Answer:
Chromosomes condense before mitosis to allow them the ability to move smoothly, without becoming entangled and breaking. (So, they are conveniently packaged for cell division, in which the chromosomes must move to both poles of the cell.)
Explanation:Otherwise it would be a mess as they get tightly packed
organisms are structured and supported by....
Answer:
cells
Explanation:
Answer:
cells
Explanation:
Plz help ASAP !!!!!!!!!
Answer:
Ohm = resistance
Ampere = current
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Explanation:
What is the process of water moving from an area of low solute
concentration to an area of high solute concentration?
Answer:
Osmosis
Explanation:
Answer:
it is osmosis
Explanation:
Osmosis is the process whereby water move from a region of lower concentration to a region of higher concentration across a semi-permeable membrane.
Give an example of a phenotype for your favorite animal: ___________.
Answer:
Dogs
Explanation:
Hope this will help
70 points! b) How do scientists make a person's genes fluoresce? (2 points)
What are the sex chromosomes? Explain how it is shown in male and female; and karyotyping
Answer:
Females have two X chromosomes, while males have one X and one Y chromosome. A picture of all 46 chromosomes in their pairs is called a karyotype. A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.
Explanation:
Sex chromosomes are chromosomes which are responsible for sex determination. These are the X and Y chromosomes. Females have two X chromosomes and males have one X and one Y chromosome in their sex cells/gametes. Karyotyping is the visualization of chromosomes after blocking the cells in mitosis and staining; this allows us to identify the size, shape, and number of chromosomes present in cells, which is significant because extra, missing, or abnormal chromosomes can cause developmental problems or issues with body functions.
Which statement best describes the cell membrane?
Grupo de escolhas da pergunta
A) a two layer barrier of phospholipids, whole hydrophobic heads face toward the water, while their hydrophilic tails face away from the water
B) a two layer barrier of phospholipids, whose hydrophobic heads face away from water, while their hydrophilic heads face towards the water
C) a two layer barrier of phospholipids, whose hydrophilic heads face away from water, while their hydrophobic heads face towards the water
D) a two layer barrier of phospholipids, whole hydrophilic heads face toward the water, while their hydrophobic tails face away from the water
ASAP
Answer:
D
Explanation:
why do we need to eat
In general, how do many human activities influence the carbon cycle?
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels.
Explanation:
Carbon moves from the atmosphere to plants. ...
Carbon moves from plants to animals. ...
Carbon moves from plants and animals to soils. ...
Carbon moves from living things to the atmosphere. ...
Carbon moves from fossil fuels to the atmosphere when fuels are burned. ...
Carbon moves from the atmosphere to the oceans.
In a parallel circuit, there is only one path for current to take. Please select the best answer from the choices provided T F
Answer:
False.
Explanation:
A parallel circuit has more than one path for current flow. The number of current paths is determined by the number of load resistors connected in parallel. Total current in a parallel circuit is the sum of the individual branch currents.
Because cilia cannot function properly, smokers have a frequent headache.
True
Answer:
Explanation:
The cilia sweep out mucus and dirt so your lungs stay clear. Smoking temporarily paralyzes and even kills cilia. This makes you more at risk for infection. Smokers get more colds and respiratory infections than non-smokers.
Because cilia cannot function properly, smokers having a frequent headache is a true statement.
What is Cilia?These are tiny hair projections which are found in the airway of the body and helps to prevent dust or foreign matter from getting to the lungs.
Smoking destroys it and leads to insufficient oxygen inhaled by the body as a result of presence of contaminants which may therefore lead to headache.
Read more about Cilia here https://brainly.com/question/23275700
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Where in the world is HIV most prevalent?
Answer:
Explanation:
South Africa
Answer:
South Africa has the most people living with HIV
Explanation:
about 7.5 million
When Mendel crossed the P
(parent) generation, what did
he call the generation
produced by the P
generation?
re
A. P2
B. F1
C. F2
Answer:
B. F1
Explanation:
Plants used in first-generation crosses were called P, or parental generation, plants (Figure 8.3). Mendel collected the seeds produced by the P plants that resulted from each cross and grew them the following season. These offspring were called the F1, or the first filial (filial = daughter or son), generation.
What is one question that you have about genetics?
As a cell grows larger, the surface area of the cell increases much more rapidly than the volume of the cell.
True or false?
Answer:
true
Explanation:
As a cell grows bigger, its internal volume enlarges and the cell membrane expands.
Snow falling from the clouds has
potential energy
kinetic energy
Answer:
Kinetic Energy
Explanation:
what is theory of to observe the neucles in cheek cells
Answer: The theory of cheek cells is used for the identification of cheek cells.
Explanation:
The cells of cheek do not have cell wall. They have a cell membrane which allows on certain molecules to pass through it. The nucleus is located centrally in the cheek cells and it stores the DNA. It can be stained with the help of the methylene blue reagent. It appears blue in color which can be observed under the microscope. The cheek cells can be isolated from the buccal cavity by using cotton buds and cotton swabs can help in isolating the cells.
someone please help me
What materials do motor neurons need to survive and how do they get those materials?
Answer:
Neurons are made up of three major parts: a cell body, or soma, which contains the nucleus of the cell and keeps the cell alive; a branching tree like fiber known as the dendrite, which collects information from other cells and sends the information to the soma; and a long, segmented fiber known as the axon, which transmits information away from the cell body toward other neurons or to the muscles and glands.
17 Some Birds with shorter beaks enter into a population of birds with much
longer beaks, resulting in the hatching of birds with in-between sized beaks.
Which No evolutionary mechanism are most likely responsible for this
scenario
A mutation and genetic drift
B natural selection and artificial selection
C gene flow and recombination of genes
D artificial selection and crossing over during melosis
The evolutionary mechanism that are most likely responsible for this scenario is:
C gene flow and recombination of genesAccording to the given question, some birds are said to have shorter beaks and when they mate with birds that have longer beaks, they produce offspring that have in-between size beaks.
The evolutionary mechanism that is in charge of this phenomenon is simply gene flow and recombination of genes. This is because there is a combination of genes from the parents and given to the offspring.
The shorter beaks and the longer beaks of the parents combined and the offspring got in-between beaks.
Therefore, the correct answer is option C
Read more here:
https://brainly.com/question/17073686
Which product of photosynthesis is the most vital to other organisms?
23. Which of the following species is most likely to become extinct?
A. a species that is well adapted to its environment
B. a species that is losing its habitat due to deforestation
C. a species that has a great amount of genetic variation
D. a species that has a decreasing number of predators
Answer:
B. Is the answer. They are losing their habitat and therefore will be more likely to go extinct
Answer:
B). a species that is losing its habitat due to deforestation
hope it helps
what's the name of the Era were dinosaurs reign is called?
Answer:
the mesozoica era
Explanation:
all 3 arw the triassic.jurassic and creataceous periods
Answer: Mesozoic Era
Explanation:
Bounded by the end-Permian and KT extinction events.
if 10% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides contain each of the other three bases
Cytosine-
Adenine-
Thymine-
Answer:
Cytosine: 10%
Adenine: 40%
Thymine: 40%
Explanation:
So we know that Cytosine and Guanine are complementary and Adenine and Thymine are complementary.
Cytosine would be 10%
What's left is 80%, which would be divided by two because adenine and thymine have the same percents.
Adenine: 40%
Thymine: 40%
Transcription occurs in the _______, while translation occurs in the _______.
Answer:
Explanation:
In a eukaryotic cell, almost all transcription occurs in the nucleus and translation occurs mainly at ribosomes in the cytoplasm. In addition, before the primary transcript can leave the nucleus it is modified in various ways during RNA processing before the finished mRNA is exported to the cytoplasm.
What happens when a low air pressure system meets a high air pressure system? (2 points)
Group of answer choices
The temperature of the air drops to below freezing.
The air moves to the low pressure system, creating wind.
The precipitation is removed from the air.
The air starts blowing in an easterly direction.
Answer:
the air moves to the low pressure system creating wind
Explanation:
Answer: B
Explanation:
In some types of cattle, brown hair and white hair share dominance. When two cows
reproduce, they can have offspring that have both brown and white hair.
B-brown hair
B' – white
A mature plant cell is different from a mature animal cell because the plant cell has?
Answer:
large central vacuole
Explanation:
mature plant cell contains large vacuoles while a animal cell has small vacuoles
A mature animal cell is different from a mature plant cell because of the plant cell has differentiation ability.
Mature plant cell can still divide and differentiate to produce a complete new plant.
The mature animal cells cannot differentiate into the other cells to produce all the different cells that can form a complete animal.
Therefore, A mature animal cell is different from a mature plant cell because of the plant cell has differentiation ability.
To know more about cells,
https://brainly.com/question/5763151
Where do mitosis and meiosis take place?
9th grade biology. 10 pts
photo provided -
When will a recessive trait be seen
in an organism?
A. when at least one recessive allele is present
B. when there is no recessive allele present
C. when there is no dominant allele present
Answer:
c
Explanation: