Answer:
They allow for the recombination and random segregation of genetic material from the mother and father into new cells.
Explanation:
“The movement of cytoplasm is due to the movement of chloroplasts in the living cells of onion plant”, “while the movement of chloroplasts is due to the movement of cytoplasm in the living cells of bean plants”
which statement is correct and which one is wrong
''The movement of chloroplasts is due to the movement of cytoplasm in the living cells of bean plants'' is the correct statement.
The above statement is correct because chloroplast is an organelle which moves in the cell through the medium known as cytoplasm. Cytoplasm is a thick fluid that fills every type of cell and organelles are floating as well as suspended in this fluid.
All organelles such as the nucleus, endoplasmic reticulum, chloroplast and mitochondria etc are located in the cytoplasm. The portion of the cytoplasm except the organelles is called cytosol so we can conclude that chloroplast is an organelle which moves within the cell with the help of cytoplasm.
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Which organ systems work together to transport substances around a plant?
A.) Roots, leaves, flowers
B.) Stems, roots, flowers
C.) Stems, leaves, flowers
D.) Stem, roots, leaves
Answer:
B.) Stems, roots, flowers
Explanation:
why does max scherzer have two different colored eyes?
Answer:
he has heterochromia iridis
Explanation:
Scherzer has an uncommon condition called heterochromia iridis that affects less than 200,000 people in the United States. The condition, which in most cases doesn't damage the eyes, is caused by the distribution and levels of melanin in the irises
How is coal and petroleum formed
Answer:
Coal and petroleum are formed as a result of degradation of ancient plant life which lived millions of years ago. These dead plant matter started to pile up, eventually forming a substance called peat. Over time, heat and pressure from geological processes transformed these materials into coal.
Explanation:
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•Is kidney dialysis similar to active or passive transport? Elaborate on your answer.
Dialysis is a passive process that favors the transport of small molecules across a semipermeable membrane.
What bird species was most noticeably impacted by West Nile virus when the virus was first detected? Was this the only bird species affected by the virus?
Answer:
Mostly crows, robins, and jays were the first of a few bird species impacted by the West Nile Virus when it was detected.
No, there were over 300 species discovered to be affected by the virus, these were just the main ones to be impacted.
> What is the name of this phase
Answer:
This would be Metaphase. I hope this helps you! :)
Use each vocabulary term in a sentence.
13. controlled study
14. environmental ethics
Answer:
Controlled study:
We conducted a controlled study on the two plants.
Environmental ethics:
The man over there is all business he talks of social and environmental ethics.
Explanation:
Hope this helps :}
Pls make brainliest :P
And have an amazing day <3
A scientist looks at lung tissue under a microscope. Which level of
organization is simpler than lung tissue?
A. The respiratory system
B. The organism
C. Lung organ
D. Lung cells
Answer:
D. Lung cells
Explanation:
There are many organizations of living things and parts of living things. From simplest to complex the levels are: cells, tissue, organ, system, organism. So, if you have lung tissue then the only simpler organization is cells. These are simpler because cells are what make up tissue, just as tissue makes up organs. Through the levels, the more simple something is then the smaller it is, relatively.
From the types of light that reach Earth's surface, which do you think could be causing skin cancer?
Explain your reasoning.
The type of light that could cause skin cancer is the ultraviolet (UV) light rays. The following reasons are further explained why they harm the skin.
What is ultraviolet (UV) light?The ultraviolet light is a type of electromagnetic radiation that possess a shorter wavelength than the visible light.
The solar radiation from the sun that reaches the earth planet is made up of the following:
visible light,Infrared rays andultraviolet light rays.The ultraviolet light is harmful to the skin when exposed to it for a long time. This can damage the DNA of the skin cells which can lead to abnormal proliferation or uncontrolled growing of the cells which eventually causes cancer.
Therefore, the type of light that could cause skin cancer is the ultraviolet (UV) light rays.
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Why does the rate of somatic cell division differ?
Answer:
The cells divide in order to replace the old and damaged cells, and so that the body of the living being can grow
Explanation:
Answer:
The skin cells prevent germs from coming in our bodies. Skin cells are very easily removed, so it needs to reproduce faster. Every single person both young and old has new cells every second replacing the old and dead cells in your body.
explain : Changes in temperature and humidity: skin helps to regulate body temperature, control moisture loss and maintain the balance of fluids. Pressure, blows and abrasion: skin recognises pain and alerts us to danger. It acts as a barrier and shock absorber.
how long does it take for a body to decompose underwater
Answer:
Even a weighted body will normally float to the surface after three or four days, exposing it to sea birds and buffeting from the waves. Putrefaction and scavenging creatures will dismember the corpse in a week or two and the bones will sink to the seabed.
Explanation:
Hope it helps!!
Answer:
According to the Australian Museum, in the summer, a body can completely decompose in as little as nine days.
Explanation:
How would life on Earth be affected if water was less dense than ice?
Answer:
freeze and sink over and over until the entire lake was frozen.
Explanation:
This would eliminate many aquatic organisms and produce a system with far fewer life forms in lakes which freeze periodically.
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After the amino acid chain leaves the ribosome, which organelle then folds, modifies, and transports the protein?
O Lysosome
O Cytoplasm
O Endoplasmic Reticulum
O Ribosome
Answer:
The endoplasmic reticulum
Explanation:
It is not the lysosome because their processes are degrading and recycling cellular waste, and involved in energy metabolism
It is not the cytoplasm because the cytoplasm doesn't do anything itself, it just provides an environment for the rest of the organelles to do their job
It is not the ribosome because the amino acid chain left the ribosome in the question
For secretory, plasma membrane, and organelle proteins, the endoplasmic reticulum (ER) is a significant protein folding compartment. Thus, option C is correct.
What is the role of Endoplasmic Reticulum in folding?A polypeptide chain cannot acquire its right structure and function without protein folding.
Chaperones are HSP that aid in protein folding. Chaperonins are multimeric complexes that fold proteins by forming hollow structures.
Numerous general activities of the endoplasmic reticulum include transporting produced proteins in vesicles to the Golgi apparatus and folding protein molecules into sacs termed cisternae.
Therefore, Endoplasmic Reticulum folds, modifies, and transports the protein.
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21. Three different processes are occurring in the drawing below. Name each process and describe it.
Answer:
Process A is diffusion
- diffusion is the random movement of molecules from the area where there is more of them to an area where there is a few of them without the input of energy.
Process B is facilitated diffusion
- facilitated diffusion is the transport of substances across a cell membrane from an area of higher concentration to a lower concentration with the help of Transport protein
Process C is active transport
- A ctive transport is when an input of energy is required to move materials through a cell membrane .
Which of the following is not a lipid?
Asteroid
B cholesterol
C
wax
D cellulose
Answer:
cellulose
Explanation:
lipids are fats oils or waxes. cellulose is a fiber
Answer:
cellulose
Explanation:
Examples of lipids include fats, oils, waxes, certain vitamins (such as A, D, E and K), hormones and most of the cell membrane that is not made up of protein. Therefore waxes are not the answer.
Steroids are lipids because they are hydrophobic and insoluble in water, but they do not resemble lipids since they have a structure composed of four fused rings. Cholesterol is the most common steroid and is the precursor to vitamin D, testosterone, estrogen, progesterone, aldosterone, cortisol, and bile salts. Therefore steroid and cholesterol is not the answer.
how does chromatid cohesion as maintained by cohesin proteins differ in mitosis and meiosis?
a typical human chromosome contains about how many nucleotides in its dna?
Answer:
50 million nucleotide pairs
The typical human chromosome contains 50 million nucleotide pairs
in its DNA.
What is DNA?Deoxyribonucleic acid (DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid (RNA) are nucleic acids. Alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macro molecules that are essential for all known forms of life.
Hence, The typical human chromosome contains 50 million nucleotide pairs.
in its DNA.
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True or False?A group of organs that work together to perform big jobs for your body is an organ system.
Answer:
True :)
Explanation:
an organ system is consisted of a group of organs that work together to carry out a complex function.
Acidic rainwater dissolving rock is an example of
A. oxidation
Bicarbonation
C.hydrolysis
D. salt wedging
Explanation:
oxidation bicarbonation
In basidiomycete fungi, where specifically do nuclei from parents combine to make offspring spores
In basidiomycete fungi, the nuclei from parents combine in the BASIDIA to make offspring spores. Basidia are microscopic structures but they are generally produced on large fructifications known as fruit bodies.
A basidium is a sporangium localized on the hymenophore of the fruiting bodies in basidiomycete fungi.
In basidia, the nuclei of two parental strains fuse by karyogamy and then divide to reproduce basidiospores.
A basidium generally contains four sexual spores known as basidiospores.
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Which of the following best represents the goals of the 1963 March on Washington organizers?
A.) To tell Congress they are doing great.
B.) To unify Americans to gather in non-violent protest to bring about real, actionable change
C.) To get the president on their side
D.) To support separate education
Answer:
D.) To support separate education
Explanation:
Answer:
B
To unify Americans to gather in non-violent protest to bring about real, actionable change
Explanation:
Originally conceived as a mass demonstration to spotlight economic inequalities and press for a new federal jobs program and a higher minimum wage, the goals of the march expanded to include calls for congressional passage of the Civil Rights Act, full integration of public schools, and enactment of a bill prohibiting ...
How to use bacteria as a treatment for sewage waste
Answer:
Aerobic bacteria can be used to use the available oxygen in the water to degrade the pollutants in the waste and convert it into energy it can use for its metabolic processes.
which statement correctly describes macromolecules?
A nitrogen is essential for Carbohydrate formation
B lipids or water loving molecules critical for cell functions
C most macromolecules contain carbon, hydrogen, and oxygen
D repeating units, called amino acids, contain phosphorous and are used to build nucleic acids
Answer:
I would go with C.
Explanation:
Macromolecules contain carbon, hydrogen, and oxygen. option A correctly describes the macromolecules.
Macromolecules:Macromolecules are two or more atoms connected by chemical bonds. Macromolecules contain carbon, hydrogen, and oxygen.
Carbon, hydrogen, and oxygen are essential for carbohydrate formation. Lipids are water-insoluble that are critical for cell functions. Nitrogen is used to build nucleic acids.
Carbon, hydrogen, and oxygen are 96 percent in nature. Calcium, phosphorus, and potassium are major elements. Boron, iodine, and silicon are 0.5 % in nature. Carbohydrates represent group of substance which include starch, sugars and cellulose.
Therefore, Macromolecules contain carbon, hydrogen, and oxygen. option A correctly describes the macromolecules.
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(a) Identify the most likely mode of transport across the membrane for substance L. Explain how information provided helps determine the most likely mode of transport.
Active transport occurs against the electrochemical gradient. It needs energy to move molecules from the lower concentration side to the higher concentration side. The mode of transport is active transport.
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There are three main different types of transport across the membrane
Simple diffusion ⇒ Does not need energy to occurFacilitated transport ⇒ Does not need energy to occurActive transport ⇒ Needs energy to occurActive transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen.
Molecules move from the lower concentration side to the higher concentration side of the membrane.
Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential.
In the exposed example, a scientist wants to determine how substance L enters a cells in a culture.
The cells maintain a 120 mM intracellular concentration of substance L. Varying external concentrations of substance L (10 to 100 mM) in culture medium (Table 1).Table 1. Rate of entry of substance L into mammalian cells in culture
External concentration of substance(mM) Rate of entry of substance L
10 5%
20 25%
30 45%
40 65%
50 80%
60 90%
70 95%
80 100%
90 100%
100 100%
Now, we need to identify the most likely mode of transport across the membrane for substance L, and explain how information provided helps determine the most likely mode of transport.
We know that the intracellular concentration is 120mM.
As we can see, this concentration exceeds all of the culture media concentrations. Yet, the substance keep moving into the cell.
As the concentration inside the cell is always higher than the concentration outside, we can assume that this is not passive transport because the molecule transport is going against its concentration gradient.
Hence, the remaining option is active transport. And as said before, we can see it because the substance keeps crossing the membrane toward the cell interior despite its concentration being higher in the interior of the cell than in the exterior.
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Which of the following is NOT likely to be an outcome of building more wind and solar farms?
A: an increase in air temperature
B: an increase in rain
C: a change in wind path
D: a decrease in farming output
Answer: B: an increase in rain
Explanation:
Answer:
an increase in rain
Explanation:
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:
Which process causes river gravel to have
rounded edges?
A. abrasion
B. acid rain
C. ice wedging
D. oxidation
The epidermis of the leaf surface has the stoma that can help carbon dioxide diffusive inside the leaf with how many percents?
(sorry, my english is bad)
Answer:
27. 3%
As most c2 are being made on the leafs
what physical feature of dna is affected by the pairing of purines with pyrimidines?
Answer:
Its width.
Explanation:
The size of pyrimidines and purine is different because each group has a different structure (1 or two rings). Therefore, the width of DNA is "constant".
If we would pair two pyrimidines or two purines, the width of DNA would be different in both cases.
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