Answers
This is what i have in my notes
When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.
Related Questions
A train is comparable to a ________________________. A train car is comparable to a _______________________. What are the building blocks of macromolecules
Answers
Answer:
The correct answer is - Polymer (macromolecules), monomer (building blocks
Explanation:
Polymers are comparable to the train as polymers are made up of several monomers linked together to carry more but can be removed from the polymer if required similarly the train cars that are comparable to the monomers or building block are joined together but can be taken off.
Macromolecules are polymers that are made up of joining monomers together and makes large molecules. Macromolecules like carbohydrates are made up of monosaccharides as monomers, proteins are made up of amino acids as monomer or building block, lipids are made up of fatty acids and nucleic acid are made up of nucleotides.
Which of the following determines the identity of an atom?
A)
Protons
B)
Mass number
C)
Neutrons
D)
Electrons
Answers
Answer:
A) protons
Explanation:
the number of protons in an atom of an element determines the atoms identify
Name 3 abiotic factors found in the Yellowstone ecosystem
Answers
Answer:
rocks, water, geyser
two of the risk factors for down syndrome include which of the following?
Answers
Answer:
Risk factors include: Advancing maternal age. A woman's chances of giving birth to a child with Down syndrome increase with age because older eggs have a greater risk of improper chromosome division. A woman's risk of conceiving a child with Down syndrome increases after 35 years of age.
Answer:
advancing maternal age.
Explanation:
During typical urination, a man releases about 400 mL of urine in about 30 seconds through the urethra, which we can model as a tube 4 mm in diameter and 20 cm long. Assume that urine has the same density as water, and that viscosity can be ignored for this flow. a. What is the flow speed in the urethra
Answers
Answer:
The flow speed in the urethra is 3.77 m/s
Explanation:
The flow rate or speed of a liquid is a measure of the volume of liquid that flows in a given amount of time.
Fluid flow rate, Q = area of the pipe or channel × velocity of the liquid
Q = A × v ; where Q is in m³/s or L/s; A is in m²; velocity, v = is in m/s
Also flow rate, Q = volume/time
volume, V, is in m³ and time is in seconds
therefore, V/t = A × v
v = At / V
Volume, V = 400 mL = 0.4 L = 4 × 10⁻⁴ m³
Area, A, of tube = πr², where r is radius in meters
r = 4 mm = 4 × 10⁻³ m
A = 22/7 × (4 × 10⁻³ m)²
therefore, v = {22/7 × (4 × 10⁻³ m)² × 30}/4 × 10⁻⁴ m³
v = 3.77 m/s
Therefore, the flow speed in the urethra is 3.77 m/s
why is aeration important in the tissue organ bath system?
Answers
Answer:
The organ bath is a traditional experimental set-up that is commonly used to investigate the physiology and pharmacology of in vitro tissue preparations.
Explanation:
because my mom told me
Which of the following BEST describes a cell using passive transport to maintain homeostasis?
A. oxygen moving from a high concentration in the lungs to a low concentration in the blood
B. ATP is used to pump K+ ions out of the cell and Na+ ions into the cell to resting potential
C. a white blood cell uses a vesicle to engulf bacteria to help fight an infection
D. a transport protein moves amino acids from a low concentration in the blood to a high concentration in the small intestines.
Answers
Answer:
Diffusion: the Simple and the Facilitated
Diffusion is the movement of particles down their gradient. A gradient is any imbalance in concentration, and moving down a gradient just means that the particle is trying to be evenly distributed everywhere, like dropping food coloring in water. This is what happened when we made our granola - a bunch of separate ingredients came together and spread out across the whole mixture. We call this evening-out moving “downhill”, and it doesn’t require energy. The molecule most likely to be involved in simple diffusion is water - it can easily pass through cell membranes. When water undergoes simple diffusion, it is known as osmosis.
Movement Across a Membrane and Energy
There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
Cartoon representing passive transport as rolling a boulder down a hill and active transport as rolling a boulder up a hill.
Explanation:
i hope this helps
Diffusion of the Facilitated and Simple best describes a cell that uses passive transport to maintain homeostasis.
What is passive transportation?Passive transport is a type of membrane transport in which substances are moved across cell membranes without the use of energy. Unlike active transport, which uses cellular energy to move substances across cell membranes, passive transport uses the second law of thermodynamics to move substances across cell membranes. Passive transport is defined as the movement of a solute from one side of the cell membrane with a high electrochemical potential to the opposite side with a lower electrochemical potential. Passive transport requires no energy input. Diffusion, the movement of molecules from a high concentration area to a low concentration area, is an example of passive transport. Facilitated diffusion is mediated by carrier proteins and channel proteins.To learn more about passive transportation refer to:
https://brainly.com/question/17293052
#SPJ2
A Bb guinea pig crosses with a Bb guinea pig. All of the four offspring are black. How did this happen?
Due today please help thank you
Answers
Answer:
The chance for having black offspring is 75% while for white, the recessive gene is 25%.
Explanation:
The chance for black offspring is a higher chance than white and that's why all of the offspring are black.
2.) 19. Which of these processes is important in increasing genetic diversity in
organisms?
♡
Answers
Answer:
its either meiosis or mitosis i cannot remember which though
Explanation:
The process that is important in increasing genetic diversity in organisms is meiosis, and in this process, the genetic diversity is seen due to the genetic crossing over and the recombination.
What makes meiosis important for the organism?Meiosis is the process in which the parent cell makes the gametes that are haploid in nature; the male makes the sperm and the female makes the ovum in this process, and each of these gametes contains half of the genetic materials of the parent. Because meiosis results in genetic diversity in nature, it is important for the organism that produces offspring through sexual reproduction, and genetic diversity is seen in animals due to this process.
As a result, meiosis is an important process for increasing genetic diversity in organisms, and genetic diversity is visible during this process.
Learn more about meiosis here.
https://brainly.com/question/29383386
#SPJ6
.
Which organ system is the xylem and phloem of the plant part of? A)Digestive system
B)Endocrine system
C)Respiratory system
D)Vascular system
Answers
Answer:
C is correct ans
Explanation:
Mark my answer as brainliest and thank me
What is the correct order of events: Homologous chromosome separate Chromosome condenses Lining up on metaphase plate, Crossing over Pairing up to form tetrad
Answers
Answer:
Chromosome condenses
Pairing up to form tetrad
Crossing over
Lining up on metaphase plate
Homologous chromosome separate
Explanation:
Condensation of chromosomes occurs in prophase I phase. Pairing up to form tetrad occur during prophase I. Crossing over occurs during prophase I of meiosis cell division. Chromosomes line up along the metaphase plate in the stage of Metaphase. Centromeres break down and homologous chromosomes separate in anaphase I phase of meiosis.
What might happen if there were no controls on the cell cycle?
Answers
Answer: When cell cycle is not controlled, it leads to still alive older cells and newly formed younger cells growing along with each other resulting in a tumor which is malignant, that is cancer. This can happen due to many factors as a result of genetic mutations.
Explanation:
A lack of control on cell cycle would cause older living cells to grow alongside younger living cells (newly formed), thereby, resulting in the formation of malignant cells (tumors) such as cancerous cells.
A cell cycle refers to an ordered sequence of events that takes place within a living cell as it grows and divide into two new daughter cells.
Basically, there are four (4) main stages in a cell cycle and these are:
Gap 1 (G1).Synthesis (S).Gap 2 (G2).Mitosis (M).The cell cycle is usually controlled and regulated so as to ensure living cells only divide as and when required by the body system of a living organism.
Hence, at each stage of a cell cycle, a set of conditions and control system determines whether or not a particular cell will continue into the next stage.
Generally, the cell cycle is controlled by cyclin-dependent protein kinases (Cdks) and regulated by subunits referred to as cyclins.
In conclusion, lack of control on cell cycle would cause older living cells to grow alongside younger living cells (newly formed), thereby, resulting in the formation of malignant cells (tumors) such as cancerous cells.
Read more: https://brainly.com/question/19559847
Sedimentary rocks are formed when sediments, smaller pieces of rock, gravel, sand, silt, or clay, are compacted and cemented together O True O False
Answers
Answer:
TRUE
SCJSDCBDSBV
DF
BV
FDS
BV
DFBVBDF
V
DF
Explanation:
Cells are open systems that exchange matter and energy with their surroundings. Which of the following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy? The energy input required for making organic compounds equals the usable energy output of respiration. The energy required from sunlight to start photosynthesis is less than the energy needed from another energy source. The energy required to make organic compounds is always greater than the potential energy stored in these compounds. The energy that a plant absorbs from sunlight is spontaneously transformed into chemical energy because the outputs are more stable.
Answers
Answer:
The energy input required for making organic compounds equals the usable energy output of respiration.
Explanation:
A reaction is endergonic (energy-consuming) process if the change in free energy is positive.
A positive change in free energy implies that energy is required to enter into the system. Let us recall that free energy is a state function. Hence, change free energy =free energy of products - free energy of reactants.
If free energy of products > free energy of reactants then the reaction is an endergonic (energy-consuming) process..
But The energy input required for making organic compounds equals the usable energy output of respiration, hence making the process spontaneous.
The following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy - The energy that a plant absorbs from sunlight is spontaneously transformed into chemical energy because the outputs are more stable.
photosynthesis
is a process that occurs in the presence of sunlight in order to derive energy.
These organisms by doing work release energy into the environment.The energy released into the environment is in form of heat.Plants release energy into the atmosphere when they do any work. they also release energy in the surrounding.It is an open system where energy can be transferred from one part of the system to another part of the system.Plant cells require sunlight to make organic compounds, according to Gibb's theory of free energy because, the energy that a plant absorbs from sunlight is spontaneously transformed into chemical energy because the outputs are more stableThus, The following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy - The energy that a plant absorbs from sunlight is spontaneously transformed into chemical energy because the outputs are more stable.
Learn more:
https://brainly.com/question/10012881
Which statement correctly describes how a sound wave travels through air? A. The wave carries molecules of air away from the source of the sound. B. The wave carries energy that causes molecules to move back snd forth. C. The wave carries a molecule in one direction until it collides with another molecule. D. The wave move through air and gains energy from the moving molecules that it touches.
Answers
Answer: A. The wave carries molecules of air away from the source of the sound .
Explanation:
The wave carries molecules of air away from the source of the sound describes a sound wave travels through air. So, the correct option is (A).
What are Waves?
When a disturbance in a medium occurs while carrying energy without a net movement of particles, this phenomenon is known as Wave. It can take the form of elastic deformation, a variation of pressure, electric or magnetic intensity, etc. There are some important parts in the Wave, they are- disturbance or variation which travelled through a medium.
There are three types of waves which is based on the orientation of particle motion and direction
Mechanical wavesElectromagnetic wavesMatter wavesWaves come in many shapes and forms which share some basic characteristic properties and behaviors can be distinguished from others based on several characteristics.
Thus, the wave carries molecules of air away from the source of the sound describes a sound wave travels through air. So, the correct option is (A).
Learn more about Waves, here:
https://brainly.com/question/3639648
#SPJ2
In order for a single-celled organism to reproduce, it may undergo
a.
binary fission
b.
sexual reproduction
C.
fertilization
d.
pollination
Answers
Answer:
Binary Fission
Explanation:
Single-celled organisms reproduce using binary fission. For example, bacteria are single-celled organisms. They reproduce using binary fission. Binary fission is the process of an organism splitting itself into two parts, with the parent's DNA in the new part.
Good Luck!
Tell me about a time when you made a mistake.. How did you find it and what did you do to correct it? (On the job, school work, recipe, etc)
Answers
Answer:
There was a time when I was in high school and I had a Math test. I did all the tasks in the test and was sure I answered everything correctly. However, just before I was about to submit the test, I saw that I forgot to add the minus sign (-) in one of the results. I quickly corrected my mistake and successfully submitted my test. In the end, I got an A as I really answered everything correctly.
Ecology focuses on
O A. ways to address environmental pollution and overpopulation.
O B. how organisms relate to each other and their environment.
O
C. how human activities affect the environment.
the relationship between economics and biology.
Answers
Describe the complications that occur most frequently during calving, and recommend the best practices for assisting cows during abnormal calving.
Answers
Answer:
Calving difficulty, technically called dystocia, is a major cause of death loss in cow-calf herds.
Explanation:
did research
HELPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
25
Explanation:
Which two organisms have a placenta?
A. camel and hawk
B. shark and hawk
C. human and koala
D. human and camel
Answers
Answer:
D.human and camel
Explanation:
because they are both placentar mammals
Please help me please
Answers
Answer:
..... Paracites....
Explanation:
im pretty sure it would be parasites because those factors are really harmful to other animal populations. They do not benifit in any cause but do impact. Thefore the answer would be parasites
hope it helped :P
How does waste filtered by kidneys leave the body? ( USA Test prep)
Answers
Answer:
The waste filtered by the kidneys leaves the body through the urine, which is expelled through the urinary tract.
Explanation:
The kidneys have the function of filtering the blood and cleaning it of any waste product, and for this purpose it produces urine.
Urine is an ultrafiltrate of the blood containing water, urea, uric acid, creatinine and ammonia, a product of cellular metabolism. As the urine is produced passes to the calyxes and renal pelvis, from where it will pass into the urinary tract to leave the body.
Which of the following is true of transcription.
Question 4 options:
only mRNA is made through transcription, tRNA is made in translation
transcription translates an entire DNA strand into mRNA
transcription occurs in the cytoplasm ******
only one gene is transcribed at a time
Answers
Answer:
its A
Explanation:
because the RNA is made through transcription
The transcription is the process of an RNA copy of the genes and the sequences of the genes.
The copy know as the RNA enters the molecules and leaves the nucleus of the cell to enter the cytoplasm. It has the ability to direction the synthesis of the protein which is encoded. The Prokaryotic transition takes place in the cytoplasm along with the translation. The process can take place very immediately and can take place along the nucleus of the cytoplasm.Hence the option C is correct.
Learn more about the is true of transcription.
brainly.com/question/13522118.
Nitrogen fixing bacteria in soil turns nitrogen gas into
Water
Ammonia
Oxygen
Carbon dioxide
Answers
Answer:
Ammonia
Explanation:
Nitrogen fixing bacteria turn nitrogen into ammonia and plants can absorb it
Hope this helps :)
does energy from Earth’s interior affect surface changes?
Answers
Yes Energy produced deep inside Earth heats rock in the mantle. ... As it becomes less dense, the heated rock rises toward Earth's surface. The cooler, denser rock surrounding the heated rock sinks, as Figure 5 shows. In this way, heat inside Earth moves toward the cooler crust.
What is the function of the nucleolus?
Please hurry it has to be 5-15 words and it can not be exact as what it says online
Answers
Answer:
It controlls and regulates the activities of the cell
It controlls the protien and enzyme synthensis.
It controlls the cell division and cell growth.
It is the storage of DNA,RNA and ribosome.
It controlls the heredity characteristics of the body.
I have to match these can someone help me ASAP thank you
38. Traits that increase fitness become
more prevalent over time: _____
39. Why males of a species may have traits that
seem to decrease their chances of survival: _____
40. The effect of random events,
especially in population of small size: _____
41. When one allele changes
into a different allele: _____
42. The movement of individuals
into or out of a population: _____
A. natural selection
B. sexual selection
C. genetic drift
D. gene flow
E. mutation
Answers
Answer:
38 A
39 B
40 C
41 E
42 D
Explanation:
Ngl the first few answers seem sus but I know these are correct
identify the molecules below. be as specfic as possible.
Answers
Which of the following variables in an experiment is the one thing is being tested and can be manipulated by the scientist
Answers
Answer:
the dependent variable
Explanation:
this is the variable that can be manipulated
