Help!! Why do geologists radioactive/carbon dating determine absolute age? (i need this quickly!)
Absolute dating methods determine how much time has passed since rocks formed by measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals. Paleomagnetism measures the ancient orientation of the Earth's magnetic field to help determine the age of rocks.
Carbon dioxide most likely enter the cell through which of the following processes
Answer:
Simple diffusion through the membrane
Explanation:
Oxygen and carbon dioxide move across cell membranes simple diffusion, a process that requires no energy input and is driven by differences in concentration on either side of the cell membrane.
Is everything in an ecosystem is connected?
g The gastrointestinal tract has 4 basic layers. Which layer is the one that comes in contact with the food that you eat?]
Answer:
Muscularis propria
Explanation:
The gastrointestinal tract has the following four basic layers:
1. Mucosa is the innermost layer
2. Submucosa is underneath the Mucosa
3. Muscularis propria
4. Adventitia is the outermost layer
Muscularis propria is the one that comes in contact with the food that you eat.
Adenine and Thymine are examples of...
Adenine and Thymine are examples of nitrogenous bases in a nucleotide.
What is a nucleotide base?A nucleotide is the monomer constituting DNA or RNA biopolymer molecules.
Each nucleotide consists of a nitrogenous heterocyclic base (or nucleobase), which can be either a double-ringed purine or a single-ringed pyrimidine; a five-carbon pentose sugar (deoxyribose in DNA or ribose in RNA); and a phosphate group.
The two classes of nitrogenous bases are purines and pyrimidines and they are as follows;
Purines - Adenine and GuaninePyrimidines - Cytosine, Uracil, ThymineAccording to this question, Adenine and thymine are examples of nitrogenous bases.
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Read the excerpt from Part 2 of "The Most Dangerous Game,” by Richard Connell. Then, wet with sweat and aching with tiredness, he crouched behind the stump of a lightning-charred tree. He knew his pursuer was coming; he heard the padding sound of feet on the soft earth, and the night breeze brought him the perfume of the general's cigarette. It seemed to Rainsford that the general was coming with unusual swiftness; he was not feeling his way along, foot by foot. Rainsford, crouching there, could not see the general, nor could he see the pit. He lived a year in a minute. What conclusion can a reader draw about Rainsford based on a visualization of the excerpt? He is relieved. He is lost. He is frightened. He is confused.
Answer:
I think it's he is frightened
Explanation:
hope this helps (￣▽￣)"
Answer:
c on edge
Explanation:
How does deforestation affect coral reefs?
Answer: When the forest cover is lost, soil washes away into rivers that flow into the oceans and, they believe, onto coral reefs. That runoff adds nutrients to the ocean water.
Explanation: Basically, when this occurs, the roots are no longer attached to the soil, letting all the nutrients get ruined in the ocean water instead of feeding plants/animals/trees.
KUES Questions
8. A water wave has a frequency of 2 Hz and a wavelength of
5 m. How fast does it travel through the water?
Answer:
10m/s
Explanation:
Given parameters:
Frequency of wave = 2Hz
Wavelength = 5m
Unknown:
Speed of the wave = ?
Solution:
The speed of a wave is derived from the product of wavelength and frequency;
speed = frequency x wavelength
Insert the parameters and solve;
speed =2 x 5 = 10m/s
DNA provides a very significant role in the formation and development of an organism.what is that role?
Answer:
The significant role that DNA provides is the organism's genetic information. It stores its information inside, and that's what makes up all the traits of the organism. All known cellular life contains DNA for this reason, and basically serves as long-term storage of information about the organism.
Which of the following are not present in animal cells?
Brainly involved! :) Why is studying animals in the wild considered to be somewhat experimentally "out of control"?
A) There are many factors that cannot be controlled that could influence the study.
B) It does not take place in a laboratory and is therefore not a valid experiment.
C) The test subjects are not trained to behave in a certain manner.
D) The experimenters are as careful with recording their results.
Answer:
Hmmm i tied between A and C because they both seem correct but since C sounds a little off ima say A
Explanation:
Answer:
A)
Explanation:
Other answers seem to appear only partially correct or not correct at all. If there's anything unclear, feel free to ask.
PLZ HELPPPP I NEED IT NOWEE
4 pros and 4 cons of nuclear desalination
20 points
Four pros of nuclear desalination; nuclear desalination provides accessible drinking water, helps with habitat protection, provides water to the agricultural industry, and uses a large amount of energy.
Four cons of nuclear desalination; Waste Disposal, nuclear desalination could lower down Ocean populations, nuclear desalination creates Health Concerns, and uses energy.
How do the equations help explain the role of producers in the ecosystem?
Answer:
Producers are organisms that create food from inorganic matter. The best examples of producers are plants, lichens and algae, which convert water, sunlight and carbon dioxide into carbohydrates. Consumers are organisms that cannot create their food. ... The producers are the foundation of any ecosystem.
Found this on google, hope it helps, have a great day/night and stay safe!
In the diagram, what type of mutation is shown?
Wild-type hemoglobin DNA
Mutant hemoglobin ONA
VIINIT
mRNA
mRNA
AANU, imam
Normal hemoglobin
Glu
Sicile-cell hemoglobin
Val
substitution - a base was changed
O insertion - a base was added
O deletion - a base was removed
Answer:
substitution - a base was changed
Explanation:
The nucleotide sequence CTT was changed to the sequence CAT. The T was substituted with an A. This changed the encoded amino acid from Glu to Val.
An insertion is where an additional base is added (e.g. if the sequence changed from CTT to CATT)
A deletion is when a base is lost (e.g. if the sequence changed from CTT to CT)
What is planned goal for the Europa Clipper mission (if you answer you get 100 pints need ASAP
Answer:
NASA's Europa Clipper will conduct detailed reconnaissance of Jupiter's moon Europa and investigate whether the icy moon could harbor conditions suitable for life.
Explanation:
Which organelle acts as the cells command center?
-Nucleus
-Ribosomes
-clole
-Chloroplasts
-Lysosomes
Answer:
nucleus
Explanation:
The most important factor(s) which limit the number of animals that can live in a biome is/are:
During which phase of meiosis does the separation of homologous chromosomes occur?
Answer:
In anaphase I, centromeres break down and homologous chromosomes separate. In telophase I, chromosomes move to opposite poles; during cytokinesis the cell separates into two haploid cells.
Let me know if this helps
Thanks :)
Explanation:
Labeling the Water Cycle
Tyt
Place each step of the water
cycle in its correct location.
Evaporation
Precipitation
Condensation
Groundwater
Transpiration
Runon +
Check
Intro
Answer:
what you have is correct
Answer: the image above is correct :))
Explanation:
because
what are two compelling pieces of evidence that support the theory of evolution?
There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.
The two compelling pieces of evidence that support the theory of evolution are the fossil record, and biogeography.
What is the theory of evolution?It is the change that attributed of the species for the various generations and believed on the natural selection process,
hence, we can conclude that The two compelling pieces of evidence that support the theory of evolution are the fossil record, and biogeography.
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5. The role of mitosis in asexual reproduction has what effect on genetic variation?
a. It greatly increases genetic variation.
b. It limits genetic variation.
C. It prevents genetic variation from occurring.
d. It has no effect on genetic variation.
Answer: D: it has no effect on genetic variation.
Explanation:
MARKING PEOPL AS BRAINLIST⚠️
Why does cell size need to be limited?
Where does the DNA come from that is in the parent cell?
Answer:
Your genome is inherited from your parents, half from your mother and half from your father. The gametes are formed during a process called meiosis. Like your genome, each gamete is unique, which explains why siblings from the same parents do not look the same.
The need to be able to pass nutrients and gases into and out of the cell sets a limit on how big cells can be. The larger a cell gets, the more difficult it is for nutrients and gases to move in and out of the cell. As a cell grows, its volume increases more quickly than its surface area.
Explanation:
The need to be able to pass nutrients and gases into and out of the cell sets a limit on how big cells can be. The larger a cell gets, the more difficult it is for nutrients and gases to move in and out of the cell. As a cell grows, its volume increases more quickly than its surface area.\
And as for the DNA, your genome is inherited from your parents, half from your mother and half from your father. The gametes are formed during a process called meiosis. Like your genome, each gamete is unique, which explains why siblings from the same parents do not look the same.
5. Which of the following statements correctly identifies a way in which
prokaryotic cells are different from eukaryotic cells? *
Prokaryotic cells have flagella, while eukaryotic cells do not.
Prokaryotic cells have chloroplasts, while eukaryotic cells do not.
O
Prokaryotic cells only have free-floating DNA, while eukaryotic cells have DNA
enclosed in a nucleus.
Prokaryotic cells only have cell membranes, while eukaryotic cells have both cel
membranes and cell walls.
Answer:
I think the correct answer is the number 2
What will happen to the pressure in the brain if water moves into it from the blood?
Answer:
A sudden increase in the pressure inside a person's skull is a medical emergency. Left untreated, an increase in the intracranial pressure (ICP) may lead to brain injury, seizure, coma, stroke, or death. With prompt treatment, it is possible for people with increased ICP to make a full recovery
Explanation:
A medical emergency occurs when a person's internal pressure suddenly increases. An increase in intracranial pressure (ICP) may cause brain damage, seizures, comas, strokes, or even death if left untreated.
What is brain?The brain is a sophisticated organ that manages every bodily function as well as thought, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger. The central nervous system, or CNS, is made up of the spinal cord that emerges from the brain.
There are two distinct parts of the central nervous system: gray matter and white matter. Gray matter in the brain refers to the thicker, outer layer, and white matter to the thinner, inner layer beneath.
It is possible for patients with elevated ICP to fully recover with prompt treatment.
Therefore, A medical emergency occurs when a person's internal pressure suddenly increases. An increase in intracranial pressure (ICP) may cause brain damage, seizures, comas, strokes, or even death if left untreated.
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How is the cell division of cancer cells like these misregulated?
Select all that apply.
Such cells are not inhibited by density.
Such cells can divide in the absence of growth factors.
Such cells skip the G1 phase of the cell cycle.
Such cells do not require anchorage to a surface in order to divide.
Such cells do not respond to signals that normally trigger apoptosis.
Such cells do not need enzymes for DNA replication.
Cancer is due to irregularities in cell division that are caused by mutations in cancerous cells. These mutations inhibit apoptosis and favor cell division. Among the options, the correct ones are 1, 2, 4, and 5.
------------------------------------------
Cancer is the result of irregular cell division.
Its development and progression are closely related to changes in the cell cycle regulator factors.
Cancerous cells
• Divide when they should not do it ⇒ overactivity of the positive cell division regulators.
• Do not stop dividing when they should ⇒ reduction in the activity of cell division inhibitors
• Do not die when they should ⇒ loss of the apoptotic capability
• Leave the area where they are growing ad travel to other parts of the body ⇒ metastasis
Normal cells divide and die during a programmed period.
When a normal cell mutates or suffers from any alterations that can not be repaired, it automatically activates its apoptotic process.
However, cancerous cells lose the capability of dying and their reproductive inhibition, so they keep growing and dividing with no limits.
The unlimited division occurs because mutations in cancerous cells influence the cell cycle by favoring proliferation and inhibiting senescence and apoptosis.
These cells do not depend on external growth factors or other protein signals to divide.
Cancerous cells can release their own growth factor and even influence neighbor cells to produce and release these substances.
Cell division is constant even when there is no space.
Sometimes over multiplication creates tumors that might affect healthy neighbor cells and the tissue itself.
Among the options,
1) Such cells are not inhibited by density. CORRECT
2) Such cells can divide in the absence of growth factors. CORRECT
3) Such cells skip the G1 phase of the cell cycle. INCORRECT
4) Such cells do not require anchorage to a surface in order to divide. CORRECT
5) Such cells do not respond to signals that normally trigger apoptosis. CORRECT
6) Such cells do not need enzymes for DNA replication. INCORRECT
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Cancer cells can divide in the absence of growth factors. Cancer cells do not require anchorage to a surface in order to divide. Cancer cells do not respond to signals that normally trigger apoptosis.
Cancer cells can multiply without any growth factors whereas normal cells will not divide without the addition of growth factors. Cancer and tumor cells are less dependent on anchorage. They are free to proliferate, and invade tissues. A normal cell that have damaged DNA will undergo apoptosis while on the other hand, cancer cell with unfixable DNA will not undergo apoptosis and will continue multiplication.
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A hurricane sweeps across the ocean and damages the houses of people living along the coast. This is an example of interactions between the
biosphere, atmosphere, and sand
hydrosphere, sand, and biosphere
atmosphere, sand, and hydrosphere
atmosphere, hydrosphere, and biosphere
Answer:
I think its atmosphere, sand, and hydrosphere
Explanation:
good luck :)
ILL GIVE BRAINLY PLZ HELP Fisherman at Reelfoot Lake, in Northwest Tennessee, noted a drop in the number of catfish. What is the most reasonable conclusion, based on the data provided?
A) The pH of the rain will not affect the fish that live in the lake.
B) The pH of the rain falling into the lake is of level that it is killing the adult fish.
C) The pH of the rain falling into the lake is of level that it is affecting fish reproduction.
D) The pH of the rain falling into the lake is of level that it is both affecting fish reproduction and killing adult fish.
Answer:
D, if you look at the acid rain it covers both death of fish and reproduction
can transpiration increase or decrease deforestation?
Answer:
Decrease
Explanation:
Transpiration is the movement of water through a plants parts and then evaporating into the atmosphere. The evaporation builds over time and allows rain clouds to form which then causes rain. Rain can not only water new life and allow it to grow but prevent deforestation. When large storms roll through it's almost impossible for groups to cut down trees.
3. Which of the following is an example of an artificial concept?
mammals
a triangle’s area
gemstones
teachers
Answer:
A triangle's area
I hope I helped you, have a great dayy