Answer:
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3)
Explanation:
In Amish populations, we see a much higher amount of a specific type of dwarfism compared to the rest of the human population. Which term is best applies to this situation?
Both of these
Genetic Drift
Founder Effect
None of these
Answer: Both of these
Explanation: trust me
During a study session about evolution, one of your fellow students remarks "The giraffe stretched its neck while reaching for higher leaves, its offspring inherited longer necks as a result, which statement is most likely to be helpful in correcting this students misconception?
a) characteristics acquired during an organisms life are generally not passed on through genes
b) spontaneous mutations can result in the appearance of new traits
c) only favorable adaptations of survival value
d) disuse of an organ may lead to its eventual disappearance
Answer: Characteristics acquired during an organism's life are generally not passed on through genes.
Explanation:
The most common misconception between students which can be corrected is that the characteristics acquired during an organisms life are generally not passed on through the genes. Thus, the correct option is A.
What are acquired traits?Acquired traits or characteristics are the non-heritable changes in the function or structure of a living organism which is caused after birth and was absent before this. Occurrence of acquired traits could be due to disease, injury, accident, deliberate modification, variation, repeated use, or other environmental influence.
For example, the giraffe stretched its neck while reaching for the higher leaves but her children does not get a long neck by birth however this character has been fixed with time because of the repeated use of the neck for food.
Therefore, the correct option is A.
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Which of the following factors would make the smallest contribution to determining the climate of an ecosystem?
a.
precipitation patterns
b.
ocean currents
c.
geographic features such as mountain ranges
d.
magma under the earth's crust
Answer:
Latitude. ...
Elevation. ...
Ocean Currents. ...
Topography. ...
Vegetation. ...
Prevailing winds.
PLEASE HELP I NEED HELP (Plant related / Project stuff)
Answer:
B, D, A, E, C
Explanation:
1. environmental factors
2. growth
3. adaptation
4. organism
5. genetic factors
Will this process below ensure with certainty that the offspring will retain their needles? Explain your answer.
Chastagner emphasizes that homeowners can minimize needle shedding by keeping their displayed trees well-supplied with water. In fact, when he has set up trees for research in early December and kept them watered, some species, like noble and Nordmann fir, have gone even three months with only minimal shedding.
Answer:
I'm in school I'll help you when get home around 4:30
Suppose 10,000 units of energy are available at the level of the plants . How many energy units would be passed from the frog to the snake ? A 100 units 10 units C 1,000 units D 10,000 units
Answer:
10 Units
Explanation:
If you makes an energy pyramid the energy from the plant to the organisms would be
plant (10,000) --> grasshopper (1000) --> frog (100) --> snake (10) --> eagle (1)
If 10,000 units of energy are available at the level of the plants, then one can estimate that the amount of energy available at the level of the frog is 1000, and then at the level of the snake it is 100 kJ, which is in option A.
The transfer of energy between trophic levels is known as energy flow, and in an ecosystem, the primary producers, such as plants, are at the first trophic level, followed by the primary consumers, such as herbivores like the frog, at the second trophic level. The secondary consumers, such as predators like the snake, occupy the third trophic level, as here the third one is the snake, and it will get 10% of the frog.
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Can y’all help me with this one please :(
Answer:
A. Initially, plankton & kelp populations would increase
Explanation:
what was explained by darwins theory of biological evolution
Answer:
When Organism A has a trait that negatively impacts it, or lacks a trait which would positively impact it, then said organism perishes, and its genes are not passed onto the next generation. On the flip side, when Organism B has a trait that positively impacts it, or lacks a trait that would negatively impact it, then the organism thrives, and its genes are passed onto the next generation.
Therefore, the next generation receives genes from Organism B and does not receive genes from Organism A. So, the next generation has traits that positively impact it and lacks traits that would negatively impact it, thus evolving according to Darwin.
Explanation:
What was explained by it? Evolution. But how did it explain evolution? That is in the answer.
when are chromosomes (dna) copied?
Answer:
Interphase begins with G1 (G stands for gap) phase. During this phase, the cell makes a variety of proteins that are needed for DNA replication. During S phase, which follows G1 phase, all of the chromosomes are replicated. Following replication, each chromosome now consists of two sister chromatids.
Have a good day. :)
Answer:
Chromosome replication
Explanation:
Chromosome replication is a key event during the cell cycle that must be completed before a cell divides. To reproduce successfully, every cell must replicate its chromosome and distinguish these sister chromosomes from one another.
Who ever Answer this right will get brainliest
Answer:
See Explanation
Explanation:
Pathogens are disease causing organisms in the body. They attack diverse cells, organs, tissues and systems in the body thereby causing them to malfunction (to become diseased).
Antibodies are the body's natural protective mechanism against pathogens. Antibodies engulf these pathogens and digest them. Then they produce certain chemicals called antitoxins which now destroy the toxins produced by these pathogens in the body.
Also they activate the systems involved in fighting pathogens by punching the cell wall of invading pathogens.
how does rock turn into soil
Answer:
Rocks turn into soil through the process of weathering.
Explanation:
Weathering is when rocks are broken down into smaller pieces
Please help asap
1. How do radiation, conduction, and convection affect the atmosphere?
2. How does greenhouse effect warm the earth?
Answer:
1. radiation, conduction and convention all play a roll in moving heat between earth's surface and atmosphere because since air is a poor conductor, most energy transfers by conduction occuring right near the earth's surface. Conduction directly affects air temperature only a few centimeters into the atmosphere. convection works to heat the troposphere. Durring the day, the sun's radiation heats the earth's surface. the land becomes warmer than the air. Air near the Earth's surface is essentially warmed by both radiation and conduction.
The transfer of heat is responsible for many of the events that occur on Earth. Which of the following events is most directly caused by radiation from the Sun?
the circulation of air
the warming of Earth’s surface
the movement of ocean currents
the movement within Earth’s mantle
Answer:
the circulation of air
Explanation:
air is from a sun
What is the difference between a missense mutation and a silent mutation?
Danke schon! Ilysm <3
Answer:
Answer is in explanation
Explanation:
A silent mutation is a mutation in which a single nucleotide base is changed, but that change does not effect the amino acid sequence. A missense mutation is a point mutation in which a single nucleotide is changed, resulting in a codon that codes for a different amino acid.
The mutation is caused by the exchange of one base pair if no change in the overall protein (silence mutation), if there is change in one amino acid (missense mutation).
What is a silent mutation?A mutation is a difference in the DNA sequence of an organism.
Silent mutations happen when the difference of a single DNA nucleotide within a protein-coding portion of a gene does not influence the sequence of amino acids and the protein.
Thus, silent mutation has no change whereas stop mutation leads to termination of protein.
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When uncontrolled, the cell cycle becomes cancer. It forms lumps called..?
Answer:
Tumours are groups of abnormal cells that form lumps or growths. They can start in any one of the trillions of cells in our bodies.
Explanation: (:
Answer:
It forms lumps called tumors.
Suggest reasons for the color patterns of the frog and its lack of color on the ventral surface.
Answer:
To save itself.
Explanation:
The color patterns of the frog and its lack of color on the ventral surface allows the frog to protect itself from their predators because the frog changes its colour and the predators are unable to see them. The color patterns of frogs and their lack of color on the ventral surface allow frogs to escape from their predators. If the frog does not change its colour, the predators will see them and the frog will be catch by its predators and feed on them so this is the reason that frog changes colour or the presence of colour patterns.
Which surface was warmer during the month of October? The pond or the sidewalk?
Answer:
The pond was warmer during the month of October.
Explanation:
Water has a high specific heat capacity, therefore more heat is required to change its temperature. This is why aquatic life is able to stay alive even when temperatures drop drastically. The sidewalk however, will more than likely adapt to the temperature change quickly as concrete does not have a very high specific heat capacity.
I need help on biotics and factors
Answer:
Biotic creatures are living things, like animals, plants, and cells
abiotoc are the enviroment they live in like, forests, desserts and bodies of water
Explanation:
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What do decomposers leave behind after getting their energy?
А
chlorophyll and vitamins
B
carbon dioxide and water molecules
C С
elements like carbon, nitrogen and phosphorus
D
energy-rich carbohydrates
Q
Answer:
Carbon and nitrogen
Explanation:
Decomposers gain energy and nutrients and energy by breaking down dead organisms and animal waste. Through that process they release nutrients. Which are carbon and nitrogen. To give nutrients to the ecosystem.
Answer:
carbon and dioxide,nitrogen and phosphorus
Explanation:
it's right 100% did the ap3x quiz
c) Explain why wheat is not able to grow well in
nitrate poor soil.
Answer:
When soil available nitrogen is low, yield and protein content will be low. As nitrogen is applied beyond these levels the wheat plant will no longer use it to
Explain how biotechnology has used the idea of ‘cut and paste’ when it comes to biotechnology *not multiple choice question*
Answer:
Biotechnology, the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering. ˗ˏˋ ❤︎ ࿐
Explanation:
. What is the main function of an enzyme?
A. They lower the activation energy of a reaction by binding the substrate
B. They raise the activation energy of a reaction by binding the substrate
C. They lower the amount of energy present in the substrate
D. They raise the amount of energy present in the substrate
E. They are the main substrates in a biochemical reaction
Answer:
Here are some importance of enzymes I have brought for you :-
1. Enzymes create chemical reactions in the body.
2. They actually speed up the rate of a chemical reaction to help support life.
3. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.
Help me please! Do 1,2,3 by filling in the blank!!!!
and no website
What is the relationship between the rock cycle and the plate tectonics?
Answer: The metamorphic rocks can erode into sedimentary rocks which can turn into igneous rock. Metamorphic rocks in the rock cycle is driven by tectonic plates.
Explanation:
A person who is interested in finding a cure for diabetes, in which the pancreas does not produce insulin, might pursue a career in A.Endocrinology B.Gene therapy C.Neuroscience D.Sports medicine 2 See answers
Answer:
The answer is: A.
Explanation:
A person who wants to find a cure for diabetes might pursue career in endocrinology. Endocrinology is a branch of biology and medicine dealing with endocrine system and diseases that occur due to hormonal disorders, and disorders of the hormone secretion. The disorder of insulin secretion hormones causes diabetes, and this hormone produces pancreas. In addition, endocrine disorders can be, growth disorder in children, adrenal gland disorders, testosterone levels disorder, etc.
Can someone plz help
The answer for your question is B
3
7
Identify the elements of natural selection by completing the stage of the cycle.
Reproduction
Natural
Selection
Answer:
This is kinda confusing
Explanation:
Reproduction > Natural Selection > Adaptation/Evolution
An eastern screech owl, a carnivore, might compete with which organism most intensely for resources?
A. hawk (secondary consumer)
B. mountain lion (secondary consumer)
C. wren (primary consumer)
D. mouse (primary consumer)
Answer:
The answer is A
Explanation:
Let us take a look at the owl, it is a kind of carnivore, so it must be a secondary consumer(btw, primary consumers are herbivores). So we can eliminate answer C and D. The competition between the same species for this situation is the most intense one, so we can eliminate answer B as well, since hawk and owl are all birds. So the answer is A.
Hope this will help❤️
I neeed help plsss hurry
Answer:
Genotype for AB: IA and IB
Genotype of for O: ii
Explain, using complete sentences, the trend in levels of blood glucose from 11:00 a.m. to 10:00 p.m.
In your answer use the following terms:
[Feedback mechanism] [stimulus] [response] [positive or negative]
Answer:insulin and glucose