Answer: The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
11. What are cell cycle regulators?
Answer:
A conserved set of cyclin-dependent protein kinases (Cdks) initiate or regulate events through phosphorylation of intracellular proteins, thus controlling cell cycle progression, terminal differentiation, and apoptosis. ...
Explanation:
The cell cycle regulators are cyclins, CDKs, and CDK inhibitors as well as some of their substrates, interaction partners, and upstream regulators.
What is a cell?
The smallest unit of life is a cell. There are biomolecules in it. Every living thing is composed of several cell units. Different sorts of creatures contain various types of cells.
Prokaryotic cells are the most basic types of cells; they are only seen in unicellular organisms, do not engage in cell division, and lack real cell organelles and a nucleus, instead having DNA coiling up in the cytoplasm.
Eukaryotic cells are higher cells that contain cell organelles and have the capacity to carry out a variety of intricate tasks required by big organisms.
Thus, Cell signaling is a method of communication between or within cells, and a change in a cell's activity is conveyed as a signal that may set off a chain of events so that the body can respond appropriately.
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My dog whom I've had since before I was born is about to die. Does anyone have any help or tips? Thank you so much for helping. This means a lot.
Answer:
spend as much time with your loyal pet
Explanation:
make them feel safe and comfortable since it is their last moments on earth. cherish them. hope everything turns out fine for you
Answer:
sorry i though you said she or he die you have to make that last times with he or she the best ones
Explanation:
Select the correct answer from each drop-down menu. Bile juices help in the breakdown of fats. An injury to the may cause a decrease in the production of bile juices. This decrease in bile juices may lead to decreased production of .
Answer:
Decreased production of energy.
Explanation:
Decrease in bile juices may lead to decreased production of energy from eating of food having fats because our body has no ability to absorb fat-soluble vitamins and fatty acids. Bile juices is responsible for the absorption of fat-soluble vitamins and fatty acids which is then transported to the cell for producing energy that is required by our body for different processes. Fats have more energy than carbohydrates and protein so if there is no bile juices are present so it break down does not occurs.
Answer: A and C
Explanation:
PLEASE HELP!!
Which sector creates the most fossil fuel emissions?
agriculture
transportation
electricity generation
industry
Answer:
transportation
Explanation:
Transportation (28.2 percent of 2018 greenhouse gas emissions) – The transportation sector generates the largest share of greenhouse gas emissions.
hope this help
What term do sociologists use to describe when people act together?
A. Comradeship
B. Compromise
C. Chaos
D. Collectivity
Answer:
d
Explanation:
Sociologists study human behavior, organization, and interaction. They monitor the operations of social, religious, political, and economic institutions and groups. Collectivity is the term that sociologists use to describe when people act together.
What comes under sociology?Sociology is the study of social life, social change, and the social causes and consequences of human behaviour.
Sociologists look at how people interact in groups, organizations, and communities.
The term that sociologists use to denote the act of people together is collectivity.
Thus, the correct option is D.
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Which do solar flares and coronal mass ejections have in common? Select the two correct responses.
A. They appear as dark spots on the sun's surface.
B. They tend to occur during minimum points in the solar cycle.
C. They are caused by the sun's changing magnetic field.
D. They are explosive events that can affect Earth.
C. They are caused by the sun's changing magnetic field.
D. They are explosive events that can affect Earth.
Explanation:
I'm sorry if it is wrong but I am almost 100% that it is correct!
Have a good one!
The solar flares and coronal mass ejections are caused by the sun's changing magnetic field. Also they are explosive events that can affect Earth. The correct options are C and D.
What is solar flare?A solar flare is a massive explosion on the Sun caused by the sudden release of energy stored in 'twisted' magnetic fields.
However, not all solar flares are safe. While the Earth's magnetic field protects us from solar radiation, the sheer electromagnetic power of a flare disrupts power grids, internet connections, and other communication devices.
Ejections occur at varying rates depending on the phase of the solar cycle, ranging from about 0.2 per day near the solar minimum to 3.5 per day near the solar maximum.
Coronal Mass Ejections are large plasma and magnetic field expulsions from the Sun's corona.
The sun's changing magnetic field causes solar flares and coronal mass ejections. They are also explosive events that can have an impact on Earth.
Thus, the correct options are C and D as per the given scenario.
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What is herd immunity, and why are vaccines important for achieving herd immunity?
Answer:
Herd immunity is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby reducing the likelihood of infection for individuals who lack immunity.
Explanation:
Vaccines create immunity without causing illness or resulting complications. Herd immunity makes it possible to protect the population from a disease, including those who can't be vaccinated, such as newborns or those who have compromised immune systems.
which statement best describes the organization of the taxa shown in the image
A. as you move down the structure, the groups become more general
B. there are more organisms in each group as you move down the structure
C. as you move up the structure the group becomes more specific
D. as you move down the structure, there are fewer organisms in each group
Answer:
D. as you move down the structure, there are fewer organisms in each group.
Explanation:
When we move down from kingdom to species, the number of organisms decreases because more closely related organisms are placed down the group. There are fewer kingdoms that have a large number of organisms in it and has less similarities among them and when we move down, the number of organism decreases in number and at the end there are few organisms are present in it which is more closely related to each other.
The highest level of organization in an organism is
Answer: The biosphere
Explanation:
Answer:
Biosphere
Explanation:
because it encompasses all the other levels and also the biological levels of organisation of living things . Hope it is helpful and have a good luck
What is the difference between between pulmonary artery and pulmonary vein? (I will mark you as brainleist)
The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)
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Couples who both have normal colour vision and have a child with colour blindness. Explain how this may happen, and state that the sex of the colour blind child must be.
Please help me
Answer:
Im not sure what state but that is my reason
Explanation:
Maybe it has to do something with there gens or someone eles in there family ahd it and maybe it just got passed down to the baby instead of the parents i hate to say this but sometimes that happens.
please answer ill give brainly
PLS HELP! A single celled organism that lives in extremely hot or acidic environment with no membrane-bound organelles most likely belongs to
1. archaea, bacteria, and eukarya
2. archaea and bacteria
3. archaea only
4. bacteria only
Answer:
i thinks its 4 but i am not that positive
A single celled organism that lives in extremely hot or acidic environment with no membrane-bound organelles most likely belongs to archaea, bacteria, and eukarya. Thus, the correct option is 1.
What are Single-celled organisms?A unicellular organism is also known as a single-celled organism. It is an organism which consists of a single cell, unlike a multicellular organism that consists of multiple eukaryotic cells. Organisms fall into two major categories including prokaryotic organisms and eukaryotic organisms.
All of the life forms can be divided into three major domains, based on the type of cells of the organism into
a. Bacteria: These cells do not contain a nucleus.
b. Archaea: These organisms do not contain a nucleus, however they have a different cell wall from bacteria.
c. Eukarya: These cells contain a well-defined nucleus
Therefore, the correct option is 1.
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why is it important that your goals should be measura
ble
Answer:
Measurable goals are important in order to clearly identify exactly what it is you want to achieve and when the goal has been achieved. Having a measurable goal can improve excitement and motivation, because you know when you've reached your destination and achieved the goal.
Explanation:
Explanation:
Measure able goals helps you define exactly what you want to achieve in the future.What is a tree that produces cones called
Answer:
Conifers are trees that produce cones to protect their seeds.
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!
How are a tundra and a desert different?
A) A tundra has a lot of precipitation and a desert has little.
B) A tundra has few trees and plants and deserts have many.
C) A tundra has soil that is often sandy and a desert has grass.
D) A tundra is dry and cold and a desert is dry and hot.
Answer:
D
Explanation:
i think that's the answer
Answer:d
Explanation: tundra is an extremely cold biome consisting of snow-covered lands while a desert is an extremely dry and hot biome consisting of sandy lands
A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of
A. 0.04.
B. 0.25.
C. 0.50.
D. 0.75
Answer:
C. 0.50
Explanation:
Since 900 is 1/2 of 1,800, it happens half of the time so the probability is 0.5
hope this helps chu <3
Why are dark colored pocket mice found in the dark, rocky areas of the desert?
their fur is that color so they can camoflaugue with their surroundings
Answer:
Because God put them there on purpose. For example, they could hide in little tunnels in the ground to hide from predators, and also, so it could camoflauge with it's surroundings. Have a great day!
Explanation:
(:
What distinguishes the brain from the spinal cord?
Answer:
The brain controls voluntary processes.
Explanation:
The brain and the spinal cord are both parts of the central nervous system, but the spinal cord controls only involuntary processes.
Why do smokers find it harder to give up smoking?
Answer:
Nicotine is the main addictive drug in tobacco that makes quitting so hard
Answer:
It is hard for them because that's what makes them feel better and that is what the want each time they are stressed or they can even smoke 20 times in a hour.
Explanation:
Hope i helped :)
When the solution contains the same number of particles as what’s in the cell ______________
Answer:
isotonic solution
Explanation:
HELP ME!! Do you think we should build von Neumann Machines if we have the necessary capabilities? What instructions should we give them if we do?
Answer:
Explanation:
Control Unit retrieves data and instruction in the same manner from one memory. Design and development of the Control Unit is simplified, cheaper and faster. Data from input / output devices and from memory are retrieved in the same manner.
What role did the Yam play in the expansion of the Mongol Empire?
Answer:
The yam was the cornerstone of Mongol administration and allowed the Great Khan to run one of the largest empires in history.
Explanation:
Answer:
The yam was the cornerstone of Mongol administration and allowed the Great Khan to run one of the largest empires in history.
Explanation:
that is your answer, have a great day!
PLEASE HELP!!
Which of the following is a problem caused by acid rain?
is responsible for smog
damages limestone and marble on statues and buildings
is a CFC that causes destruction of ozone
can cause burning sensation in the eyes and respiratory problems
Answer:
It damages limestone and marble on buildings and statutes.
Can cause burning sensation in the eyes and respiratory problems.
Explanation:
Why are trees generally measured at 4 feet, six inches feet from the ground?
Answer:
Trees are generally measured at 4 feet, six inches feet from the ground because trees are generally a bit wider at the bottom where the roots begin to spread, so choosing a point at which all trees are measured is one way to keep documentation consistent. 3.
Explanation:
Answer:
Because trees are generally a bit wider at the bottom, where the roots spread
Explanation:
Deoxyribose (sugar), a phosphate group, and a nitrogen base make up these repeating units of DNA: * Adenine, Nucleotides, Guanine or sMitochondria
Answer:
in DNA. Adenine (A) and guanine (G) are double-ringed purines, and cytosine (C) and thymine (T) are smaller, ... The nucleotide is named according to the nitrogenous base it contains. (a) Each DNA nucleotide is made up of a sugar, a phosphate group ... A figure showing the structure of ribose and deoxyribose sugars.
Explanation:
Before a cell divides, it makes a copy of its genes during
Bedford a cell divides, it makes a copy of its genes during interphase
What is modified poliovirus?
Explanation:
Poliovirus, the causative agent of polio (also known as poliomyelitis), is a serotype of the species Enterovirus C, in the family of Picornaviridae.
What tool do meteorologists Use to analyze particle movement within storms?
c) Describe the phenotype ratio for their offspring. (2 points)