Answer:23 chromosomes
Explanation:
To take human being for example,
There is 46 chromosomes in a human cell, and half is from father, and the other half is from mother. We call the chromosome is a pair. We write it 2n= 46.
In the meiosis I, the chromosomes is 1n=23.
what is the main function of the reticular activating system?
The reticular activating system's main function is regulating transition between arousal and sleep−wakeness.
what is reticular activating system?The reticular activating system (RAS) is a bundle of nerves located in the brain and it is responsible for regulating wakefulness and sleep-wake transitions.
It is also involve in filtration of noise with processing of messages or make it slower during sleep, it alters the brain's electrical activity, electrical voltage of brain waves and the speed.
The primary function of RAS is higher at brain centres when important messages are received and filter the important messages, for example The eye sends messages to the brain through the optic nerve.
If the RAS system is damaged, it can cause sleep problems, lethargy, or coma, also play a role in narcolepsy and degenerative brain disorders like Parkinson's disease and supranuclear palsy
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what is the approximate percentage of total fixed nitrogen attributed to human activities?
Of the annual global total of fixed nitrogen, human activities account for roughly 45%.
Nitrogen fixation is the global amount of nitrogen that gets assimilated by any living organism into another organic compound. The organic compound can be ammonia or nitrogen ions.
Of the total global annual nitrogen fixation, humans account for a great amount. The current estimation is that humans cause 45% of the nitrogen fixation annually. The leading causes of this high rate are the burning of fossil fuels and increased agricultural fertilizer use.
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20. Which element would be found in Period 5, Group 6?
А. Та
B. Mo
C. W
D. Nb
Answer:
A.
hope it helps
im from philippines.
a green plant which makes food using light energy water and carbon dioxide during the process of photosynthesis
Answer:
Explanation:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
Answer:
Autotrophs!
Explanation:
Autotrophs are plants that have chlorophyll, which is a green pigment found in plants. These plants do all the things in your question!
what are four examples of nutrients cycled in a biogeochemical cycle
Answer:
The Gaseous cycles include those of nitrogen, oxygen, carbon, and water; while the sedimentary cycles include those of iron, calcium, phosphorus, sulfur, and other more-earthbound elements.
Explanation:
Major examples are carbon, phosphorus, nitrogen, and oxygen in nutrient cycles in the biogeochemical cycle.
What are important nutrients in the biogeochemical cycle?Most of the elements are important to flow in the ecosystem to obtain living things and their surrounding environment in a balanced state.
This cyclic flow provides energy at every level in the ecosystem, carbon is an important substance synthesis during the photosynthesis process and this plays role in energy molecule flow in a particular direction.
In the biogeochemical cycle carbon cycle, oxygen cycle, nitrogen, and phosphorus cycle flow between the living organism and nonliving matter.
Therefore nitrogen, phosphorus, oxygen, and carbon are major nutrients in a biogeochemical cycle.
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if a cell has 24 chromosomes, how many chromosomes would each of its four daughter cells have after meiosis?
Answer:
Because there are two rounds of division without duplication in between, the genetic content is cut in half. Each of the 4 daughter cells will only end up with half of the genetic content of the parent cell. Therefore, after meiosis, the daughter cells would have only 12 chromosomes each.
list the function done by living organisms
Answer:
Respiration,Growth,Nutrition ,Reproduction and Excretion
Explanation:
I wasn’t here for this help please!! 22-26!
Answer:
22: B
23: B
24: B
25: A
26: A
Good luck!
Answer:
bbbaa
Explanation:
22.b
23.b
24.b
25.a
26.a
the process of breaking glycogen down to glucose is an example of
Answer:
catabolism
Explanation:
in the article, which technologies have been developed to enhance space exploration? choose all that apply
Answer:
Hahahah
Explanation:
what effort is made in nepal for the conservation of wildlife?
Nepal has made use of some limited hunting in hunting reserves to help fund their wildlife conservation efforts. No endangered species are allowed to be hunted.
▪▪▪Cutest Ghost▪▪▪Explanation:
Nepal has made use of some limited hunting in hunting reserves to help fund their wildlife conservation efforts. No endangered species are allowed to be hunted
what hormones are responsible for inducing and regulating labor
which type of fossils are used to identify specific time periods?
Answer:
Index fossils help to identify specific time periods. They are made from organisms that were distinctive, widespread, and lived briefly. Index fossils help to identify specific time periods. They are made from organisms that were distinctive, widespread, and lived briefly.
Explanation: hope this helps :)
Answer:
index file
hope this helps
:)
Explanation:
True/False: Blood entering the heart from the lungs is oxygen-poor blood.
Answer:true
Explanation:
Because we already used the oxygen from the blood to breathe (i think)
The process of differentiation is(1 point)
a process by which cells die.
a process by which cells repair themselves.
a process by which cells become specialized.
a process by which cells divide.
Answer:
C
Explanation:
I'm pretty sure I'm late but It's C. a process by which cells become specialized.
The process of differentiation is the process by which cells become specialized.
CELL DIFFERENTIATION:
Cell differentiation is the process by which an unspecialized cell becomes specialized in function. Cell differentiation is undergone by stem cells, which are regarded as totipotent cells. The process of cell differentiation occurs as a result gene expression. Cells like heart cells, blood cells, liver cells, kidney cells etc. are examples of specialized cells. Therefore, the process of differentiation is the process by which cells become specialized.Learn more at: https://brainly.com/question/20285092?referrer=searchResults
the genetic material of the eukaryotic cell is stored inside which organelle
The lens of the eye is held in place by the ___
Answer:
The lens of the eye is held in place by the iris
Explanation:
hope it helps you
Answer:
Ciliary Muscles
Explanation:
The muscles hold the lens in place but they also play an important role in vision. When the muscles relax, they pull on and flatten the lens, allowing the eye to see objects that are far away.
What does costal cartilage connect?
Answer:
a. Ribs to the sternum
Explanation:
Answer:
Ribs to the sternum
Explanation:
Mental excess could produce, for its own purposes, the
voluntary blindness and deafness of deliberate solitude, the
artificial impotence of asceticism.
In this sentence, voluntary means:
A. dangerous
B. mournful
C. timely
D. willful
the area where the optic nerve leaves the retina is referred to as the
Answer:
The optic disc
Explanation:
At the optic disc, the optic nerve fibers exit the eye through fenestrations within the sclera (lamina cribrosa).
A scientist is trying to decide whether an organism is unicellular or multicellular. Which information would help the scientist most to make her decision? A. size of the cells of the organism B. what the organism eats C. how many types of cells are in the organism D. how fast the organism grows
Answer:
how many types if cell are in the organism
What do invasive species do when in a new area?
Breed with existing species
Get in balance with the existing food chains
"Take over" the area and become more successful than the native species
Die because they cannot survive
Answer:
"Take over" the area and become more successful than the native species
Explanation:
Invasive species are species that are introduced to a habitat they are not native to. They are environmentally problematic becasue they disrupt native ecosystems in which they are able to thrive. They do not usually breed with existing species, they can disrupt existing food chains, and they wouldn't be invasive if they died out.
what type of circulatory system do earthworms have?
Answer:
a closed circulatory system.
Explanation:
an earthworm circulates blood exclusively through vessels.
Answer:
Closed circulatory system.
How would a cell make a protein that would go into the cell membrane?
Explanation:
Many proteins can move within the plasma membrane through a process called membrane diffusion.
This concept of membrane-bound proteins that can travel within the membrane is called the fluid-mosaic model of the cell membrane.
Which of the following accurately describes facilitated diffusion
Answer:
Xarwdef
Explanation:
1 point
8. In the above food web described, crab, clams, mussels, sea snails and
urchins are
Mussel
Sea snail
Clam
Urchin
Crab
Primary Consumer (Herbivore)
Secondary Consumer (Carnivore)
Producer
Answer:
they are all primary consumers
Explanation:
Explain your observations. What did you observe? Submit your data chart here.
action potentials are conducted from the baroreceptors to the brain via which nerve?
Answer:
Action potentials are conducted from the baroreceptors to the brain via... the vagus nerve.
Explanation:
Hope this helps.
hybrid zones provide an opportunity to investigate _____.
Answer:
Hybrid zones are geographical areas where two interbreeding groups of genetically unique organisms meet. Hybrid zones provide an opportunity to investigate Reproductive isolation and Speciation.
Explanation:
the nurse is assessing a patient who is diagnosed with respiratory acidosis. which cardiovascular finding does the nurse anticipate when assessing the cardiovascular system?
If the nurse is assessing a patient who is diagnosed with respiratory acidosis. the cardiovascular finding that the nurse should anticipate when assessing the cardiovascular system are:
TachycardiaDysrhythmiaRespiratory acidosis is a condition where a person body cannot exhale the carbon dioxide or C02 inhale resulting in the accumulation or build up of carbon dioxide in their body.
When the nurse is carrying out assessment on the patient cardiovascular system the nurse should check out for Tachycardia and Dysrhythmia so as to detect any form of abnormalities.
Tachycardia occur when the heart beat too fast than normal and Dysrhythmia as well occur when the heart beat is irregular.
Inconclusion if the nurse is assessing a patient who is diagnosed with respiratory acidosis. the cardiovascular finding that the nurse should anticipate when assessing the cardiovascular system are:
TachycardiaDysrhythmiaLearn more here:
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