There are several ways for an archaeologist to determine the relative age of an ancient artifact on a dig.
The first one is relative dating. In this process, the archaeologist has to assume that the sites lower layers are assumed to be older than those that lie above them because of stratification. Assumptions can be wrong that is why it is not widely accepted.
The second one is carbon dating. It is one the most accurate and widely use dating techniques. The archaeologists use the amount radioactive carbon decay to determine the artifact's date.
There are other techniques as well like Thermoluminescence dating, and Dendochronology.
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Which of the following is a law?
A. an idea which cannot be disproven
B. an idea which has been disproven
C. an idea which has not yet been disproven
D. an idea that is supposed to be disproven
Answer:
C
Explanation:
HELP PLS!!!If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars?
Answer:
More sugars will be produced. ... Carbon dioxide does not affect the production of high-energy sugars in plants.
Explanation:
- What is the role of mRNA in expressing specialized structures?
F Making energy available for cellular activities
G Creating bonds to form biomolecules
H Producing sugars that assist with replication
J
Providing information to form proteins
Answer:J providing information to form proteins
Explanation:
The role of mRNA in expressing specialized structures is providing information to form protein. The correct option is J.
What is mRNA?Messenger ribonucleic acid is a single-stranded RNA molecule that equates to a gene's nucleotide makeup and is read by a ribosome during the protein polymerization reaction.
The function of mRNA is to transport protein details from the nucleus of a cell to the cytoplasm.
Here the protein-making equipment likes to read the mRNA sequence as well as translates each three-base codon into the corresponding amino acid in a burgeoning protein chain.
Messenger RNAs are single-stranded molecules that move genetic information from the nucleus to the cytoplasm, in which proteins are sequenced.
Thus, the correct option is J.
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What two enthalpic factors stabilize dna in double-helical form at low temperature?.
How many carbon dioxide molecules need to enter the Calvin cycle in order to produce one molecule of glucose?
A one
B three
C nine
D six
Answer:
d.) 6 CO2 molecules produce one glucose
Explanation:
Which of the following indicates that all organisms can be traced back to a common ancestry?
A. almost all genes in microorganisms plants and animals have the same codons
B. the genetic code consists of nucleotides and triplet codes
C. there are a few organisms that respond differently to the start and stop signals in the genetic code
D. microorganisms contain codons and anticodons
A proof of common ancestry of all organisms is that almost all genes in microorganisms plants and animals have the same codons.
What is evolution?Evolution refers to the gradual, cumulative and inheritable changes that occur in organisms over a long period of time leading to the formation of new species.
By means of evolution, all organisms which originated from a common ancestor were formed.
An indication of the fact that all organisms can be traced back to a common ancestry is that almost all genes in microorganisms plants and animals have the same codons.
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the region adjacent to the c-end of the inner gate in transient receptor potential melastatin 8 (trpm8) channels plays a central role in allosteric channel activation
Helppppp meeeeee pleaseeee this is due todayyyyy
Answer:
D.
Explanation:
Imagine the golgi is a post office the vesicles are the mail trucks
What percentage of the organisms reproduce asexually?
The questions are in the pic, they are about gravity :)
2. Because the gravitational force from anything that small compared to a planet is so minuscule it's nearly impossible to feel or measure.
3. Because do not have life and other processes necessary to create the gasses and substances necessary to create an atmosphere.
4. If the amount of mass lost was large enough it would likely allow the moon to eventually orbit away
Stories involving celebrities are more newsworthy than similar stories involving regular individuals.
А.
True
B.
False
Answer:
true
Explanation:
Answer:
B. False
Explanation:
A female client is on hormonal replacement therapy because of hormonal imbalance. Which disorders are more likely to appear in the client?.
A female client is on hormonal replacement therapy because of hormonal imbalance. The disorders more likely to appear in the client are Premenstrual dysphoric disorder and Medication-induced depressive disorder.
What exactly is premenstrual dysphoric disorder (PMDD)?
Premenstrual dysphoric disorder (PMDD) is a more serious version of premenstrual syndrome (PMS). PMDD causes severe irritability, depression, or anxiety a week or two before your period begins.
What is Medication-induced depressive disorder?Medications that cause mania or depression appear to alter brain chemicals in some way. Even if the drugs are required to treat the condition, the side effects are unacceptably severe. Accutane, a medication used to treat acne, has been linked to depression.
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systematically assessing natural compounds’ wound healing potential with spheroid and scratch assays
Systematically assessing wound healing assay is a laboratory technique that is used to study the cell migration and the cell to cell interaction.
This wound healing assay is also known as scratch assay because it is done by the doing a scratch on a cell monolayer and by capturing a image on regular intervals by time to time.
This wound healing is of 4 stages and that are homeostasis, inflammation, proliferation and remodeling.
Homeostasis is the self regulating process in which the organisms try to maintain stability.
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If a red fur male is crossed with a brown fur female, what percent of the offspring would have the genotype
Answer:
If the brown male had been BB, then all offspring would have been Bb and all brown. However, if the male is Bb as above and you perform a testcross, 50% of all offspring should have the bb genotype and a white phenotype. A testcross to a heterozygous individual should always yield about a 1:1 ratio of the dominant to recessive phenotype. So, both the genotypic and phenotypic ratios
Explanation:
20 points :)
How does the flame cell function in a planarian?
Select one:
a. Carbon dioxide is excreted by them through the mouth.
b. Cilia sweep water into excretory tubules.
c. Cilia sweep water out of the body.
d. Dissolved oxygen and nutrients are swept into the body by diffusion.
Answer:
Cilia sweep water into excretory tubules.
Explanation:
It function like a kidney, removing waste materials through filtration.
Hope it helps!
Plant cells contain organelles called ___. Filled with chlorophyll, they ___ radiant energy.
Answer: Plant cells contain organelles called chloroplasts. Filled with chlorophyll, they absorb radiant energy.
I hope this helps!
Answer:
chloraplasts; absorb
Explanation:
It's all part of photosynthisis.
SOMEONE PLEASE HELP T-T
Research and find a current map of the ocean floor. Considering only a small
portion has currently been mapped, what do you think new maps will look
like? What do you think will be found in the future? Explain your answer below.
Answer:
the new maps will have mountain like ridges and ravines. in the future scientists will find new animals and plants as they go deeper into the sea
as the lumbar and sacral nerves extend inferiorly beyond the end of the spinal cord, they form the .
The lumbar and sacral nerves extend inferiorly beyond the end of the spinal cord, they form the Cauda Equina.
What is Cauda Equina?
The cauda equina, a group of nerves near the end of the spinal cord, is so named because it resembles a horse's tail. The top part of the lumbar (lower back) spine is where the spinal cord terminates.
The separate nerve roots that provide the legs and bladder with motor and sensory function continue along the spinal canal at the spinal cord's extremity. These nerve roots continue in the lumbar and sacral region as the cauda equina. These nerves carry signals to and from the pelvic organs and lower limbs.
Cauda equina syndrome (CES) occurs when there is dysfunction of multiple lumbar and sacral nerve roots of the cauda equina.
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What type of cells are produced out of mitosis?
A) 4 diploid cells
B) 2 diploid cells
C) 2 haploid cells
D) 4 haploid cells
Answer:
B) 2 diploid cells
Explanation;
2 diploid cells is the type of cells that are produced out of mitosis.
What molecule is the source of the oxygen that is released as a byproduct of photosynthesis?.
Answer:
Water.
Explanation:
In the process of photosynthesis, water splits and creates hydrogen as well as oxygen within the individual process of water being oxidized.
Hope it helps.
What is the official term for "water jet" in a squid
Answer: Jet propulsion.
Explanation: A squid uses jet propulsion by filling its muscular mantle cavity (which is used to get oxygenated-water to their gills) with water and then quickly expel the water out of the siphon, just as a "water jet".
What is a major difference between Animalia and Plantar kingdoms
Answer:
Plantar: The cells of this kingdom contain cell wall.Plants don't have any locomotion.
Animalia: Animal cells do not have any cell walls. Animals have locomotion and they can move from one place to another.
Question 33
The recent increase in global temperature that is promoting a greenhouse effect is primarily due to
А
an increase in solar activity
B
volcanic eruptions
С
an increase in forest area
D
the burning of fossil fuels
D
by process if elimination
Phytoplankton are one of the most important parts of the food web in the Hudson River. What evidence supports this conclusion?
What is a characteristic that helps a living thing survive and
reproduce in a given environment called?
Answer: An adapation
Explanation:
Pick only ONE sentence Which sentence from the section shows why the right temperature is important for plants? (A) Temperature can also affect a plant (B) As with any living thing, a plant has an optimal temperature range at which it grows and preforms best (C) It may not be able to take in enough water and nutrients through it's roots (D) Too much heat can cause plant cells to break down, a process called denaturation.
Answer:
The correct answer is - (B) As with any living thing, a plant has an optimal temperature range at which it grows and performs best.
Explanation:
Like any other or most of the living organism, plants also required an optimal temperature range as they also required appropriate temperature for their growth and development and perform their functions at their best.
Optimum temperature range is a temperature range at which something performs its best similarly plants perform their cellular functions like photosynthesis, metabolism, reproduction, and many other functions that require a particular temperature range.
what group had and kept the earliest written records of astronomical observation
Answer:
Assyro-Babylonians
Explanation:
What would cause a person’s eye color to change from blue to green while that person was a child?
Answer:
Gray eyes may be called “blue” at first glance, but they tend to have flecks of gold and brown. And they may appear to “change color” from gray to blue to green depending on clothing, lighting, and mood (which may change the size of the pupil, compressing the colors of the iris
1. Which natural disasters immediately contribute to the carbon in the atmosphere
a. Active Volcanoes
b. Wildfires
c. Earthquakes
d. A and B are correct
2. Human activities add greenhouse gases to the atmosphere and in theory increase world climates therefore we are carbon (blank)
a. Sinks
b. Sources
1. D. A and B are correct
2. B sources
Answer:
1. D
2. B
Explanation:
A plant absorbs minerals from the soil. This is an example of
A. Digestion
B. Circulation
C. Nutrition
D. Growth
Answer:
C
Explanation: