Biology High School
Answers
Answer 1
Answer:
If there's not a study guide, try going over your notes. Typically teachers let you choose what you talk about, but I'm in flvs. It's been a while since I've been in bio, but you got it. (last year) it's not as scary as you think. You can always look at the lesson while yall talk!
Explanation:
Hope this helps and good luck!
Answer 2
Answer:
There are quizlet flash cards you can use, sadly i cant put the link for you bc it wont let me.
Related Questions
what is the correct order of steps in a gram staining procedure? 1. iodine is added as a fixative or mordant. 2. the specimen is treated with a stain such as safranin or fuchsin (a pink stain). 3. the specimen is flushed with alcohol to dehydrate peptidoglycans and trap the stain. 4. the specimen is treated with a stain called crystal violet.
Answers
The correct order of steps in a gram staining procedure is:
(4) the specimen is treated with a stain called crystal violet.
(1) iodine is added as a fixative or mordant.
(3) the specimen is flushed with alcohol to dehydrate peptidoglycans and trap the stain.
(2) the specimen is treated with a stain such as safranin or fuchsin (a pink stain)
Gram staining is a common staining technique which helps to classify the bacteria into two categories: Gram positive and Gram negative. Gram positive bacteria appear violet in color and Gram negative bacteria appear to be pink. This color difference appears due to the difference in the bacterial cell walls.
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in one paragraph, how would you summarize the major causes, risk, and effects of the zika virus to someone who has never heard about the condition?
Answers
The mosquito that transmits the Zika virus is common all throughout the world.
Mosquito bites generally spread the Zika virus to people in tropical and subtropical areas of the world. Most Zika virus sufferers show no symptoms at all. Some patients frequently have a mild temperature, rash, and painful muscles. The Zika virus may, in extremely rare instances, cause problems with the brain or neurological system, such as Guillain-Barre syndrome, even in people who never show any symptoms of infection. Other names for the Zika virus infection include Zika, Zika fever, and Zika virus illness.
Symptoms Up to 4 out of 5 people who have the Zika virus exhibit no symptoms at all. When symptoms do materialize, they usually begin two to fourteen days after a person.
Zika virus symptoms most frequently manifest as:
Rash of a mild feverEspecially in the hands or feet, joint discomfortRed eye color (conjunctivitis)
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Help...........................
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The relationship between the single celled paramecium and the multicellular giraffe in terms of the cell theory is that both organisms are made of cells.
What is cell?
In taxonomy, we often try to classify life. The classification of life often starts from the simplest to the complex levels of the organization of life. All the organisms that exists in the universe must falls somewhere into this strata of life. We know that the simplest unit of life is the cell. It is defined as the simplest independent unit of an organism.
According to the cell theory, all organisms are composed of cells and the cells that we have in existence are always derived from pre existing cells. The cells was first discovered by Robert Hooke as he was working with his crude compound microscope.
Now, since all organisms are composed of cells, the relationship between the single celled paramecium and the multicellular giraffe in terms of the cell theory is that both organisms are made of cells.
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1. What is the union of the sperm and egg called?
2.In which female reproductive organ does this union occur?
3.What is it called if the union stays in the wrong female reproductive organ and does not proceed to the uterus?
4.Can this pregnancy continue?
What is another name for the female egg?
Answers
Explanation:
1.)Fertilization:-it is also the fusion/union of a male sperm and a female egg
2.)fallopian tube:-insermination also occurs here
3.)Azoospermia:-
4.)No
another name for a female egg is the ova
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Another word for characteristics of a living thing?
Answers
Answer:
tasks because if a person or being is alive then it does any sort of task
Explain why the first colonization plants established in the north of the island while later colonizers established in the south.
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Plant colonization and the succession on the north of the island, was formed in the 1963, have been closely followed. In 2013,
A total of like 69 vascular plant the species had been discovered on the island; of these which 59 were present and the 39 had established with viable populations. the north of the island had more than twice of the species of any of the comparable neighbouring islands and all their common was species that had been established on the Surtsey. The first was colonizers were they dispersed by the sea, but after 1985 bird-dispersal became the principal of pathway with the formation of the seagull colony on the island and the consequent site and amelioration. This was allowed wind-dispersed the species to establish after 1990. Since the 2007 there has been a net loss of the species on the island
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A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of the same type of tomato plants into separate containers, each containing the same amount of soil. Each pot received a different watering solution, containing varying amounts of fertilizer.
The table below shows the average height of the plants by the end of one week.
Plant group Fertilizer amount (g) Avg height of plants (cm)
1 0 3.0
2 5 3.2
3 10 4.4
4 20 5.0
What is the independent variable in this experiment?
Choose 1 answer
A The type of tomato plant
B
The amount of fertilizer
C
The height of the plants
D The amount of soil provided
Answers
The amount of soil provided is referred to as the independent variable in this experiment and is denoted as option D.
What is Independent variable?
This is defined as a type of variable which doesn't change and is not influenced by other variables in the experiment.
In thus scenario, we were told that there was difference in the tomato plants and fertilizer as well as the watering which means they are dependent variable. The fixed variable is the amount of soil provided which is the reason why option D was chosen as the correct choice.
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What is a key difference in gene expression between eukaryotic and prokaryotic cells?
Answers
Answer:The main difference between prokaryotic and eukaryotic gene expression is thatthe entire prokaryotic gene expression occurs in the cytoplasm whereas a part of the eukaryotic gene expression occurs inside the nucleus while rest occurs in the cytoplasm.
Explanation:Prokaryotic gene expression (both transcription and translation) occurs within the cytoplasm of a cell due to the lack of a defined nucleus; thus, the DNA is freely located within the cytoplasm. Eukaryotic gene expression occurs in both the nucleus (transcription) and cytoplasm (translation)
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Which of the following statements is true concerning diabetes?
A. Type 1 diabetes develops with the body doesn't make insulin or use it properly in
the body
B. Type 2 diabetes is often linked to obesity and presents itself when body cells
stop responding properly to insulin
C. People who have diabetes can usually manage and control it with a healthy diet,
exercise and insulin injections
D. All the above
Answers
It’s D. All the above I’m sure it’s right
Ten grams of sugar is placed in a beaker with 100ml of water. Initially, the sugar is at the bottom of the beaker however once gradually heated the sugar disappears. Which statement best explains what type of change occurred?
Answers
The dissolution of sugar in water is an example of a physical change as no new substance is formed and it is easily reversible.
What are chemical and physical changes?
Physical changes are changes that occur in the physical properties of substances.
The properties of physical changes include:
no great heat changes occurthey are reversibleno new substances are formed.
Chemical changes are changes that occur in the chemical properties of substances.
The properties of chemical changes include:
great heat changes occurthey are not easily reversiblenew substances are formed.
Considering the dissolution of sugar in water, no new substance is formed, instead a mixture of water and sugar is obtained. Also, the change is easily reversible as the sugar can be obtained by heating tue mixture to evaporate the water.
herefore, it is an example of a physical change.
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Note that the complete question is given below:
When sugar in a beaker is heated over a low flame, the solid crystals disappear and a thick, yellow-brown liquid forms. Determine whether this change is a chemical reaction or a physical change.
chemical reaction
physical change
Many people were catching a communicable disease called "Ugo". Most of these people were very sick and took 7 to 9 days to recover. Investigations directed by Dr. Kleinenstein had revealed that Ugo was caused by a pathogenic bacteria, Ugot diarrhea.
Kleinenstein had recently read in the 'Journal of Biochemistry' that an antibiotic called "norunium" was observed to kill the Ugo bacteria
After receiving permission from the appropriate government agencies Kleinenstein was ready to conduct an experiment on human subjects.
Tablets were prepared containing the antibiotic norunium. A second batch of tablets containing none of this antibiotic were also prepared (tablets containing no medication are called 'placebos').
1. What is Kleinstein’s probable hypothesis? State as an “if.. then…” statement”
Answers
Answer:
If norunium can kill the Ugo bacteria, then norunium tablets when ingested should see to a reduction of Ugo bacteria in the body.
Explanation:
Kleinenstein is basing his experiment based on the results of another (group of) scientist(s) that found that norunium can eliminate the Ugo bacteria. Based on "reproducibility and replicability", Ugo should, with the same steps, come to the same result as the scientist(s) who found that "norunium" can kill the Ugo bacteria.
One thing to note, is that if Kleinenstein is to re-test the experiment, generally there would be a step to see the effects of the antibiotics on animals first, before moving to human subjects.
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Cracked up some of the other things I need for the house and the house I need a couple things for you and me too lol lol is the answer
the zebra longwing butterfly (heliconius charitonius) has adapted to withstand the toxins and defenses in its host plant, the passion flower (passiflora sp.). this back-and-forth response of adaptations between the butterfly and plant that has lasted thousands of years is .
Answers
This back-and-forth response of adaptations between the plant and butterfly that has lasted thousands of years is Coevolution.
What is coevolution?
Coevolution occurs when the genetic development of two or more species has an impact on one another's evolutionary processes. Hummingbirds and ornithophilous (bird-pollinated) flowers are two examples. The nectar from the ornithophilous blooms, which has a high sugar content, provides food for the birds. In exchange, the birds help pollinate these flowers.
As mentioned in question, the zebra longwing butterfly (Heliconius Charitonius) has adapted to withstand the toxins and defenses in its host plant the passion flower (Passiflora sp.). This back-and-forth response of adaptations between the plant and butterfly that has lasted thousands of years is coevolution.
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The two kinds of cells are found in two major groups of organisms. Identify the
groups.
2 Label the parts of the cells.
Answers
Prokaryotic and eukaryotic cells are categorized as the two primary division groups.
The fundamental building blocks of all known living things are cells. There are two main categories of cells, which share certain characteristics but also differ greatly from one another. There are several living creatures made up of these cell kinds.
All bacteria and archaea are unicellular creatures made of prokaryotic cells. All protists, plants, fungi and animals are made up of eukaryotic cells. Prokaryotic cells have a very basic structure and make up. They only include a cell wall and membrane, cytoplasm, a genetic information loop, and ribosomes for protein synthesis. Prokaryotic cells lack membrane-bound organelles and a proper nucleus. Eukaryotic cells are far more sophisticated and have a genuine nucleus in addition to several membrane-bound organelles. Chloroplasts, mitochondria, endoplasmic reticulum, the Golgi apparatus, and ribosomes are the organelles present in eukaryotic cells.
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How many protons electrons and neutrons does the following Isotope contain 18 f -
Answers
According to the Periodic Table, the Isotope of Fluorine ¹⁸F⁻ contains
9 number of protons that is p⁺ = 9; 9 electrons that is e⁻ = 9; and10 neutrons. That is n° = 10;
How did we arrive at the number of neutrons?
Recall that the Mass number of Fluorine as established in the Periodic Table is 18.998 which is approximately 19.
Let the Mass be M...........1
Recall that the Number of protons is equal to the Atomic number (which is 9)
It is also established that the number of electrons is equal to the Atomic number (which is 9).
Let Atomic Number be A..........2
To calculate the number of neutrons we must Remove Atomic Number from Mass Number.
Hence Number of Neutrons = M - A..........3
Which is:
19 -9
= 10
Hence the number of Protons, electrons and neutrons for Fluorine ¹⁸F⁻ is 9, 9, and 10 respectively.
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Why is nitrogen scarce in the biosphere?
Answers
Answer: nitrogen gas cannot cycle out of the atmosphere and into organisms
Explanation:
Answer:
The Earth Is Facing a Nitrogen Shortage Due to Climate Change, Study Says. Greenhouse gases, among many other pressures, are reducing access to this key nutrient in ecosystems around the world.
Explanation:
Although nitrogen is very abundant in the atmosphere as dinitrogen gas (N2), it is largely inaccessible in this form to most organisms, making nitrogen a scarce resource and often limiting primary productivity in many ecosystems.
An undersupply of which neurotransmitter has been linked with depression? group of answer choices
Answers
An undersupply of serotonin neurotransmitter has been linked with depression.
What is serotonin?
A monoamine neurotransmitter called 5-hydroxytryptamine is serotonin (5-HT). Additionally, it affects hormones.
As a neurotransmitter, serotonin transmits and receives messages from nerve cells in the body's central nervous system and peripheral nervous system. Chemical instructions are sent to your body on how to function.
Serotonin regulates body temperature, sleep, hunger, and sexual activity in addition to having an impact on learning, memory, and happiness. Mania, anxiety, melancholy, and other disorders are thought to be exacerbated by serotonin deficiencies.
Therefore, a lack of serotonin has been linked with depression.
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How is information transmitted through the nervous system? (choose every correct answer.)
Answers
Information is transmitted through the nervous system through electrical impulses.
The correct answer choice is option a
This goes to say that information in nervous system are transmitted through the electrical impulses of neurons.
The neurons are the basic and functional unit of the nervous system.
What is nervous system?
The nervous system simply refers to the system of the body which helps in the coordination of all the activities which takes place in the body for proper functioning of the body system.
However, the functional unit of the nervous system is the neurons. These neurons help to relay messages or information from one part of the body to another and also to the external environment.
So therefore, information is transmitted through the nervous system through electrical impulses.
Complete question:
How is information transmitted through the nervous system? (choose every correct answer.)
a. Electrical impulses
b. Chemical messengers.
c. None of the above
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Blood readily moves through vessels because it contains a high volume of water. which property of water describes this ability?
Answers
The property that describes the ability of blood to move readily through vessels because it contains a high volume of water is: low viscosity.
Blood is the fluid that facilitates the transport of various substances across the whole body. It is a red-colored fluid that receives its color due to a pigment called hemoglobin. The substances that blood can transport are: gases like oxygen and carbon dioxide, waste material, hormones, immune cells, etc.
Viscosity is the property of fluids that determines the resistive power of fluids. The more a liquid is viscous, the more it has the resistive power to move or change its shape. Water has very less viscosity and hence can easily move or change shape according to the vessel it is present in.
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Imagine a chromosome that has alleles ""r"" and ""g"" on it. The hom*ologous chromosome has different versions of these genes and contains the ""r"" and ""g"" versions. What are the possible gamete combinations that can occur?.
Answers
Imagine a chromosome that has alleles ""r"" and ""g"" on it. The hom*ologous chromosome has different versions of these genes and contains the ""r"" and ""g"" versions. The possible gamete combination that can occur is RrGg.
In the field of science, hom*ozygous chromosomes can be described as chromosomes that have the same alleles for a gene, On the other hand, heterozygous chromosomes have different alleles for a gene.
According to the question above, the hom*ologous chromosomes have different versions of the genes. This means that one of the chromosomes would have 'R' allele and the other 'r'. Similarly, there will one 'G' allele and the other will be 'g' allele.
The gamete combination for such chromosomes will be RrGg.
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Suppose actively dividing eukaryotic cells were treated with a chemical that blocks the activity of the enzyme telomerase. What would happen to these cells?.
Answers
If actively dividing eukaryotic cells were treated with a chemical that blocks the activity of the enzyme telomerase, then these cells would lose DNA at the ends of the chromosomes over many generations.
Telomerase are enzymes that play a major role in maintaining the proper chromosomal length of chromosomes. They help in the formation of telomers which are repetitive sequences found at the end of each chromosome. This unique repetitive sequence helps in keeping the chromosomes intact.
If the activity of telomerase will be blocked, telomers will not be able to form. Due to this, sections of DNA will be continuously lost from the chromosomes as there will be no telomers at the end. As more and more DNA will be lost, the integrity of the chromosomes will not be maintained.
Without telomerase, the ends of the DNA will also not be able to replicate. Hence, causing DNA to be lost over many generations.
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In Sl units, the standard unit of force
Answers
In Sl units, the standard unit of force newton, symbol N.
The base units relevant to force are:
The metre, or m, is a unit of length.
The kilogram (kg), a unit of mass
second, or s, is a unit of time.
The change in momentum rate is referred to as force. This is comparable to mass x acceleration for a constant mass.
Therefore, 1 N equals 1 kilogram m s-2 or 1 kg m/s2.
Force is denoted by the letter F.
A force is an effect that can alter an object's motion in physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F.
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The word helix means spiral. what does this tell you about the structure of dna, which is a double helix macromolecule?
Answers
The DNA is double helix macromolecule, that means it has two strands of spirals joined together by hydrogen bonds.
DNA is the Deoxyribonucleic Acid. It is the main genetic material present in the majority of the organisms. The double helix are joined together by hydrogen bonds, giving the DNA a spiral staircase like appearance. These two strands are anti-parallel in nature.
Hydrogen bonds are the non-covalent bonds. These are usually intermolecular bonds, however they can be intramolecular as well. The bond is formed between one hydrogen atom and another electronegative atom of some other molecule, like fluorine, oxygen or nitrogen.
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Starting with one double-stranded dna molecule, how many cycles of pcr would you have to perform to produce about 100 double-stranded copies (assuming 100fficiency per cycle)?
Answers
Starting with one double-stranded DNA molecule, 7 cycles of PCR would you have to perform to produce about 100 double-stranded copies (assuming 100 efficiency per cycle).
PCR Product = [tex]2^{n}[/tex]
n= Number of Cycle
PCR- Its basic idea is based on the replication of certain DNA sequences in-vitro using DNA polymerase. This technique may produce tens of billions of copies of a specific DNA fragment from a DNA extract (the sequence of interest, DNA of interest, or target DNA) (DNA template).
DNA- The molecule found inside cells that carries the genetic material necessary for an organism to grow and operate. This knowledge may be handed forward from one generations to the next thanks to DNA molecules.
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Name three abiotic resources that are necessary to the continued health of the ecosystem.
Answers
Answer: Water, Sunlight, and Soil
Explanation: Water is needed for any life to exist in a ecosystem, sunlight lets plants create their food and thus feed the rest of the food web, and soil is also needed for plants to take root and grow to feed others.
Which geographic distribution is a result of a limit of resources and equally separated individuals where they keep their own space?
A. clustered
B. random
C. clumped
D. uniform
Answers
A uniform distribution is a result of limit of resources and equally separated individuals where they keep their own space.
What is an uniform distribution?
Basically, an uniform distribution refers to the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth. The basic types of population distribution within a regional range are uniform, random, and clumped distribution.
The individuals of a population are spaced in different ways which is called dispersion patterns but in an uniform dispersion, the individuals are evenly spaced. Therefore, the uniform distribution is a result of limit of resources and equally separated individuals where they keep their own space. Therefore, the Option D is correct.
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Should I use a line graph or a bar graph?
Answers
Answer:
none none none none none
Experiment 4: Mouthwash
Scientists wanted to determine the most effective mouthwash. They had three groups of volunteers. One group used 10 mL of Listerine mouthwash, one group used 10 mL of ACT mouthwash and one group used 10 mL of water. All participants ate the same foods the day of the experiment and swished the mouthwash for 30 seconds. The scientist took a swab of the inside right cheek of each participant. After 24-hours the scientist counted the number of bacterial colonies that formed on a Petri dish from the mouth swab.
What is the independent variable and dependent variable? How do you know?
Answers
The independent variable in this experiment is different mouthwash used. The dependent variable is the number of bacterial colonies on the petri-dish.
What is an independent variable?
The independent variable of an experiment is the variable that is changed or manipulated in a series of experiments.
On the other hand, the dependent variable is the variable or outcome that is measured to see the effectiveness of the treatment
According to this question, scientists wanted to determine the most effective mouthwash. They had three groups of volunteers.
One group used 10 mL of Listerine mouthwashOne group used 10 mL of ACT mouthwashOne group used 10 mL of water
After 24-hours, the scientist counted the number of bacterial colonies that formed on a Petri dish from the mouth swab.
This suggests that the independent variable is the different mouthwash used while the dependent variable is the number of bacterial colonies.
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what type of medication is important to a person having pneumonia that doctor recommend?
Answers
Answer:
He should take Antibiotics
Explanation:
is the use of genes for treating human genetic disorders. a. recombinant dna technology b. genomics c. genetics d. pharmacogenomics e. gene therapy
Answers
Is the use of genes for treating human genetic disorders d. pharmacogenomics .
What is pharmacogenomics ?
Pharmacogenomics is the study of how genes impact how a person reacts to medications. In order to create powerful, secure treatments that may be administered based on a person's genetic profile, this area integrates genomics (the study of genes and their roles) and pharmacology (the science of drugs).
Although many medications on the market today are "one size fits all," they don't all operate in the same manner. It can be challenging to determine who will respond well to a treatment, who won't respond at all, and who will encounter unwanted side effects (called adverse drug reactions). In the US, adverse medication responses constitute a major factor in both hospital admissions and fatalities.
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The prefix that is added to the word autotroph to denote organisms which can use inorganic compounds in the environment to fix carbon dioxide with hydrogen atoms to make sugar is?.
Answers
The prefix that is added to the word autotroph to denote organisms which can use inorganic compounds in the environment to fix carbon dioxide with hydrogen atoms to make sugar is 'litho'.
We describe autotrophs as organisms that have the ability to form their own nutrition. The addition of the prefix 'litho' to the word autotroph forms the lithoautotrophs.
Lithoautotrophs are a specific type of autotroph that can derive their energy by using inorganic substances. As lithoautotrophs use substances like carbon dioxide or minerals to derive energy, they fix carbon dioxide in the environment and replace it with hydrogen. The lithotrophs can either derive energy from light or they can derive energy from chemicals. The sugar produced by lithoautotrophs is then used for carrying out other functions.
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