etermine the amount of rock left for the following isotopes:
a) Carbon-14 has a half life of 5,730 years. A fossil sample taken from the Earth shows that
a sample that started with 850 g of C-14 now has 53.125 g. How old must this organism
be?

Answers

Answer 1
Carbon 14 will go through 4 “half lives” in order to go from 850g to 53.125g. This means that Carbon 14 will be 22,920 years old.
*In order to find the mass of a half life we just divide the mass by 2 to get its half.

Related Questions

The testes and ovaries both release the hormone testosterone. Please select the best answer from the choices provided T F.

Answers

Testosterone is a hormone that regulates puberty, function and the development of the male and female organs. The testes and ovaries both release the hormone testosterone.

What is the role of testosterone?

In males, the Leydig cells of the testis and in females, the ovaries produces and releases the hormone testosterone. Also, some amount of the hormone is released by the adrenal gland.

It is major reproductive growth, functioning and stimulating hormone that is also responsible for the physical development of the organism during puberty.

Males have high levels of this hormone as females as they are essential for sperm development and some male physical characteristics.

Therefore, the statement is true.

Learn more about testosterone here:

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11. Make a checklist for
a client to use to
determine normal and
abnormal behaviors of a
pet. Include & label
behaviors that require an
owner to seek veterinary
attention.

Answers

Veterinarians have a great opportunity to save pets’

lives by recognizing that behavioral medicine is as

important as any other field of veterinary medicine,

and can routinely be incorporated into each veterinary

visit. Because most veterinarians never received education in veterinary school about feline behavior, and do

not have the time and resources to study all the latest

research and develop behavior protocols, the panelists

have worked to develop a concise, updated and “user

friendly” document that can be easily implemented.

The guidelines include the following information:

• Emphasis is on prevention, from pre-adoption or the

first veterinary visit, through senior life. Preventing

behavior problems should be an important part of total

wellness care. A list of behavior questions intended for

inclusion in the medical history questions used at each

appointment is provided to aid in early detection and

intervention of behavior problems.

• An outline is provided for guidance regarding how to

create realistic expectations about living with a cat. This

will encourage cat owners to provide positive outlets to

allow normal behavior, but in ways that clients will consider acceptable.

• Several of the appendices can be used for both prevention and treatment and can be made into client

handouts; these will delegate client education to the

veterinary support team and be used to facilitate the

veterinarian’s role in client education.

• A developmental table specifying home and veterinary

care needed at different stages of life is included. This

can serve as an excellent poster or client information

handout to help clients understand their responsibilities for home and veterinary care.

• Detailed information on behavior and environmental

enrichment is included to help prevent many of the

most common behavior problems.

• Suggestions regarding prevention and treatment of

obesity, the most common consequence of domestication of cats, are provided.

• To help veterinarians better handle routine behavior

concerns (eg, inappropriate elimination) a rational first

approach to the problems seen day-to-day is included.

• Behavior counseling and treatment, including behavior

modification and environmental enrichment, are discussed in detail. For cats needing medical treatment,

important drug information including dosing and

tapering of medication is provided. Information on

where to refer if needed is also provided.

• Information is provided that will promote comprehensive, state-of-the-art, holistic care that incorporates

both the physical and psychological well-being of our

feline patients.

• These guidelines will help veterinarians raise client

awareness that they should turn to the veterinary profession for advice regarding behavior, just as they do

with any medical concerns.

What is the genetic code of life

Answers

The genetic code is a set of instructions that direct the translation of DNA into 20 amino acids, the basic units of proteins in living cells

POSSIBLE POINTS: 2
The image shows a nucleotide, a building block of the DNA molecule. Label the components of a nucleotide

Answers

The answers are:

The blue building block - Phosphate group

The grey building block - 5- carbon sugar

The green building block - nitrogenous base.

Outside the green building block - Adenine

Why is it necessary to have positive and negative controls in this experiment?

Answers

Answer:

It is necessary to have positive and negative controls in an experiment to ensure that the results are due to the independent variable.

Explanation:

I hope it will help you


i need an answer quick please

Answers

The first, second, and third one is the correct answer.

7. What do you think it means when you hear the phrase "an organism is adapted to its environment"?

Answers

Answer:

an organism adapted to its environment means the organism has features that'll help them live/reproduce in the environment they're located in. hope this helps (~ ̄▽ ̄)~

Explanation:

Question 35
1 pts
s
What is the main difference between natural selection and
selective breeding? in selective breeding
humans allow nature to control the reproduction of species
humans choose plants or animals for reproduction
the strongest will survive and have more offspring
the organisms with the most genetic variation will reproduce

Answers

Answer:

humans choose plants or animals for reproduction

Explanation:

This can be seen in the farming industry with livestock and crops alike. Crops are usually chosen for a genetic resilience (like to arid, dry areas) and are reproduced with intervention from humans. This doesn't happen in the wild, therefore it is natural vs the unnatural and purposeful human intervention.

Offspring that result from crosses between parents with different traits.

Answers

hybrids
The offspring of crosses between parents with different traits are called hybrids.

Which spheres attract each other with the least amount of gravitational force

Answers

Answer:

Mercury

Explanation:

Assuming that you are standing on the surface of the planet, Mercury, with a mass of 3.285 × 10^23 kg, has the lowest gravity. The radius of an object has no affect on the gravity.

A person starts to eat a hamburger. As she takes a bite and chews, an enzyme called salivary lipase helps to begin the process of fat digestion. Which of these is the BEST description of the role of enzymes in digestion?

Answers

Answer:

Role of enzymes in the human body

Explanation:

The chemical reactions that keep us alive - our metabolism - rely on the work that digestive enzymes do. They help to accelerate (catalyze) chemical reactions in the human body.

In some cases, they can cause a chemical reaction millions of times faster than they would without them.

Important functions of enzymes:

Digestive enzymes help the body break down larger complex molecules into smaller ones such as glucose, so it uses them as fuel.

Every cell in our body contains DNA. Each time the cell divides, this DNA must be copied. The process is called DNA replication . Enzymes help in this process by developing the DNA helix and copying the information.

Liver enzymes break down toxins in the body.

Enzymes are especially needed for respiration, digestion, muscle and nerve function, among other important roles.

Answer:

C. Enzymes are proteins that speed up the process of chemcially breaking down food molcules.

Explanation:

How are the nucleotides in dna different from those found in rna?.

Answers

The structural difference between nucleotides rests in two instances: A DNA nucleotide contains deoxyribose sugar, whereas an RNA contains the sugar ribose in every nucleotide. ... Unlike DNA, RNA contains a uracil nitrogenous base instead of thymine.

Explain how mountain ranges might be affected by Deposition.

SCIENCE

Answers

Answer:

It effects it because there's a possibility it can reduce the mountains to a smaller structure (breaking down), like a plateau, which would for sure leave a change in the landforms

Explanation:

~Cornasha_Weeb

When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of.

Answers

Answer:

hope it helps

Explanation:

density dependent inhibition

What do the polar bears, reindeer, and shrubs that live in a single area make up? organism population community ecosystem.

Answers

Answer:

Ecosystem

Explanation:

It would be a ecosystem because the animals live together to make a liveable enviornment like a food chain. And all the organisms can sustain itself.

Answer:

ecosystem

Explanation:

Summarize the steps of glycolysis using the key terms ATP, ADP, NAD+, NADH, glucose, and pyruvate.

Answers

Explanation:

LOOK AT THE FLOW CHART

IT MIGHT HELP U OUT

In this question we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

Steps of glycolysis

1st stage

This step, also known as the preparatory phase or investment phase, consists of five reactions:

1. Phosphorylation of the glucose molecule occurs, in which it receives phosphate from the ATP molecule, forming glucose 6-phosphate;

2. The glucose 6-phosphate molecule undergoes a rearrangement and forms fructose 6-phosphate;

3. Another ATP molecule supplies phosphate to the fructose 6-phosphate molecule, giving rise to fructose 1,6-diphosphate;

4. The fructose 1, 6-diphosphate molecule undergoes a rearrangement, with the opening of its benzene ring, giving rise to two molecules with three carbons each: glyceraldehyde 3-phosphate and dihydroaxethone phosphate;

5. The dihydroaxethone molecule undergoes a rearrangement giving rise to another glyceraldehyde 3-phosphate molecule.

It can be seen that at the end of this first phase, there was only energy expenditure, with the conversion of two ATP molecules into ADP.

→ 2nd stage

This stage, also known as the profit or energy compensation stage, involves energy gain and also consists of five stages, described below:

6. Two molecules of NAD+ (nicotinamide dinucleotide and adenine) are reduced to two molecules of NADH with electrons from the oxidation of glyceraldehyde 3-phosphate to 1,3-diphosphoglycerate;

7. Each molecule of 1,3 – diphosphoglycerate yields a phosphate to one molecule of ADP, thus giving rise to two molecules of ATP and two molecules of 3 – phosphoglycerate;

8. A rearrangement of 3 – phosphoglycerate molecules occurs, forming 2 – phosphoglycerate;

9. The 2 – phosphoglycerate molecules lose a H2O molecule, giving rise to phosphoenolpyruvate;

10. Phosphoenolpyruvate molecules provide a phosphate to an ADP molecule, yielding two ATP and two pyruvate molecules.

With this information, we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

Learn more about glycolysis in brainly.com/question/10886602

Green algae are divided into two main groups, the charophytes and the __________.

Answers

Answer:

The green algae are subdivided into the chlorophytes and the charophytes.

Explanation:

Which protists can reproduce s3xually?
A. volvox and amoeba
B. euglena and amoeba
C. volvox and paramecium
D. euglena and paramecium
NEED THE ANSWER ASAP

Answers

Answer:

amoeba and eulgene is the answer

I believe B. Euglena and Amoeba is the correct answer

Which types of dietary fats can increase blood ldl concentrations ?.

Answers

Answer:

saturated and trans fat can increase blood concentration

Abiotic factors in an ecosystem might include one or more of the following: Question 4 options: Slug, ants, coyote, birds, armadillo, trees, grass, flowers and moss Air, water, soil, rocks, and fish Air, water, soil, and rocks Slug, ants, coyote, birds, and armadillo.

Answers

Answer:

abiotic basically means non-living organisms. therefore the answers are: air, water, soil & rocks

:)

This type of receptor, once bound by ligand, can change conformation to allow specific substances to flow down their concentration gradient. This type of receptor is referred to as ____________ . This type of receptor is not an enzyme itself, but is bound to a protein that can exchange GDP for GTP and then stimulate effector proteins, which are usually enzymes. This type of receptor is referred to as ____________ . This type of receptor is a transmembrane receptor. It has an extracellular domain that binds to ligand, and an intracellular domain that can directly phosphorylate other proteins. This is an example of ____________ . This type of receptor binds to hydrophobic ligands. This type of receptor is referred to as ____________ .

Answers

Answer:

Channel linked receptor

Coupled receptor

An enzymatic receptor

An intracellular receptor

Explanation:

Quizlet

A B-cell uses its surface antibodies as receptors to attach to specific antigens before they are taken in. By what mechanism does a B cell engulf an antigen

Answers

Answer:

[tex]\huge\boxed{\sf Endocytosis}[/tex]

Explanation:

B-cells engulf an antigen by endocytosis.

Endocytosis:

The process by which cell takes up external materials by fusing them with plasma membrane is called endocytosis.

After engulfing the antigen, B-cells become sensitive to the pathogen.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

A farmer has grown strawberries successfully for years in field A. He recently expanded the crop into previously unused land in fields B and
C. The yield from field B is comparable to A, but the yield from field C is inexplicably low. As a microbiome expert, what might you predict
about the soil of fields A, B, and C?

Answers

Given what we know, we can confirm that the soil in field C most likely lacks the presence of microbes that help plants grow or has a higher presence of microbes that are harmful to plant growth.

What does it mean for a microbe to promote plant growth?

This would mean that the microbe in question has a symbiotic relationship with plants. Meaning that it promotes plant growth in exchange for nutrients from the plant, and both organisms will benefit, similar to microbes such as AM fungi.

Therefore, we can confirm that the soil in field C is likely to lack plant symbiotic microbes that are most likely found in fields A and B.

To learn more about microbes visit:

https://brainly.com/question/13445025?referrer=searchResults

What evidence would help us determine whether hydroponic plant food, air, or water could be involved in a chemical reaction to make food molecules?

Answers

Answer:

We use a hydroponic plant system and indicators of food molecules to investigate whether soil, plant food, water, or air.

HOPE IT HELPS, BE SAFE :3

Mangrove pneumatophore roots _______. A. Prop the trees up above the water line b. Excrete excess salt c. Absorb carbon dioxide from the air d. None of the above Please select the best answer from the choices provided A B C D.

Answers

Mangrove pneumatophore roots absorb carbon dioxide from the air.

WHAT ARE PNEUMATOPHORES?

Pneumatophores, also called breathing roots, are types of roots possessed by mangrove plants.

Mangrove plants are adapted to swampy conditions, hence, must possess adaptational features that ensures their survival.

Pneumatophores help the mangrove plants to exchange gases like carbon dioxide and oxygen in the atmosphere.

Therefore, mangrove pneumatophore roots absorb carbon dioxide from the air.

Learn more about breathing roots at: https://brainly.com/question/18103568

Answer:

Its B

Explanation:

Just took test any nobody on here is right so i picked d and that not it so its b

Information from the taste buds travels to an area of the.

Answers

Information from the taste buds travels to an area between the frontal and temporal lobes of the brain. -It registers in an area not far from where the brain receives information from our sense of smell, which interacts with taste.

Information from the taste buds travels to an area of the frontal and temporal lobes of the brain.

What are taste buds?

Taste buds are present in the tongue. They are responsible for the taste of whatever we eat. Taste buds are of different types. Like bitter, sweet, salt, and sour. They are different taste buds and are present in the different regions of the tongue.

The frontal and temporal lobe of the brain is responsible for the taste of food and other things. The frontal lobe is present in the frontal part of the brain, and the temporal lobe is on the side of the brain above the ears.

Different lobes of the brain are responsible for different works of the body.

Therefore, the frontal and temporal lobes of the brain get information from the tongue.

To learn more about taste buds, refer to the link:

https://brainly.com/question/11962664

#SPJ2

How does the scientific method attempt to reduce observer bias when explaining natural phenomena?

Answers

Explanation:

The scientific method is focused on experiments to prove/disprove a hypothesis.

A number of experiments start with a question;example/ what caused mold to grow on human skin?

this is when u organize a "control group,"

( recieving a placebo, or told information they have to follow).

your second group, gets a medication or a scenario to prove the hypothesis is true or false.

once both sides document their findings, scientists discuss which one is true..

What are some characteristics of flowers that could attract the animals
that pollinate them?

Answers

Answer:

Many flowers use visual cues to attract pollinators: showy petals and sepals, nectar guides, shape, size, and colour. I personally think it is very cool how they know what to do to attract pollinators.

Explanation:

brainliest plz?

What does the information in DNA molecules provide instructions for?
a. Assembling amino acids into protein molecules

b. Assembling protein molecules into amino acids

c. Rearranging genes into protein molecules

d. Rearranging genes into traits

Answers

Answer: (B)

Explanation: DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Provide examples of biotic and abiotic factors that affect an organism's range.

Answers

Answer:

water air soil sunlight and minerals

Explanation:

The biodiversity and distribution of organisms within an ecosystem is due to both abiotic (non-living) and biotic (living) factors.

Other Questions
What are 3 examples of figurative language in this text?May this be the dayWe come together.Mourning, we come to mend,Withered, we come to weather,Torn, we come to tend,Battered, we come to better.Tethered by this year of yearning,We are learningThat though we weren't ready for this,We have been readied by it.We steadily vow that no matterHow we are weighed down,We must always pave a way forward.This hope is our door, our portal.Even if we never get back to normal,Someday we can venture beyond it,To leave the known and take the firststeps.So let us not return to what was normal,But reach toward what is next.What was cursed, we will cure.What was plagued, we will prove pure.Where we tend to argue, we will try toagree,Those fortunes we forswore, now thefuture we foresee,Where we weren't aware, we're nowawake;Those moments we missedAre now these moments we make,The moments we meet,And our hearts, once all together beaten,Now all together beat.Come, look up with kindness yet,For even solace can be sourced fromsorrow.We remember, not just for the sake ofyesterday,But to take on tomorrow.We heed this old spirit,In a new day's lyric,In our hearts, we hear it:For auld lang syne, my dear,For auld lang syne.Be bold, sang Time this year,Be bold, sang Time,For when you honor yesterday,Tomorrow ye will find.Know what we've foughtNeed not be forgot nor for none.It defines us, binds us as one,Come over, join this day just begun.For wherever we come together,We will forever overcome. Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 5 intervals. The minimum and maximum for the variable are -32.4 and 65.09 respectfully. Calculate the width of each interval for Bill. A. 13.018 B. 6.480 C. 19.498 D. -19.498 The main conflict between European colonists and Native Americans was over land. What principle refers to peaceful seizure of land that was considered to be underutilized by the indigenous people 2 to the 1st power times 30 NEED HELP! SCIENCE HW IS DUE IN 1 HOUR!!!!!!!!What type of changes are these and why?Ctting hair is a (physical/chemical) change.Cooking is a (physical/chemical) change.Ice cream melting in the sun is a (physical/chemical) change.Options for Reasons1. Change of state2. Changes what object is3. Causes a reaction (signifies chemicals change) I need help1.)how are shellfish different from finfish?2.)why is it important to know the difference between shellfish and finfish? 7 pounds of plums make 8 rolls of fruit leather. If every batch of fruit leather requires the same amount of plums, how many pounds of plums are required to make 20 rolls of fruit leather? HELP FAST PLS YOU GUYS Daniel and Saquon are each saving money.Daniel starts with $50 in his savings account and adds $8 per week.Saquon starts with $65 in his savings account and adds $5 each week.QUESTION: After how many weeks will Daniel and Saquon have the same amount of money in their savings account? Immediately after a forest fire, the primary consumers in the area will compete most for which biotic factor?FoodSpace (its for Science not social studies)OxygenSunlight (please hurry) A phone line runs east along a field of 1 miles and then north along the edge of the same field for 3 miles. If the phone line cost 3500 per mile to install, how much could have been saved if the phone line had been installed diagonally across the field? Which lines from the poem best expresses the speaker's attitude toward oppression?A"From awakening eyes in a black face " ( Line 2)B"I look then at the silly walls" ( Line 6)C"I look at my own body" ( Line 11)D"Then let us hurry, comrades" ( Line 15) Trina runs 4 laps around a park. each lap is 1/3 of a mile. trina wants to know how many total miles she runs oihyg8yib8yby8bybjnoniniob Nicotine is classified as a drug and absorbed into the bloodstream. True or false Which expression Is equivalent to x^2+10x+24 Which of the following is made of an element?RustA rosediamondBlue paintO None of these Find m CF44D5-52 Identify two words from the sentence that make the /oo/ vowel sound as in the word chew.It was Tuesday morning and Jake's mother was driving him to school. Marshall scored 80 on his first quiz and 70 on his second quiz. What was the percent of decrease in his scores?