Where is the free fall acceleration of an object under Earth's gravity directed?
Answers
Answer:
In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.
Explanation:
A free-falling object has an acceleration of 9.8 m/s/s, downward (on Earth). This numerical value for the acceleration of a free-falling object is such an important value that it is given a special name.
Related Questions
Please tell us two things that PAL does to develop human
resources.
Answers
The Program for Alternative Learning (PAL) develops human resources through vocational training and skills development programs.
PAL offers vocational training programs that equip individuals with practical skills and knowledge in various fields, enabling them to pursue employment opportunities and contribute to the workforce. Additionally, PAL provides opportunities for personal and professional growth through workshops, seminars, and mentoring, fostering the development of essential skills and qualities required in the job market.
PAL's focus on vocational training and skills development programs demonstrates its commitment to nurturing and enhancing human resources. By equipping individuals with valuable skills and providing them with opportunities for personal and professional growth, PAL plays a vital role in empowering individuals, enhancing employability, and contributing to the development of human resources in the community.
To know more about The Program for Alternative Learning click here:
https://brainly.com/question/31261482
#SPJ11
WHAT IS OUR NATURAL SATELLITE ???
Answers
Answer:
the moon is our natural satellite.
which serological test is capable of detecting specific antibodies in the serum of a patient by adding the patient serum to the wells of a commercially produced plate coated with antigen molecules?
Answers
The serological test which is capable detecting specific antibodies in the serum of a patient is enzyme-linked immunosorbent assay.
What is serological test?
To determine a previous viral infection and the body's immune reaction to it, an antibody or serology test is performed. It tests antibodies, which are immune system-produced blood proteins that fight viruses and other infections. Antibody testing could be useful in preventing the same infection in the future.
Serological tests can identify antibodies in a patient's serum, which may be a sign that a particular disease has been successfully vaccinated against.
The enzyme-linked immunosorbent assay is a serological test that can identify particular antibodies in a patient's serum by putting the patient's serum into wells on a commercially available plate that has been coated with antigen molecules.
To know more about serological test, go to link
https://brainly.com/question/17577861
#SPJ4
Which limiting factor is being displayed when a fox chases after a pika
Answers
In what condition do deposits of collagen cause the skin and organs to harden?
Answers
The condition in which deposits of collagen cause the skin and organs to harden is called scleroderma.
Scleroderma is an autoimmune disease characterized by the overproduction and accumulation of collagen in the body's tissues, leading to the hardening of the skin and organs. This occurs due to the body's immune system mistakenly attacking its own healthy tissues, resulting in inflammation and the excessive production of collagen. The exact cause of scleroderma is still unknown, but it is believed to involve a combination of genetic and environmental factors.
The disease can manifest in different forms and severity, ranging from localized to systemic scleroderma, which affects not only the skin but also internal organs such as the lungs, kidneys, and heart.
To know more about collagen, visit here :
brainly.com/question/30161175
#SPJ11
When you hold the frequency on the stimulator constant at 1 pulse per second, what is the frequency of ap you generate in the sciatic nerve? (how many aps are generate in neurons found in sciatic?)
a. 10/s
b. 1/s
c. 100/s
Answers
Although electrically evoked muscle activation (EEMA) differs in several ways from voluntary muscle contractions, neuromuscular electrical stimulation (NMES) is frequently employed in rehabilitation.
These variations make it difficult to employ NMES to restore muscular function. In order to achieve more organic activation patterns, we looked into the use of low-current, high-frequency nerve stimulation to activate the muscle through the spinal motoneuron (MN) pool. The H-reflex responses to individual stimuli in a train of stimulation pulses at 100 Hz were accurately assessed with surface EMG during low-level contractions using a novel stimulation procedure. Furthermore, intramuscular EMG was used to examine the recruitment of a single motor unit by afferent stimulation. The findings demonstrated that, compared to a lower stimulation frequency, 100-Hz stimulation produced noticeably higher H-reflex responses.
To learn more about stimulator constant, refer:
https://brainly.com/question/14758156
#SPJ4
According to Darwin, natural selection is a process by which?
Answers
Answer:
According to Darwin natural selection is a process by which living organisms adapt and change to survive in nature and it's limited resources.
Biology 1
Please help >~
Answers
Answer:
C :D
Explanation:
Answer:
d
Explanation:
i hope this helps
The kidneys are located in the _____.Select one:a. retroperitoneal spaceb. retropelvic spacec. abdominal cavityd. pelvic cavity
Answers
The kidneys are located in the Retroperitoneal space The retroperitoneal space is home to several organs, including the kidneys, adrenal glands, a portion of the duodenum, the pancreas, and parts of the large intestine
The kidneys are positioned in the retroperitoneal space, which is located behind the peritoneum. The retroperitoneal space is situated outside the abdominal cavity. It is bounded by the posterior abdominal wall and is positioned between the parietal peritoneum and the muscles and structures of the back. The retroperitoneal space is home to several organs, including the kidneys, adrenal glands, a portion of the duodenum, the pancreas, and parts of the large intestine. The kidneys are specifically situated on either side of the vertebral column, partially protected by the ribs and surrounded by connective tissue and fat that help support and cushion them.
Learn more about retroperitoneal here
https://brainly.com/question/31823768
#SPJ11
which of the following hormones are involved in strengthening memory formation of traumatic events? group of answer choices melatonin adrenalin cortisol sertotonin
Answers
The following hormones are involved in strengthening memory formation of traumatic events is C. Cortisol
The Cortisol hormone is commonly referred to as the stress hormone, and it is released in response to various types of stress. The hormone is created by the adrenal gland, which is located just above the kidneys, and it helps to regulate several vital bodily functions. Cortisol hormone helps to strengthen the formation of traumatic memory by acting on the hippocampus region of the brain. The hormone binds to the receptors in the hippocampus region, and it works to facilitate the consolidation of long-term memories that are associated with trauma.
Cortisol is involved in strengthening memory formation of traumatic events. When cortisol is released in the brain, it binds to the receptors in the hippocampus, which is the region of the brain that is responsible for the formation of new memories. This hormone is associated with increasing blood sugar levels, immune responses, and it acts as an anti-inflammatory agent. Therefore, the correct answer is C.Cortisol hormone is an important part of the brain's memory formation process.
Learn more about cortisol at
https://brainly.com/question/30730834
#SPJ11
Identify two distinguishing factors of a nearby ecosystem, and name five kinds of organisms that live in that ecosystem.
Answers
primates are characterized by group of answer choices docility, toolmaking, and parental investment. arboreal adaptation, dietary plasticity, and male dominance. forward-facing eyes, varied diet, and nonviolent behavior. arboreal adaptation, dietary plasticity, and parental investment.
Answers
According to the utilized concept, parental investment, nutritional adaptability, and arboreal adaption are characteristics of primates.
What adaptations do arboreal species have?Sticky pads, flexible ankle joints (like a squirrel's), and claws are all adaptations that help a creature stay in position. The hairless fingertips of arboreal primates allow them to crush a branch between their fingertips and create friction.
Dietary plasticity: What is it?Dietary plasticity has little effect on brown bear (Ursus arctos) body composition or den behavior in a nutrient-rich environment.
Parental investment: what is it?Parental investment is any effort made by a parent to improve the fitness of their child at the price of using those resources to improve the parent's own.
To know more about primates, visit-https://brainly.com/question/13387536
#SPJ4
PLEASE HELP ME WITH THESE QUESTIONS!!!!!
From the movie Outbreak.
1. What are two forms of virus that can be studied accurately using a light microscope?
2. What are two types of science equipment that are used to study Ebola?
3. What are two problems scientists face when trying to create vaccines for a virus?
Answers
The answers include the following:
The two forms of virus that can be studied accurately using a light microscope is ebolavirus and Motaba virus.The two types of science equipment that are used to study Ebola are Polymerase chain reaction (PCR) and microscope.The two problems scientists face when trying to create vaccines for a virus is their production in sufficient doses and ethical issues.What is a Vaccine?This is referred to as a substance which is prepared biologically and helps to protect the body against diseases. This is done by stimulating the body's immune response when faced with it.
Production of vaccines however have some challenges which includes its production in sufficient quantities so as to cater for those in need of it and also ethical issues.
Read more about Vaccines here https://brainly.com/question/625596
#SPJ1
How could you test whether the regenerated photoreceptors are functional? Do you think photoreceptors are functional before, as soon as, or sometime after they become visible? Why?
Answers
Large volumes of densely packed membrane, which contain the photopigment rhodopsin or a similar molecule, serve as a defining characteristic of these organisms. A high photopigment density, which enables a significant number of light photons to be absorbed upon reaching the photoreceptor, is required to achieve the tight packing.
The length of time it takes for the photoreceptors to develop will be used to gauge the degree of regeneration. The pale circular eye's interior contains black specks that are photoreceptors (see the photograph on the right). The eyes and photoreceptors in the planaria sample begin to develop around day four and day six, respectively. This animal would receive a six-day regeneration score. Record the numbers and any additional observations on the data sheet or in your notebook each day after determining how many tail pieces in each dish have grown new photoreceptors.
Learn more about photoreceptor here:
https://brainly.com/question/28598041
#SPJ4
What would happen to the concentrations of Pyruvate, NADH and intermembrane H+ if the Krebs Cycle stopped working?
Answers
Answer:
Pyruvate will increase
NADH will decrease
H+ will decrease
Explanation:
I just took the test
If the Krebs Cycle stopped working, the Pyruvate will increase NADH and intermembrane H+ would decrease
In the Krebs Cycle, pyruvate is used to make a molecule called NADH and also makes ATP. Pyruvate would increase and no NADH would be made by the Krebs Cycle so it would reduce. Without NADH, the ETC would not get electrons. No electrons would pass down the chain, so no H+ would be moved. The concentration of H+ reduc because ATP synthase would still use themConclusively, If the Krebs Cycle stopped working, the Pyruvate will increase, NADH and intermembrane H+ would decrease.
Learn more from:
https://brainly.com/question/11676205
how to make a plant cell model using recycled materials
Answers
The following is a step-by-step guide to making a plant cell model using recycled materials.
Materials required: Large Styrofoam ball , Recycled plastic container , Recycled cardboard,Green and brown paint,Glue, Scissors, Marker
Making a plant cell model is a fun and easy way to learn more about the different parts of a plant cell. The materials that are required are readily available in any household.
The following is a step-by-step guide to making a plant cell model using recycled materials.
Materials required:
- Large Styrofoam ball
- Recycled plastic container
- Recycled cardboard
- Green and brown paint
- Glue
- Scissors
- Marker
Instructions:
1. Start by painting the Styrofoam ball with green paint to create the cell membrane of the plant cell.
2. Allow the paint to dry completely before continuing.
3. Cut the recycled plastic container into small pieces and paint them brown. These will represent the cell wall of the plant cell.
4. Glue the brown pieces around the outside of the Styrofoam ball to create the cell wall.
5. Cut out different shapes from recycled cardboard to create the different organelles of the plant cell.
6. Paint the organelles different colors. For example, the nucleus could be painted blue, the mitochondria could be painted red, and the chloroplasts could be painted green.
7. Once the paint has dried, glue the different organelles onto the inside of the cell membrane.
8. Use a marker to label the different organelles to help identify them.
By following these steps, you can create a plant cell model using recycled materials. This project is a great way to learn more about the different parts of a plant cell and how they function.
To know more about model visit;
brainly.com/question/32196451
#SPJ11
Explain why it's advantageous to have several different organ systems instead of one large system to handle all of the human body's functions.
Answers
Answer:
to avoid a general collapse of the system (eventually caused by the failure of the local organs)
Explanation:
An organ system can be defined as a group of organs that work together as a unit in order to perform a particular function. In an organ system, each organ has specific functions and is composed of different tissues that in turn have specialized tasks. Organ systems include, among others, the cardiovascular system, respiratory system, digestive system, urinary system, skeletal system, endocrine system, nervous system, etc.
Inferences that people draw about the causes of events, their own behavior, and others’ behavior are called
a. snap judgments.
b. self-fulfilling prophecies.
c. attributions.
d. attitudes.
Answers
The inferences that people draw about the causes of events, their own behaviour, and others' behaviour are called attributions.
Attribution is the process by which individuals explain the causes of behaviour and events. It involves making inferences about the underlying causes of behaviour based on limited information.
These inferences can have important implications for how individuals perceive and respond to others. The manner with which people connect depends on attributes.
To learn more about Inference people for events and behaviour visit https://brainly.com/question/15172333
#SPJ11
Inferences that people draw about the causes of events, their own behavior, and others' behavior are called
c. attributions.
To learn more about Inferences. Click the link below:
https://brainly.com/question/29739391
#SPJ11
Which category of macromolecules provides the energy used directly in cells? (1 point)
A. lipids
B. proteins
C. carbohydrates
D. nucleic acids
_______________________________________________________
How is energy stored in ATP?(1 point)
A. ADP loses its extra energy to ATP with the help of glucose.
B. ADP is given a third phosphate group, which stores energy in the bond.
C. ADP loses one phosphate group, leaving it with more energy.
D. ADP is given energy from glucose until it has enough energy to become ATP.
_______________________________________________________
Distinguish between the lytic and lysogenic cycles of viruses.(1 point)
A. The lytic cycle involves the merging together of the viral and host genomes.
B. The lysogenic cycle involves newly replicated virus bursting from the cell.
C. The viral genome is only injected into the cell during the lytic cycle.
D. The viral genome incorporates into the host genome during the lysogenic cycle.
Answers
1. Carbohydrates category of macromolecules provides the energy used directly in cells.
2. ADP is given a third phosphate group, which stores energy in the bond is energy stored in ATP.
3. The viral genome integrates into the host genome during the lysogenic cycle, which is the primary distinction between the lytic and lysogenic cycles (option - D) is correct answer.
How do the viral lytic and lysogenic cycles differ from one another?Viral reproduction happens during the lytic cycle, when a host cell is used to create new viruses, which then burst from the cell. The viral genome is incorporated into the host cell genome during the lysogenic cycle, which causes internal infection of the host cell.
To know more about lysogenic cycles visit:
https://brainly.com/question/28979159
#SPJ1
14. Which of the following is an example of
competition between species?
a. two species of insects feeding on the same
rare plant
b. a bobcat hunting a mouse
c. a lichen, which is an alga, and a fungus
living as a single organism
d. a tick living on a dog
Answers
Answer: d
Explanation:
what typically has to happen before a fruit develops? i) flowering ii) pollination iii) double fertilization
Answers
Before a fruit develops, two key processes need to occur: flowering and pollination.
Flowering: The first step is the production of flowers by the plant. Flowers are the reproductive structures of angiosperms (flowering plants). They contain male reproductive organs called stamens, which produce pollen, and female reproductive organs called pistils, which contain the ovary. Pollination: Pollination is the transfer of pollen from the male reproductive organs (anthers) to the female reproductive organs (stigma) of a flower. This can happen through various means, including wind, water, insects, birds, or other animals. Pollination is necessary for the fertilization of the ovules in the ovary.
learn more about fruit develops here:
https://brainly.com/question/1675066
#SPJ11
Which of the following is not an advantage of the exoskeleton in arthropods and mollusca? A. The stiff exoskeleton provides support against gravity on land. B. A stiff body covering provides an effective structure for muscle attachment. C. The cuticle of the exoskeleton is strong but flexible, allowing the body to expand as the body grows. D. The hard covering provides protection
Answers
Answer:
c.
Explanation:
the question is there
"The cuticle of the exoskeleton is strong but flexible, allowing the body to expand as the body grows" - is not an advantage of the exoskeleton in arthropods and mollusca. The correct option is C.
An exoskeleton is a hard external covering that protects the body of an animal. It is found in arthropods (such as insects and crustaceans) and molluscs (such as snails and clams).
The exoskeleton has several advantages, including providing support against gravity on land (option A), providing an effective structure for muscle attachment (option B), and providing protection (option D).
However, one disadvantage of the exoskeleton is that it does not allow the body to expand as the animal grows. Instead, the animal must periodically shed its exoskeleton and grow a new one, a process known as molting.
Therefore, option C is not an advantage of the exoskeleton and is the correct answer.
For more such questions on Exoskeleton.
https://brainly.com/question/1470572#
#SPJ11
does mitosis produce cells that only have one copy of each chromosome
Answers
No, mitosis produces cells that have two copies of each chromosome.
During mitosis, a parent cell divides into two daughter cells, each with the same number of chromosomes as the parent cell. This process ensures that each daughter cell has a complete set of chromosomes and can function normally.
In contrast, meiosis is the process that produces cells with only one copy of each chromosome. This occurs during the formation of gametes (sperm and egg cells) in preparation for sexual reproduction. Each gamete has half the number of chromosomes as the parent cell, so that when they combine during fertilization, the resulting zygote will have the correct number of chromosomes.
So to summarize, mitosis produces cells with two copies of each chromosome, while meiosis produces cells with only one copy of each chromosome.
Learn more about mitosis here:
https://brainly.com/question/1186551
#SPJ11
Which is needed to obtain DNA from a crime scene or an individual?
Which is needed to obtain DNA from a crime scene or an individual?
clothing fibers
fingerprints
pedigree analysis
cells
Answers
To obtain DNA from a crime scene or an individual, the key requirement is cells.
Clothing fibers, fingerprints, and pedigree analysis are not directly related to the collection or extraction of DNA. DNA, the genetic material, is contained within cells of an individual's body.
Therefore, to obtain DNA, one needs a sample that contains viable cells. This can include various biological materials like blood, saliva, hair follicles with the root, skin cells, or semen.
These samples are collected using appropriate forensic techniques and then subjected to DNA extraction processes to isolate and analyze the genetic material.
Through DNA analysis, forensic investigators can establish links between individuals, identify suspects, or provide evidence in criminal investigations.
For more such answers on DNA
https://brainly.com/question/16099437
#SPJ8
A geneticist wants to determine what mutation in a DNA molecule changed the structure of a specific protein. What would the scientist need to know before planning the investigation?
Answers
Answer:
Explanation: 1+1
a second-generation elisa (stratify jcv™ dxselect™) for detection of jc virus antibodies in human serum and plasma to support progressive multifocal leukoencephalopathy risk stratification
Answers
The second-generation ELISA, called Stratify JCV DXSelect, is used to detect JC virus antibodies in human serum and plasma.
It is specifically designed to support the risk stratification for progressive multifocal leukoencephalopathy (PML). PML is a rare brain infection caused by the JC virus. By detecting the presence of JC virus antibodies, the ELISA test helps assess the risk of developing PML. This test is performed on human serum and plasma samples. It is an important tool for healthcare professionals to evaluate the potential risk of PML in patients who may be receiving certain medications or have underlying conditions that increase their susceptibility to this infection.
More on second-generation ELISA: https://brainly.com/question/33252958
#SPJ11
The light reaction requires
Answers
Answer:
a light reaction needs sunlight to begin
alloantibodies to blood-vessel endothelium on solid organ grafts _____.
Answers
Alloantibodies to blood-vessel endothelium on solid organ grafts can lead to a process called antibody-mediated rejection (AMR).
When a solid organ transplant, such as a kidney or heart, is performed, there is a risk that the recipient's immune system may recognize the transplanted organ as foreign and mount an immune response. Alloantibodies are antibodies produced by the recipient's immune system that specifically target and attack the antigens present on the endothelial cells lining the blood vessels of the transplanted organ.The binding of alloantibodies to the endothelium can trigger a series of immune responses, leading to inflammation, tissue damage, and ultimately rejection of the organ.This process is known as antibody-mediated rejection. It is characterized by the activation of the complement system, recruitment of immune cells, and injury to the graft's blood vessels.
To learn more about blood vessels, visit here
https://brainly.com/question/4601677
#SPJ11
1. What is the name of the process, where the cells absorb oxygen and nutrients, while getting rid of carbon dioxide and other waste products?
2. What is needed in the body for energy that is formed in the cells?
3. Why are not all cells in the body the same?
4. What is in the cell nuclei of cells?
5. What is the role of genes?
6. Plant cells have strong cell walls. Why do animals with only a thin cell membrane survive around the cells?
7. Fill in the missing words.
a) ------ is the body's smallest building blocks.
b) Cells that are similar to each other together forms one ------
c) An organ consists of several different ----- ones and together with other organs forms one -------
Answers
2. Cytoplasm in body cells ( since it contains organelles in which metabolic reactions take place for eg: chemical reactions of respiration occur during which energy is released for cell activities)
3. Because different cells carry out a different but specific function for the proper functioning of the body
4. The nucleus of a cell contains chromatin which is made up of coils of DNA bound to proteins.
5. Genes contain genetic information for the cell to manufacture particular proteins which determine the characteristics of the organism.
6.Because animal cells have thin, partially permeable cell membranes to control the passage of substances into and out of the cell.. (srry!, I didn’t quite know how to answer this correctly!)
7a)...a cell...
b) ...tissue...
c) sorry I dnt knw the first blank space.. , (2nd blank) ...system...
HOPE THIS WILL BE HELPFUL !! But sorry, I didn’t know 2 questions!
Devise a method to find the optimum temperature for the enzyme lactase.
Answers
Explanation:
To find the optimum temperature for the enzyme lactase, you can follow these steps:
1. Set up a series of experiments: Prepare several identical samples of lactase enzyme solution.
2. Choose a range of temperatures: Select a range of temperatures to test, such as 20°C, 30°C, 40°C, 50°C, 60°C, and 70°C. Make sure to include temperatures both below and above the expected optimum range.
3. Incubate the samples: Place each sample in a separate container and incubate them at the respective temperatures for a fixed duration, such as 5 minutes.
4. Add lactose substrate: After the incubation period, add a specific amount of lactose substrate to each sample.
5. Measure enzyme activity: Use a spectrophotometer or another suitable method to measure the enzyme activity in each sample. This could involve monitoring the rate of lactose hydrolysis by measuring the change in absorbance at a specific wavelength.
6. Repeat and control: Repeat the experiments multiple times to ensure accuracy and establish a control sample without lactase for comparison.
7. Plot the results: Create a graph with temperature on the x-axis and enzyme activity on the y-axis. Plot the data points for each temperature and draw a line connecting them.
8. Analyze the data: Examine the graph to identify the temperature at which the enzyme activity is highest, indicating the optimum temperature for lactase.
9. Repeat and validate: Repeat the experiment with slight variations to ensure consistency and validate the results.
By systematically varying the temperature and measuring enzyme activity, you can determine the temperature at which lactase exhibits maximum activity, providing insight into its optimum temperature range.