Answer:
The paintings are estimated to have been created during the Neolithic 8,000 years ago.
The range of a visible wavelength is
a 200 to 300 nm
b 50 to 250 nm
C С
400 to 700 nm
d 800 to 950 nm
Answer:
C- 400 to 700 nanometers!
Explanation:
The actual range is 380-700 nm, but the closest to that is 400-700 nm!
If a cell does not go through the Sphase of the cell cycle before mitosis, what might be wrong with the daughter cells?
Answer:
Synthesis is the phase of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Since accurate duplication of the genome is critical to successful cell division, the processes that occur during S-phase are tightly regulated and widely conserved.
Explanation:
If a cell has not properly copied its chromosomes or there is damage to the DNA, the CDK will not activate the S phase cyclin and the cell will not progress to the G2 phase. The cell will remain in S phase until the chromosomes are properly copied, or the cell will undergo programmed cell death.
Each step in the cell division is controlled and regulated by proteins like Cyclins. If a cell does not go through the S phase, it can not go to the G2 phase until the replication process is completed, or until it's programmed cell death.
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As the cell passes through different steps of cell division, there are auto control mechanisms to ensure that the step was correctly performed and the cell is ready to go to the next step.
Many regulator molecules act during the different stages of the mitosis process to make it possible.
There are too many factors interacting, activating, and deactivating to pass from one stage to another.
Cyclins are proteins that regulate the whole cell cycle. There are different types of cycling, each of them acting on a different stage.
When the cell is going through one of the stages, the only cyclin in high levels is the one that is regulating that cycle.
Once that stage is over, that cyclin concentration decreases, and the following one increases.
But if any step was not correctly performed, the cell can not pass to the following one.
During the S stage of the interphase occurs the DNI replication process.
At this point, also occurs the synthesis of histones and other associated proteins.
This is the only stage where the DNI molecule is replicated.
S phase cyclins are in charge of regulating the stage of DNA replication.
If the cell does not go through the S phase, the cyclins of this stage are not activated. And if S phase cyclins are not active, the cell can not go to the G2 phase.
The cell remains in the S phase until the DNA replication process is correctly done. And if it does not occur, the cell suffer programmed cell death.
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Related link: https://brainly.com/question/21126407
At what steps should arrows also be drawn in the opposite direction
Answer:
above
Explanation:
the line
what special function does the spleen of the seal do
Somebody help ????!!!!
Which organs of the digestive system are made of
muscle?
A. Esophagus
B. Stomach
C. Small intestine
D. Large intestine
Cane toads are large, nonnative, poisonous toads in Australia. After cane
toads entered Australia, scientists observed that the average head size in a
population of toad-eating snakes was getting smaller. Snakes with smaller
heads are not able to eat the large cane toads. What type of situation is this?
O A. Disruptive selection
B. Species richness
C. Directional selection
D. Genetic variation
The answer you are looking for is C
Natural selection is a process by which the organisms adjust to the variation in the environmental conditions so they can endure and thrive in the altered conditions.
The correct answer is:
Option C. Directional selection
This can be explained as:
Directional selection is a negative form of natural selection in which the inhabitants of one species is favoured over another.The species with better trait characteristics will be favoured over the organism with less preferred attributes.The allele recurrence in directional assortment shifts over time.Therefore, toads with better traits (head size) are favoured over snakes with smaller mouth sizes.
To learn more about the directional selection follow the link:
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Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
Answer:
Because water exhibits cohesive behavior.
Explanation:
Cohesive behavior can be explained as a behavior where molecules are attracted to each other.
And this means that, water molecules are attracted to each other because of their cohesive behavior. This makes them to be attracted to other substances, such as the walls of the xylem of plants.
In this case, it is believed that the water molecules behave this way because they are polar, that is, there is an electronegativity difference between the bonded atoms. And this enables it to move from the roots to the leaves of the plants.
what function does stem perform in cactus plant
Answer:toes
Explanation:
Fingers
Answer:
it gives water and hold the plant
and contrubite food for the whole part
Explanation:
The total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that
A) animal cells are spherical, whereas plant cells are elongated.
B) plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
C) plant cells have a much more highly convoluted (folded) plasma membrane than animal cells.
D) plant cells contain a large vacuole that occupies much of the volume of the cell.
Answer:
D
Explanation:
In plant cells, the vacuoles are much larger than in animal cells. When a plant cell has stopped growing, there is usually one very large vacuole. Sometimes that vacuole can take up more than half of the cell's volume. The vacuole holds large amounts of water or food.
Which structures are highlighted? Which structures are highlighted? goblet cells submucosa chondrocytes in lacunae seromucous glands
The image is not given in the question, so the appropriate image is attached below:
Answer:
goblet cells
Explanation:
Goblet cells are the mucin-secreting glands found within epithelia. Their shape and size look like a goblet, hence named goblet cells, and contain narrow bases and wide apex.
The structure highlighted in goblet cells scattered within epithelia. Goblet cells function for producing mucin, create a protective mucus layer and immunoregulation.
Hence, the correct answer is "goblet cells".
Monotremes are pouches animals that live in Australia or New Zealand
Answer:
true
Explanation:
What differences can you see in nucleus when you compare a dividing and non dividing cell
Answer:
The nucleus of a dividing cell is dense and spherical. It is comparatively larger in size during synthetic phase of cell cycle. Nuclear envelop also remain absent in many stages of nuclear division.
Explanation:
scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have --
A. flagella
B. hereditary material
C. Cell walls
D. Nuclear Membranes
Scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have cell walls. Thus, option C is correct.
What are the difference between eukaryotes and prokaryotes?Eukaryotes are distinguished from prokaryotes in that they organelles enclosed within a nuclear membrane. The organisms of spinoloricus are radically different from other known eukaryones in that they lack mitochondria and are able to exist in the absence of oxygen. However, their genetic material is contained within a nuclear membrane and they are therefore eukaryotes rather than prokaryotes.
Taking into consideration the main characteristic of each group, prokaryote, and eukaryote. In the first case, we have that it laks nucleus and has no sexual reproduction, meanwhile, the eukaryote has organelles and has sexual reproduction. Taking this into account we can proceed to answer each part.
Therefore, Scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have cell walls. Thus, option C is correct.
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Which organelle makes lipids?
Answer:
endoplasmic reticulum
Explanation:
The endoplasmic reticulum is an organelle that is responsible for the synthesis of lipids and the modification of proteins.
What is the fate of the products produced from photosynthesis
To play soccer,what type of energy is needed by your muscles so they will function properly?
A. Electromagnetic
B. Nuclear
C. Chemical
Answer:
Chemical
Explanation:
the human body runs off of chemical interactions
Which organelle is responsible for converting light energy into sugar?
I hope it is helpful for you .....
List the 4 critical elements that were discussed in class to ensure that you are properly performing an underhand throw.
Answer:
si
Explanation:
Which of the following is NOT a function of the cell membrane
a. contains genetic information
b. provides a boundary for the cell
c. controls transport
d. provides protection for the cell
Unlike passive transport, active transport requires what
Answer:
Chemical Energy
Explanation:
Active transport needs chemical energy in order to transport an object across a membrane.
Passive transport doesn't need energy in order to transport an object across a membrane.
How is sediment formed?
A. Loose material is cemented by pressure.
B. Chemical changes cause sediment to compact together.
C. Molten rock cools above Earth’s surface.
D. Weathering breaks down rock and other material.
Thank you for whoever helps :)
Answer: D. Weathering breaks down rock and other material
Explanation:
Because weathering/erosion cause rocks to break down into tiny sediments over time
A man has blood group A and his wife has blood group B. Their first child has
blood group AB and the second child has blood group O. What can one conclude
about the blood groups of their future children?
(3)
I
(9)
Answer:
Their future children can have blood group AB, O, A or B
Explanation:
since the husband had blood group= Heterogeneous A means AO
and,
the wife's blood group= Heterogeneous B or BO
so by crossing between them, we get this result.What do you think humans should do in order to minimize the harmful effects of climate change? Do you think it is likely that we will take the necessary actions you describe? Why or why not?
Answer:
There are actually many things we humans can do to help save our planet.
Explanation:
Avoid the use of electrical appliances
Ride bicycles instead of cars
And above all I would suggest we plant lots and lots of trees that could be a good help because trees consumes the bad gas and release the good gases into our atmosphere which does not burn the ozone layer and climate change won't be a national issue.
what is lithosphere
Answer:
Ask google
Explanation:
Answer:
Lithosphere
A lithosphere is the rigid, outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater
Explanation:
Does a chameleon eat a grasshopper?
Answer:
Explanation:
Chameleons are generally known as insectivores – carnivorous by nature. Depending upon the size and type of the chameleon the type of insects can be different. But, most of the chameleons eat grasshoppers, crickets, silkworms, flies, and cicadas.
SER carries out all of the following activities, EXCEPT:
a. lipid production
b. detoxification
c.connects RER to GA
d. produces RNA
Answer:
The correct answer is - option D. produces RNA
Explanation:
SER or smooth endoplasmic reticulum is a membranous, tubular organelle present in most of the eukaryotic cells. These ER lacks the ribosome on their surface as rough ER.
The major functions of this organelles are to produce lipid, hormones, protein, steroids for the complete cell. SER also carries detoxification of the metabolic byproducts of the cell. It acts as a bridge or connector between RER to Golgi apparatus.
do dicot and monocot leaves have different adaptations?
Answer:
Yes. Monocots have leaves with parallel venation, and dicots have leaves with reticulate, net-like venation. Describe an example of a plant with leaves that are adapted to cold temperatures. Conifers such as spruce, fir, and pine have needle-shaped leaves with sunken stomata, helping to reduce water loss.
Explanation:
I looked it up I'm not actually that smart lol
Based on calculations, students should have 10.4 grams of powder after conducting an experiment. The students get these results: 10.2 grams, 10.4 grams, 10.3 grams, 10.4 grams, and 10.5 grams.
Which words best describe this data?
accurate and precise
falsified and inaccurate
invalid and redundant
redundant and falsified
Answer:
accurate and precise
Explanation:
Given:
True value = 10.4 grams
Measured values = 10.2 grams, 10.4 grams, 10.3 grams, 10.4 grams, and 10.5 grams.
Solution:
To a very reasonable extent, the values measured given are accurate and precise.
Accuracy is the nearness of the measured value to the true value. We can see that the measured value would have a mean of 10.36grams which is very close to the true value on approximation.
Precision is the ability to repeat a given set of values from a measurement. The measured values are quite precise.
Why do some dominant traits have two different types of alleles?
Answer:
you inherit 2 alleles for each genes. one comes from your biological mom and the other comes from you biological father. if the alleles are identical like when both your parents have brown eyes and that it will cause you to have brown eye color. some alleles are dominant while the rest are recessive. the dominant trait is more stronger than recessive trait. It is a strictly relative effect between two alleles of a given gene of any function; one allele can be dominant over a second allele of the same gene, recessive to a third and co-dominant with a fourth. Additionally, one allele may be dominant for one trait but not others.
Explanation: