Invasive species reduce biodiversity levels, create a nuisance, cause economic loss, and disrupt ecosystem equilibrium.
Effects of invasive speciesInvasive species tend to drive away or kill native species.Invasive species reduce the overall biodiversity of plants or animals in the ecosystem.They cause economic loss through the loss of important native species.They create nuisance in the environment and may be costly to get rid of.They affect ecosystem equilibrium by causing species change.They are usually difficult to manage.More on invasive species can be found here: https://brainly.com/question/21452505
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Which of these statements describes Earth's atmosphere?
It includes all living and once-living things.
It is a mixture of nickel and iron, below the mantle.
It is all the salt and fresh liquid water on Earth's surface.
It is the mixture of gases that surrounds Earth’s Atmosphere 
Hello!
The statement which best describes Earth's atmosphere :
It includes all living and once-living things.
These include everything from humans to trees.
Some hormones bind to ion channels on neurons and cause them to open. This would be an example of a:
a. ligand-gated channel
b. mechanically gated channel
c. voltage-gated channel
d. none of the above are correct
The hormones that bind to ion channels on neurons and cause them to open represent an example of ligand-gated channels (Option a).
What are ligand-gated channels?Ligand-gated channels are specific receptors on the cell membrane that bind to different molecules.
This binding can cause a concomitant cellular response such as activating a phosphorylation-associated signaling pathway.
In conclusion, hormones and their receptors are an example of ligand-gated channels (Option a).
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In a phase diagram,which of the following is the term used for a substance held at a temperature and pressure where the solid ,liquid and gaseous states of substance exist simultaneously? A. triple point. B. critical point. C.absolute zero. D. critical temperature
Which of the following substances is responsible for donating H+ ions to act as a buffer when blood PH rises? A. oxygen b.carbon dioxide. C.carbonic acid .d.Carbon monoxide
In a certain plant red flowers are dominant over whote flowers. A plant heterozygous for red and a plant white flower are created. Which of the following is the expected proportion of phenotypes in the next generation? A. 3 red 1 white. B. 1 red 3 white. C. 2 red 2 white d. 4 red 0 white.
If a portion of a strand of DNA bases reads AGCTAGCGT3, what would the sequence of bases on the complementary strand read?,.
Which of the following are specific immune responses (select all that apply.) a. The formation of memory B cells. B. complement proteins binding to and destroying bacteria. C. antibody production. D. endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion
Which of the following is a mass within the ovary that secrets hormones to maintain the uterine lining during pregnancy. A. ovidcut. B.oocyte. C. umbilical cord. D corpus luteum
A myocardial infarction affects which of the following blood vessesls of the heart? A. pulmonary. B vena cava. C.coronary d. Aorta
The correct answers are triple point, Carbonic acid, Antibody production, endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion, Corpus luteum and Aorta.
What is triple point?In a phase diagram, triple point is the term used for a substance held at a temperature and pressure where the solid ,liquid and gaseous states of substance exist simultaneously.
Carbonic acid is a substance that is responsible for donating H+ ions to act as a buffer when blood pH rises.
Antibody production, endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion are specific immune responses.
Corpus luteum is a mass within the ovary that secrets hormones to maintain the uterine lining during pregnancy.
A myocardial infarction affects Aorta blood vessels of the heart.
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what is the significance of test cross
Answer:
The test cross is performed to determine the genotype of a dominant parent if it is a heterozygous or homozygous dominant. On the basis of the results obtained in the ratio of the offspring, it can be predicted that the parent is having which genotype.
Need help with this please
Answer:
WOULD HAVE HELPED IF I HAVE STUDIED THIS TOPIC I AM EXTREMELY SORRY
Explanation:
Is the cell an open or closed system? Explain your answer using at least one example of a cell organelle and its function.
Answer:
In an open system matter and energy can be transferred ·
In a closed system only energy can be exchanged ·
In an isolated system neither matter nor energy can be exchanged · The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system ·
As an open system the cell allows nutrients to enter the cell and waste products to exit the cell ·
The cell does this through the use of a semi-permeable membrane
Explanation:
A cell is an open system. This means that it exchanges matter and energy with its surroundings. For example, a cell takes in nutrients from its surroundings and releases waste products. It also takes in energy from sunlight or food and releases energy in the form of heat or work.
One example of a cell organelle that illustrates the open nature of the cell is the mitochondrion. Mitochondria are the "powerhouses" of the cell, and they produce ATP, which is the cell's main source of energy.
Mitochondria are surrounded by a double membrane, and the space between the membranes is filled with a fluid called the mitochondrial matrix. The mitochondrial matrix contains enzymes that are involved in the production of ATP.
The mitochondrial matrix is also in contact with the cytoplasm of the cell, which is the fluid that fills the cell. This means that the mitochondria can exchange substances with the cytoplasm.
For example, the mitochondria can take in nutrients from the cytoplasm and release waste products.
The open nature of the cell is essential for life. If the cell were a closed system, it would not be able to exchange matter and energy with its surroundings. This would mean that the cell would eventually run out of nutrients and energy, and it would die.
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What happens at the end of translation?
Answer:
Explanation:
Translation ends in a process that called ( termination) .
Termination happens when a stop codon in the mRNA (UAA , UAG , UGA ) enters the A site.
Stop codons are recognized by proteins called release factors,
which fit neatly into the P site (Though they aren't tRNAs ) .
Answer:
Termination
Explanation:
The process of transcription involves creating RNA from a DNA template.
In the last stage of transcription, known as termination, the DNA-RNA hybrid separates from the original strand of RNA. Recognizing the point at which no more bases should be added is necessary for terminating transcription. The DNA sequence needed for termination is known as the terminator and consists primarily of the poly U region. At this point, the enzyme stops adding nucleotides to the developing RNA strand and separates from the DNA template.
This process is used by bacteria in two different ways.
1. Initial termination ( Rho - independent )
In this instance, the transcript strand creates a hairpin shape by creating G-C rich inverted repetitions, which permits the creation of a hair-pin structure at this position. However, the transcription bubble is insufficient to support the DNA-RNA hybrid, and the RNA polymerase is then knocked off.
2. Rho — DEPENDENT
Rho is a protein that is involved in this kind of termination process. The RNA-stimulated helicase Rho factor, which disrupts RNA-DNA hybrids, is ATP dependent. At the rut location, this Rho protein binds to RNA ( Rho utilization site ). Rut has to be free of the ribosome in order to bind Rho. When RNA polymerase stops moving at the rut site, Rho protein catches the polymerase and uses helicase activity to separate the DNA-RNA hybrid.
Whats the correct answer answer ASAP for brainlist
What is special about animals that allows them to be mobile in some way?
They are multicellular.
Their brains are bigger, so they can move.
Their cells lack a rigid cell wall.
They have fur which helps them to run.
The lack of a rigid cell wall is an animal feature that allows them to be mobile in some way.
What is the cell wall?The cell wall is a cellular structure (organelle) that provides support to plant and fungi cells.
Animals are mobile because they do not have this rigid structure that otherwise will hamper their motion.
In conclusion, animals cells do not have cell walls which helps them to be mobile.
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The amino acid chain breaks away from the ribosome and folds into a protein.
The ribosome moves along the mRNA. tRNA molecules bring the amino acids coded for by the RNA from the cytoplasm and begin to assemble them.
The RNA strand leaves the nucleus and travels to a ribosome.
The amino acid chain grows as more amino acids are brought from the cytoplasm.
Select the correct order of steps in the process of translation:
A.
1, 2, 3, 4
B.
2, 3, 4, 1
C.
3, 2, 4, 1
D.
4, 3, 2, 1
The correct order of steps is 3, 2, 4, and 1.
What is translation?It is a process whereby the genetic codes in transcribed mRNA molecules are translated into their respective amino acids.
The steps involved in translation are:
Transcribed mRNA leaves the nucleus and travels to the cytoplasm where it gets attached to the ribosometRNA molecules bring the amino acids coded for by the RNA from the cytoplasm and begin to assemble themThe amino acid chain grows as the mRNA molecules are read by the translation machinery (the ribosome) and more amino acids are brought from the cytoplasm.The amino acid chain breaks away from the ribosome and folds into a protein.Thus, the step is 3,2,4, and 1.
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.
Chromosomes are easiest to move around the cell when they're tightly packed. What is this process called?
evaporating
condensing
mitosis
replicated
Answer:
condensing
Explanation:
Consider having to transport a kilometer-long strand of cooked spaghetti from one end of a wood to the other without causing any harm. It will very likely break if you drag it behind you. Attempting to transport an uncondensed chromosome through the viscous cytoplasm is analogous to this. As with the spaghetti, the answer is to roll it up so you can transport it safely; for the cell, the answer is to condense the chromatin into the chromosomes that are visible during mitosis and meiosis.
Write a letter to congressman about climate change
Answer:
I don't know this sorry
I read in class 8
I think this question is from class 6
Calculate the 12-hour output for this
patient: 645 mL urine, 50 mL
drainage from JP drain #1, 66 mL
drainage from JP drain #2
The Urine output of the patient for the 12-hour period is 63.4 mL/hour.
What is urine output?Urine output is the amount of urine per hour produced by a patient.
To determine the urine output of a patient, the following formula is used:
Urine output = volume of urine produced/time elapsedTotal urine output = 645 + 50 + 66 = 761 mL
Total time = 12 hours
Urine output = 761 mL/12 hr
Urine output = 63.4 mL/hour
In conclusion, the urine output of the patient is determined from the ratio of the total urine output and time taken.
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Frog Dissection
Describe two organ that is also found in human? How is it similar or different from ours?
The two organs found in both frogs and humans are a heart and a pair of lungs.
Frogs vs HumansBoth humans and frogs have hearts. While human hearts have 2 ventricles and 2 atria, the heart in frogs has only one ventricle and 2 atria.
Lungs are present in humans as well as in frogs. The walls of the lungs in frogs are somehow thinner than that of humans. Also, while frogs can breathe through means other than their lungs, humans can only breathe with their lungs.
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Two students were having a discussion about viruses. Student A believes viruses are
not living organisms. Student B believes viruses are living organisms. Which student
is correct and why?
roduce on their own.
Answer:
Student A is correct.
Explanation:
Viruses are not alive. Living things are defined as having cells, and viruses only have a protein coat to protect their genetic material. They are not made out of cells, therefore, they are not alive.
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Explain how the scent of a flower gets to the bee
Answer:
Some flowers use scent to attract pollinators. Scent is a signal that helps pollinators find and select particular flowers. These floral scents are typically a complex mixture of highly volatile compounds and essential oils that flowers emit into the atmosphere. A flower scent's structure, color, and odor are important in attracting pollinators. Flowers can be identical in their color or shape, but no two floral scents are exactly the same because of the diversity of volatile compounds, relative abundances, and interactions.
A pollinator detects a flower's scent and follows the concentration gradient of the chemical producing the scent to the flower. Plant species pollinated by bees and flies have sweet scents and those pollinated by beetles have strong musty, spicy, or fruity odors. Flowers that use scents to attract their pollinators are generally drab in appearance, white or purple-brown to dark red-brown, and exude very strong scents that can be detected at a distances over one kilometer.
The aroma of some flowers can draw pollinators. Pollinators use scent as a signal to locate and choose particular blooms.
Thus, These floral scents are often a complex blend of essential oils and highly volatile chemicals that flowers release into the atmosphere. Pollinators are drawn to flowers by their structure, colour, and aroma, among other factors.
Although the color and structure of flowers may be the same, no two floral odors are exactly alike due to the variety of volatile chemicals, their varying relative abundances, and their interactions.
A pollinator picks up the scent of a flower and travels to it by following the gradient of concentration of the chemical that produces the scent.
Thus, The aroma of some flowers can draw pollinators. Pollinators use scent as a signal to locate and choose particular blooms.
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Which organelle is labeled H?
Answer: H labeled the cell membrane
Which statement describes nutrition and respiration in plants?
A
Plants respire only when they are not undergoing nutrition
Plants respire using a process called photosynthesis
B
С
Plants undergo nutrition and respiration at the same time
D Plants undergo nutrition only when they are not respiring
Answer:
the answer is c
Explanation:
Plants undergo nutrition and respiration at the same time
Sammy is taking notes to study for a test. He wrote out the steps that involve hydrogen during photosynthesis. The steps are shown, but they are not in the correct order.
1 - Water is broken down into oxygen and hydrogen.
2 - Glucose is broken down to be used by plants.
3 - Hydrogen combines with carbon dioxide to form glucose.
4 - Hydrogen enters the plant as part of water.
Which lists the correct order of the steps?
4, 2, 1, 3
4, 1, 3, 2
4, 3, 1, 2
4, 2, 3, 1
Answer: 4, 1, 3, 2
Explanation:
Answer:
choice B
Explanation:
4, 1, 3, 2 because hydrogen comes in as water then is broken down then is turned into glucose and glucose is used in cellular respiration
What percentage of the body’s blood is made up by water?
83%
22%
73%
25%
Answer:
The human male's body is made of around 60% water, while human females are made of 55%. The closest answer you have here is 73.
Answer:
this is the liquid portion of blood plasma is 90% water makes up the more than half total blood volume other 10% is protein molecules included analyse clothing agents is hum system compounds plus other body institutional such as vitamins and hormones
what sugar is found in an atp molecule
The base of an adenine molecule is made of ribose sugar molecules
Which sentence best explains a possible result of climate change on earth
A. In the northern hemisphere, ideal conditions for farming will shift
north.
OB. Extreme heat, flooding, and drought will each increase crop yields.
C. Cold regions will become less appealing to tourism.
D. Invasive plant species will likely lose habitat.
Need help with this please
Answer: movement is always voluntary
Explanation:
Muscles are contractile:
- Contractility is the ability of muscle cells to forcefully shorten. Think of having the ability to flex a muscle.
Muscles are excitable:
- Excitable tissue can conduct or transmit electrical impulses. Basically, it can react to stimulus, which may be delivered from a motor neuron or a hormone. For example, the hormone epinephrine helps muscles to produce force.
Muscles respond to stimulus:
- well since muscles are an excitable tissue, they can react to stimulus. (see answer above)
————————
Muscle movement is NOT always voluntary:
- Some muscle movement is voluntary, which means it is under conscious control. For example, a person decides to open a book and read. Other movements are involuntary, meaning they are not under conscious control, such as the contraction of your pupil in bright light, breathing, blinking, your heart beating, etc.
- Therefore, the correct answer is:
movement is always voluntary
hope this helps :)
Ling made a study chart for science class.
Which organelle accurately completes the chart?
lysosome
cell wall
chloroplasts
endoplasmic reticulum
Lysosomes have lytic enzymes, the cell wall gives support, chloroplasts act in photosynthesis, and the endoplasmic reticulum act during protein and lipid synthesis.
What is the lysosome?The lysosome is an organelle that contains hydrolytic enzymes used to break proteins, whereas the cell wall is a structure that provides physical support to plant cells.
Chloroplasts are plant organelles used during photosynthesis and the endoplasmic reticulum acts during the production of proteins and lipids.
In conclusion, lysosomes, chloroplasts (plant and algae) and endoplasmic reticulum are eukaryotic organelles with diverse functions, whereas the cell wall provides structural support to plant and fungi cells.
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Answer:
lysome
Explanation:
am big smart, trust
Phenylthiocarbamide (PTC), also known as phenylthiourea (PTU), has the unusual property that it either tastes very bitter or is virtually tasteless, depending on the genetic makeup of the taster. There is a single gene which codes for a protein found in our tongues. PTC will bind with the protein if it present and a person will taste it. If the protein is not present, PTC will not bind and a person cannot taste it. The ability to taste PTC is often treated as a dominant genetic trait. The dominant allele, T, causes a person to be able to taste PTC, and the recessive allele is represented as t. Assume that a population is in Hardy-Weinberg equilibrium and 16 individuals out of 100 are unable to taste PTC.
What are the allele frequencies of T and t in this population?
A. The allele frequency of T is 0.80, and the allele frequency of t is 0.20
B. The allele frequency of T is 0.84, and the allele frequency of tis 0.16.
C. The allele frequency of T is 0.00, and the allele frequency of t is 0.40
D. The allele frequency of T is 0.50, and the allele frequency of t is 0.50.
Answer:
B. The allele frequency of T is 0.84, and the allele frequency of t is 0.16.
Explanation:
The Hardy-Weinberg equation is:
p2 + 2pq + q2 = 1
Where:
p = the frequency of the dominant allele
q = the frequency of the recessive allele
1 = the total number of alleles
Given that 16 individuals out of 100 are unable to taste PTC, we can calculate that the frequency of the recessive allele, q, is 0.16. We can then use the Hardy-Weinberg equation to solve for the frequency of the dominant allele, p:
p2 + 2pq + q2 = 1
p2 + 2p(0.16) + (0.16)2 = 1
p2 + 0.32p + 0.0256 = 1
p2 + 0.32p - 0.9144 = 0
(p + 0.32)(p - 2.84) = 0
p = -0.32 or p = 2.84
Since the allele frequencies must add up to 1, we know that p cannot equal -0.32. This leaves us with p = 2.84. Therefore, the allele frequency of the dominant allele is 2.84, and the allele frequency of the recessive allele is 0.16.
Craters on the Moon were created by:
equipment from human explorations.
satellites.
meteorites.
comets.
5x5 the endmonwf fee I'd done lost wvnssjssi
How is a phoshpodiester bond formed?
Explanation:
A phosphodiester bond occurs when two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds
Explanation:
A phosphodiester bond forms when two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds. Phosphodiester bonds are central to all life on Earth,[fn 1] as they make up the backbone of the strands of nucleic acid
Consider the following genotype: Yy Ss Hh How many different gamete combinations can be produced?
In this case, the number of possible gamete combinations that can be produced is equal to six (6).
What is gamete combinations?Gamete combination refers to the possible alleles in different gametes produced by an individual.
In the case of unlinked alleles, there are 6 gamete combinations for these three heterozygous loci (YSH, YSh and Ysh, ySH, ySh and ysh).
In conclusion, the number of possible gamete combinations that can be produced is equal to six (6).
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Part E: Write Your Paper
Write your research using your outline and the research you've collected. Be sure to proofread andrevise your writing to catch any errors in grammar, spelling , logic, or cohesion e. Remember that
you must add a works cited page at the end of your paper to give credit to your sources.
When you have completed your paper, submit it to your teacher along with this activity.
A good sample to use to write your essay about the cure for cancer is:
Define what cancer isMention the harmful things which cancer has causedMention the cure you have for cancerUse supporting details from reputable sourcesMake use of supporting evidenceState how this cure would help to ease the suffering of cancer patients.What is an Essay?This refers to the academic writing that is meant to inform, educate, entertain, or persuade a reader about a particular point of view.
Hence, we can see that based on the fact that you are writing an essay about the cure for cancer, it is important that you follow the above-mentioned tips to write a good essay.
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.
Put the steps of DNA replication in the correct order.
1.
Complementary bases come in
2.
DNA unzips
3.
The backbone bonds to bases and bases bond to each other
4.
The sugar-phosphate backbone is constructed
5.
The bases are proofread
a.
Step 2
b.
Step 5
c.
Step 4
d.
Step 1
e.
Step 3
Answer:
The five steps of DNA replication are (1) DNA unzips, (2) complementary bases come in, (3) the sugar-phosphate backbone is constructed, (4) the backbone bonds to bases and bases bond to each other, and (5) the bases are proofread.
The process of DNA replication.You may thus remember that your cells produce enzymes as catalysts to carry out activities. Your cells turn on an enzyme called DNA helicase for DNA replication. Your DNA is grabbed by the helicase molecule, which then gently unravels and unwinds the entire DNA molecule. Another group of enzymes known as DNA polymerase follow behind it as it moves.
There are also free-floating nucleotides present in your cell. Normally, your cell utilizes them to build RNA for communications, but now the DNA polymerase enzymes take them up and assemble them into new DNA. If the polymerase tries to insert the incorrect nucleotide, it won't fit since each nucleotide can only ever link to its matching nucleotide (A->T, G->C), which stops the process. Another nucleotide is taken after discarding the erroneous one. The leading edge is created in this manner.
Another enzyme, which should be mentioned, primes the nucleotides with phosphate groups that the polymerases grasp onto and then discard when the nucleotides are integrated into at the DNA strand.
It becomes a little trickier with the lagging strand. The polymerase will move in the same direction as the helicase on one side because the polymerases can only move in one way (5'-3'), but it cannot move in the opposite direction on the other. The open DNA on that side is instead read by a different enzyme known as DNA primase (there are many of them), which then synthesizes RNA segments that are identical. A different polymerase converts the RNA primer to DNA, followed by a third enzyme (DNA ligase) that joins the ends of those DNA segments to create the new whole DNA from the lagging strand. This process starts with one polymerase using the primer to attach and build DNA in the opposite direction of the helicase.
The two new complete sets of DNA are therefore formed from the leading and lagging strands. The other half is composed of the old DNA that was divided in half, while the first half is entirely new and formed of free nucleotides.
The process by which your cells divide then involves bundling up the DNA, dividing, and a whole bunch of other things.
Little more info that might answer some extra questions:The primase is not what puts the extra phosphate groups onto the loose nucleotides. As far as I'm aware, that's part of their construction. Those phosphate groups are what provides the energy for the polymerase to attach them to the DNA strand, after which they're discarded to be picked up and reused later to build more nucleotides. The nucleotides themselves are made with a different series of enzymes. Suffice it to say, enzymes are like tiny molecular robots in a factory using chemical reactions to build what your cell needs, each enzyme responsible for one of the often many reactions needed. The process for constructing nucleotides is over my head, but it boils down to a series of enzymes putting molecules together and changing their shape.
What primase does is construct the RNA primers that the polymerase fuses to the DNA strand to become the other half of that side of the DNA.
The lagging strand isn't smaller, it's just being constructed in the opposite direction from the way the DNA is being unzipped by the helicase. Typically, you picture DNA like a twisted ladder, but that's not quite right. The reason it has the twist has to do with the structure of the base pairs. The two chains of the DNA run opposite from each other. If you're looking at it like a ladder, one side is "upside down". The helicase starts unzipping from either end of the DNA strand, but for one side of the DNA it's unzipping 3'-5', and for the other side it's unzipping 5'-3'.
The polymerase only constructs DNA going from the 5' end to the 3' end. For half the DNA, this works perfectly fine - it follows merrily along behind the helicase as it unzips the DNA strand. As each base pair separates, the polymerase just pops a new base onto the half it's attached to. For the other half, though, from its perspective the DNA is getting unzipped 3'-5', which is opposite the direction the polymerase can go. It can't follow behind the helicase. Instead, primase comes in and builds RNA segments in the 5'-3', "backwards" from the helicase, giving the polymerase something to grab and go the direction it wants to go.