Answers
Answer:
Explanation:
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Related Questions
Roses have 70 chromosomes in their body cells, After Meiosis, how many chromosomes would rose eggs/sperm have?
Answers
Answer: 35 chromosomes
Explanation: somatic cells are diploid, gametes are haploid, so the gametes will have 35 chromosomes.
Which question cannot be tested with a scientific investigation?
Answers
Answer:
forgot to add the question
True or false: A selective force (such as antibiotics) must be present for DNA mutations to occur. Group starts
Answers
Answer: False
Explanation:
The air is less dense at higher altitude how does this affect climate
Answers
Organisms that may be part of the normal bacterial flora, but can--under certain conditions--cause disease are known as ____________ pathogens. g
Answers
Answer:
Bacteria pathogens.
Explanation:
This is because bacteria pathogens are single celled organisms that can cause diseases. Though many bacteria do not cause disease but the pathogenic bacteria have the ability to cause infections and become harmful to their host. Bacteria tend to adapt to their environment and they can turn pathogenic if the immune response of the host eventually become environment , it becomes pathogens. Examples of bacteria pathogens are salmonella, E.coli, listella e.t.c.
Some conifers lose their needles seasonally, just as deciduous trees do.
True
False
Answers
During a chemical reaction bonds that hold atoms together may be broken or formed is it true or false
Answers
Answer:
ko
Explanation:
okok
Answer:
true
Explanation:
melting wax, evaporating gasoline, freezing water.
These changes are examples of
A) nuclear changes.
B) physical changes.
C) chemical changes
D) energy consumption
Answers
Answer: These changes of state are physical changes
Explanation: changes between gas, liquid and solid phases do not alter the chemical or atomic state. Ice, water and water vapour all have the chemical formula H2O.
In pea plants yellow seeds are dominant to green seeds. A plant with green seeds cross at the plant that is heterozygous.
What are the alleles?
What are the genotypes of the parents?
What are the F1 genotypes?
F1 phenotypes?
Answers
Answer:
The correct answer is -
1. Y (yellow) and y (green)
2. Yy (yellow dominant) and yy (green)
3. Two heterozygous yellow (Yy) and two green recessives (yy)
4. 50% Yellow and 50% green plant
Explanation:
In the given question, it is given that a pea plant has two alleles for the trait yellow seeds and green seeds, the alleles for the traits are green (y) and Y for the dominant trait.
The cross between the green seed (yy) pea plants, is recessive and heterozygous which means a combination of dominant and recessive are as follows:
Y y
y Yy yy
y Yy yy
Here two heterozygous yellow seeds and two recessive green seed plant offspring.
Some microorganisms have enzymes capable of catalyzing reactions that are difficult or unfeasible by standard industrial chemical treatments. What process takes advantage of these microbes' abilities, by growing the them in the presence of the enzyme's substrate, allowing the microbe to catalyze the step needed to produce some industrial products
Answers
Answer:
Metabolic Engineering
Explanation:
Metabolic engineering refers to the process of modifying the genetic and enzymatic processes within cells in order to optimize the output of products. When constraints are noticed in the normal biological process, scientists endeavor to modify the constraints so that wide scale production can be realized.
Examples of processes that incorporate this technique are beer, cheese, wine and some drugs production.
areas fault lines are often changed by
A. earthquakes
B. tornados
C. windstorms
D. infestations
Answers
Answer: A. Earthquakes
Explanation:
trust
Why did the population of pests in Area A increase in 1978 when, in 1977, it appeared that the pest had been almost completely eliminated
Answers
Introduction a pest from other regions or formation of resistance due to regular application of same pesticide.
There may be two reasons for their presence, first it may be introduced from surrounding regions of that area where no pesticides are used for their elimination. This introduction of pest through human or animals entering the area.
Secondly, there may be some of pests survive due to gain resistance against the pesticide which increases their population in the next year so we can conclude that introduction a pest from other regions or formation of resistance due to regular application of same pesticide.
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3. What are the seven emergent properties associated with the origin of life?
Answers
Answer:
Hierarchy of organization
The cellular basis of life
Heritable information
Scientific process: Hypothetico-deductive method
Evolution: The core theme
The interaction of organisms with their environment
Unity in diversity
Correlation between structure and function
Explanation:
give me a brainiest. hope this helps
Which organelles in a cell break down nutrients and release energy?
1.
mitochondria
2.
chromosomes
3.
cytoplasm
4.
chloroplasts
Answers
Answer:
Im pretty sure its mitochondria so number 1
Explanation:
Answer:
mitochondria
Explanation:
because it is house of respiration
Stem cells can become any type of cell in the human body, making them ideal for many types of therapies. One area of possible use is in brain cell transplants that could help people with spinal cord injuries and neurodegenerative diseases such as Parkinson’s disease. Even though there is great potential for helping people, what is one ethical issue that could arise from the use of stem cells?
A. the source of the stem cells
B. the cost of obtaining the stem cells
C. the method of storing the stem cells
D. the procedure for transplanting the stem cells
Answers
Answer:
The answer is D, the procedure for transplanting the stem cells,
Explanation:
by reading the question carefully we can fully determine this is the accurate answer!
According to the scenario, an ethical issue that could arise from the use of stem cells is the procedure for transplanting the stem cells. Thus, the correct option for this question is D.
What are Stem cells?Stem cells may be defined as the types of cells that have the potential to differentiate into many different types of cells in the body. These types of cells function as a repair system for the entire body.
The transplantation of stem cells leads to the advantage of utilizing these stem cells for medical treatment the fact they constitute an ethical issue is that the methodology for transplanting the stem cells treats spinal cord injuries and neurodegenerative diseases such as Parkinson’s disease.
Therefore, an ethical issue that could arise from the use of stem cells is the procedure for transplanting the stem cells. Thus, the correct option for this question is D.
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What is the movement of air during the day where land and water meet?
Answers
Answer:
from water to land
Explanation:
during the day a land has higher temperature than water so the air is lighter on land and makes space for heavier one from water. that's why the air moves from water to land
the movement of air during the day from water to land
what are the properties of water ?The physical property of Water are, it is a colorless and tasteless liquid, have extensive hydrogen bonds resulting in unusual properties in the condensed form.
This also have high melting and boiling points. As compared to other liquids, water has a higher specific heat, thermal conductivity, surface tension, dipole moment, etc.
Water is a great solvent and helps in the transportation of ions and molecules required for metabolism, has high latent heat of vaporization helps in the regulation of body temperature.
It is Amphoteric nature can act as both acid and base means that it is amphoteric in nature, it is Electropositive elements which reduce water to hydrogen molecule and it is the source of hydrogen.
during the day a land has higher temperature so the air is lighter on land and makes space for heavier one from water, hence the air moves from water to land
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by what factor would the rate of diffusion across a membrane change if both its area and thickness doubled
Answers
Answer:
Size of particle.
Explanation:
Size of the particles that are diffusing is the factors that greatly affect the rate of diffusion. The rate of diffusion decreases if the thickness of the membrane becomes doubled while on the other hand, if the surface area of the membrane increases it doubled the rate of diffusion of the cell. If the size of particles is very small so it will diffuse if the membrane has double thickness.
Write a hypothesis for the experiment below.
Answers
Answer:
Hypothesis: I predict that the plant with blue cellophane will demonstrate prolific growth compared to its counterpartsWhich of the following would increase the density of an object?
decrease mass and increase volume
O increase mass and increase volume
decrease mass and decrease volume
increase mass and decrease volume?
Answers
Which of the following would increase the density of an object?
Answer:Increase mass and decrease volume
#CARRYONLEARNING #STUDYWELLIf solution A has a pH of 2 and solution B has a pH of 8, which of the following statements is true?
a.A has a greater [OH-] than B.
b. A is acidic and B is basic.
C.A is a base and B is an acid.
d.None of these
e. A is basic and B is acidic.
Answers
Answer: b. A is acidic, B basic
Explanation: pH 7 is neutral, with equal H+ and OH-
pH is -log(H+ Molar Concentration) and at pH7, H+ and OH- are both at a concentration of 10^-7
A more acidic solution has more H+ than OH-, so it is a higher concentration than 10^-7 and therefore pH lower than 7. Conversely, a pH>7 means a higher concentration of OH- and lower concentration of H+
Considering the definition of pH, the correct statement is option b. A is acidic and B is basic.
You need to know that pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:
pH= - log [H⁺]
The scale has values ranging from 0 to 14, with pH 7 being the neutral solution. Solutions with pH less than 7 are acidic and alkaline (basic) those with pH greater than 7.
Then, being the pH of solution A equal to 2, being less than 7, the solution is acidic. On the other hand, the pH of solution B is 8. As the pH is higher than 7, solution B will be basic.
So, finally, the correct statement is option b. A is acidic and B is basic.
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What institutional status provides no specific regulatory coverage for laboratory strains of rats and mice?
Answers
Answer: USDA registration for research institute.
Explanation:
United States Department of Agriculture ( USDA) is a federal agency in the United States which was founded by Abraham Lincoln. This agency plays a major role in the regulation and maintenance of farming, ranching, and forestry industries, as well as regulating aspects of food quality & safety. The agencies established under the USDA includes:
--> Agricultural research services
--> Farm service agency and
--> Animal and Plant health inspection service.
Through the Animal and Plant inspection services, the USDA administers the Animal Welfare Act (AWA) which purposefully excluded laboratory strains of rats and mice because they are breed specifically for research purposes.
Answer: USDA registration for research institutions
Explanation:
2. Why is hydrogen placed in group one of the periodic table?
Answers
Answer:
because, it resembles the properties of alkali earth metals as well as halogens ! OwO
Explanation:
" Hydrogen resembles the properties of alkali earth metals as well as halogens. Hydrogen has one electron in its valence shell and it also needs one more electron to get stable. ... For this the hydrogen is placed separately in periodic table ! "
P.s: sharky said thanks for the points !
why is the skin considered as the first line of defense of our body against microorganisms
Answers
Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens. You have beneficial bacteria growing on your skin, in your bowel and other places in the body (such as the mouth and the gut) that stop other harmful bacteria from taking over..
Explanation:
when a microorganism comes towards us, its the first thing they come in contact with- our skin.
What is an example of an extrusive land forms
Answers
Answer:
Extrusive landforms are formed from material thrown out to the surface during volcanic activity. The materials thrown out include lava flows, pyroclastic debris, volcanic bombs, ash, dust and gases such as nitrogen compounds, sulphur compounds and minor amounts of chlorine, hydrogen and argon.
Explanation:
here hope it helps
Cholesterol is an important biomolecule precursor for hormones. What functional group(s) are present
Answers
Answer:
Hydroxyl group, carbon group
Explanation:
This is because cholesterol is a lipid that has four linked hydrocarbon group called sterol. The sterol is the hydroxyl group which form hydrogen biynd with the neighbouring carbonyl oxygen of phospholipids head.
Cholesterol is found in the cells if the body and it is a precursor for producing vitamin D and steroids hormones like aldosterone, cortisone e.t.c
When hydrogen is broke down what 2 substances are created
Answers
When hydrogen is broke down 2 isotopes of hydrogen are created.
Why is hydrogen present in combined form?When atoms of the same or different types combine, molecules form. As a result, two Hydrogen atoms join together to form a Hydrogen molecule.
Hydrogen is mostly found in the combined state, such as water, rather than in the free state.
An atom of hydrogen, on the other hand, rarely exists on its own because its unpaired electron is always looking for a partner. Hydrogen in its molecular form is more common.
Each hydrogen isotope contains only one proton, but they differ in the number of neutrons in their atoms.
Because of the extra neutrons, the isotopes become heavier: deuterium is twice as heavy as ordinary hydrogen (also known as protium), and tritium is three times as heavy.
Thus, isotopes of hydrogen, i.e., protium and deuterium will be created.
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Describe how the Punnett square is a mathematical model for predicting
outcomes of inheritance patterns.
Answers
Answer:
Punnett squares are used to show all of the combinations of alleles that might result from across and the likelihood that each might occur.
Explanation:
Punnett squares are diagrams used by biologists to determine the probability that offspring have a particular trait. The creation of Punnett Square and its use to determine the characteristics of offspring is called the performance of the cross.
The crosses in Punnett Square are based on meiosis, a biological process in which parents transmit alleles to gametes, which they later pass on to their offspring. Each parent has two alleles for the trait and passes one to their offspring. Each offspring completes a total of two alleles, one from each parent.
what is a flagship species?
Answers
Answer:
In conservation biology, a flagship species is a species chosen to raise support for biodiversity conservation in a given place or social context.
Explanation:
I just know ig ...
Answer:
an flagship species is a specie as to act as an ambassador
Explanation:
How do chemoautotrophs make energy?
A. They covert carbon dioxide, water, and sunlight into carbohydrates.
B.They convert carbon dioxide, water, and organic molecules to carbohydrates.
C. They convert carbon dioxide, sunlight, and organic molecules to carbohydrates.
D.They convert carbon dioxide, water, and inorganic compounds into carbohydrates.
Answers
Explanation:
Carbon dioxide water and energy are the typical products of the breakdown of which type of molecule
Assume that you now study a third gene having alleles C and c. For each genotype, what type(s) of gametes will be produced
Answers
Complete question:
One gene has alleles A and a. Another has alleles B and b. Assume that you now study a third gene having alleles C and c. For each genotype, what type(s) of gametes will be produced
a. AABBCC
b. AaBBcc
c. AaBBCc
d. AaBbCc
Answer:
a. ABC
b. ABc, aBc
c. ABC, aBC, ABc, aBc
d. ABC, ABc, AbC, Abc, aBC, abC, aBc, abc
Explanation:
We have three genes that are not linked. Each gene can be in a dominant form or a recessive form. (A and a, B and b, C and c). Gametes are haploid sexual cells, n, meaning that they have half of the genetic material of a diploid cell. When two gametes get together, they form a diploid cell, the zygote.
As these genes are not linked, they segregate independently from each other. According to this, we can assume different allele combinations of these genes that form the gametes.
To know what kind of gametes might be formed from these genotypes, we just need to think about all the possible combinations according to the alleles of each gene. A gamete needs to have one allele of each gene.
An easy way to do so is to analyze genes separately and the possible combinations.
Genotype Possible alleles combination Gametes
a. AABBCC A----B----C ABC
In this genotype, there are only dominant alleles for each gene, so there is only one possible combination of alleles. A with B and C
b. AaBBcc A----B----c ABc
a----B-----c aBc
For this genotype, gene A has the dominant allele and the recessive one (A and a, respectively). Gene B has only dominant alleles (BB), and gene C only recessive alleles (cc). So we have two possible allele combinations: "A" with "B" and "c", and "a" with "B" and "c".
c. AaBBCc A----B-----C ABC
A----B-----c ABc
a-----B-----C aBC
a-----B-----c aBc
For this genotype, gene A has the dominant allele and the recessive one (A and a, respectively). Gene B has only dominant alleles (BB), and gene C has the dominant allele and the recessive one (C and c, respectively). So we have four possible allele combinations: "A" with "B" and "C", "A" with "B" and "c", "a" with "B" and "C", and "a" with "B" and "c".
d. AaBbCc A----B----C ABC
A----B-----c ABc
A-----b-----C AbC
A----b-----c Abc
a----B-----C aBC
a----B------c aBc
a-----b-----C aBC
a-----b-----c abc
This is a complete heterozygous genotype, which means that we have two options for each gene: the dominant allele and the recessive one. We have eight possible allele combinations.