Answer:
The sun
Explanation:
Poison dart frogs live in the rainforest. They produce a poison by eating toxic fire ants. The only known predator is a snake, Liophis epinephelus. Which of the following factors is most likely a density-independent regulator of population growth of poison dart frogs in the rainforest?
Answer:
a possible answer would be the population of frogs stays up because of predators not eating/ or not wanting to eat the poisonous frog because of patterns or because the frogs kill their predators. hope this helps????
Explanation:
Clear cutting the rain forest
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The picture represents the excretory system.
Which is represented by the X?
nephron
ureter
bladder
urethra
Answer:
I think it's that it's ureter
Answer: Ureter
Explanation:
Ureter can be defined as the structure which is a part of excretory system of the body. They are made of smooth muscle fiber that functions by propelling the urine from the kidney to the urinary bladder.
It is usually 25-30 cm long and 3-4mm wider in the dimensions.It is lined by the urothelium which is a type of transitional epithelium and an extra layer of smooth muscle that favors the peristalsis.
The correct answer is option B
Why did Mendel use pea plants in his experiments? A. They are haploid organisms.
B. They have no chromosomes.
C. They self-fertilize.
D. They have no recessive traits.
Answer:
C. They self-fertilize
Explanation:
A is wrong: they are diploid
B is wrong: it definitely has chromosomes
D is wrong: since it has chromosomes it can potentially have recessive traits
Plant and animal cells both have cell membranes and nuclear
membranes. However, plant cells have a structure that animal cells
do not known as a:
Plant and animal cells both have cell membranes and nuclear membranes. However, plant cells have a structure that animal cells do not know as chloroplasts.
Is the chloroplast in plant and animal cells?
Chloroplasts are found in plant cells, but not in animal cells. The purpose of the chloroplast is to make sugars that feed the cell's machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars.
Do both plant and animal cells have cytoplasm a membrane and a nucleus?Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria.
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Viruses such as avian (bird) flu and swine flu that mutate and can spread from animals to human populations are known as what? A. Transmuting viruses B. Zoonoses C. Vectors D. Epidemics
Answer:
B
Explanation:
caused my animals and transfers to humans
Answer:
B. Zoonoses
Explanation:
Zoonoses are diseases typical of animals that can be transmitted to humans and vice versa. The word has Greek origin, where zoon means animal and nosos means disease. Usually these diseases are caused by parasites hosted on animals. However, zoonoses can also be caused by microorganisms such as viruses, bacteria and fungi.
Classify the industries as primary secondary or tertiary
Answer:
The answer is explained below.
Explanation:
Primary industries is a term that refers the sector of industries related to natural resources, such as fishing.
Secondary industries are the ones that are related to processing activities, such as textile manufacturing.
Tertiary industries are the ones that refer to services or goods, such as banking and insurances.
How do animals store energy
Answer:
Animals store their glucose subunits in the form of glycogen, a series of long, branched chains of glucose.
Explanation:
ANSWER:
Animals store their energy in glycogen form in the body. This energy has been stored in the body for later use to perform the various life functions.
EXPLANATION:
Animals obtain their energy from the food they take in so that the various metabolic processes of the body can be performed. When animals eat food, the glucose present in food is broken-down by "cellular respiration" into an energy molecule known as ATP. When "excess ATP and glucose" are present, these are converted to glycogen by the liver and stored in the body for later use.On the ph scale which value is considered neutral
A-7
B-5
C-11
D-2
Answer: On a ph scale its measures how acidic or basic the substance is and it ranges from 0-14 the smaller numbers are acidic and the bigger numbers are basic. The neutral number which is between 0-14 is 7 and a example of a substance that is neutral is distilled water.
Explanation:
Answer:
A-7 is considered neutral on the PH scale
evesa
SOS
-) Some substances are absorbed into the capillaries by active uptake.
0 Explain why active uptake is sometimes necessary
Answer:
Active uptake (which I think you mean active transport) is important when the concentration gradient is against that of a certain substance, so it doesn't cross the membrane through diffusion or passive transport. It is sometimes necessary if a substance needs to move across a membrane but can't do so due to electrical charge or that there is a substance on the other side of the membrane preventing diffusion.
Explanation:
Final answer:
Active uptake is necessary for substances that cannot passively diffuse across cell membranes because they need to move against a concentration gradient. This requires energy in the form of ATP and is fulfilled by the active transport mechanism using cellular proteins as pumps.
Explanation:
Active uptake is sometimes necessary because some substances cannot be absorbed by passive means due to the fact that they need to move against a concentration gradient from areas of lower concentration to areas of higher concentration. This is where active transport comes into play. Proteins in the cell membrane, often referred to as pumps, utilize cellular energy, generally in the form of adenosine triphosphate (ATP), to move the substance.
Additionally, certain nutrients or ions may not be able to dissolve in the lipid layer of the membrane or are too large to pass through the available channels. In the liver, kidney, and central nervous system, as well as for maintaining electrolyte and nutrient balance, active transport is crucial for the movement of such substances. This transport mechanism is vital for cells to take up nutrients and maintain their function, providing the energy necessary for life-sustaining processes.
What was the purpose of mendel’s experiments with dihybrid crosses
Final answer:
Mendel's experiments with dihybrid crosses were conducted to test the hypothesis of independent assortment. He crossed pea plants with different pairs of traits to determine if these traits are inherited together or independently. The results showed that traits segregate independently during sex cell division, leading to Mendel's law of independent assortment.
Explanation:
Mendel's experiments with dihybrid crosses had the purpose of testing the hypothesis of independent assortment. By crossing pea plants with different pairs of traits, such as yellow round seeds and green wrinkled seeds, Mendel was able to determine if these traits were inherited together or independently.
The results of his dihybrid crosses showed that traits segregate independently during sex cell division. This led to the formulation of Mendel's second law of inheritance, known as the law of independent assortment.
what is not a basic function of a cell
Answer:
To carry out homeostasis
Explanation:
Answer:
Stopping homeostasis from happening
Explanation:
Where does the water in lakes come from? Select the three correct answers.
A. Underground reservoirs
B. Ocean waves
C. Melting snow
D. Surface-water runoff from rain
Apex
Answer: the correct answers are A, C, and D.
Explanation:
if the water is in a lake then no ocean water can reach that lake.
Underground reservoirs and Melting snow and Surface-water runoff from rain are the sources of water in lakes.
What is Water source?Rainfall or melting snowfall is the source of practically all of the water supplies for human civilisation.
Rain that falls on land either evaporates to form streams and rivers or seeps into the soil to form groundwater. The sluggish subsurface movement of groundwater eventually causes it to resurface at the bottoms of lakes and rivers.
Every river or stream drains a certain portion of the land. The watershed of a river refers to the region of land that it drains. Drainage basins are another name for a watershed.
Therefore, Underground reservoirs and Melting snow and Surface-water runoff from rain are the sources of water in lakes.
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how do auxins promote the growth of a tendril around a support
Which continents contain coal fields that provide evidence for continental drift?
Answer:
Eurasia, North America, Africa, and South America
Answer: D
Explanation: I took the test I got a 100%
A new organism has been discovered. This organism has a bilaterally symmetric unsegmented body. It's capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body. Based on this evidence, which phylum would this new animal likely be classified into?
A. Mollusca
B. Echinodermata
C. Nematoda
D. Arthropoda
Answer:
The correct answer option is A. Mollusca.
Explanation:
We are given that a new organism has been discovered which has a bilaterally symmetric unsegmented body and is capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body.
Given the above information, we are to determine which class this phylum can be classified into.
The most appropriate answer for this is Mollusca. Here, the description matches that of a snail.
Other classifications like arthropoda have segmented bodies while echinodermata are symmetrical.
Answer:
A. Mollusca
Explanation:
Mollusca is the second-largest phylum of invertebrate animals. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high
Match each biodiversity problem with the most appropriate solution. reforestation classifying the species as endangered construction of a wildlife corridor bioremediation A large highway prevents yellow-spotted salamanders from traveling to their breeding grounds. arrowBoth A population of channel catfish is threatened by a high level of pollution in a river. arrowBoth The hawksbill sea turtle is in decline because of excessive hunting and exploitation. arrowBoth The loss of vegetation in a forest reduces the survival rate of eastern bluebirds. arrowBoth
Answer:
A large highway prevents yellow-spotted salamanders from traveling to their breeding grounds - Construction of wildlife corridor
The hawksbill sea turtle is in decline because of excessive hunting and exploitation - Classifying the species as endangered
A population of channel catfish is threatened by a high level of pollution in a river - Bioremediation
The loss of vegetation in a forest reduces the survival rate of eastern bluebirds - Reforestation
Explanation:
This biodiversity problem can be solved by Construction of wildlife corridor.
The hawksbill sea turtle is in decline because of excessive hunting and exploitation.This is an example of Classifying the species as endangered.
A population of channel catfish is threatened by a high level of pollution in a river.Bioremediation can be used to solve this biodiversity problem.
The loss of vegetation in a forest reduces the survival rate of eastern bluebirds.This is an example of Reforestation
What are wildlife corridor?Large bridges covered with trees and shrubs that go over freeways for wildlife to cross are known as wildlife corridors. These wildlife corridors are being created to let let wildlife move safely from one area to the next.
What are endangered species?An endangered species is a species that is very likely to become extinct in the near future. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species.
What is bioremediation?Bioremediation broadly refers to any process wherein a biological system, living or dead, is employed for removing environmental pollutants from air, water, soil, flue gasses, industrial effluents .
What is reforestation?Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation.
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Which of the following is true of conifers?
The sporophytes grow directly from the gametophyte
The spores release from the gametophyte
The gametophytes grow directly from the sporophyte
The spores release from the male cones
I NEED HELP ASAP
Answer:
The gametophytes grow directly from the sporophyte - third choice
Answer:
The correct answer is The gametophytes grow directly from the sporophyte.
Explanation:
Conifers are a group of plants that belong to what is called Pinophyta.
They abound in quantity in cold areas although many different types of this plant can also be found in tropical areas.
They are formed by live gemnosperm plants, this means that their seeds do not form in closed cavities but are "naked". These seeds are evergreen, this means that their leaves will not fall throughout the year and usually live for more than two years or produce other seeds again.
Gametophytes are haploid plants that are usually located in or below the soil and are responsible for producing gametes.
These grow directly from the sporophyte, which is the phase in which a plant reproduces by spores.
So we can say that the correct answer is The gametophytes grow directly from the sporophyte.
Which process produces two genetically identical diploid cells?
Answer:
Meiosis II
Explanation:
the process is similar to mitosis, though its genetic results are different.
Answer:
The correct answer is - mitosis.
Explanation:
Mitosis is one of the processes of the life cycle. The mitosis is a cell division. That takes place in somatic cells of other cells of the body except for gonad cells.
Mitosis is the process involves the division of parent cell into two genetically same or identical cells with the exact same number of chromosomes. It produces diploid daughter cells that mean 2n.
Thus, the correct answer is - mitosis.
What happens when a population is in hardy-Weinberg equilibrium?
A. mutations are common
B. Organisms produced of organisms produced no offspring
C. Allele frequency is stable
D. There are infinitely alleles
Answer:
C; Allele Frequency is stable.
Explanation:
When a population is in Hardy-Weinberg equilibrium, there are five conditions within that: 1) no mutations, 2) random mating among organisms, 3) no gene flow (meaning no exchange of alleles among different populations through either immigration or emigration), 4) large population size and 5) no natural selection. If there can be no mutations in the alleles, no gene flow and no natural selection, then the allele frequencies of a population in Hardy-Weinberg equilibrium must be stable with no fluctuations.
Answer:
C. Allele is stable
Explanation:
6. Through which process is energy transferred to a molecule that the cell can use as fuel for its various activities?
O By the removal of a phosphate group, ADP is converted to ATP.
O By the addition of a phosphate group, ADP is converted to ATP.
O By the linking of nucleic acids, the cell produces DNA.
O By the linking of amino acids, the cell produces proteins.
The process by which energy is transferred to the molecular is by the addition of a phosphate group, ADP is converted to ATP. ( optionB)
What is cellular respiration?Cellular respiration is a complex biochemical process that occurs within cells to produce energy in the form of adenosine triphosphate (ATP).
It involves the breakdown of organic molecules, such as glucose, through a series of enzymatic reactions. Cellular respiration takes place in the mitochondria of eukaryotic cells.
The process through which energy is transferred to a molecule that cells can use as fuel is called cellular respiration.
It involves the breakdown of glucose and other molecules to produce ATP, which is the primary energy currency of cells.
Therefore, the process by which energy is transferred to the molecular is by the addition of a phosphate group, ADP is converted to ATP.
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What are some harmful side affects in the food production
Harmful side affects in the food production:
· climate change
· eutrophication
· acid rain
· biodiversity
What an organism looks like as a result of its genes is called
The look of an organism according to its genes is called as phenotype of an organism.
Explanation:
The genetic makeup of an organism is usually called as the genotype whereas the physical morphological structure of an organism is termed as a phenotype of an organism. The phenotype usually depends upon the genotype of the organism; this genotype is not visible and hence cannot be known easily.
Whereas a phenotype is easily visible. To know the genotype of an organism the unknown organism should be crossed with a true breeding cross.
How does the acidity of soil affect flower growth?
Soil pH can affect plant growth in several ways. Bacteria that change and release nitrogen from organic matter and some fertilizers operate best in the pH range of 5.5 to 7.0 making this the optimum pH range. Plant nutrients leach from the soil much faster at pH values below 5.5 than from soils within the 5.5 to 7.0 range. In some mineral soils aluminum can be dissolved at pH levels below 5.0 becoming toxic to plant growth. Soil pH may also affect the availability of plant nutrients. Nutrients are most available to plants in the optimum 5.5 to 7.0 range. PH can also affect the structure of the soil, especially in clay soils. In the optimum range clay soils are granular and easy to work with. However, if the soil is either extremely acid or alkaline clay, soils tend to become sticky and hard to cultivate.
A pH soil test will tell you whether your soil is within the optimum range or whether it will need to be treated to adjust the pH level. Although the optimum range is 5.5 to 7.0 some plants will grow in a more acid soil and some at a more alkaline level.
PH is not an indication of fertility, but it does affect the availability of fertilizer nutrients. The soil may contain adequate nutrients yet plant health may be limited by an unfavorable pH level. On the other hand, builder’s sand, which is devoid of nutrients, may have optimum pH for plant growth.
Answer:
Asking a question
Explanation:
What does excessive algae on water cause?
When algae cover a river surface, it causes depletion of oxygen in water. This is known as____
Excessive algae on water causes depletion of oxygen in the water, a process known as eutrophication. This occurs when excess phosphorus and nitrogen from fertilizer runoff and sewage lead to the growth of algae, which depletes dissolved oxygen and results in the death of aquatic organisms.
Explanation:Excessive algae on water causes depletion of oxygen in water. This is known as eutrophication. Excess phosphorus and nitrogen from fertilizer runoff and sewage enter aquatic ecosystems and lead to the excessive growth of algae. When the algae die and decompose, it depletes dissolved oxygen, causing the death of aquatic organisms like fish and shellfish. This process is responsible for dead zones in lakes and rivers and massive fish kills.
Please HELP!!! what must be present for active transport to occur?
Answer: ATP
Explanation: Active transport requires energy to occur, hence the ATP is necessary for energy.
Active transport, a biological process, requires ATP (energy source), transport proteins (to move substances), and a concentration gradient (higher concentration to lower concentration). A common example is the sodium-potassium pump in cells.
Explanation:Active transport is a process in cellular biology where substances are moved across cell membranes from an area of lower concentration to an area of higher concentration. This is contrary to passive transport, which moves substances along their concentration gradient (high to low concentration)
For active transport to occur, three things are primarily needed:
Adenosine triphosphate (ATP) - This is the energy source required for active transport. ATP provides the energy necessary to move substances against their concentration gradient. Transport proteins - These act like pumps and are integral in aiding the cell move substances across the membrane. They interact with the substances that need to be transported and use energy from ATP to move them against their concentration gradient. Concentration Gradient - The substance being transported is usually moved from an area of lower concentration to an area of higher concentration. This movement is against the gradient, and thus requires energy.
An example of active transport in cells is the sodium-potassium pump, which moves sodium ions out of the cell and potassium ions into the cell, both against their respective concentration gradients.
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what is a pollutant?
Explanation:
a substance that pollutes something, especially water or the atmosphere
A pollutant is something that makes water or air polluted.
Which part of the plant contains the most cells specialized for photosynthesis?
roots
stems
leaves
flowers
ANSWER:
Leaves of a plant contain cells specialised for photosynthesis. The leaves are called "food factories of plants" because they prepare food for the plants.
EXPLANATION:
Leaves contain chlorophyll which is a "green coloured pigment" that traps sunlight required for making food. The leaves with the help of water transported from roots through the xylem, sunlight and carbon dioxide prepare food for the plants. The food is transported to other parts of the plant through the phloem and oxygen is released by the plants.Answer:
C
Explanation:
leaves
energy is the energy an object has because of its motion.
Potential
Nuclear
Kinetic
Thermal
Answer:
Kinetic
Explanation:
Energy is the ability to do work. There are various forms of energy and energy can be converted from one form to another. Without energy, work cannot be done.
Energy due to the motion of a body is known as kinetic energy.
Potential energy is the energy due to a body in rest.
Thermal energy is produce as a result of heating of a body. Nuclear energy is produced from nuclear reactions.
Answer:
it's kentic energy
Explanation:
The expression 40x2 – 65x + 50 represents the sum of the interior angles of a regular pentagon in degrees. If the interior angles of the pentagon are equal, which expression represents the measure of two angles?
2x2(20 – 32x + 25x2)
2(8x2 – 13x +10)
5x2(8x2 – 13x + 10)
5(3x2 – 8x + 5)
Answer:
2(8x^2-13x+10)
Explanation:
There are 5 angle s in a pentagon and we are assuming are pentagon is a regular one so the angles are all congruent.
Let's let A represent the measurement of one of the those angles in our pentagon.
The sum of our angles in our pentagon would then be A+A+A+A+A or 5A.
But we are also given that this equals 40x^2-65x+50.
So that means 5A=40x^2-65x+50.
If we divide both sides by 5 we can find what one of our angles is in terms of x. So let's do that A=8x^2-13x+10.
So we want to know the sum of two our angles, we want to know what is A+A or 2A. 2A=2(8x^2-13x+10). To obtain that I just multiplied both sides of A=8x^2-13x+10 by 2.
Answer:
5(3x2 – 8x + 5)
Explanation:
It's D on edg 2020
telophase II
prophase II
a period in the life of the cell when it is conducting cell
division
the stage in the first meiotic division in which the doubled
2. chromosomes become visible and the nuclear membrane
disappears
the stage in the second meiotic division in which the
3. chromatid pair becomes visible and the nuclear membrane
disappears
the stage of the first meiotic division when the cell divides
4. into two cells, each containing one member of each pair of
homologous chromosomes
the stage of the second meiotic division when the cell
divides into two haploid cells that become the gametes
M phase
telophase !
5
prophase!
M Phase -1 --a period in the life of the cell when it is conducting cell division
Prophase I -2 --the stage in the first meiotic division in which the doubled chromosomes become visible and the nuclear membrane disappears
Prophase II -3 -- the stage in the second meiotic division in which the chromatid pair becomes visible and the nuclear membrane disappears
Telephase I -4 -- the stage of the first meiotic division when the cell divides into two cells, each containing one member of each pair of homologous chromosomes
telophase II -5 --the stage of the second meiotic division when the cell divides into two haploid cells that become the gametes
I read the whole list of vocab and found the answers myself so here they are and I hope this helps you (:
M Phase - a period in the life of the cell when it is conducting cell division. Prophase II - the stage in the second meiotic division in which the chromatid pair becomes visible and the nuclear membrane disappears.
The M Phase, which occurs during cell division, is the stage of a cell's existence when it divides into two daughter cells. It includes both meiosis and mitosis in reproductive cells as well as both in somatic cells.
The chromatids become apparent and consolidate during prophase II, which takes place in the second meiotic division. Additionally, the nuclear membrane breaks down, enabling additional division.
The second meiotic division's terminal phase is known as telophase II. The cell divides into two haploid gametes that have only one set of chromosomes each.
Prophase I, in contrast, involves the doubling and condensing of chromosomes during the first meiotic division.
The interchange of genetic material between homologous chromosomes is made possible by the nuclear membrane's breakdown.
Thus, these phases are essential to gamete development and meiosis, which produces genetically varied progeny.
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