Answer:
9 pm
Explanation:
A pulls into the station every 6 hours while B pulls into the station every 3 hours. Hence, for every time A pulls up, B must have pulled up twice.
They both pulled into the station at 3 pm. At 6 pm (3 pm + 3 hours), B would pull into the station while A would still be on the road. At 9 pm (3 pm + 6 hours), B will pull in once more while A will just be pulling up the first time since 3 pm.
Hence, the next time both trains will pull into the station at the same time would be 9 pm.
During ______ oxygen defuses into a cell trough the cell membranes.??
Answer:
diffusion.
Explanation:
i answered because i need points.
what body systems ate most pikely involved in sensing and responding to a sharp object
Answer:
The nervous system, the integumentary system, the muscular system (and the skeletal system) are all involved in responding to a sharp object.
Explanation:
Can someone please help me with these 2 questions? ILL GIVE BRAINLIEST
Answer:
1: The higher the force applied to the ball, the harder to make a home run because of the third law: every action has a reaction, the reaction is absorbed by the bat.
2:Same equation: F=MA from the second law, if the ball has a higher mass, it will have a higher force.
Explanation:
The third rule, which states that every action has a response, which is absorbed by the bat, makes it tougher to hit a home run the more power is given to the ball.
Explain Newton's law.Newton's laws of motion are three fundamental physical laws that describe the behavior of objects in motion and how they interact with forces. The laws were first published by Sir Isaac Newton in 1687.
Law of Force and Acceleration - The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This law is often expressed as F=ma, where F is the net force acting on an object, m is the mass of the object, and a is the acceleration of the object.
Law of Action and Reaction - For every action, there is an equal and opposite reaction. This law states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.
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A red blood cell is 8 um in diameter.
A bacterial cell is 40 times smaller.
Calculate the diameter of the bacterial
cell.
Tick one box.
0.02 um
0.2 um
2.0 im
20.0 cm
Answer:
0.2um
Explanation:
take each of the answers multiply by 40 and see which the answer is 8um
0.2×40=8um
The diameter of the bacterial; cell would be 0.02 micrometer therefore the correct answer is option A.
What is the scale factor?It is defined as the multiplication factor used for the design of an object with respect to some other object. the scale is generally used to design prototype designs of large objects.
It is multiplied by the design dimension to get the actual size of the object or product.
As given in the problem A red blood cell is 8 micrometers in diameter. If a bacterial cell is 40 times smaller, then we have to calculate and calculate the diameter of the bacterial cell.
scale factor = 40
diameter of the bacterial cell = 8 micrometers/40
= 0.02 micrometers
Thus, the correct answer is option A.
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Which are examples of harmful mutations? Check all that apply.
Answer:
Harmful Mutations A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A... Cancer is a disease in which cells grow out of control and form abnormal masses of cells.Explanation:
Answer:
Harmful Mutations A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A... Cancer is a disease in which cells grow out of control and form abnormal masses of cells.Explanation:
Explanation:
Which type of energy causes the equator to be hotter than the north pole?
Answer: solar energy
Explanation:The amount of solar energy in a given area is greater at the equator than in an equal area at the poles, which is why the equator temperature is warmer than the polar temperatures.
Answer: solar energy
Explanation: I took the test
Energy you get from eating an apple
A chemical
B sound
C. electrical
D. light
Answer:
a
Explanation:
cause apple not get sound electrical or light energy
Answer:
A chemical
Explanation:
when you eat an apple: The carbohydrate breaks down into a sugar called glucose and enters your bloodstream (where it's termed “blood sugar”). That sugar travels to your cells, where it's turned into energy for your body.
An apple doesn't produce sound, electrical or light energy therefore the answer is chemical energy
Which condition leads to a slower rate of weathering?
Answer:
High temperature conditions lead to a slower rate of weathering.
Answer:
High temperatures
Explanation:
How does osmosis of water occur across the cell membrane?Plz help I need it ASAP
Answer:
In osmosis, molecules cross the cell's plasma membrane to achieve equilibrium.
Explanation:
A bilipid layer called a plasma membrane typically surrounds cells. Here, lipid molecules are arranged tail-to-tail, with their heads facing outwards. The heads of the lipids, are water soluble, while the tails are insoluble. Proteins and cholesterol also help maintain membrane fluidity.
With the use of its transport proteins, pores and gated channels, embedded among the lipids the membrane maintains its concentration of substances through selective permeability.
Simple diffusion occurs in cells through plasma membranes as a means of passive transport. In osmosis, molecules of water move across the membrane, down their concentration gradient- i.e. they try to balance their concentration or number of water particles.
The water particles move from regions of high concentration to regions of low water concentration. Typically these 'destinations' or regions have large amounts of solute which contributes to the formation of this gradient.
The time it takes for an animal to metabolize a drug to a non-detectable levels could be ____ than that of the withdrawal period 
A:Longer
B:Shorter
C:Same time
The time it takes for an animal to metabolize a drug to a non-detectable levels could belongerthan that of the withdrawal period. Hence the correct option is A.
The metabolism of a drug refers to the process by which the body breaks down and eliminates the drug from the system. The withdrawal period is the time required after administering a drug during which the animal must not be slaughtered for human consumption to ensure that no residues of the drug are present in the edible tissues.
There are several factors that can influence the metabolism of a drug in animals, such as the drug's chemical properties, the animal's species, age, health status, and metabolic rate. Some drugs may be metabolized relatively quickly, while others may take longer to be completely eliminated from the system.
Hence the correct option is A.
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The process of meiosis does all of the following except:
Goes through two rounds of division.
Forms sex cells or spores.
Results in four unique haploid cells.
Produces two genetically identical cells.
Answer:
The last one does not happen meiosis create four genetically different haploid cells
Meiosis, on the other hand, creates four distinct daughter cells, each of which has half as many chromosomes as the parent cell. Thus, option D is correct.
What are the advantages of meiosis?Meiosis is crucial for three reasons: it promotes genetic diversity, sexual reproduction of diploid species, and the correction of genetic flaws.
A parent cell undergoes mitosis, which creates two identical daughter cells with the same number of chromosomes.
Genotypic diversity is produced, and appropriate homologous chromosomal segregation is ensured via meiotic crossing over.
Despite these functions, very little is known about the genetic and population genetic mechanisms that resulted in the evolution of species-specific variations in recombination rates.
Therefore, process of meiosis produces two genetically identical cells.
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Which rock has the highest metamorphic grade?
Answer:
The answer is Gneiss
Its the highest metamorphic rock
Question 8 of 20:
Select the best answer for the question.
The honeycomb-like appearance of this sandstone is a result of
A. salt weathering.
B. oxidation.
C. hydrolysis.
D. frost wedging.
Answer:
Its Salt weathering
Explanation:
Salt waethering causes those honeycomb holes.
Answer:
a
Explanation:
1. When a bridge-like structure forms between bacteria and genetic material is exchanged, bacteria are reproducing through which process?
A. Binary fission
B. Transformation
C. Transduction
D. Conjugation
Answer:
D. Conjugation
Explanation:
Bacterial conjugation is the transfer of genetic material between Bacterial cell by direct cell-to-cell or by bridge like connection between two cells.
The process in which the formation of a bridge-like structure takes place between bacteria to exchange genetic material is known as conjugation and thus option D is correct.
Bacteria is a prokaryotic cell and it has developed various methods for the purpose of genetic recombination. Genetic recombination is significant for genetic diversity. The 3 most common methods used by bacteria for the diversification of their DNA are namely Transduction, Transformation, and Conjugation.
The Conjugation process is explained as follows:
The Conjugation process in Bacteria is explained as the genetic material transfer between bacterial cells by direct contact between cells or by a connection formed by a bridge-like structure between the cells. The pilus plays a significant role in forming a connection between 2 cells. With the help of the formed contact, the plasmid can be able to transfer its own copy to the recipient bacterial cell which results in exchanging of genetic material.Thus, we can conclude that the conjugation process in bacteria can cause the formation of a bridge-like structure to exchange genetic material and option D is the correct answer.
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Photosynthetic pigments can be separated using a technique
called paper chromatography. Which of the following
statements is false regarding this technique?
O A solvent is needed to move the molecules up the
chromatography paper.
Water was used as the solvent to separate the various pigments.
The smaller molecules moved faster and further up the
chromatography paper after a certain amount of time
The paper chromatography can be used to separate all
photosynthetic pigments not just chlorophyll.
What is the name of the process that plants use to remove carbon from the atmosphere?
Photosynthesis
Because they use carbon in photosynthesis and hence they need it. So, they take it from atmosphere.
6CO2 + 6H2O → C6H12O6 + 6O2
can someone confirm if this is the right sequence?
Answer:
Confirmed
Explanation:
uses strong magnetic fields to show a cross section of
a body part and can show both soft tissues and dense tissues. Cross sections can
be combined by computer to give a complete image of the whole area.
Answer:MRI (magnetic resonance imaging)
Explanation:
Describe an environmental factor that could influence natural selection and increase genetic diversity.
Answer:
Explanation:
Environmental factors can influence natural selection because they can increase or decrease. ...
An increase in food and a decrease in predators would most likely genetic variation in a population. ...
In a few generations, this population of beetles changed.
Explain how weathering, erosion, and subduction/volcanic activity help move or transfer carbon around the
geosphere or the geological carbon cycle).
dosent have to be a long answer! thank you
Answer:
Plankton use carbon to make carbonate (CO3) shells in the ocean. The shells sink and accumulate into layers of sediments and eventually rocks. Rocks are pushed deep into the earth and melt at subduction zones, dissolving the carbon. Volcanic eruptions release carbon dioxide into the atmosphere.
Explanation:
Please help
Which type of transport is occurring in this picture? Question 7 options:
A. Osmosis
B. Facilitated Diffusion
C. Simple Diffusion
D. Endocytosis
Answer:B facilitated diffusion
Explanation:
This question is from A P E X please solve it if possible will give brainiest to the correct answer and have a great day :)
What is Amitosis cell
( direct cell) division?
Answer:
It is cell proliferation that does not occur by mitosis, the mechanism usually identified as essential for cell division in eukaryotes.
Explanation:
DUE NOW PLEASE HELP ME!!!!! 10 POINTS
Do you now notice any signs of growth? In which part of the ginger piece do you
notice growth occurs?
is there a picture near the question?
In ginger, growth can be seen in the rhizome, it is a modified root. The rhizome grows the plant.
What is growth?Growth is the constant expansion of an organism's size through time. It could also be described as one of a living thing's traits. "Biological growth" in biology refers to development that occurs throughout time. Throughout their lives, living creatures frequently expand. But it is a process that unfolds gradually and on a regular basis.
Typically, growth starts when a single cell is present. This cell may divide and enlarge in a particular area, as in plants, or it may diversify and enlarge over the entire organism, as in mammals.
The environment and internal elements have a large role in determining how rapidly or slowly an organism will grow. These variables have undergone centuries of change, changing how living things behave. Thus, growth can be in rhizomes in ginger.
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Cells spend very little of their life performing mitosis. Most of a cell’s life cycle is spent in interphase. Interphase is made up of the first growth phase, the synthesis phase, and the second growth phase. The synthesis phase is characterized by -
The division of cytoplasm
Cell division
Replication of mitochondria and other organelles
DNA replication
Answer:
DNA replication
Explanation:
Synthesis is the stage characterized by DNA replication. It is after the G1 phase
Most of the cell's time is spent in the interphase. The first growth phase comes first, then the synthesis phase, and finally the second growth phase. In the synthesis phase, DNA replication occurs. So the last option is correct.
What is interphase in a cell cycle?
The interphase is the preparatory phase of the cell before going into the division phase (M phase). The first phase is the G1 phase, or first growth phase, in which the cell grows in size. Then the cell enters the synthesis phase, or S phase, where the cell's genetic material, which is DNA, is replicated.
A single DNA molecule duplicates itself, but the two DNA molecules are linked by a single centromere. In synthesis phase the centrosome replicates too, making two centrosomes. Then the cell enters the second growth phase, or G2 phase. Here the cell again grows for the division.
Hence, in the synthesis phase, DNA replication occurs. The last one is correct.
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Which would be an activity conducted by a biologist?
Answer:
well the answer would be describe the behavior of brown bats
Explanation:
I've had this question before.
You didn't exactly put the choices down but sorry if this is incorrect because this was correct for me!
All objects on the Earth's surface are exposed to weathering and erosion. Which type of rock is
formed when rocks are exposed to weathering and erosion?
A) magma
B) lava
C) sediments
D) granite
Which of the following correctly identifies the most productive layer of a soil profile?
A fossil that forms when the hard parts, I.e bones, wood, etc.., are turned into stone
A: index fossils
B: mold and cast
C: petrified fossils
D: trace fossils
Answer:
C: Petrified Fossils or B: Mold and Cast
Explanation: