Answer:
The correct answer is -
- 5,730 Approximately
- carbon-12 isotopes
- carbon-14 decays at this steady rate
Explanation:
Half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5,730 years so the Carbon-14 has a half-life of 5,730 Approximately .
As Carbon-14 unstable it is considered a radioactive isotope of carbon, carbon-14 will inevitably decay back to carbon-12 isotopes.
Radiocarbon dating is a method utilized by researchers to learn the ages of organic examples. It very well may be utilized on objects as old as around 62,000 years.
Radiocarbon decays gradually in a living being, and the amount lost is ceaselessly renewed as long as the living being takes in air or food. Since carbon-14 decays at this steady rate, an estimate of the date at which an organism died can be made by estimating the measure of its residual radiocarbon.
Can you see pores in the walls of diatoms?
Answer:
The simple answer is yes.
Explanation:
tudy the graph above. What does the region labeled “A” represent? Question 2 options: Activation energy with a catalyst Energy of the products Activation energy without catalyst Reaction progress
Answer:
A. Activation energy with a catalyst
Answer:
A
Explanation:
Compared with their counterparts in developed countries, individuals in developing nations typically have a
a
larger ecological footprint.
b
greater dependence on fossil fuels.
c
shorter life span.
d
higher standard of living.
Answer:b
Explanation:
How MDMA affects the synapses in the brain
Answer:
MDMA affects the brain by increasing the activity of at least three neurotransmitters (the chemical messengers of brain cells): serotonin,89,90 dopamine, and norepinephrine.91 Like other amphetamines, MDMA enhances release of these neurotransmitters89–92 and/or blocks their reuptake,93,94 resulting in increased neurotransmitter levels within the synaptic cleft (the space between the neurons at a synapse).
Answer:
MDMA increases levels of these neurotransmitters within the synapse
Explanation:
How do humans get carbon and how do we get rid of it?
Answer:
by breathing in..And breathing out.
Explanation:
our lungs take in oxegyn and breath out carbon dioxide
Define aseptic. What does the prefix ‘a-‘ or ‘an-‘ mean?
Answer:
opposite
Explanation:
The prefix “a-” almost always means that a word means the opposite of its base
True or False? Fiber can reduce cholesterol levels and risk of heart attack, and can also prevent constipation.
where would a pictograph not appear in a experimental outline
Answer:
somewhere on the outline
Answer:
Explanation:
Observations
give any one adverse effecteffect of green house effects?
Which state of matter will take both the volume and shape of the container that holds It?
Answer:
gases
Explanation:
in the gas phase the molecular forces are very weak
Which of the following are final destinations of proteins directed to the secretory pathway? ▼endoplasmic reticulum ▼mitochondria ▼the plasma membrane ▼the outside of the cell▼ the nucleus ▼the golgi apparatus ▼lysosomes A. TRUE B. FALSE
Answer:
False, the final destination is the outside of the cell
Explanation:
The secretory pathway moves proteins to the cell membrane, where they are released to the extracellular medium. In this pathway, the proteins enter into the membrane of the rough Endoplasmic Reticulum (ER) in a cotranslationally way (i.e., during their synthesis in ribosomes). This pathway can be summarized by the following transporter activities: Endoplasmic Reticulum >> Golgi apparatus >> secretory vesicles (such as lysosomes) >> cell membrane, where proteins are finally released by exocytosis.
What are five classes of protein found in prokaryotic cell membrane?
receptor proteins, transport proteins, resperatory proteins, binding proteins, attachment point proteins
Which is a reason why meiosis is important to sexual reproduction? Meiosis allows a zygote to grow in cell number. Meiosis doubles the chromosome number in each cell. Meiosis allows for the exact duplication of cells. Meiosis allows for genetic differences between parents and offspring.
Answer:Its b
Explanation:hope this helps
What are the errors in the table? Check all that apply.
ER should be in both animal and plant cells.
Golgi body should be in animal cells only.
Lysosomes should be in animal cells only.
Nucleus should be in plant cells only.
Ribosomes should be in plant cells only.
Vacuoles should be in both animal and plant cells.
Answer:
C
Explanation:
zombies is present only in animal
Which is an example of a herbivore?
A) fleas
B) hawks
C) bacteria
D) deer
Answer:
D
Explanation:
fleas feed on blood
bacteria eat decomposing flesh
hawks feed on rodents
Answer:
D) Deer
Explanation:
They eat plants
Which statement describes the structure of lipids?
O composed of chains of monosaccharides
O composed of long chains of amino acids
O composed of single or double strands of nucleotides
O composed of a glycerol molecule bonded to fatty acid molecules
The statement which says that it is composed of a glycerol molecule bonded to fatty acid molecules, it is the glycerol molecule which holds up together the fatty acid molecules. The statement that is correct is option D.
What is the functional group in the fatty acid ?Fatty acid is the bio molecule in which the functional group is the carboxylic acid.
In molecule of the fats, the molecules of the fatty acids are linked to each of three of the carbons of the glycerol molecule with the ester bonds through oxygen atoms. While ester bond is forming on, 3 molecules are being released. Since the fats are consisted of three fatty acids with the glycerol but they are called as triacyl glycerol as well or the triglycerides.
A glycerol with the 3 fatty acids are attached with are referred as triglyceride , that is a sub constituent of the lipids or fat. It is formed from molecules of the glycerol with 3 fatty acids. The molecules of the triglycerides are main energy storing molecules of body of the animals that is mainly stored inside the adipose tissue.
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How is mitochondrial DNA used in forensic science
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations.
Answer:
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations. Hope this helps
Pill bugs are placed in a container where they have a choice of a wet or dry environment. researchers record how much time was spent on each side.
Answer:
This question is incomplete; the complete question is as follows:
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side. What is the INDEPENDENT and DEPENDENT variables?
The independent variable is WET OR DRY ENVIRONMENT
The dependent variable is TIME SPENT
Explanation:
The independent variable in an experiment is the variable that the experimenter manipulates or changes in order to bring about an effect on the dependent variable.
Conversely, the dependent variable is the variable that the experimenter measures in an experiment. It is dependent on the independent variable.
In this question, the researchers placed pillbugs in containers that are either WET or DRY in order to measure how much time they spent in each side. Hence, the independent variable is the WET or DRY environment the pillbugs were placed because it is what the researcher changes while the dependent variable is the TIME SPENT because it is what the researchers measure.
Select the correct answer.
Robert owns a fertilizer manufacturing firm. His employees are constantly exposed to the hazards of the poisonous chemicals used for
manufacturing fertilizers. Robert makes sure that every employee of his firm follows a written document containing essential work practices,
procedures, and policies for employee protection from chemical hazards. Which document is Robert referring to?
Ο Α.
Occupational Safety and Health Act
OB.
Laboratory Standards
OC.
Health, Safety, and Environmental Policy
OD
Chemical Hygiene Plan (CHP)
Answer:
The answer is D.
Explanation:
I think the answer to this question is D because the employees are constantly exposed to poisonous chemicals. The Chemical Hygiene Plan (CHP) states " CHP is a written program stating the policies, procedures and responsibilities that protect workers from the health hazards associated with the hazardous chemicals used in that particular workplace."
Hope this helps!
Robert, who owns a fertilizer manufacturing firm have made some findings and these can be documented and referred as Chemical Hygiene Plan (CHP). Thus, the correct option is D.
What is Chemical Hygiene Plan?The Chemical Hygiene Plan (CHP) is a written program which states the policies, procedures, and responsibilities which protect the workers from the health hazards which are associated with the hazardous chemicals that are used in that particular workplace.
Chemical Hygiene Plan includes list of several things which are hazard identification strategies, hazard controls, equipment inspection and maintenance protocols, employee training requirements, medical consultation and examination, containment equipment, and the procedures which require prior approval.
Therefore, the correct option is D.
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What might be the effects on iron deficiency?
What is the purpose of the EIS?
Answer:
Purpose of an EIS An Environmental Impact Statement (EIS) is a document prepared to describe the effects for proposed activities on the environment. "Environment," in this case, is defined as the natural and physical environment and the relationship of people with that environment
Explanation:
Pelvic inflammatory disease commonly affects all of the following organs, except the:_________.
A) uterus.
B) ovaries.
C) urinary bladder.
D) fallopian tubes.
Answer:
C) urinary bladder
Explanation:
Pelvic inflammatory disease commonly affects all of the following organs, except the urinary bladder
Pelvic inflammatory disease commonly affects all of the following organs, except the urinary bladder. Option C is correct.
Pelvic inflammatory disease (PID) is an infection of the female reproductive organs. The most common cause of PID is a sexually transmitted infection (STI), such as chlamydia or gonorrhea. PID can also be caused by bacteria that normally live in the vagina.
The organs that are most commonly affected by PID are the uterus, fallopian tubes, and ovaries. The urinary bladder is not typically affected by PID.
Here are some of the symptoms of PID:
Pain in the lower abdomenFeverVaginal dischargePainful urinationBleeding between periods. Option C is correct.To know more about the Fallopian tubes, here
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How can a change to earth orbit affect earth climate apex
Answer:
Change over time
Explanation:
Do you playing video games after school affect a students grade
Answer:
No, exercising something you enjoy does not affect a student's grade, if it is controlled.
Explanation:
Playing a couple of hours a day (1-3 MAX) will not affect a student's grade, but excessive playing will affect their grade negatively, as the video game will stay on their mind unconciously (most of the time) which will distract the student and prevents the student from thinking straight, regarding the fact that it could cause eye damage, and increases the chances of epilepsy.
as letters are to English language, blank is/are to genetic information
What are observed and measured during an experiment; they are the experimental data
Answer:
Observation and measurements recorded during an experiment. All the variables that are kept the same throughout the experiment so they will not affect the results of the experiment. independent Variable. The variable which the experimenter changes so that he/she can observe the results of the experiment.
Something that transmits some, but not all, of the light that hits is called:
A. Opaque
B. Translucent
C. Transparent
Answer:
its B translucent
Explanation:
because opaque cannot and transparent all
the answer is translucent
Traditional Chinese Medicine relied on the practice of___
which uses needles for pressing into pressure points on the body
Answer:
acupuncture
Explanation:
pretty much the definition of acupuncture. acupuncture was used and is used to today to heal and relax the body.
J. J. Thomson concluded what from his experiment
Answer:
He discovered all atoms contain tiny negatively charged subatomic particles or electrons with cathode ray tubes.
Explanation:
Define monomer and polymer
Answer:
Monomer is a molecule that can be bonded to other identical molecules to form a polymer.
Polymer is a substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together
A monomer is a molecule that forms the basic unit for polymers, which are the building blocks of proteins
Polymer is a big molecule that forms from monomers, it consist of macromolecules (large molecules)