4. When a kangaroo jumps, the kangaroo's action force acts on the ground, what would be the
reaction force?
acts on the kangaroo
c. lesser than the action force
b. exerted by the ground
d. greater than the action force
a
Answers
Answer:
D
Explanation:
because after the jump it will gain force forst
Related Questions
Leonora is a medical lab technician who detects interferons in a person's blood sample and concludes that the person has?
Answers
They detect in the immune system that germs or cancer cells are present in the person's body.
What are interferons?Your body's natural defenses include a class of proteins known as interferons. They alert your immune system to the presence of pathogens or cancerous cells in your body. Additionally, they activate killer immune cells to combat the invaders. Because they "interfere" with viruses and prevent their growth, interferons received their name.
A family of naturally occurring proteins known as interferons is produced and secreted by immune system cells (for example, white blood cells, natural killer cells, fibroblasts, and epithelial cells).
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please help!! this is urgent
Answers
Rr - red
rr - white
What is the best course of action if solids remain in the flask after the recrystallization heating step? Select one:A Allow the mixture to cool, then strain the mixture.B. Remove solids with a spatula.C. Repeat the heating recrystallization step.D. Filter the hot mixture.
Answers
If solids remain in the flask after the recrystallization heating step, the best course of action would be to filter the hot mixture.
This can be done by using a filter paper and a funnel to collect the liquid while leaving behind the solid impurities. It is important to filter the mixture while it is still hot to prevent the solid impurities from re-precipitating as the solution cools.
If the solid impurities are not filtered out, they may affect the purity of the final product. Repeating the heating recrystallization step or removing the solids with a spatula may not effectively remove all of the impurities and could result in a lower yield of the desired product.
Allowing the mixture to cool and then straining it may also not be effective as the solid impurities may not separate from the solution easily.
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is Human Bone a Plant / Animal / Neither
Answers
Answer:
Neither
Explanation:
A human bone is a non living organism therefore it cannot be a plant or an animal because those are living organisms.
what is the least number of trnas that can be used to recognize all of the codons of isoleucine, and what is/are the anticodon(s)? (in the answer choices, i
Answers
Transfer RNAs have three base sequences (3'-5') known as anticodons that can recognize and base pair with mRNA codons in the 5'-3' direction.
Anticodons:
anticodons are nucleotide sequences that are complementary to codons. They are located in tRNAs and allow tRNAs to align the right amino acid with an mRNA during protein synthesis.
During protein formation, amino acids are strung together like beads on a necklace. Because amino acids have diverse characteristics, it is critical that the correct amino acids are employed in the precise areas. Putting the incorrect one in the wrong place might render a protein ineffective or even hazardous to the cell.
This image depicts a developing protein chain. The bottom left shows tRNAs carrying amino acids entering the ribosome complex.
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A decrease in diaphragmatic excursion is associated with what class of restrictive disease? O Neuromuscular O Abdominal O Skeletal O Pulmonary
Answers
A decrease in the diaphragmatic excursion is associated with the pulmonary restrictive disease.
A diaphragmatic excursion is the movement of the diaphragm during respiration. It is a measurement of how much the diaphragm is contracting or moving downwards during inhalation and how much it is relaxing or moving upward during exhalation.
Restrictive lung disease is a type of lung disease characterized by a reduction in lung volumes, either due to an alteration in the lung parenchyma, pleura, chest wall, or neuromuscular function. In restrictive lung disease, the lung's capacity to expand is reduced, making it difficult for a person to breathe in sufficient oxygen.
Therefore, a decrease in the diaphragmatic excursion is associated with pulmonary restrictive disease.
The major restrictive lung diseases are:
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In 3–5 sentences, explain how increases in the human population impacts water resources. Provide specific examples in your answer.
Answers
The increase in human population impacts water resources as follows:
increase in water pollutionscarcity of clean potable wateroverfishing and hunting of water organismsWhat are the effects of an increase in the human population?The human population refers to the number of individual humans that can be found in a given area at a particular time.
All over the world, there has been an increase seen in the human population, especially in developing countries.
The effects of an increase in the human population include:
The need for food, water, housing, energy, healthcare, transportation, and other resources will rise as the population grows.And all that consumption raises the probability of major catastrophes like pandemics, ecological destruction, and greater violence.Learn more about the increase in human population at: https://brainly.com/question/24067944
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what features became increasinly developed through natural selection during hominin evolution?
Answers
During hominin evolution, key features such as the skull and skeleton, tool use, and bipedalism developed and improved through natural selection to help early human ancestors survive and thrive.
Hominin evolution is the process by which early human ancestors evolved and diversified over millions of years. During this time, a variety of features became increasingly developed through natural selection to help our ancestors survive and thrive in their environments.
Some of the most notable developments in hominin evolution include changes in the skull and skeleton, the development of tool use, and the evolution of bipedalism. One of the most important developments during hominin evolution was the evolution of the skull and skeleton. Over time, early human ancestors evolved larger brains, smaller brow ridges, and more refined jaw and tooth structures.
These changes allowed our ancestors to better process and digest food, as well as to develop improved speech and language abilities. Another important development during hominin evolution was the development of tool use. Early human ancestors learned to create and use simple tools, such as stones and sticks, to help them hunt and gather food.
Over time, these tools became more sophisticated and specialized, allowing our ancestors to effectively compete with other animals for resources. Finally, one of the defining features of hominin evolution is the evolution of bipedalism.
Early human ancestors gradually evolved the ability to walk on two legs, which allowed them to better traverse their environments, carry objects, and communicate with one another. Bipedalism is a key characteristic of the hominin lineage, and it played a crucial role in the evolution of early human ancestors.
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State the 7 steps required to replicate DNA. Include enzymes names and their functions.
Answers
Answer: Step 1: Replication Fork Formation. Before DNA can be replicated, the double stranded molecule must be “unzipped” into two single strands. ...
Step 2: Primer Binding. The leading strand is the simplest to replicate. ...
Step 3: Elongation. ...
Step 4: Termination
Explanation:
Which statement best explains the shape of these layers of rock?
O A. Stress caused by forces that pull on both sides of an area of the
crust made the rock melt.
O B. Stress caused by tectonic plates moving at a transform boundary
made the rock break.
O C. Stress caused by a collision between two tectonic plates made the
rock bend
O D. Stress caused by the weight of the upper layer of rock made the
rock tilt
Answers
Answer:
C. Stress caused by a collision.........made the rock bend.
Answer:
C. Stress caused by a collision between two tectonic plates made the rock bend
Explanation:
How is the taiga different from the tundra!
A) Evergreen trees grow in the taiga very little plant life grows in the tundra
B) Many animals live in the taiga no animals live in the tundra
C) The taiga is very warm the tundra is very cold
D) The taiga exists around the north pole the tundra exists around the south pole
Answers
Answer: C
Explanation:
If a genetic disorder is recessive, how do offspring develop the disorder?
Group of answer choices
They inherit a faulty gene from one parent.
They inherit a faulty gene from each parent.
Their genes mutate in response to their parents’ genes.
Their genes are affected by the environment
Answers
What are several ways that humans alter the natural habitat?
Answers
Answer:
cuting trees, killing animals, and pollution.
Answer:
"Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water."
Explanation:
sources: nationalgeographic
How do seismic waves help scientists understand Earth's layers? Select the two correct answers. (1 point)
Scientists can observe how seismic waves multiply when passing through different layers.
Scientists can observe how seismic waves change speeds when passing through different layers.
Scientists can observe which seismic waves change the composition of the layers they pass through.
O Scientists can observe which seismic waves cannot pass through certain layers.
Scientists can generate seismic waves in order to observe their paths through Earth.
Answers
Seismic waves help scientists understand Earth's layers by:
Scientists can observe how seismic waves change speeds when passing through different layers.Scientists can observe which seismic waves cannot pass through certain layers.What are Seismic waves?These are waves which are generated as a result of the movement of
materials in the earth. They change speed as a result of the collision with
materials in the earth and know the types of material present as a result of
some types not being able to pass through certain medium.
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Answer:
Scientists can observe how seismic waves change speeds when passing through different layers.
Scientists can observe which seismic waves cannot pass through certain layers.
Explanation:
answer for 2022 to 2023
1. Which of the following is an example of sensitization:
You blink each time your eye doctor gives you a puff of air in your eyes.
A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.
You no longer feel your shirt touching your skin.
You're walking on the sidewalk and a bicyclist almost hits you, so you jump out of the way.
Answers
The example of sensitization from the given alternatives is that 'A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.'
Sensitization refers to the process in which an organism becomes more sensitive to stimuli, both good and bad. It happens when the body's nervous system becomes oversensitized to a particular stimulus that it begins to respond even to weaker or non-threatening stimuli.
The example given in the first option refers to a simple reflex action that occurs in response to the puff of air that is blown into the eyes during the eye examination. The third option is about sensory adaptation, which occurs when sensory receptors are exposed to stimuli for an extended period, resulting in a reduction in sensitivity. The fourth option refers to the fight or flight response that occurs as a result of a threatening stimulus, in which an individual's body prepares to confront or flee from danger.
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9. The food web for an ecosystem is represented below. (7.5B) Rabbits Foxes Mice & Carrots Owls Birds Grasshoppers, √ Grasses Gr Grains Based on the food web, the populations of which two organisms would directly impact the population of grasshoppers? O O O O Carrots and owls Birds and grasses Mice and grains Foxes and mice
Answers
Where does cellular respiration and photosynthesis occur?
Answers
cellular respiration occurs in the mitochondria whereas photosynthesis occurs in the chloroplasts
A benefit of moderate physical activity is the reduction in risk of hypokinetic disease and early death.
Answers
An individual with sedentary lifestyle might be at risk for hypokinetic diseases such as high blood pressure. Moderate physical activity such as walking and biking gives a great benefit to avoid such risk. Moderate physical activity can reduce major medical conditions that might lead to early death. Too little movement or activity might lead to hypokinetic diseases. Regardless of the intensity of the physical activity, it will lower the risk of an early death due to hypokinetic diseases.
explain why fresh water protozoa like amoeba do not burst when placed in distilled water
Answers
Answer: I hope this helps you
Explanation: https://ay.live/jPM5h
Which of the following is NOT a type of tissue found in plants?A) DermalB) Non livingC) VascularD) Ground
Answers
Plants have three types of tissues:
• Dermal, tissue, which forms the surface of the leaves and stem.
,• Vascular, tissue, which includes xylem and phloem
,• Ground, tissue, where photosynthesis takes place.
This means B, non-living is the right answer because is NOT a type of plant tissue.
Describe in detail the procedure you plan to use to help preserve biodiversity. Make sure to list what materials you will need and what data you will collect.
Answers
One potential action to help conserve biodiversity is:
Choose a place that needs preservation, like a coral reef or a rainforest.Perform a survey to learn more about the local species, including their abundance and ecological functions.Create a strategy to safeguard the region's biodiversity.Execute the strategy and track its success over time.BiodiversityFinding a place that needs to be protected, such as a coral reef or rainforest, and carrying out a survey to learn more about the local species could be one method for preserving biodiversity. Data collection for this survey may include information on the number of species, their distribution, and their ecological functions. A strategy to safeguard the region's biodiversity can be created based on the facts provided. This strategy might entail establishing protected areas, restricting activities by humans that damage the ecosystem, or implementing conservation measures for threatened or endangered animals. It is crucial to put the strategy into action when it has been created and to track its efficacy over time.learn more about biodiversity here
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The diagram shown represents cells seen in the low-power field of view of a compound light microscope. (1mm = 1000μm) Length of one of these cells is approximately:
A) 200 mm
B) 400 mm
C) 500 mm
D) 2,000 mm
Answers
Answer:
Where is the picture
Explanation:
the very ends of chromosomes in cells, which may be correlated with longevity, are known as:
Answers
The very ends of chromosomes in cells which may be correlated with longevity, are known as telomeres.
Telomeres are specialized structures made up of repeating DNA sequences and protective proteins that cap the ends of chromosomes, helping to protect them from damage and degradation.
As cells divide, their telomeres gradually become shorter, which can eventually trigger cellular senescence or programmed cell death. This process is thought to be one of the factors involved in aging and age-related diseases.
Some research suggests that lifestyle factors, such as exercise and stress reduction, may help to maintain telomere length and promote healthy aging.
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people with red hair usually have very light skin. What might be a genetic explanation for this observation?
Answers
Answer:
People with red hair usually have very light skin. What might be a genetic explanation for this observation? most color pigmentation goes towards hair and not much is left for skin.
Explanation:
People with red hair usually have very light skin is that most color pigmentation goes towards hair and not much is left for skin.
Why do redheads have pink skin?Pheomelanin ranges from red to pink. Redheads have much more pheomelanin than eumelanin in their bodies
Thus, most color pigmentation goes towards hair and not much is left for skin.
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If the DNA strand is AGT, translate the mRNA codon and find the correct amino acid.
Hint: Use your matching base pairs to translate into mRNA
A. Tryptophan
B. Serine
C. Stop
D. Valine
Answers
Answer:
B. Serine
Explanation:
Hope this helps
Answer:
B. Serine
Explanation:
The serine is the required amino acid. So, option (B) is the correct answer.
During a biology lab you are asked to look at an animal and
a bacterial cell under a microscope and document what
components they both share in common. Which of the
following is NOT a feature that all cells have in common?
1.Dna
2.cell membrane
3.cell wall
4.cytoplasm
Answers
Answer:
2. Cell wall
Explanation:
animals and some other organisms don't have cell walls, unlike plants (which has cellulose cell walls), bacteria (which has murein or peptidoglycan cell walls), etc.
19) List the layers of the leaf starting at the upper cuticle all the way to the lower cuticle.
Read This!
Inside plant veins are two different types of tissues. Xylem carries water and minerals up from the roots of the plant and phloem carries the sugars (nutrients) away from the leaf to areas where the plant is growing or to storage areas in the plant.
Describe the position of the vein(s) in each model.
20a) In the leaf in Model 2.
20b) Within the leaf cross section in Model 3.
21) How does the placement of veins help to carry out their function of transporting materials to and from the leaf?
22) Which kind(s) of cells have chloroplasts in them?
23) Remembering the function of chloroplasts, in which part(s) of the leaf is photosynthesis taking place?
24) The green color of chloroplasts is due to a pigment in them that absorbs light energy. Knowing this, infer which layer inside a leaf gives the whole leaf its green color. Write one complete sentence to express your reasoning.
25) Through which layer(s) does light energy travel to reach the palisade mesophyll?
26) List at least three differences between the cells of the palisade mesophyll and the cells that make up the other areas within the leaf.
1)
two)
3)
27) How would the cylindrical shape of the palisade mesophyll cells increase the amount of photosynthesis that the leaf can carry out?
28) What would be the advantage(s) to having no chloroplasts in the cells of the spongy mesophyll?
29) Suppose there were many chloroplasts in the cells of the upper epidermis. How would that change the amount of sunlight reaching the chloroplasts in the palisade layer?
30) Considering its locations and your previous knowledge of the word, what do you think might be the function of the epidermis?
31) Considering its locations and your previous knowledge of the word, what do you think might be the function of the epidermis?
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The cuticle covering the upper and lower epidermis of land plants is made of a waxy substance that repels water in much the same way as wax on a paper cup.
32) What is the purpose of having a water-tight covering?
Look carefully at the lower surface of the leaf in Model 3.
33a) What structure is found between guard cells?
33b) How would you describe this structure?
33c) How would this affect the ability of the leaf to retain water especially in dry conditions?
34) Suggest a way in which the stoma and guard cells arrangement might work to control the amount of water that is leaving the leaf.
35) What is the relationship between the stoma and an air space?
36) Looking back at Model 2, what gases might you find inside the air spaces?
37) During the time that stomata (the plural of stoma) are closed, gases cannot enter or leave. Explain how this would affect the plant's ability to do photosynthesis.
38) During the time that stomata (the plural of stoma) are closed, gases cannot enter or leave. Explain how this would affect the plant's ability to do photosynthesis.
39) How would the cuticle and stomata work together to maintain the leaf’s function?
Extension Questions
40) In grammatically correct sentences, trace the path of the reactants for photosynthesis as they enter the leaf.
41) In grammatically correct sentences, trace the path of the products of photosynthesis as they exit the leaf.
help me please
Answers
Animal cells lack chloroplasts; exclusively plant cells contain. The production of sugars, which power the cell's mechanism, is the role of the chloroplast.
What are cells called?Cells are the essential building blocks of all living things. There are two different types of cells: prokaryotic cells, which lack a nucleus but still possess a nucleoid area, and prokaryotic organisms, which have a nucleus. They provide the body with structure, take in nutrients from food, convert that energy in and out of electricity, and carry out certain functions.
Where do cells come from?Scientists once believed that life organically evolved from inanimate substances. As a consequence of investigations and the invention of the microscope, it is now understood that cells arise from preexisting cells and that life derives from earlier life. Cells mostly come into one of two categories: prokaryotic or eukaryotic.
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1. Evidence of neuroplasticity is evident in both the hippocampus and the amygdala.
True or False
2.
MAOI is a/an
Group of answer choices
enzyme that converts phenylalanine to tyrosine.
enzyme associated with the presynaptic cell that breaks down monoamines.
phenylalanine receptor.
a form of antidepressant medication.
Answers
1. True
2. A form of antidepressant medication.
The process of ______________ occurs in the _____________and forms RNA while the process of ____________ occurs in the _________________ and forms protein.
Answers
Answer:
1. Transcription, Nucleus
2. Translation, Ribosome (Cytoplasm)
Explanation:
All living organisms contains genetic material in their nucleus (for eukaryotes), usually in the form of DNA. The DNA stores the information that encodes the synthesis of useful products (proteins). However, the encoded information needs to be expressed, which is done in two major stages namely: transcription and translation.
Transcription is the first process of gene expression which occurs in the NUCLEUS of eukaryotic cells, since the DNA is located there. Transcription involves the synthesis of a RNA molecule from a DNA template i.e. the information in the DNA is used to produce a RNA.
Translation is the second process of gene expression. In eukaryotes, the RNA transcript moves out the nucleus into the cytoplasm of the cell, where organnelles called RIBOSOME attach to it. In the ribosome, the RNA is used to synthesize amino acid sequence, which eventually becomes a PROTEIN. Hence, the information contained in the RNA molecule is translated into a protein molecule.
Write a short paragraph giving your opinion as to whether it is right to use stem cells or not.
Answers
Answer:
Stem cells are important for living organisms for many reasons. ... In some adult tissues, such as bone marrow, muscle, and brain, discrete populations of adult stem cells generate replacements for cells that are lost through normal wear and tear, injury, or disease.
Explanation: