Most energy enters ecosystems in the form of sunlight. t or f
Answer:
True
Explanation:
on Edge
Natural selection causes what to occur?
Answer:
Natural selection causes populations to become adapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.
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Explanation:
Answer:
(I'm not sure if this is what you mean) It causes reproduction, heredity, variation in physical characteristics and variation in number of offspring per individual to occur.
Explanation:
If the four conditions (reproduction, heredity, variation in physical characteristics and variation in number of offspring per individual) change, then a natural selection occurs.
Describe the relationship between ATP and ADP?
Answer:
If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. The energy holding that phosphate molecule is now released and available to do work for the cell. ... When it's run down, it's ADP.
Answer:
Think of it as the “energy currency” of the cell. If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. ... When it's fully charged, it's ATP. When it's run down, it's ADP.
Explanation:
Identify a human disorder with developmental limitations that results from changes in chromosome number. Explain how nondisjunction leads to changes in chromosome number.
Answer:
The Klinefelter syndrome is caused by the presence of one extra X chromosome (i.e., XXY males). Developmental limitations of this genetic disorder include: reduced muscle mass, neurodevelopmental problems, hypogonadism, etc. Abnormal chromosome numbers (known as aneuploidies) are usually caused by the nondisjunction of homologous chromosomes during Anaphase I or the nondisjunction of sister chromatids during Anaphase II
Explanation:
The Klinefelter syndrome is the most common sex chromosomal disorder in males, which is caused by the presence of an extra X chromosome (i.e., males with a XXY karyotype). This genetic disorder has many effects on development, including small testes (hypogonadism), weaker muscles, longer arms and legs, larger breasts than normal, infertility, immature development of secondary male sex features, cognitive problems (e.g., speech and language delays), etc. A chromosomal disorder occurs when chromosome pairs or chromatids fail to separate during meiosis, thereby producing cells (gametes) with more or fewer chromosomes than normal, a phenomenon known as aneuploidy.
suggest how the activity of the decomposers can affect the productivity of the food chain
Answer:
Decomposers are fungi (bacteria) that break down plants. This would affect the food chain because there will be smaller food molecules - meaning, not enough food.
Which of these describes how traits are shown on a branching tree diagram?
All the traits developed at the same time.
The traits developed in organisms in random order.
Traits lower on the tree developed before traits higher on the tree.
Traits higher on the tree developed before traits lower on the tree.
Answer:
C
Explanation:
What is something from our unit on heredity that you think you will remember one year from now?
what is energy? HEJSIDNCIF
Answer:
energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.
Explain the 3 graphs about the pattern of natural selection on polygenic traits.
Answer:
Directional selection, stabilizing selection and disruptive selection are three types of natural selection
Directional selection
In population genetics, directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype
stabilizing selection
Stabilizing selection is a type of natural selection in which the population mean stabilizes on a particular non-extreme trait value. This is thought to be the most common mechanism of action for natural selection because most traits do not appear to change drastically over time
disruptive selection
Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. In this case, the variance of the trait increases and the population is divided into two distinct groups.
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discuss the stages of the cell cycle mechanism that regulate it and how this cycle is related to the growth and maintenance of organisms
Answer:
The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.
Cyclins regulate the cell cycle only when they are tightly bound to Cdks. To be fully active, the Cdk/cyclin complex must also be phosphorylated in specific locations. Like all kinases, Cdks are enzymes (kinases) that phosphorylate other proteins. Phosphorylation activates the protein by changing its shape.
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Hi can you make this sound like its your own words? Thank you! :)
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
"Revere knows his task is dangerous and requires the utmost in terms of celerity, discretion, and energy. He comes across as a man impatient to carry out a mission that will save lives and push back against British tyranny, a man who will let nothing stand in his way."
Answer:
easy !
Explanation:
An antibiotic interferes with a ribosome's ability to function properly. What effect would taking an antibiotic have on your cells?
A)
Transcription would be affected
B)
DNA replication would be affected
Protein synthesis would be affected
D)
Waste would compile within the cells
Answer:
c
Explanation:
took the quiz on usatestprep
Which feature suggests that a substance is basic?
The pH is less than 7.
The pH is 7
The pH is 0.
The pH is greater than 7.
Answer:
The ph is greater than 7.this is bascic
Which statement best describes why energy is necessary for organisms to grow and survive?
O Work requires energy.
O Nonliving things require energy.
O Energy is the ability to move or change.
O Energy requires fuel.
What are the base pairs that are found in DNA?
James is working with the lac operon of Escherichia coli (E. Coli). He places the bacteria on a plate of growth media. The lac Operon of E. Coli is shown. Based on the current understanding of this operon, which hypothesis would be useful for James to test?
Answer:
A.
Explanation:
Lac Operon is defined as an operon that is used by E.coli for transporting and metabolizing lactose.
Allolactose is a disaccharide like lactose, that binds to lac repressor and restrict its binding with DNA. It triggers expression of a operon or gene.
So, adding allolactose to the bacterial growth media, block the activity of lac repressor and trigger the activity of bacteria to metabolize the sugar lactose.
Hence, the correct answer is "A."
Based on the current understanding of this operon hypothesis would be useful for James to test addition of all lactose to the bacterial growth media should increase the speed at which the bacteria metabolize the sugar lactose. Thus, option A is correct.
What is the mode of reproduction of bacteria?The bacteria reproduces through the process of asexual reproduction and the amoeba reproduces through the process of binary fission. Reproduction is defined as the process carried out by the living organisms and during the process of reproduction the living organisms produces their own young ones and feed them. Reproduction is the supreme quality of living things.
There are two types of reproduction and these are sexual and asexual reproduction. The process of reproduction in which two parents are involved is said to be sexual mode of reproduction and the process of reproduction in which only single parent is involved in known as asexual mode of reproduction. The example of asexual reproduction are budding, fragmentation, spore formation, and binary fission.
Therefore, Based on the current understanding of this operon hypothesis would be useful for James to test addition of all lactose to the bacterial growth media should increase the speed at which the bacteria metabolize the sugar lactose. Thus, option A is correct.
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Alexis knows that different forms of water can affect erosion differently. She wants to build a model to compare different forms of water.
How could she build a model to compare how different forms of water cause erosion on a hill?
1. Obtain two identical containers and dry sand.
2. Shape equal amounts of sand into a
(A) slope on the side of each container
(B) flat layer in each container
3. Spray water on the sand in one container. The sprayed water represents
(A) a flowing river
(B) ocean waves
(C) rainfall
4. In the other container,
(A) do not add water. this represents the lack of water erosion
(B) place ice cubes to melt on the sand. this represents snow or glaciers
Analyze differences between the two containers.
Answer:
1. Obtain two identical containers and dry sand.
2. Shape equal amounts of sand into a "slope on the side of" each container.
3. Spray water on the sand in one container. The sprayed water represents "rainfall" .
4. In the other container, "place ice cubes to melt on the sand. This represents snow or glaciers." .
5. Observe and record the changes in the sand.
6. Analyze differences between the two containers.
Explanation:
Mine hasn't been graded yet but I'm pretty sure this is the right answer. I'll come back once it's graded and say.
The study of groups of organisms belonging to the same species living together is called.
Answer: Population
Explanation: A population is a group of organisms of the same species that live in the same area at the same time. Population ecologists study the size, density, and structure of populations and how they change over time.
At which stage chiasmata formation occurs?
Answer:
prophase The chiasmata become visible during the diplotene stage of prophase I of meiosis, but the actual "crossing-overs" of genetic material are thought to occur during the previous pachytene stage
Explanation:
- Why was the shift to farming a big deal?
Answer:
Bowles and Choi suggest that farming arose among people who had already settled in an area rich with hunting and gathering resources, where they began to establish private property rights. When wild plants or animals became less plentiful, they argue, people chose to begin farming instead of moving on.
Explanation:
Where do your inherited genes come from?
alleles
parents
gametes
offspring
Which do all cells need in order to function?
oxygen
water
carbon dioxide
offspring
Answer:
oxygen
Explanation:
Answer:
A
Explanation:
oxygen
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The picture below shows a satellite image of the oceans on Earth. Picture shows a color-coded map showing the height of the world's ocean surfaces at a particular time. Purple areas correspond to approximately 10 centimeters below normal. Light blue areas correspond to approximately 2 centimeters below normal. Green areas correspond to approximately 3 centimeters above normal. Red areas correspond to approximately 10 centimeters above normal. In this map, area A is colored red and area B is colored purple. Which of these statements is correct about the ocean at Location A and Location B? The waves at Location A have low frequency. The waves at Location B have low frequency. The waves at Location B are abnormally high. The waves at Location A are abnormally high.
Answer:
I'm gonna go with the fourth one
The waves at Location A are 10 centimeters above normal, which is considered abnormally high.
The image shows a color-coded map of the ocean, with red areas indicating that the ocean is 10 centimeters above normal, purple areas indicating that the ocean is 10 centimeters below normal, and so on. Location A is colored red, which means that the ocean at that location is 10 centimeters above normal. This is considered abnormally high, as the normal range for ocean height is 2-3 centimeters above or below normal.
Location B is colored purple, which means that the ocean at that location is 10 centimeters below normal. This is not considered abnormally high, as it is within the normal range for ocean height.
Therefore, the only statement that is correct about the ocean at Location A and Location B is that the waves at Location A are abnormally high.
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what characteristics do you see in the image?
can you help me with this?
can you help me with this?
From the diagram, label the following words on the diagram. write the shape and colour for the following terms.
A) Deoxyribose
B) phosphate
C) nitrogenous base
Answer:
answer
Explanation:
A)-blue regtancle
B)-bluish/green circle
C)-purple pentagon
Why do scientists find different fossils in different rock layers?
Different organisms live at different depths underground?
What would you expect to happen if your blood sugar was 120mg/100mg?
Answer:
The 120 miligram per 100 milliliter of the sugar suggests that the blood is hyperglycemic.
Explanation:
the hyperglycemia is the condition, in which the blood sugar level increases than the normal blood sugar levels. The main cause of the insulin is decreased function of the insulin hormone. The condition, in which the insulin is not working properly and is unable to metabolise the sugar (glucose) present in the blood is known as Diabetes.
So, the given case can be a result of diabetes.
Cross a pea plant that has green round peas(GGRr) with a pea plant that has yellow wrinkled peas (ggrr).what is punnett square and determine the genotypes.
Answer:
When crossing a pea plant that has green round peas (GGRr) with a plant with yellow wrinkled peas (ggrr) the genotype of the offspring will be GgRr (50%) and Ggrr (50%).
Explanation:
In pea plants for the trait:
Pea color: green is dominant and yellow is recessive. Pea shape: round is dominant and wrinkled is recessive.Parents:
Green round peas GGRr
Yellow wrinkled peas ggrr
For the cross GGRr X ggrr the Punnett Square shows the possible genotypes in the offspring.
Alelles GR GR Gr Gr
gr GgRr GgRr Ggrr Ggrr
gr GgRr GgRr Ggrr Ggrr
gr GgRr GgRr Ggrr Ggrr
gr GgRr GgRr Ggrr Ggrr
The result of this cross shows the probable genotypes and phenotypes in the offspring of pea plants.
Genotypes :
GgRr 50%
Ggrr 50%
Phenotypes:
Plants with green and round peas 50%.
Plants with green and wrinkled peas 50%.
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Answer:
2. Dominant 3. Recessive 4. H---zygous 5. Heterozygous 6. Hybrid 7. Purebred
Explanation:
2
Upper case letters always represent dominant alleles.
3
Lower case letters always represent recessive alleles.
4
"H---" means same, if you see too upper case letters or two lower case letters it's H---zygous.
5
"Hetero" means different, if you see one upper case and one lower case or two different letters, it's Heterozygous.
6
A hybrid is something with pieces of two different things, like hybrid cars that get energy from gas and heat.
7
I can't think of a way to memorize the word "purebred". Sorry.
what organ is respond for the absorption of nutrients from food in the digestive tract?
Answer:
the small intestine absorbs useful material from food and lets it out into the blood stream
Explanation:
