Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.
An organism is exposed to a mutagen, such as X-rays or ultraviolet light. What could be the effect of the mutagen on the organism? Select all of the answers that apply.
The mutagen may disrupt gene function to the harm of the organism.
B. The mutagen may change gene function in a way that benefits the organism.
C. The mutagen may change the genetic material of the cell from DNA to proteins.
D. The mutagen may change the binding between codons and anticodons.
E. The mutagen may have little or no observable effect on the organism.
Answer:
a, b, c, e
Explanation:
- since mutations are random, they could both harm or benefit or have no effect on the organism (depends on where in the DNA is mutated, on the type of mutation that occurs, on whether the mutation is fixed, etc.)
- the binding between codons and anticodons are always as follows:
A on mRNA binds to U on tRNAT on mRNA binds to A on tRNAG on mRNA binds to C on tRNA and vice versaMutagens are substances that damage DNA and can cause permanent changes in the DNA sequence, depending on the ability of the organism to fix the mess.
Mutagen's effect:Deoxynucleoside triphosphates (dNTPs), which are utilized by DNA polymerases to duplicate DNA, can also be damaged by DNA-damaging agents.
A mutagen could harm the organism by disrupting gene function.A mutagen may alter gene function to the organism's benefit.A mutagen can alter codon-anticodon binding.Therefore, the final answer is "Option A, B, and D".
Find out more about the X-rays here:
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How are binary fission and mitosis similar
Answer:
A
Explanation:
Answer:
A. Both produce genetically identical daughter cells.
Enter your answer in the provided box. Calculate the frequency of the genotype Aa from a population that is made up of the following numbers of individuals: 41 individuals with the genotype AA 23 individuals with the genotype Aa 28 individuals with the genotype aa frequency of individuals with genotype Aa g
Answer:
25% or 0.25
Explanation:
The frequency of the genotype Aa from the population can be calculated from the formula;
Frequency of Aa = number of individuals with Aa/total population
number of individuals with Aa genotype = 23
Total population = 41+23+28 = 92
Hence,
Frequency of Aa = 23/92 = 0.25 or 25%
What are the Sampling techniques for Biology??
Answer:
Sampling Techniques in Biology Sampling methods of biological populations are Simple Latin Square Sampling, Capture Recapture Sampling, Inverse Sampling, Line Transect Sampling, Line Intercept Sampling and Adaptive Cluster Sampling.
Answer:
Sampling methods of biological populations are Simple Latin Square Sampling, Capture Recapture Sampling, Inverse Sampling, Line Transect Sampling, Line Intercept Sampling and Adaptive Cluster Sampling.
Explanation:
hope these help :))
• Some nitrogen fixing bacteria help
increase the fertility. This makes the
soil more productive. What activity of
bacteria helps make soil more
productive?
●
(a) Supplying compounds of nitrogen
to the plant roots.
(b) Breaking down nitrogen rich waste
into nitrogen gas.
OUTLO
(c) Breaking down compounds of
nitrogen to release nitrogen gas.
(d) Taking up nitrogen from the air
and converting it into compounds of
nitrogen
Explanation:
This makes the soil moreproductive. What activity of bacteria helps make soil more productive? (a) Supplying compounds of nitrogen to the plant roots.
PLEASE HELP MARKING PEOPLE AS BRAINLIST
Which hypothesis about cells was later found to be WRONG by scientists?
A. The cell is the most basic unit of life.
B. All organisms are made of cells and cell products . C. Cells are formed spontaneously by free-cell formation .
D. Plant cells and animal cells share structural similarities .
Answer:
D
Explanation:
A coiled structure of DNA and protein that forms in the cell nucleus during cell division is
called a chromosome.
True
False
Answer:
true
Explanation:
Answer:
TRUEE
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes.
Chromoplasts have two main functions. Which of the following statements exemplifies one of the functions of a chromoplast?
a The mitochondrion was once a separate prokaryotic cell that were taken in by a larger cell.
b Potatoes are high in starch.
c Red, yellow, and orange peppers are green until they are ripe.
d The green pigment chlorophyll allows a plant to absorb energy from the sun.
Answer:
C. Red, Yellow, and orange peppers are green until they are ripe.
Explanation:
this question was difficult lol
The backbone of the cell to which all organelles are attached, also functions in cell division is ______?
a.Cytoskeleton
b.Cell Wall
c.Nucleus
d.Ribosome
a) cytoskeleton as it's responsible for formation of spindle filaments during cell division
what is mitosis can do
Answer:
The purposes of mitosis are : cell renewal. repair of injuries. asexual reproduction. growth of organisms.
Explanation:
The purpose of mitosis is cell restoration, growth, and asexual reproduction, while the persistence of meiosis is the generation of gametes for sexual reproduction.
Today, prairie ranchers and farmers raise:
sheep, cattle, and pigs
COWS, deer, and bison
O horses, cows, and bison
o hawks, owls, and snakes
Answer:
sheep, cattle, and pigs
Explanation:
From sheep, cattle, and pigs, the most raised animal on the farms today is beef cattle. The reason why cattle is the first choice is its profitability. The cattle are easy to maintain, they just need good pasture and freshwater, some supplemental food during the winter, and enough space.
Life has changed through the process of
Answer:
Life has changed through the process of evolution
Explanation:
Evolution is defined as a change in the proportion of traits of genes from one generation to the next
Which of the following correctly organizes these genetic terms in order from smallest to largest?
chromosome, gene, nucleotide, DNA molecule
nucleotide, gene, DNA molecule, chromosome
DNA molecule, nucleotide, gene, chromosome
DNA molecule, nucleotide, chromosome, gene
Answer:
2
Explanation:
nucleotide,gene,dna,chromosome
The correct listing of genetic terms from smallest to largest is nucleotide, gene, DNA molecule, chromosome.
GENETICS:
Genetics is the branch of biology that deals with the study of genes and inheritance. Like every subject, genetics possess some terms that can be hierarchically arranged. The terms are in the order:
Nucleotide: Nucleotide is the monomeric unit of nucleic acids made up of three components namely: nitrogenous bases, phosphate group and pentose sugar. Gene: A gene is a segment of DNA or RNA from an organism's genome that codes for a particular trait. DNA: DNA is one of the two nucleic acids that stores genetic information in living cells. Chromosome: Chromosome is a X-shaped structure made up of DNA and proteins tightly woven together.Hence, the correct listing of genetic terms from smallest to largest is nucleotide, gene, DNA molecule, chromosome.
Learn more about genetics at: https://brainly.com/question/20215717
DNA contains four types of nitrogenous bases. One of these bases is
Answer:
Explanation:
adenine (A), thymine (T), cytosine (C), and guanine (G).
Genetic engineering is the manipulation of genes using cloning and transformation to change the
gene structure. Genetic engineering has many positive outcomes. These positive outcomes include
a. Manipulation of crops decreasing growth rate.
b. decreasing the diversity of living organisms
c. increasing the possibility of new pathogens
d. fruits and vegetables do not spoil easily
Answer:
B
Explanation:
The texture of igneous rock that is composed of large mineral grains
which of the following would be a hypothesis for a scientific investigation about how food shopping decisions affect food security
Answer:
Isn't there any photo or some options at least? Actually, it says which of the following-that's why I asked
Explanation:
If you add something as a reference then I will be able to answer and help you :)
Which organism is most likely 10cm in size
Answer:
A lizard is approximately 10 centimeters in size, so the answer is "lizard".
In the PBS video about the marathon, the speaker discusses several pieces of information about why humans are well equipped for running. The majority of his support for this position comes from which discipline?
You Answered
Well the PBS kid television is about to teach kids how to behave and be disciplined .
Explanation:
They also have them to learn.
What’s the relationship between ants and large blue butterfly larva?
a) competition
b) predation
c) mutualism
d) commensalism
Answer:
its D commensalism, one benefits from it and the other gets no harm
Explanation:
Help please!!!! Which table below matches the graph above
Answer:
b
Explanation:
Answer: C
Explanation: If you look closely, we know definitely that Friday is 58.
Therefore, B can't be the answer. Then, I can also see that Thursday has to be 61. And looking at the options there are no other answers that have 61 as Thursday.
Please help!!! Thanks pp
Answer:
Heterozygous.
Explanation:
Since the son has a recessive and dominant trait, (A shaded square and a white circle.)
How much of the energy (what percentage) of oxidizing Glucose to Pyruvate is captured in Catabolism as NADH ( H ) and ATP?
Answer:
40 percent.
Explanation:
About 40 percent of energy as ATP is produced due to oxidizing Glucose molecule in the process of respiration while the remaining 60 percent is lost as heat energy which is responsible for the generation of high body temperature. One molecule of glucose produces four molecules of ATP, two molecules of NADH, and two molecules of pyruvate during the first stage of respiration known as glycolysis while in the end of respiration process only ATP, carbondioxide gas and water is produced.
Which of the following is not a factor in creating hurricane storm surge?High waves
Heavy rain fall
Low air pressure
High wind
High air pressure
Answer:
I am not sure but I think it is high air pressure and high waves hope it helps
Answer:
high air pressure and high waves
Explanation:
Which of the following is not true of asexual reproduction?
A offspring that differ genetically from either parent
B offspring inherit all their genetic material from just one parent
C a single cell duplicates its genetic material, and then splits into two new genetically identical cells
D an example is a paramecium
Answer:
idk
Explanation:
Answer:
D
Explanation:
I don't need to put 20 charavters
Which sequence describes the formation of a gamete?
A.transcription → replication → translation
B.replication → cell division I → cell division II
C.mitosis → cell division I → translation
D.cell division I → cell division II → transcription
Answer:
part c
Explanation:
The sequence replication → cell division I → cell division II describes the formation of gametes.
Where does the formation of gametes occur?Meiosis (reduced division), in which a germ cell splits into two pieces and produces four gametes, is the process by which gametes are created.
Meiosis is a type of cell division that results in the production of four gamete cells and a 50% reduction in the number of chromosomes in the parent cell.
The gonads are where gametes (germ cells) are made. This process is known as spermatogenesis in males and oogenesis in females. The majority of novel mutations arise during gametogenesis, however males exhibit a higher mutation rate.
Learn more about gametes:
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BIOLOGY - QUARTER 2 - SUN
Which two bio molecules must the supplement contain to provide these benefits
Answer:
Proteins and Carbohydrates
The supplement has to build lean muscle and strengthen tendons and ligaments. Muscle, tendons, and ligaments are all made of protein. So the supplement must contain protein.
It should also provide energy. The most readily used form of energy is carbohydrates
Why did polio vaccine make people paralysed?
Answer:
When it multiplies in the nervous system, the virus can destroy nerve cells (motor neurons) which activate skeletal muscles. These nerve cells cannot regenerate, and the affected muscles lose their function due to a lack of nervous enervation.
Explanation:
The adaptive traits that allowed for plant transition to land include
Select one:
O A. ability to photosynthesize
O B. waxy cuticle with stomata
n
O C. chlorophyll
1
O D. pollen grain
46
Answer:
Explanation:
a water-repellent cuticle, stomata to regulate water evaporation, specialized cells to provide rigid support against gravity, specialized structures to collect sunlight, alternation of haploid and diploid generations, sexual organs
what are some early signs of MBD in bearded dragons
Answer:
stress lack of eating Constipation and weakness
Explanation:
are the main ones