Answers
Answer:
D. Crossing over which alleles are exchanged
Explanation:
Crossing over or recombination is the process by which segments of a chromosome (alleles) are exchanged between the non-sister chromatids of two homologous chromosomes. The process of crossing over solely occurs during meiotic division.
According to the image attached to this question, a pair of homologous chromosome (one black, one red) are shown. The alleles of two non-sister chromatids i.e. non-identical chromosomes are exchanged in such a way that one part of the first chromosome is present in the second and vice versa. This process is called CROSSING OVER.
Related Questions
A book on a table has _______ potential energy than a book on a chair because the table is ________ off the ground.
Answers
Answer:
A book on a table has more potential energy than a book on a chair because the table is higher off the ground.
Explanation:
Feel free to correct me If i'm wrong :)
Answer:
ttttuyyyyyyyugtvyzj6dbydbxubfydkaidbghg
Which factor does not alter the rate of hydrolysis of maltose, a disaccharide?
A.temperature of the environment of the reaction
B.pH of the environment of the reaction
C.number of enzyme molecules present
D.size of the substrate molecule
Answers
The factor that does not alter the rate hydrolysis of maltose is the number of enzyme molecules present.
Enzymes are biological catalysts that promote various reactions in the body. Enzymes are specific in their action. Therefore, only an enzyme can catalyze a particular reaction. The enzymes work based on a lock and key model.
A disaccharide is composed of two mononosaccharide units. The factor that does not alter the rate hydrolysis of maltose is the number of enzyme molecules present.
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Bree saw a picture of two plates spreading and wondered what formed in between the two plates. What is the name for the area between the two diverging plates in this picture?
Illustration of two plate boundaries moving in opposite direction and magma flowing upward creating a step-like indentation on top.
A. transform boundary
B. ocean trench
C. rift valley
D. subduction zone
Answers
Answer:
rift valley
Explanation:
when two plates spread apart or diverge they create a valley
The name for the area between the two diverging plates in this picture rift valley.
What is rift valley?
A system of intra-continental ridges passes through Kenya from north to south, including the Great Rift Valley.
It is a portion of the Gregory Rift, the eastern branch of the East African Rift, which extends northward into Ethiopia from where it begins in Tanzania to the south. The Arabian, Nubian, and Somalian plates' interactions resulted in the formation of the "Kenyan Dome," a geographical upwelling.
It was once thought to be a component of the "Great Rift Valley," which stretched from Syria to Madagascar. The valley's majority was once part of the Rift Valley Province.
Therefore, The name for the area between the two diverging plates in this picture rift valley.
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#SPJ2
Find the slope between (-4,5) and (1, -15). Reduce it
show work
Answers
Answer:
m = - 4
Explanation:
[tex]\frac{-15-5}{1+4}=\frac{-20}{5}=\boxed{-4}[/tex]
Hope this helps.
PLEASE ONLY ANSWER IF YOU KNOW THE ANSWER!!! Will give brain and 5 stars( LOOK AT BOTH PICTURES)
Answers
In the city of WhiteBloodCell, harmful bacteria is threatening the city. So to the rescue comes Lysosomes, the cell engulfing handy man. As it destroys the bacteria, it realizes that the villain deserves a second chance. So the broken parts of the bacteria are its weapons, amino acids. So the Lysosomes brings these to its colleague Ribosome. There, Rob the Ribosome assemble these amino acids into a better, nicer protein. Those then are transferred to his friend Golgi apparatus. She modifies it further, packages it up nicely, and transports it out of the cell. Together, these heroes helped to save Organism from infection.
Hope that helps!
Englanda1
8. Fish have a bony structure called a
attached, supporting the gill structure.
to which the gill filaments are
Answers
Answer:
Each gill is supported by a gill arch – a bony structure that is oriented vertically on the side of a fish, just behind its head. The gill arch provides the support to hold a number of comb-like structures called gill filaments.
Which compound has the highest fuel value ? Why?
Answers
Answer:
Hydrogen gas has the highest calorific value of 150 KJ/g among all the fuels. So, hydrogen gas is considered to be an extremely good fuel.
Explanation:
Answer:
Hydrogen has the highest fuel value. I hope I helped
Delta and Alpha are the same distance from the equator, and they are both near the ocean. Using the information in the map, how does the air temperature of Delta compare to the air temperature of Alpha? Why?
Answers
The image of this question is missing, so i have attached it.
Answer:
Explained below.
Explanation:
From the image attached, we can deduce that;
- The air temperature of Delta will be warmer than Alpha.
- The reason is because the wind will push ocean water that's turning and following the coasts and thereby making energy to be transferred from the ocean to the air at Delta and also from the air to the ocean at Alpha.
Answer:
I am doing the same test as you, so it is D. warmer than Alpha. The winds push ocean water that turns and follows the coasts. A lot of energy is transferred from the ocean to the air at Delta, and only a little energy is transferred from the ocean to the air at Alpha.
Explanation:
Which of the statement about thermal pollution is not true?
a.
Its effect can be sudden or long term.
b.
It is caused by human activities and natural processes.
c.
It increases the oxygen holding capacity of water.
d.
It alters the natural conditions of aquatic habitats.
Answers
Answer: C
Explanation:
got a 90 on the quiz but correct if wrong
Answer:
It’s C. It increases the oxygen holding capacity of water
Explanation:
A, B, and D are all true
Within a cave environment, bat waste products, called guano, are decomposed by organisms such as fungi and bacteria. These are then eaten by
creatures such as flatworms. Larger animals like salamanders eat flatworms. Which correctly represents the energy flow described?
A. Fungi - Bacteria - Salamanders - Guano
B. Bats - Guano - Flatworms - Salamanders
C. Salamanders - Fungi - Bacteria - Flatworms
D. Guano - Bacteria - Flatworms - Salamanders
Answers
Answer:
D
Explanation:
The correctly represents the energy flow described in the given case is - D. Guano - Bacteria - Flatworms - Salamanders
Energy flowEnergy flow is the movement of energy that is transferred from one trophic level to another trophic level but does not revert back. It is always unidirectional and it follows II nd law of thermodynamics.
In the given food chain, energy is transferred from waste products called guano by a bat which does not involve a bat directly, thus it starts from guano, and energy moves to bacteria and then flatworms and ultimately to the salamanders.
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A dam is built in a remote area to provide electricity to nearby towns.
What is an unlikely effect of the dam? help!!!
Answers
Answer: option D decreased aquatic life upstream from warmer temperatures.
Explanation:
Answer:
increased fertility of the land downstream
Explanation:
I did the test
Do you label a container before or after putting a substance in the container?
Answers
Answer:
yes so you don't get confused on what the substance is
Explanation:
eg 2021!!!!!
11. One similarity between cell receptors and antibodies is that both?
1. Are specific in their actions because of shape
2. Are produced by nerve cells
3. Are involved in digestion
4. Slow the rates of chemical reactions
Answers
Answer:
joe
Explanation:
mumejejejejeejejejejejjejejeejhehehehe uh deiehhde0e irk e
Based on the energy flow between trophic levels in an energy pyramid how much energy would be expected to be found at the secondary consumer level in this pyramid
Answers
Answer:
100J of energy is transferred to the secondary consumers
Explanation:
According to the second law of thermodynamics, energy transfer from one trophic level to another is not usually a 100% transfer of energy. This is because the organisms at each trophic level use energy derived from food substances to carry out its activities.
Only about 10% of the energy obtained at each trophic level is transferred to the next trophic level.
This implies that only about 1000J of energy is transferred to the primary consumers and 100J of energy is transferred to the secondary consumers.
Why do cells need to replicate their DNA?
Answers
Answer:
Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
Explanation:
DNA is the genetic material, which is found in every living cell. The DNA is made up of a pentose sugar, nitrogenous base, and phosphate backbone.
DNA is a genetic material that transmits the information from parent cell to daughter cell using DNA replication.
DNA replication is an essential process in which the daughter cells inherit information from the parent cell.
Cell division is a process through which a DNA copies its genetic material and delivers it to the newly forming daughter cells.
The genetic information in the daughter cell must contain the same set of rules and instructions to carry out the vital processes. The information is present in the original copied form of DNA from the parent.
Thus, DNA replication is necessary for the continuity of life and similar genetic information presents the daughter cells.
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please answer i don’t understand please answer all
Answers
12. Study the image of a chromosome. Which of the following statements about
the chromosome is true?*
chromosome
A. Each half of the chromosome is genetically identical.
B. Once formed, a chromosome always stays in this X shape.
C Each half of the chromosome contains genetically different material
D. The pinched middle of the chromosome is what allows it to split during mitosis.
Answers
Answer:
A. Each half of the chromosome is genetically identical.
Answer:
C
Explanation:
I would say it is C.
Each cell has 23 chromosome (46 in total). 23 is from our mother, 23 from our father. So this would mean the chromosomes are not genetically identical, hence we have variation.
Hope this helps!
Can someone help me pleasee:(
Answers
Answer:
Add some iodine to a beaker containing the sample. If starch is present, the colour of the solution will turn blue-black.
Explanation:
This part of the nucleus is the "noodle soup" form of DNA.
helppp
Answers
Answer:
I think it's chromosome.
Explanation:
A chromosome looks roughly like an X, but it does not maintain it's form. IT floats around and stuff. That's why I think it's chromosome.
What’s metabolism?? Help meh
Answers
The illustrations below show the creation of two different mixtures. Based on this information,decide which conclusion is supported by the evidence you have been given. Only Mixture A resulted in a chemical reaction.Only Mixture B resulted in a chemical reaction.Both Mixture A and Mixture B resulted in chemical reactions.Neither Mixture A nor Mixture B resulted in a chemical reaction.
Answers
Answer:
Explanation:
A restaurant makes three batches of tomato soup using the recipe shown.
Each batch contains a different amount of soup.
Drag numbers to show how much of each ingredient should be used in each batch of tomato soup.
18 of the soup is chicken stock.
14 of the soup is cream.
58 of the soup is tomato puree.
CLEAR CHEC
13. Which statement is true about the process of mitosis? *
A. The process occurs only in plants.
B. The process occurs only in animals.
C. The process occurs in every type of organism.
D. The process occurs only in multicellular organisms.
Answers
The statement 'the process occurs only in multicellular organisms' is TRUE about the process of mitosis (Option D).
Mitosis is a cell division by which a cell produces two genetically identical daughter cells.Conversely, meiosis produces four cells having half the genetic material.Mitosis produces somatic (body) cells in multicellular organisms, whereas meiosis produces germinal cells.In conclusion, the statement 'the process occurs only in multicellular organisms' is TRUE about the process of mitosis (Option D).
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Adapting to Life at Sea: Take a look at this article from Natural History Magazine. Explain the connection between sea snake's diet, the way in which they eliminate nitrogenous waste, and their need for freshwater. Then explain why this makes life (in at least one way) difficult for them in the ocean.
Answers
Answer:
They needs fresh water for drinking purpose.
Explanation:
The Sea snakes favorite food is fish and crustaceans. These sea snakes removes nitrogenous waste in the form of ammonia. They can live in salty water but needs fresh water for drinking purpose. This makes life difficult for sea snakes in the ocean because sea snakes needs fresh water to become hydrated and the sea water is salty which they can't drink so they depends on the rainfall for drinking purpose.
The sea snakes excrete their nitrogenous wastes via cloaca and some of it from the skin.
Sea snake
The snake excretes solid as well as liquid wastes from the cloaca but sometimes the flow of excreta gets disturbed due to change in the osmolarity between the environment and the body. The oceanic water is saline which is responsible for changing the osmolarity.This is making their survival difficult in the ocean.
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A group of your classmates want to see if fertilizer improves plant growth. They set up the following experiment: They planted three different types of plant seeds in three different types of soil. They placed all the planted seeds in either a dark or a light environment. Each plant was given the same amount of fertilizer. In a complete sentence, explain whether or not you think this is a good scientific design. What are two things that you could suggest for them to change in order to improve their experiment?
Answers
Answer:
Since they are trying to test if fertilizer helps, no sunlight, they should give the plants the same amount of light. They should also give the plants different amounts of fertilizer.
P.S. Can you give me Brainliest, please?
Is density useful in identifying unknown substances?
Answers
Answer:
Yes
Explanation:
You can identify an unknown substance by measuring its density and comparing your result to a list of known densities.
Density = mass/volume
When you divide the mass by the volume and compare the density to a list of known densities.
((SIMPLE QUESTION 15 POINTS))
A couple has 5 children. One dies after birth from a genetic disease caused by a lethal gene. The mother, the father, and 3 of the other children have this gene, but not the disease. Why don't they have the disease?
a)They only have one dominant lethal gene
b)They only have one recessive lethal gene
c)They have the same blood type
d)They have X-chromosome
Answers
Answer:
b
Explanation:
Due to climate change, places that used to be colder are now warming up, allowing new invasive species to establish themselves. What is one way that warming conditions are beneficial to invasive species?(1 point)
Warm weather allows animals to travel farther and longer because they do not need to hibernate for winter.
Warming leads to longer life spans for the animals because none die due to exposure to the cold.
There is more food and shelter available since the growing season is year round.
If the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
Answers
(Q1)An introduced species is not necessarily harmful to the environment; an invasive species has a negative effect.
(Q2) the number of species in a community
(Q3) If the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
(Q4) It reduces biodiversity by reducing successful mating in native species.
(Q5) Large because it has led to several significant changes, including new invasive species and loss of natives.
Explanation:
i just did the quick check
Warming conditions are beneficial to invasive species because if the location used to be too cold for non-native species, it is now warm enough to allow them to exist. Option D is correct.
What are invasive species?When species move and establish in a new area, out of their original distribution range, they might be considered exotic or invasive, according to their
• reproductive rate,
• population growth, and
• interaction with native species.
When a new species stablishes and overgrow in a new area, negatively affecting native ecosystems dinamics, they are considered invasive species.
The introduction of invasive species has ecological, economic, socio-cultural consequences.
In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-.
These factors favor their establishment because they are adapted to surviving under harder conditions.
They interact with native species by
Competing for resources such -water, place, radiation, exposure, shelter, food, etcetera-.Predating on native species, consuming a wide diversity of prey items, and in many cases, there are no native species that may prey on them.They provoke significant damages in the structure of native ecosystems, causing severe damage in endemic species.
They produce ecological imbalances in the trophic chains and the dynamics of communities. Invasive species are uncontrollable.
Areas that get warmer due to climate change provide a propicious environment for invasive species to stablish and overgrow.
Temperature is not a limmiting factor any more for these species, so they can move and stablish in these areas.
Warming conditions are beneficial to invasive species because if the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
Option D is correct.
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Compare the chromosomes in a skin cell to a muscle cel Include an explanation of how the two types of cells can be different
Answers
Answer:
Skin cells are the epidermal cells which all of the organs In the body by forming a tissue called skin
Explanation:
Muscle cells have many mitochondria which provide a lot of energy during contraction and relaxation of the cells.
Can some please help? I’ll give brainliest
Answers
Answer: I need the points sorry
Originally the Continental Drift Theory was not well received by other scientists. Why?
A. There was a competing theory at the time which was more believable.
B. There was no data showing the continents ever moved.
C. The scientists didn’t know the force responsible for moving the continents.
D. The scientist presenting the data was unreliable.
Answers
Answer:
C
Explanation:
The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.