Answer:
Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that
Explanation:
CRITICAL THINKING
Precursors of an animal germ cell has 12 ng of DNA in it G1 phase what would be amount of dna in
its each daughter cell immediately after meiosis?
A.24 ng
B. 12 ng
C. 6 ng
D. 3 ng
Answer:
Option D. 3ng
Explanation:
hope it helpss
How are the lysogentic and lytic cycles different?
The lysogenic cycle involves the spread of viral DNA when prokaryotic microorganisms reproduce and the lytic cycle destroys the host cell immediately.
What is the lytic cycle?The lytic cycle is a type of reproductive cycle in viruses that involve the destruction of the host cells.
Conversely, the lysogenic cycle occurs only in prokaryotic cells and it does not involve the destruction of these cells.
In conclusion, the lysogenic cycle uses prokaryotic reproduction and the lytic cycle destroys the host cell.
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A scientist uses material in her lab to cut a DNA sample into fragments.What process is the scientist using
Answer:
The digestion of DNA by restriction emzymes.
Explanation:
When a total lunar eclipse happens, the Moon is in the Earth's:
penumbra shadow
umbra shadow
A long-haired black rabbit male mates with a female bunny that is short haired with a black coat assume the mail is pages for the black hair color and the female is heterozygous for both traits what are the genotypes and phenotypes of the offspring from this cross
As the male is long-haired with a black coat means genotype Bbss and the female is having short hair and black coat means genotype BbSs. The offspring genotype can be BBSs, BBSs, BbSs, and bbss.
What is a genotype?In a broad sense, the term "genotype" refers to an organism's genetic makeup; in other words, it describes an organism's entire set of genes. In a narrower sense, the term can refer to the alleles, or variant forms of a gene, that an organism carries.
Black hair in rabbits is determined by a dominant allele, B, and brown hair by a recessive allele, b. Short hair is caused by a dominant allele, S, whereas long hair is caused by a recessive allele, s.
The Punnett square for the given scenario can be shown in the image attached below:
Thus, these can be the genotype of the offspring.
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Question 10
What are some general characteristics of chondrin that make
it adaptive to the function of cartilage?
Answer:
Like hyaline, elastic cartilage also has single or multiple chondrocytes housed within spaces called lacunae. The extracellular matrix of elastic cartilage contains higher levels of type II collagen.
A hairdryer uses 1500 J of electrical energy in 1 second. The hairdryer changes 1300 J of this to useful thermal energy in 1 second. Calculate the quantity of energy that is wasted by the hairdryer in 1 second. Show your work.
200 J of energy is wasted by the hair dryer.
Steps
The hairdryer is provided with 1500 J of electrical energy per secondOf this 1500 J, 1300 J of energy is actually used and converted to useful thermal energy per secondThe remaining energy, 1500 - 1300 = 200 J is dissipatedDissipated energy
The energy that is not efficiently transported or changed is wasted energy. We cannot create or destroy energy. An employable type of energy is created through transformation. Only a portion of energy that is changed or transferred can be done so in a way that is helpful.Thus, 200 J of energy is wasted by the hair dryer.
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which would not be a good way for you to reduce your enviromental foot print
Match each biodiversity restoration method to its description.
tiles
reforestation
biological augmentation
bioremediation
Chart
using plants to control a native plant population
using plants to absorb harmful compounds
using plants to increase biodiversity and food resources
Match each biodiversity restoration method to its description we have:
reforestation: using plants to absorb harmful compoundsbiological augmentation: using plants to control a native plant populationbioremediation:using plants to increase biodiversity and food resourcesWhat are ecological restoration techniques?Some examples of induced ecological restoration methodologies are the conduction of natural regeneration, nucleation techniques, enrichment or diversity planting, among others.
In this case, the ecological restoration techniques are:
reforestation: using plants to absorb harmful compoundsbiological augmentation: using plants to control a native plant populationbioremediation: using plants to increase biodiversity and food resourcesSee more about ecological restoration at brainly.com/question/1331136
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Answer:
using plants to control a native plant population- Biological Augmentation
using plants to absorb harmful compounds- bioremediation
using plants to increase biodiversity and food resources- reforestation
Explanation:
Just did the edmentum test and this is correct
A group of researchers was investigating the changes in the population of land animals in India over a period of 30 years. They noted a decrease in the population of land animals over time. Which of the following factor(s) is/are most likely to have caused a decrease in the population of these animals?
A: deforestation
B: increased sunlight
C: introduction of other animals
Answer:
A
Explanation:
mainly because the more people that build homes in the areas where the aniamls lives the more trees gets cut down leaving the animals with no homes so the leave.
The correct answer is (A). Deforestation.
What do you mean by deforestation?Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests.
Moreover, deforestation is the purposeful clearing of forested land. Throughout history and into modern times, forests have been razed to make space for agriculture and animal grazing, and to obtain wood for fuel, manufacturing, and construction. Deforestation has greatly altered landscapes around the world.
Hence, the loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for Indigenous people.
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What are the phases in meiosis and explain
Cell division happens twice during meiosis. One starting cell can produce for gametes (eggs or sperm.) In each round of division, cells go through four phases called prophase, metaphase, anaphase, and telophase.
prophase During prophase the chromosomes become visible as paired chromatids and the nuclear envelope disappears. This phase includes reduction division, which is where the number of chromosomes is decreased from 46 (diploid) to 23 (haploid.)
metaphase This is where the 23 remaining chromosomes become attached to the spindle fibers.
anaphase During this phase, the chromosomes move away from each other to one or the other pole of the spindle fiber.
telophase In which the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.
interphase This is a resting period.
What if the surface of a bacteria cell was not very antigenic? What would this mean for the host
If the surface of a bacteria cell was not very antigenic then it can enter host cells and eventually cause harm.
What is an antigen?An antigen is any molecular structure present in a pathogenic organism (e.g., bacteria) that can be detected by the immune system.
Antigens usually bind to antibodies that are able to bind specific antigenic features and thus trigger a concomitant immune response.
In conclusion, if a bacteria cell was not very antigenic then it can cause harm.
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Mendel used over 28,000 pea plants in his experiment. How does this large sample size make his results more reliable?
Answer:
When u have a larger population at hand the chances of your predictions being right are higher.
What is the difference between moons and dwarf planets?
A - dwarf planets orbit the Sun
B- Moons orbit the Sun
C- dwarf planets orbit other planets
D- moons orbit asteroids
Answer:
A- dwarf planets orbit the sun
Dwarf planets orbit other planets. Therefore, option (C) is correct.
The primary distinction between moons and dwarf planets lies in their respective orbits. Moons are natural satellites that encircle planets, whereas dwarf planets directly orbit the Sun. Moons are celestial entities that revolve around larger planets, functioning as their satellites. A notable illustration is the Earth's moon, which is a natural satellite revolving around the Earth.
Conversely, dwarf planets are celestial bodies that orbit the Sun but have not successfully eliminated other debris from their orbital paths, in contrast to fully recognised planets. Pluto serves as a prominent example of a dwarf planet within our solar system. While it orbits the Sun akin to a planet, it also shares its orbit with other objects situated in the Kuiper Belt. Therefore, option (C) is correct.
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Whats the correct answer answer asap for brainlist
Which of the following pieces of fossil evidence supports the theory that the continents were once joined?
A. Fossilized coral has been found in places that are cold today.
B. Fossils of dinosaurs have only been found in North America.
C. Fossils of identical seed ferns have been found in South America, Australia, and India.
D. Human fossils have been found on several continents.
How do acacia trees communicate with each other in response to insect attack?
O They produce a gas called ethylene.
O They drop their leaves.
O They release pollen.
O They produce thorns and spines
Acacias communicate with each other in response to insect attack by producing a gas called ethylene.
How do acacias communicate?When antelopes begin to eat the leaves of an acacia tree, the tree emits a signal of ethylene gas into the air through the pores of its leaves. This signal can travel up to 45 meters warning other nearby trees of the presence of herbivores. Once the signal is received, acacias begin to produce tannin in their leaves in amounts that are lethal to antelopes.
With this information, we can conclude that Acacia trees, when eaten by grazing giraffes, release ethylene gas, which prompts other acacias to flood their leaves with bitter tannins.
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The use of DNA in the process of classifying organisms is known as.
A. DNA forensic analysis.
B. molecular systematics.
C. DNA D. electrophoresis. molecular biochemical analysis.
Mr. Devereaux's students were in science lab trying to identify biomolecules: carbohydrates, fats and proteins. During the lab experience, Assistant Principal Haskins came in to evaluate the teacher and the learning environment. Ms. Haskins reacted positively to the fact that the students were conducting a hands-in investigation, but she reacted negatively to the overall classroom environment. Take a look at one lab group. Justify Ms. Haskins' concern. What procedures should Mr. Devereaux have followed before the lab began?
Your teacher will probably go over the lab procedures with you and your classmates before you lead an experiment.
You will often receive a printed guide that describes the experiment in depth in addition to verbal instructions, frequently with pictures and drawings.
It's important to pay attention as your teacher goes over the directions so you can complete the experiment correctly and securely when class starts.
What precaution should we take while experimenting in lab?Be careful when handling chemicals, reagents, and stains, and heed all instructions. The contents and any potential hazards are listed on the labels of all bottles and containers. Avoid contact with the chemical and fumes, for instance, if the label instructs you to.
Your teacher will probably go over the lab procedures with you and your classmates before you lead an experiment.
You can keep yourself safe in the lab with the appropriate clothing and tools. Depending on the experiment, your teacher should provide you with particular directions on what to wear to each class as each one calls for the use of various tools and substances that have varying degrees of hazard.
Though they are not something you should be preoccupied by, as mentioned above, accidents in school laboratories are rather common. Your teacher should review with you what safety equipment your lab contains.
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green plants help to balance the environment why
Answer:
In my opinion ans :;because they release oxygen to atmosphere ,they absorb carbondioxide and regulate water cycle
Answer:
green plants help to balance the environment because it help to maintain the amount of oxygen and carbon dioxide in air
Why can't we see the Moon during the new moon phase? Select all that apply.
The Earth is between the Moon and the Sun.
The Moon is between the Earth and the Sun.
The Moon's lighted side is facing the Sun.
The Moon's dark side is facing the Earth.
A microscope has a low-power magnification of 200x and a high-power magnification of 1600x. If the low-power field diameter is 1.2 mm, calculate the high power field diameter in micrometers
The diameter of the high power field in micrometers is 9600 micrometer (9.6 mm).
[tex]\frac{200}{1600} =\frac{1,2}{x}[/tex] = 9,6 mm
What are microscope lenses?Compound microscope lenses are called objective lens and ocular lens. The objective lens is a lens that is installed very close to the object being observed. The ocular lens is very close to the observer's eye.
With this information, we can conclude that the high power field in micrometers is 9600 micrometer (9.6 mm).
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what is your favorite spongebob character? trying to get rid of points.
Answer:
sandy
Explanation:
Tristan wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Tristan most like?
The Golgi apparatus (body) is the organelle that is similar to Tristan's work.
What is the Golgi apparatus?The Golgi apparatus is an organelle responsible for transporting proteins and fats (lipids) in the cell.
The Golgi apparatus is also responsible of chemically modifying these transported proteins.
In conclusion, the Golgi apparatus is the organelle that work as Tristan.
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What are the three measures of life’s variations?
Answer:
What are three measures of life variations?
Species diversity, genetic diversity, ecosystem diversity
Explanation:
Biodiversity
The amount of biological or living diversity per unit area. It includes the concepts of species diversity, habitat diversity and genetic diversity.
I hope this helps and have a great day!
What happens during prophase?
A) chromosomes are copied, and the nuclear membrane disappears
B) nuclear membranes form around two sets of chromosomes
C) spindle fibers pull the sister chromatids apart
D) chromosomes condense, and mitotic spindles form
Answer:
d
Explanation:
During prophase, the chromosomes condense and centrosomes move to opposite sides of the nucleus, initiating formation of the mitotic spindle.
What are reactants in the process of photosynthesis
Answer:
here is your Answer.
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants .
Answer:
carbon dioxide and water are the reactants in the process of photosynthesis
Explanation:
All animals are
a. polytrophs
b. heterotrophs
c. autotrophs
d. biotrophs
All animals are heterotrophs
This means that all animals cannot produce their own food by themselves but depend on other organisms for food.
What is heterotrophic nutrition?Heterotrophic nutrition is a special type of nutrition in which animal depends on other organisms for food substances.
Animals which feed or depend on other organisms for food are known as heterotrophs.
So therefore, all animals are considered heterotrophs
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Column 1 would be on the x-axis, and Column 2 would be on the y-axis. Which best lists the titles of each column?
Column 1 should be titled “Time,” and Column 2 should be titled “Velocity.” Thus, option "A" is correct.
What is velocity & speed?
Speed is the time pace at which an object is rolling along a path, while velocity is the pace and direction of an object's movement.
Thus, option "A" is correct.
Column 1 would be on the x-axis, and Column 2 would be on the y-axis. Which best lists the
titles of each column?
Column 1 should be titled “Time," and Column 2 should be titled "Velocity.”
Column 1 should be titled "Velocity," and Column 2 should be titled “Time."
Column 1 should be titled "Time," and Column 2 should be titled "Acceleration."
Column 1 should be titled "Acceleration," and Column 2 should be titled “Time."
93
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Which of the
following is a
form of
electromagnetic
radiation?
A. sound
B. light
C. gravity
D. strong nuclear
force