what information can be determined about using half-life?
Answer:
The half-life of an isotope is used to describe the rate at which the isotope will decay and give off radiation.
Explanation:
what are the SI units of measurement (in science)
Answer:
The units and their physical quantities are the second for time, the metre for measurement of length, the kilogram for mass, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity.
Answer:
in 1960 ad an international convention of metrologist suggested a same unit all over world called Si unit
Which of these is a scientific hypothesis about the growth of a plant? A Plants make a pretty decoration in the house. B It's fun to watch this plant grow. C Plants grow best when they are happy. D This plant will grow best in sunlight.
Answer:
D. Plants grow best in sunlight.
Explanation:
The other answers can't be scientifically proven, therefore they would not make a good hypothesis. A hypothesis is a statement that can be tested and verified.
Plant will grow best in sunlight. So, the correct option is (D).
What is the scientific hypothesis about the growth of a plant?According to the evolution-immunity hypothesis in ecology, fast-growing plant species should suffer more from herbivores and pathogens than slow-growing species. Tests of this hypothesis have focused on above ground plant tissues, herbivores and pathogens. This should also apply to route defense.
When the amount of fertilizer applied to the plants is increased, the growth which is the height of the plant increases. As the amount of fertilizer increases, plant growth increases.
Plant growth shall be considered as an increase in plant volume and/or mass with or without the formation of new structures such as organs, tissues, cells or cell organelles that grow in the presence of sunlight.
Thus, plant will grow best in sunlight. So, the correct option is (D).
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Alpha helix and pleated sheets are example of _________ Protein Folding.
Answer:
Secondary structure proteins folding
Explanation:
Alpha helix and pleated sheets are basically two types if secondary structure of Proteins.
Which of the following describes the products of meiosis?
Answer:
Sry JK
Answer: In contrast to a mitotic division, which yields two identical diploid daughter cells, the end result of meiosis is haploid daughter cells with chromosomal combinations different from those originally present in the parent. In sperm cells, four haploid gametes are produced.
The product of meiosis is four haploid daughter cells with genetically different as compared to their parents.
What is Meiosis?Meiosis may be defined as the type of cell division in which a parent cell is able to synthesize four daughter cells that are haploid in nature. These daughter cells are genetically dissimilar with respect to their parents. It is also known as reductional division.
The process of meiosis generally occurs in the germ cells (sex cells) of males and females. The division of cells occurs twice in meiosis. Meiosis is generally completed in two steps that are as follows:
Meiosis IMeiosis II.These steps are further divided into Prophase, Metaphase, Anaphase, and Telophase. Overall, it significantly determines the nature as well as the characteristics of a cell
Therefore, the product of meiosis is four haploid daughter cells with genetically different as compared to their parents.
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The question seems incomplete. Your complete may be as follows:
Which of the following describes the products of meiosis?
2 genetically identical daughter cells.4 genetically identical daughter cells.2 genetically non-identical daughter cells.4 genetically non-identical daughter cells.On the way to school, a student rides his bike to the bus
stop. He then waits a few minutes for the bus to come
and rides the bus to school. The bus stops at school, and
he walks from the parking lot to his first class. Is the
graph of his distance always increasing? Explain.
Answer:
the distance is increasing
hope it helps
pkz mark as brainliest
Answer:
the graph is decressing
Explanation:
What do you think is needed for a seed to grow into a sprout? This process is called germination
Which type of muscle tissue is both voluntary and striated? O smooth o cardiac skeletal heart
Answer:
Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.
Explanation:
The type of muscle tissue that is both voluntary and striated is the skeletal muscle.
What is a skeletal muscle?The skeletal muscle is the type of muscle that makes up about 40% of the total human body mass.They perform the following functions:
They are attached to the bones and allows movements,They help to maintain postureThey generate heat.These functions are possible because of the features of the skeletal muscle which is that they posses striations and they are voluntary.
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explain why a cell a matter? PLZ HELP I WILL MARK YOU BRAINLIST
Answer:
cells are the smallest structural units of living matter and compose all living things.
Explanation:
fact
matter is everything (living and non living)
cell is the basic unit of organism (living)
so cell is part of matter cause matter compose everything int the universe
cells are the basic small and structural units of living matter and composed of organelle mostly made up of biomolecules.
what are the types of cell ?Cell is the basic structural unit of any living system, present in animal, plant, microbes etc where Bacteria are unicellular in nature as it is composed of single cell, higher eukaryotic organisms are multicellular like plants and animal cell as it is made up of multiple cells.
The prokaryotic cells are simplest cell which have a cell membrane, cytoplasm and other cell organelles where the metabolic processes occur, ribosome is the organelle where protein synthesis occur, and nucleoid carry genetic information, reproduce by binary fission.
The eukaryotic cells are more complex which have cell membranes, cytoplasm, ribosomes, and nucleus, rough endoplasmic reticulum, smooth endoplasmic reticulum for lipids, Golgi apparatus for protein sorting and exporting.
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is exocytosis active or passive transport
Answer:
e it is a active transport
E. Coli is a type of prokaryotic bacterium that is present in contaminated food. Which describes where the genetic material is found in E. Coli?
A.nucleus
B.cytoplasm
C.cell membrane
D.ribosomes
Answer:
NUCLEUS
Genome structure
Explanation:
What type of antenna where Penzias and Wilson testing in 1962 that led to their discovery of one of the biggest piece
of evidence supporting the Big Bang Theory
In 1964, Bell Labs scientists Arno Penzias and Robert A. Wilson were conducting experiments with the Holmdel Horn Antenna, an extremely sensitive device originally used to detect radio waves that were bounced off Echo balloon satellites, and later Telstar, the first active communications satellite. These radio waves were so weak, that it became critical to eliminate all possible interference in order to detect them.
Despite taking all conceivable steps to eliminate interference, they continually detected a strange, buzzing noise that was coming from all parts of the sky at all times of day and night. They did a range of additional testing on the equipment, and even removed some pigeons that were nesting in the antenna and their associate detritus. Still, the sound persisted. They ultimately determined that the noise was coming from outside of our galaxy
Almost by chance, they later learned that researchers and astrophysicists Robert H. Dicke, Jim Peebles and David Wilkinson at nearby Princeton University were looking for a way to detect residual radiation that they believed would have resulted from the Big Bang. As it turned out, the radiation detected by Penzias and Wilson was a perfect match for what the Princeton researchers had predicted, and hence made history.
Arno Penzias (left), Robert Wilson (center) and Keith Jefferts (right) look through a model of the universe to the constellation Orion where, for the first time, they discovered carbon monoxide in outer space.
From the archives
An audio recording of the CMBR noise was captured and narrated by Robert A. Wilson. This discovery in 1964 by Penzias and Wilson, announced in a Bell Labs press release, earned the researchers a Nobel Prize in Physics and provided the basis for future astronomical discoveries.
edit-ion think i read that right so this may be not be right but fun fact sorry
which should not be part of scientific inquiry bias,hypothesis,analysis,testing
Answer:
Bias
Explanation:
Bias is when your belief or someone elses gets in the way of having fair and equitable results. Bias should not be part of any scientific experiment, as it degrades the project. In most cases, bias is bad.
What is stored in carbon bonds?
O water
O energy
O glucose
Ο ΑΤΡ
Answer:
energy...................
How could the tomato plant’s response to being eaten by a hornworm caterpillar be described as a function of homeostasis?
Answer:
The required answer is given below:
Explanation:
This can be clarified with the idea of induced resistance. it is the capacity of a plant to react to the specific compound delivered from the damaged body parts, The dispersion of the synthetic animates all different plants parts and different plants to be less delectable and thusly not wonderful to eat. In this manner the more the degree of harm to the plant, the higher the volume of synthetic compounds delivered, and consequently the less delicious the plants and lower the harms negative criticism instruments. Since this reestablished the plants to moderately consistent inner environments, this is homeostasis.
Hornworm caterpillar harms tomatoes plants leaves, leaving holes. When a tomato plant is eaten, it discharges a compound substance called methyl jasmonate. The last would be gotten by adjoining plant parts or other tomato plants. The open tomato plants hence turn out to be less scrumptious. Subsequently, the caterpillar in the wake of crushing the underlying aspect of the tomato plants would not have the option to proceed with the taking care of and in this manner feed on each other prompting their death, turning them to cannabis caterpillars.
Since trying to keep up the generally consistent interior condition plant discharges methyl jasmonate to forestall further harm and in this manner guarantees the soundness of the plant.
Is astrology an example of science or pseudoscience? Explain your answer.
Answer:
Pseudoscience
Explanation:
Astrology provides a quintessential example of a pseudoscience since it has been tested repeatedly and failed all the tests and it has not demonstrated its effectiveness in controlled studies and it has no scientific validity.
As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. which characteristic of water causes adhesion? Help
A ) Cohesion
B ) Solvent capabilities
C) ability to change state
D) Hydrogen bonds
As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. The characteristic of water causes adhesion is hydrogen bond. Thus, option D is correct.
What is water?Water has been defined as the water present in the underground water below the soil as well as in the crack of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are known as hand-dug wells, springs, and drilled boreholes.
The water stored under the ground has been obtained from rain and stored in ground so that it can be used later. Ground water has observed very clean and fit for drinking and the reason has been the soil present on top and work as filter and the groundwater is free from all microorganisms.
The use of groundwater is just to wash dishes and cooking utensils in cold, soapy water,Use a disinfectant wash cloth to clean the refrigerator. Rinse and wash contaminated clothing separately.
Therefore, As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. The characteristic of water causes adhesion is hydrogen bond. Thus, option D is correct.
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Can you help me with the question listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!! Answer choices Decrease or Increase
Answer: Decrease
Explanation: Because their foot is being used more.
I think that's what it said.
Several factors affect an organisms ability to fossilize. The unlikelihood of fossilization results in large gaps in the fossil record. Which would decrease the likelihood that an organism fossilizes?
Complete question:
Several factors affect an organism´s ability to fossilize. The unlikelihood of fossilization results in large gaps in the fossil record. Which of the following would decrease the likelihood that an organism fossilizes?
The organism lower on the food chainThe organism higher on the food chainThe organism with a hard body rather than a soft bodyThe organism that lived in a marine or aquatic environmentAnswer:
The organism higher on the food chain
Explanation:
The organism lower on the food chain. Their high reproduction rate, as well as their numerous populations, favor them at the moment of fossilizing under different environmental conditions. The organism higher on the food chain. These organisms tend to be predators or bigger animals, characterized by small populations with a reduced number of individuals in comparison with smaller organisms. The fact that their reproductive rate is not very high, that they live longer and hence they are fewer in number, do not favor their fossilizing possibilities under different environmental conditions.The organism with a hard body rather than a soft body. Hard tissues always increase the possibilities of fossilizing, as their biological or mechanical destruction is not as easy as the destruction of the soft tissues. The organism that lived in a marine or aquatic environment. It seems that those organisms that live in a sedimentary environment, such as the sea or a lake, or those that live buried or fixed to the bottom, have more possibilities of fossilizing.HURRY PLS HELP ASAP
Which substances compose the backbone of DNA?
sugars and lipids
phosphates and amino acids
sugars and phosphates
lipids and proteins
Answer:
sugars and phosphate compose backbone of dna
Answer:
sugars and phosphates
Explanation:
c
The rate of species extinction on Earth is currently very high—perhaps as high as it has been since the time of the dinosaur extinction. Which of the following disruptions is not a major cause of this high extinction rate? a The hunting and overfishing of wildlife b The introduction by humans of invasive species into habitats c The use of animals in scientific research and experiments d The draining and filling of wetlands
Answer:
C. The use of animals in scientific research and experiments.
Explanation:
I got this answer correct when I took it.
The disruption which is not a major cause of a high extinction rate is: C. The use of animals in scientific research and experiments.
Extinction can be defined as a process or situation in which a species, family, or other taxonomic group of living organisms such as animals or plants become extinguished, destroyed, exterminated or dead.
This ultimately implies that, extinction literally means the extermination or dying out of a species, family, or other taxonomic group of living organisms.
Basically, the extinction of living organisms is mainly caused due to the effect of environmental forces and evolutionary changes such as:
Habitat fragmentation.Poor reproduction techniques.Natural disasters.Overexploitation of species by humans such as the hunting and overfishing of wildlife.Genetic inbreeding.An introduction of invasive species into natural habitats by humans.The artificial draining and filling of wetlands.In conclusion, the disruption which isn't a major cause of a high extinction rate is the use of animals or plants in scientific research and experiments because often times they are not killed and only a sample of the population is used.
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What are the components of adenosine triphosphate (ATP)?
sugar + three phosphates
adenosine + one phosphate
base + three phosphates
base + sugar + three phosphates
Answer:
base, sugar and three phosphates
Some types of aquatic frogs bury themselves in the mud and spend the winter hibernating at the bottom of lakes and ponds. Which characteristic of life does this behavior represent?
Answer:
defence
Explanation:
they try to save their territorythey bury them in mud to camoufalgeA carbohydrate found in bread and pasta:
Answer:
yes
Explanation:
yes they are found in bread and pasta
Which two characteristics are used to classify stars on the Hertzsprung-Russell diagram?
size and density
density and composition
composition and temperature
temperature and absolute brightness
Answer:
Temperature and absolute brightness
Explanation:
The X-Axis of the diagram is heat, and it actually goes down in heat.
The Y-Axis is for brightness, and it works like a regular axis, meaning as it goes up, the number or unit of some sort, in this case luminosity, goes up.
Two characteristics are used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness
What is the Hertzsprung-Russell diagram?The Hertzsprung-Russel diagram or HR diagram is a graphical tool using a scatter plot used by astronomers to classify stars according to their:
luminositycolor temperaturespectral typeHere, The HR diagram plots as either
the temperature of the stars versus the luminosity OR the color of stars versus absolute magnitude.Therefore two characteristics used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness(Luminosity)
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Can any kind soul help me ASAP
11. D
12. C
13.
14.
15.
thats all I know, hope it helped
Match each scientist to the observation she is most likely to make
A ____ is the basic unit of structure and function of living things.
Answer:
Cell
Explanation:
A cell is the basic unit of structure
Answer:
Cell
Explanation:
The answer is a cell. Cells are the building blocks of the living.
What atom exists in all macromolecules
carbon, the fundamental component for all the macromolecules.
PLEASE HELP ME ANSWER THIS AS FAST AS POSSIBLE PLEASE!!!!!
Answer:
i think its a tissue
Explanation:
Sorry if i get it wrong