The statement that is true is as follows: the density of water is 1 gram per milliliter, so objects with a relative density greater than 1 gram per milliliter will sink (option C).
What is density?Density is the measure of the mass of matter contained by a unit volume. The density of a liquid substance is a determinant of whether the substance will float or sink in water.
Water is a liquid substance with a density of 1 gram per millilitres (1 g/mL). This suggests that any substance with greater density than that of water will sink while any substance with lesser density than water will float.
Density is a measure of how heavy something is compared to its size, hence, if an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
Therefore, according to this question, objects with a relative density greater than 1 gram per milliliter will sink.
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Hello I need help with this practice problem solving In your own words, shortly answer my pic above
The harmfully invasive Kudzu was introduced in the U.S. during the Philadelphia Centennial Exposition in 1876 where it was presented for sale as a green ornamental plant.
Kudzu is a green sturdy vine that is a climber. It is known for its sweet-smelling blooms. It is harmfully invasive because it poses great competition for the native plant, from grasses to large trees, and outcompetes them all by shading them and depleting them with their share of sunlight.
Ornamental plants are those that are grown for the purpose of decoration. These can be grown in gardens, fields or even indoors. Some examples of ornamental plants are: Snake Plant, String Of Pearls, Peace Lily, Chinese Money Plant, Air Plant and Water Bamboo.
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Help asap.
1. What is the structure of the brain that helps coordinate the movement of muscles in the body?
A.cerebellum
B.midbrain
C.hypothalamus
D.pons
Answer:
A. the cerebellum help coordinate the movement of the muscles in the body.
the earth orbits the sun true or false
Earth rotate in an orbit around the sun. It takes 365 days, 6 hours, 9 minutes for the earth to complete its revolution around the sun. Its directional rotation to the sun is counterclockwise. Leap year is scheduled on the 6 hours, 9 minutes which is an additional 24 hour every fourth year.
Answer - True
What is the meaning of life?
Answer:
The meaning of life is to positively influence as many of the lives around you as possible.
Explanation:
Some people begin to feel a sense of dread when thinking about how little space they take up, and how long they will be alive, because it seems quite small and meaningless in the grand scheme of things.
That, however, is a result of the human brain rationalizing the value and worth of something by how long it exists and how much space it takes up. In reality, something does not need to take up much space, or exist for very long, in order to be worthy and meaningful.
For instance, a hamster is very small and may live only three years before passing of old age. However, if that hamster made a person happy — filled them with joy every day when they arrived home, gave them a reason to get out of bed even when they didn't feel like it, gave them the feeling of love even while being isolated — then it had a very, very meaningful existence.
Humans are very small, and we exist for very short amounts of time, but we have the power to feel and love and change our surroundings, and as long as we leave behind a legacy of even one smile, or even one life saved (no matter how small - a lizard, perhaps), or even one moment of hope, then we will have fulfilled our purpose, and that is all we could ever ask for.
what is a colony forming unit and how is it used to infer microbial numbers in a sample?
Explanation:
A colony forming unit, or CFU, is a unit commonly used to estimate the concentration of microorganisms in a test sample. The number of visible colonies (CFU) present on an agar plate can be multiplied by the dilution factor to provide a CFU/ml result.
A measure of the quantity of viable colonogenic cells per milliliter is called a colony forming unit (CFU). These give an idea of how many cells are still alive and able to divide and create small colonies.
What are the colony forming unit and infer microbial?Colony-forming unit (CFU, cfu, or CFU) is a unit used in microbiology to measure the number of viable microorganisms (bacteria, fungi, viruses, etc.) in a sample that can multiply through binary fission under controlled conditions.
Colony forming units, or CFUs, are frequently used to calculate the number of microorganisms present in a test sample.
A CFU/ml result can be obtained by multiplying the number of visible colonies (CFU) present on an agar plate by the dilution factor.
Therefore, A colony forming unit, or CFU, is a unit commonly used to estimate the concentration of microorganisms in a test sample.
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What type of energy powers the process of photosynthesis?
Answer:
Chemical Energy
Which term describes an organism that remains in one place?
Sessile is the term used to describe an organism that remains in one place.
Why are some organism sessile?
Some animals such as corals and sponges are sessile. These animals don't expend their energy to catch their prey they live by attaching to a substrate. They choose a suitable spot to feed. They can be found on tree trunks, on rocks, and even in water.
Plants are typical example of sessile organism. They permanently grow in one spot taking nutrients from the soil and making use of the available sun for photosynthesis. Sessile organism doesn't have the ability to move from one place to another and it has a big advantage as they save energy and they also develop unique feeding mechanisms enabling them to survive in their habitat.
In summary, sessile organisms don't move yet they feed by attaching themselves to a substrate.
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Base your answers to questions 1 and 2 on the diagram below, which represente a metabolic process and on your knowlege of biology. the letter x in the process represents
x
□+□+□+□-> starch
1. an antibody
2. a receptor
3. a hormone
4 a enzyme
(1) An antibody is a representation of one of the following metabolic processes.
What is the metabolic process?Metabolism is the collective name for the set of chemical reactions that sustain life in organisms.
Converting the energy in meals into energy that may be used to power cellular processes is one of metabolism's three main tasks.
Metabolic reactions occur in particular regions of the cell.
The cytoplasm is also the site of glycolysis, fatty acid synthesis, and glycogen synthesis in addition to several stages of amino acid breakdown.
Different metabolic pathways have specific locations within the mitochondria.
Chemical reactions within the cell transform food into energy.
Our bodies need this energy in order to move, think, and develop.
Specific proteins in the body control the chemical reactions involved in metabolism.
Therefore, (1) an antibody is a representation of one of the following metabolic processes.
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Question 3 of 10Which of the following accurately describes a trade-off of using biomass as afuel?aA. Biomass produces no air or water pollution but is expensive tocollectB. Biomass is inexpensive but nonrenewable.C. Biomass is easy to produce but generates radioactive waste.D. Biomass is inexpensive and easy to produce but generates airpollution
The correct option is D. Biomass is inexpensive and easy to produce but generates air
pollution. Biomass burning might generate carbon dioxide, among other gases, which would counterattack the climate change goals, such as carbon dioxide mitigation.
Does diffusion take place in the nervous system? if it does, how so?
Answer:
In living things, diffusion allows substances to move in and out of cells. It's how red blood cells distribute oxygen through the body. When empty blood cells enter the lungs, which have an extremely high concentration of oxygen, the molecules pass into the blood cells, filling them up.
Explanation:
I need help with this practice problem solving The subject is the invasive speciesKudzu Review the pic, the answer^
Answer
Kudzu kills native plants by smothering them and blocking their sunlight. Climbing vines can girdle trees, and their weight can uproot trees. Loss of trees and plants to kudzu threatens agricultural and timber production. Kudzu would destroy the native species. Few plants can survive once smothered by kudzu and small ecosystems can be radically altered. Infestations quickly spread in open habitats, rapidly covering the soil and low growing vegetation, and only slowed by adjoining forests. Kudzu can affect indigenous plants and completely modify the structure of the ecosystem.
Kudzu is widely believed to drastically reduce biodiversity because of its ability to smother other vegetation and develop large-scale monocultures. It can climb overtop and subsequently kill new seedlings or mature trees. Forestry problems associated with aggressive vines such as kudzu include mortality of edge trees, exclusion of native plant species, and potential to increase fire hazard during winter.
Explain why humans need to eat food to survive and list the macronutrients needed in a healthy diet.
Food gives important nutrients to the human body. A healthy diet is vital for good health and nutrition. These nutrients are used for energy, cell growth, and repair. Food controls the immune system. Poor diets leads to various health problems. Food defends the human body from chronic noncommunicable diseases. Eating different kinds of food and taking less salt, sugar and saturated fats are needed for a healthy diet.
Macronutrients are consumed in large amount and carry the primary buliding blocks of our diet which are the protein, carbohydrates, and fat. These provides our body the energy it needed. Small doses of vitamins and minerals which are considered as macronutrients goes a long way.
The following are the 6 essential macronutrients:
1. protein
2. carbohydrates
3. fats
4. vitamins
5. minerals
6. water
FORENSIC SCIENCE - EASY
If you were investigating a crime and received a genetics report, which would be the most useful characteristic in helping identify the suspect?
Blood type
Brown hair
Blonde hair
Blue eyes
Which type of mutation speaks produces a stop condon?
Answer:
nonsense mutation
Explanation:
Of the most common cancers, which are the top 3 for 5-
year relative survival? Which are the bottom 3?
Answer:
Top 3 cancers for 5 years survival are:
1. Melanoma
2.Hodgkins lymphoma
3. Breast cancer
Bottom 3 cancers for 5 years survival are:
1. Mesothelioma
2.pancreatic cancer
3. Brain cancer
Explanation:
Prognosis describes how serious your cancer is and your chances of survival. 5-year survival means the percentage of people who will be alive 5 years after diagnosis.
Kudzu is an autotroph, denoting that it makes its own food from…Finish the sentence ^^ with the best estimated answer
Autotrophs are organisms that make their own food, making biomolecules using simple abiotic carbon compounds, such as carbon dioxide, and energy from light (photosynthesis) or from inorganic chemical reactions (chemosynthesis).
So, we could complete the question with "abiotic carbon compounds and light energy"
prophase of meiosis i has some important differences from prophase of mitosis. these differences include: ______ pair, and ______ occurs.
The prophase of meiosis I have a few essential variations from the prophase of mitosis. those differences include Homologous chromosomes pair, and crossing over takes place.
Mitosis is the department of frame cells and meiosis is the division of the sex cells or gametes-producing cells.
Mitosis is a process wherein a single cell divides into identical daughter cells. Whereas Meiosis is a technique in which a single cell divides twice to produce 4 cells containing 1/2 the initial quantity of genetic materials.
Meiosis I, the primary meiotic division, begins with prophase I. For the duration of prophase I, the complex of DNA and protein referred to as chromatin condenses to shape chromosomes. The pairs of replicated chromosomes are known as sister chromatids, and they remain joined at the center known as the centromere.
Prophase is the primary segment of mitosis, the manner that separates the duplicated genetic material carried within the nucleus of a discern cell into identical daughter cells. During prophase, the complex of DNA and proteins contained inside the nucleus referred to as chromatin condenses.
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explain the role of biotechnology in agriculture?
Biotechnology, at its most basic, is biology-based technology; biotechnology harnesses cellular and biomolecular processes to develop technologies and products that improve our lives and the health of our planet. The primary goal of modern biotechnology in agriculture is to improve the quality, quantity, nutrition, taste, and shelf life of produce, allowing stakeholders to achieve higher yield with lower energy costs.
This includes ancient agricultural processes such as fermentation as well as more recent examples of developing disease-resistant plant varieties through crossbreeding. Modern methods for improving agricultural practices through biotechnological progress include transgenic techniques, which revolve around the insertion of foreign DNA strands into the host genome to increase crop yield.
Agriculture biotechnology benefits include increased crop yield, reduced crop vulnerability to environmental stresses, improved nutritional qualities of food crops, improved taste, texture, or appearance of food, and reduced reliance on fertilizers, pesticides, and other agrochemicals.
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Which is the best definition of activation energy?
A) the energy required to end a chemical reaction
B) the energy required to bind a substrate to an active site
C) the energy required to form or break the bonds of reactant molecules
D) the energy required to re-form bonds in product molecules
Activation energy is the energy required to form or break the bonds of reactant molecules (option C).
What is activation energy?Activation energy of a chemical reaction is the energy required to initiate a reaction.
For example, the flame from the fuse of a firecracker provides a small initial amount of energy, after which the explosive reaction proceeds by itself, releasing a considerably larger quantity of energy.
The activation energy of a chemical reaction is strictly required to make a reaction occur i.e. conversion of reactants to products.
Therefore, the energy needed to break the chemical bonds of a reactant molecule is the activation energy.
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What is the relationship between land-use in general and deforestation
The use of land and deforestation historically have been connected since the beginning of human civilization, and when our species started to conquer new areas. Firstly for their establishment, and the production of crops of different plants for food. Currently, that's a continuous fact, mainly because of the increase of the human worldwide population.
5. What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?O a Facilitated DiffusionO b. DiffusionO c Passive TransportOd Osmosis
Facilitated Diffusion
1. Correct the following paragraph describing pigments, energy and photons.
Photons are the particle that makes up light. Photons with a longer wavelength of light have more energy than photons with a shorter wavelength. Pigments can only absorb photons that have the exact amount of energy required to move
an electron to a higher energy state. If a photon's energy doesn't match exactly, the photon is absorbed. Most plants
have one kind of pigment in their leaves. If a pigment is red, it absorbs only photons with a red wavelength.
2. Correct the following describing the light dependent reactions of photosynthesis.
The first photosystem is photosystem II. In this photosystem, photons are absorbed by pigments in the antenna complex and the energy is used to create an electron at the reaction center. This excited electron is then given to ADP.
The electron carrier is then reduced which provides energy for the electron transport chain to pump H+ ions into the chloroplast stroma. Then, H+ flows through ATP synthase to power the reaction of ATP - ADP + P. The electron that
left the reaction center is replaced through condensation of a water molecule into oxygen and nitrogen. The second photosystem is photosystem I. In this photosystem, photons are absorbed by pigments in the antenna complex and the energy is used to re-excite the low-energy electron from photosystem II at the reaction center. This excited electron is then used to oxidize NADP+ into NADPH.
1. Light has two personalities. Light acts primarily as a wave, but it may also be thought of as a collection of tiny bundles of energy known as photons. If a pigment is red, it absorbs photons of different wavelengths while reflecting photons of the same wavelength.
2. Photosystems, which are huge complexes of proteins and pigments (light-absorbing molecules) that are tuned for light harvesting, play an important part in light reactions. Photosystems are classified into two types: photosystem I (PSI) and photosystem II (PSII).
How to illustrate the information?1 A photon is an electromagnetic energy packet. It is the fundamental unit of all light. The photon is also known as a "quantum" of electromagnetic energy. A photon's energy is proportional to its wavelength: longer wavelength photons have less energy, while shorter wavelength photons have more.
2 Light energy is used in light-dependent reactions to create two molecules required for the next step of photosynthesis: the energy store molecule ATP and the reduced electron transporter NADPH. Light reactions occur in the thylakoid membranes of chloroplast organelles in plants.
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Which is the most inclusive division of time on the geologic time scale?A. epochB. periodC. eraD. eon
The most inclusive division of time is the eon, which can be Archean, Proterozoic, Phanerozoic and they are divided into eras (Early/Middle/Late for the Archean and Proterozoic, Paleozoic, Mesozoic and Cenozoic for the Phanerozoic). Therefore, the correct answer is D. eon.
HELP ME PLEASE
In what types of food is the protein content the highest?
Answer:
According to the WebMD, seafood, lean beef (including tenderloin, sirloin, and eye of round) and lean pork, eggs, beans, and low-fat dairy products have the highest protein content.
If your nanodrop is giving you a plasmid DNA concentration of 178.9 ng/µL what is the volume of sample, you need to take in order to have 10 ng DNA final concentration?
Please help!!
Thanks.
The volume of the solution is obtained as 0.056 µL.
What is the concentration?We know that the term concentration refers to the amount of substance that is present in a sample. In this case, we are told that you have a plasmid DNA concentration of 178.9 ng/µL. We are now being asked for the volume of the sample that is needed so that we can have 10 ng DNA final concentration.
Let us now look at the parameters that we have from the question and these are;
Concentration = 178.9 ng/µL
Mass of the sample = 10 ng
Volume of the sample = ???
We know that the volume is going to be obtained as the ratio of the mass to the concentration of the solution from the data that we have and have been itemized in detail above.
Given that we have;
Volume = mass/concentration
Volume = 10 ng /178.9 ng/µL
Volume = 0.056 µL
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What is theory in science means
Solution:
Scientists use conceptual processes to understand nature through questions or propositions.
The method on which scientific investigations are based is the scientific method and it is the hypothesis-prediction approach.
This approach allows scientists to modify their conclusions as new information becomes available.
The method consists of five steps:
1. Make observations
2. Ask questions
3. Form hypotheses, which are tentative answers to questions.
questions
4. Make predictions based on the hypotheses
5. Test the predictions by making additional observations or conducting experiments.
If the test results support the hypothesis, it is subjected to additional predictions and tests. If they continue to support it, confidence in its correctness increases and the hypothesis comes to be considered a theory.
Therefore, a theory is a demonstrable model supported by experimentation (empirical facts) and data that explains a phenomenon. In other words, a theory is a set of concepts, including abstractions of observable phenomena and quantifiable properties, along with rules that express the relationships between observations of those concepts.
What’s the correct answer answer asap for brainlist
The function of most proteins depends primarily on the?
The function of most proteins depends primarily on the Tertiary structure which formed by peptide bond, hydrogen bond, covalent bond, and disulphide bond.
Protein Structure- The three-dimensional configuration of an amino acid-chain molecule's atoms is known as protein structure. Segments of amino acids, the polymer's monomers, are used to create proteins, specifically polypeptides. A single amino monomer can also be referred to as a residue, which denotes a polymer's repeating unit.
Peptide Bond- Whenever the carboxyl group with one molecule combines with amino amino group of another molecule, the outcome is the production of an amide group and a water molecule, which is known as a peptide bond.
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Which of the following best describes hearing receptor "hair cells"?
a. They are neurons.
b. They lack ion channels.
c. They are epithelial, but function like neurons.
d. They are made of keratin.
Answer:B
Explanation:Science
Hair cells best describe as they are epithelial, but function like neurons
What are hair cells ?The basic sensory receptor cells in the inner ear, known as hair cells, transduce, or change into electrical impulses that are sent to the brain, mechanical sensations generated by sound and head motions.
The sensory receptors of the auditory and vestibular systems in the ears of vertebrates are found in hair cells, which are distinguished by the stereocilia bundle at their apical surface. Mechanical impulses are converted into electrical activity by hair cells.Due to the hair-like cilia—stiff, nonmotile stereocilia and flexible, motile kinocilia—that extend from the apical ends of the sensory cells, they are known as hair cells. The vestibulocochlear nerve's superior, or vestibular, division is where the nerve fibres originate.Learn more about Hair cells here:
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I need help with this answer it’s a bit tricky
Correct option is number four, all current organisms share a common ancestor. Which is one of the backbones of its evolutionary thinking.