Answer:
In a pcr reaction, the strands of dna are first separated by heat.
Explanation:
How many chromosomes are present in the cell before the start of meiosis?.
Answer: 46
Explanation: 46 chromosomes are present in the cell before the start of meiosis.
The number of chromosomes that are present in the cell before the start of meiosis is 46. Because the total number of chromosomes in a human cell is 46.
What are chromosomes?Chromosomes are the thread-like structure present in pairs in all organisms. They are present inside the nucleus, and contain genes and DNA in them, and are responsible for the traits of an organism.
Meiosis is a process completed in two stages, and each contains four phases. It occurs in the germ cells, divides the cell into four cells, and reduces the number of chromosomes.
The number of chromosomes in humans is 46, 23 in pairs. Before meiosis, the number of chromosomes will be 46 after Meiosis the number reduces.
Thus, there are 46 chromosomes in the cell prior to the onset of meiosis.
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Which BEST describes the meaning of
the word "circulate"?
A. digest
B. breathe
C. cycle
D. excrete
Streams in watershed I experience substantially more algal blooms than those in watershed IV. Streams in watershed I experience substantially more algal blooms than those in watershed IV. A When precipitation varies, streams in watershed II experience the greatest fluctuations in water volume. When precipitation varies, streams in watershed II experience the greatest fluctuations in water volume. B Watershed III has the highest percentage of impervious surfaces. Watershed III has the highest percentage of impervious surfaces. C The water quality of streams in watershed IV is excellent because of the abundance of nutrients available to aquatic organisms. The water quality of streams in watershed IV is excellent because of the abundance of nutrients available to aquatic organisms. D Low dissolved oxygen is a severe problem in the streams in watershed I because of the inability of light to penetrate the forest canopy
Low dissolved oxygen is a severe problem in the streams in watershed I because of the inability of light to penetrate the forest canopy.
What is Watershed?This is defined as any surface area from which runoff resulting from rainfall is collected and drained through a common point.
Watershed I has the forest which has tall trees which form canopies as its highest land use. Due to the inability of light to penetrate, there is a reduction in photosynthetic activity by plants and reduction in oxygen produced which is why option D was chosen.
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Christie’s doctor recommends that she eat 40 grams of protein a day. She already consumed 50% of her recommendation for the day. How many serving of the given snack should christie have to meet her daily protein recommendation
Answer:
he options are not given. The options are;
A. 1 B. 3 C. 4 D. 6
The answer is 4 which is option C.
Explanation:
Protein recommendations is the amount of daily required dietary proteins for a person base in its weight.
Christie's Doctor recommend 40grams of dietary protein and she has already consumed 50% of it. This meant that she has consumed about 20 grams of the required dietary protein and she needed additional protein source to complete her daily requirements. Therefore, Christie needs additional four servings of snacks to meet her daily protein recommendations.
Explanation:
Answer: The options are not given. The options are;
A. 1 B. 3 C. 4 D. 6
The answer is 4 which is option C.
Explanation:
Protein recommendations is the amount of daily required dietary proteins for a person base in its weight.
Christie's Doctor recommend 40grams of dietary protein and she has already consumed 50% of it. This meant that she has consumed about 20 grams of the required dietary protein and she needed additional protein source to complete her daily requirements. Therefore, Christie needs additional four servings of snacks to meet her daily protein recommendations.
When a woman is pregnant, her developing baby receives antibodies from her. what type of immunity does this describe? immunity
Answer:
Antibodies from mothers are passed to their unborn babies through the placenta. This type of immunity is called PASSIVE IMMUNITY because the baby has been given antibodies rather than making them itself.
what is the work of mitochondria in human body
Explanation:
the main thing that a mitochondria does in the human body is produce a small molecule called adenosine triphosphate (ATP). and ATP's main goal is to transfer and store energy in the human body.
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How will the physical, biological and chemical factors interact to create a healthy aquatic display for the short and long term? (aquarium design impact the development of the life support)
the physical . of meaning a p.e
Explanation:
the physical education the meaning that is p.e
What is water deposition?
Answer:
Water deposition is when soil gets washed towards the plains, causing the water deposits in the riverbed over the years to change the course of the river.
Explanation:
Water deposition slows down when it reaches land or flows into an area of still water as well.
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What does this quote mean.?
Most of the shellfish we eat are going to be negatively impacted by ocean acidification due to the fact that they will be unable to build sturdy shells. Some oyster hatcheries in the Pacific Northwest have already been impacted, and have seen declines in larval settlement and survival rates.
Answer:
Most of the shellfish we eat are going to be negatively impacted by ocean acidification due to the fact that they will be unable to build sturdy shells. Some oyster hatcheries in the Pacific Northwest have already been impacted, and have seen declines in larval settlement and survival rates.
How long would it take a car traveling at a speed of 40 mi/h to reach a down 160 miles away?
i
d on't
k now
the answer
sorry
Various sigma factors play a role in gene expression by.
Answer:
Sigma factors bind to the promoter region of a particular gene and facilitating the binding of RNA Polymerase to the promoter region (formation of the RNA polymerase holoenzyme complex) in order initiate transcription of the gene.
Put simply - Helps RNA Polymerase do it's job.
Due to negative effects on blood lipids, partially hydrogenated oils, the main source of ______, have been banned from the food supply.
Due to negative effects on blood lipids, the main source of low density lipoprotein have been banned from the food supply.
What is Low density lipoprotein?This is a type of molecule which comprises of lipid (fat) and protein and is regarded as bad cholesterol as it clogs the arteries.
This type of lipid increases the risk of heart disease which is why it was banned from the food supply.
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Please help im timed what are the functions of a root? (select all that apply). they absorb water from the soil. they repair carbon dioxide for photosynthesis. they hold the plant in the ground. they take in nutrients from the soil.
Answer:
All of them are correct except for, "they repair carbon dioxide for photosynethesis because they just don't.
Explanation:
They don't
reaction velocity of a biological enzyme is highest at body temperature. which of these models represent this situation
Answer: A
Explanation:
Answer: The one shaped like a hill
Explanation:
Write a 500-word research report on a pathogenic bacterium that is not discussed in this unit (you may choose one from the table in the pathogenic bacteria section of the Eubacteria lesson). Include the history, the scientific name of the bacterium, vectors, symptoms, etc.
to include a variety of small objects collected from a
Forensic scientists have expanded the use of the term
crime scene
mineral
soil
dirt
o
droppings
Answer: Soil
Explanation: A soil sample doesn’t necessarily have to come from the forest floor or an outdoor location. Forensic scientists also use the term “soil” more generally to describe any collection of surface debris vacuumed from a location of interest.
Which of these shows unbalanced forces at work on an object?
A.
a bicycle chained to a bike rack at school
B.
an ice skater turning as he skates around an ice rink
C.
a water skier pulled by a boat at a constant 30 mph
D.
a car driving at a constant 25 miles per hour on a straight street
Answer: D. an ice skater turning as he slays around an ice rink
Explanation:
Which term describes the living and nonliving things in an area?
Answer:
Ecosystems
The living parts of an ecosystem, called biotic factors, are all the organisms that live in the area. The nonliving parts, called abiotic factors, are the nonliving things in the area. All the living things together in an ecosystem form a community.
Explanation:
HGD
-ghost
SCIENTIST PERFORME AN EXPERIMENT BY REMOVING A SINGLE SPECIES FRO TWO DIFFERT GRASSLANDS.ONE OF THE GRASSLANDS HAS A HIGH AMOUNT OF BIODIVERSITY. THE OTHER GRASSLAND HAS A LOW AMOUNT OF BIODIVERITY. WHICH COMMUNITY WOULD EXPERINCE THE LEAST AMOUNT THE LEAST AMOUNT OF DISRUPTION FROM THIS CHANGE?
The grassland with a high amount of diversity
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The scientific study of human populations is called.
Answer:
Demography is the statistical study of human populations. Demographers use census data, surveys, and statistical models to analyze the size, movement, and structure of populations.
Explanation:
What type of reproduction is most likely taking place?
The graph shows that the type of reproduction is ase xual reproduction. It is because the data tells us that the organisms were able to reproduce 300 offspring within three to four hours. The characteristic of an ase xual reproduction, which is able to reproduce in a short period of time, is evident in the graph.
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Your
the major organs of respiration, are located in the
body cavity in humans.
es
A)
lungs; A. dorsal
B)
lungs; B. thoracic
C)
Liver; C. abdominal
D)
trachea; D. ventral
Hered
Hint
Answer:
B. Lungs, Thoracic
Explanation:
Its located in the thoracic.
-Justin:)
Kendra is studying the energy pyramid shown. which statement is supported by the energy pyramid? the ecosystem can support fewer foxes than grasshoppers. foxes require less energy than birds. the ecosystem can support more foxes than birds. grasshoppers require more energy than birds.
Energy pyramid represents energy flow from one tropic level to other. According to energy pyramid, ecosystem can support fewer foxes than grasshoppers.
What is ecosystem?Ecosystem an area where plants, animals, and other organisms, co-ordinate for their living.
Ecosystem pyramid includes graphical representation of biomass at each tropic level.
In energy pyramid after every level, 90% energy is lost in environment as heat. There is a loss of energy nearly at each tropic level.
According to the energy pyramid ecosystem can support fewer foxes than grasshoppers.
Thus, the correct option is A.
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What is the area in the mutcd that is used to channel the motorist to the open travel lane?.
The area that in the MUTCD that is used to channel motorists to the open Trav Lane is the work space.
What is a work space?The work space is a segment of the highway which is very near or closer to road users and it is set aside for workers, equipment, and material, and a vehicle used upstream for travel lane. Work spaces are separated from road users by channeling it with some devices to exclude vehicles and pedestrians using a temporary barricade.
Therefore, area that in the MUTCD that is used to channel motorists to the open Trav Lane is the work space.
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What type of stress occurs when a rock mass is pushed in parallel and opposite directions? compression faulting shearing tension
Stress is the force that is applied to the rock. When the pressure is applied parallel but in opposite direction, is referred as shearing.
What is shear stress?The force that causes deformation of a material by slippage along planes that are parallel to the imposed stress.
The resultant shear is very important in nature as it relates the down-slope movement of Earth material and to earthquake.
Shear stress occurs when a rock mass is pushed in parallel but in opposite direction.
Thus, the correct option is C.
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Answer: C
Explanation:
Which of the following regulations is the primary law regarding water pollution?
a
The Safe Drinking Water Act
D.
The Clean Water Act
C.
The Marine Protection, Research, and Sanctuaries Act
d. WaterSense
Answer:
The safe drinking water act
hope this helps
Answer:
A
Explanation:
got it right on the test
In e. Coli, to repair a thymine dimer by nucleotide excision repair, in which order do the necessary enzymes act?.
Answer:
Excision endonuclease, then DNA Pol I, then DNA ligase.
Explanation:
Based on its effects on the central nervous system, alcohol can be classified as:.
Answer:
Alcohol is classified as a Central Nervous System Depressant, meaning that it slows down brain functioning and neural activity. Alcohol does this by enhancing the effects of the neurotransmitter GABA.
Explanation:
If this isn't one of the options you didn't give me any options so I can't help you there
The logistic growth model predicts that the growth rate of a population will decrease as the population size approaches the environment’s carrying capacity. Under what circumstances would you predict that a population would increase in size over and above its carrying capacity?.
In logistic growth, a population's per capita growth rate gets less and less as population size approaches a maximum charged by limited resources in the background , known as the carrying capacity.
The logistic population boost occurs when the growth rate of drops as the population reaches the carrying capacity.
What is logistic population growth?In logistic growth, population growth declines as resources become low, and it fells off when the carrying capacity of the atmosphere is reached. The logistic growth curve is S-shaped.
Thus, The logistic population boost occurs when the growth rate of drops as the population reaches the carrying capacity.
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The population would increase in size over and above its carrying capacityas the species populace length is confined through environmental elements like ok food, shelter, water, and mates.
What is carrying capacity ?Carrying capacity may be described as a species' common populace length in a selected habitat.
If those wishes aren't met, the populace will lower till the aid rebounds while assets are starting to decline, however due to preceding most suitable conditions, there may be a big reproductive occasion withinside the population.
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what is mitosis and how is it drifting then miosis
Answer:
Mitosis is a process where a single cell divides into two identical daughter cells (cell division).
Meiosis is the process in which a single cell divides twice to form four haploid daughter cells.
I'm not sure what you're trying to ask but here are some simple definitions for mitosis and meiosis.