2
C. 3
D. 4
While vertical farming may be an urban substitute for spacious farmlands, there is no guarantee that it will be a reliable substitute for regular farms.
Responses:
True
False
Vertical agriculture is not a reliable urban substitute, as it lacks many resources to implement, which makes implementation difficult in poorer countries.
is trueWhat is a vertical vegetable garden?The vertical garden is an agriculture concept for growing plants inside buildings or multi-story skyscrapers, often called farmscrapers, a term derived from the English skyscraper. In these buildings, which would function as large greenhouses, agriculture involves the use of technologies such as hydroponics to aid in plant growth. Some projects include the practice of livestock (especially poultry) on the lower floors.
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While vertical farming may be an urban substitute for expansive farmlands, there is no guarantee that it will be a dependable substitute for traditional farms. This is true.
What is vertical farming?Vertical farming is the method of growing crops in vertically stacked layers in a controlled environment. Vertical farming is utilized in urban places where there is limited space for crops to grow.
However, we cannot consider vertical farming to be a reliable substitute for traditional farms due to the high maintenance level and cost of vertical farming. It will be challenging to implement hydroponics and other plant-growth techniques on conventional farms.
As a result, vertical farming cannot be used in place of traditional farming.
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Does a bee have live birth 
Answer:
Yes
Explanation:
All insects do and ants do as well it shows when the baby ants go into their caves
why do chemicals from the endocrine system not cause every tissue to function as they pass them on thei journey through the body?
please help me T-T
Answer: Chemical messengers from the endocrine system (hormones) will only bind to specific receptors on target cells. If the cell does not have the receptor for said messenger, the messenger will not bind and the cell will not change in function.
Explanation:
When researching a question using the scientific method, what is the next step after testing your hypothesis?
Question 2 options:
Draw conclusions.
Analyze the results.
Propose ways to duplicate your research.
Pose a question.
The next step after testing hypothesis :-
1. Pose a question.
2. Propose ways to duplicate your research.
3. Analyze the results.
4. Draw conclusions.
The next step in the scientific method is to test the hypothesis via designing an experiment. This consists of growing a listing of substances and a process a step-with the aid of-step rationalization of the way to conduct the experiment.
Hypothesis is a testable declaration approximately the relationship between or extra variables or a proposed reason for some observed phenomenon.
A hypothesis states your predictions approximately what your studies will find. It's far a tentative answer to your research query that has not but been examined. For a few research initiatives, you may must write several hypotheses that deal with distinct elements of your research question.
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Match the letters with the numbersLETTERSa. RNAb. ribosec. tRNAd. protein synthesise. transcriptionf. central dogma of molecular biologyg. rRNAh. mRNANUMBERS1. DNA -> RNA -> protein2. carries genetic code from the nucleus to the cytoplasm3. the process of building a protein from the genetic code4. sugar ir rRNA5. single stranded nucleic acid6. creates the structure of a ribosome7. brings amino acids to the ribosomes
a. RNA is a single stranded nucleic acid (number 5)
b. ribose is the sugar in RNA molecules (number 4)
c. tRNA brings amino acids to the ribosomes (number 7)
d. protein synthesis is a conceot related to the process of building a protein from the genetic. code (number 3)
e. transcription is the process of making an RNA copy, but it is not listed on the numbers category.
f. the central dogma of molecular biology states that the instructions for making a protein are contained in the DNA molecule, which are copied by RNA (DNA -> RNA -> protein) (number 1)
g. rRNA bounds itself to ribosomal proteins to create the structure of a ribosome (number 6)
h. mRNA carries genetic code from the nucleus to the cytoplasm (number 2)