Answer: Time one has been awake
Explanation:
In research, the independent variable is the one that is altered to see the effect that it produces on another variable/s which will be the dependent variable/s.
In this scenario, the amount of time that someone stays awake is the variable being altered to see what effect it will have on the person's reaction time. This therefore makes it the independent variable.
We’re you able to place some events within the periodic table with just a single clue
Explanation:
is that a personal question, or on a quiz or something?
Help please don't answer just for points please
Answer:
D) they alter the bases so they no longer fit within the DNA ladder rungs
The world is continuing to expand economically, and consumers are demanding for products. Which of the following is the most direct negative impact caused by the enormous use of paper products around the world?
Answer: Tree Good
Explanation: No more Tre ekuiL no mor
are
Monosaccharides are the monomer of which organic
compound?
Monosaccharides are the monomer of organic compounds called polysaccharides (carbohydrate).
WHAT ARE MONOSACCHARIDES:
Monosaccharides are simple compounds that contain one unit of sugar (saccharide). They are monomeric units of larger organic compounds called POLYSACCHARIDES, which are complex carbohydrates. Monosaccharides cannot be further broken down as they are the simplest form of carbohydrate molecules. Examples of monosaccharides, also called simple sugars are glucose, fructose, galactose etc. and they are monomers of polysaccharide molecules like starch, cellulose etc.Hence, monosaccharides are the monomer of organic compounds called polysaccharides (carbohydrate).
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The environmental factors that are important depend on the habitat true or false
Answer:
True
Explanation:
Answer:
true
Explanation:
The statement "carrying capacity can vary depending on environmental conditions" is true. Carry capacity is defined as the maximum population size of a species that an environment can sustain indefinitely. It is also defined as the environment's maximal load of a species. Factors that impact on the carrying capacity of a species are the availability of food and water, raw materials to build shelter, the environment's ability to process waste products, as well as the species' ability to reproduce.
DNA < | > Which model best represents strand 2? Below is a model of strand 1 of a DNA double helix. Remember, all models have limitations.
Answer:
Correct answer is A since it is the only one that is oppositely faced and the shape of the boxes is same.
Which one of the following plate boundary types would not be volcanically active?
a. ocean-ocean convergent
b. transform
c. ocean-continent convergent
d. divergent
I believe the answer might be B. transform
I hope I helped any, have a lovely day!!! (:
why is this technique Punnett squares used to calculate the probability of genotypes and phenotypes of one child. In other words, why is it inappropriate to say "Two out of four of their children will have brown hair?
I don’t understand this help meeee
Answer:
A Punnett square allows the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes. A Punnett square can be used to determine a missing genotype based on the other genotypes involved in a cross. It is inappropriate to say "Two out of four of their children will have brown hair because the genes could are not always going to give you what you think you are going to get. Using punnett squares just predicts the outcome, but doesn't necessarily know 100%
Explanation:
Compare Suspect 1 (S1) and Suspect 2 (S2) to the DNA evidence sample (E). Based upon the DNA fingerprints, which suspect was likely at the crime scene and why
Hello. Your question is incomplete and more information would be needed so that it could be answered accurately. However, I will try to help you in the best possible way.
As we know, fingerprints are formed by a unique pattern of lines that are not repeated between individuals. Thus, in order to discover who is a criminal, through the analysis of fingerprints, it is important to identify the pattern of lines left at the scene of the crime and analyze it with the pattern of lines in the suspect's fingerprint.
Can someone help me find the words?
Word search only answer if you an expert at it PLEASE
Answer:
so u see
Explanation:
If a cell contains 96 chromatids in metephase I of meiosis I, how many chromosomes will the daughter cells contain after meiosis II?
Answer:
After meiosis II each daughter cell contain 24 chromosomes.
Explanation:
Four daughter cells are produced in a single meiosis. so each cell recieve only 24 chromosomes.
This table is simplified. It is missing a few taxa. What levels are missing and where do they
belong in the table?
A. class, order, and family go between phylum and genus
B. class, family, and order go between kingdom and phylum
C. class goes after kingdom, order goes after phylum, and family goes after genus
D. order goes after kingdom, family and class go after phylum
Answer:
c
Explanation:
The purpose of studying the insects at a crime scene is to help establish _____.
the postmortem interval
the identity of the suspect
the identity of murder weapon
the way the person died
Answer:
the identity of the suspect
Explanation:
Hope you like it.
Answer:
the postmortem interval.
Explanation:
I'm guessing because none of the others make sense to me.
What do you think?
African elephants once existed in large populations across the African continent. Elephants use their tusks to dig for water and food. Humans hunt and kill elephants for their tusks. Habitat loss and fragmentation have also reduced the total number of elephants and the size of elephant herds. Scientists estimate that the number of African elephants has decreased from several million to several hundred thousand. Population sizes range from over 100,000 individuals in Botswana to approximately 100 individuals in northern Cameroon. Scientists have also found that the frequency of elephants that never develop tusks is increasing.
Select all the statements that describe probable effects of poaching and habitat fragmentation on clephant evolution
a. The elephant population in Botswana will experience high levels of genetic drift.
b. The poaching of elephants for their tusks is leading to the evolution of tuskless elephants.
c. Having tusks does not provide a selective advantage to African elephants.
d. Habitat fragmentation leads to decreases in population size and increases in genetic drift.
e. The elephant population in Cameroon will experience high levels of genetic drift.
Answer:
Option D
Explanation:
In habitat fragmentation, a large ecosystem or habitat of any species is converted into small ecosystems in such a way that each small ecosystem remains isolated from each other. Being isolated , random genetic drift comes in picture and reduces the gene flow with in the isolated habitats.
Hence, option D is correct
List 3 ways that microwaves are beneficial to society
Which of the following are classified as blood vessels? Check all that apply.
ventricles
arteries
capillaries
lymph nodes
veins
I believe the answers are arteries, veins, and capillaries. (:
Answer:
arteries
capillaries
veins
Explanation:
6. What blood type is shown in the picture?
A
Rh
B
Answer: there is no picture lol
Explanation:
The driving force presented by Wegener for his hypothesis was that continents ploughed through ocean crust.
Answer:
"Alfred Wegener suggested that continental drift occurred as continents cut through the ocean floor, in the same way as this icebreaker plows through sea ice. ... The supercontinent later broke apart and the continents having been moving into their current positions ever since. He called his hypothesis continental drift."
Which of the following flows through ecosystems in one direction?
A.water
B.energy
C.carbon
D.nitrogen
Answer:
B energy
Explanation:
because I just know D.
The energy flows through ecosystems in one direction. so the correct option is B. Firstly the energy flows from the sun to autotrophs, or producers. Then it further flows from producers to consumers. Energy never flows backward from consumers to producers.
What is ecosystem?An ecosystem is refers to as a geographic area in which plants, animals, and other organisms, as well as weather and landscapes, work closely to form a bubble of life.
On average only about 10% of energy stored as biomass in a trophic level and is passed from one level to the next. This is called as the 10 percent rule and it limits the number of trophic levels an ecosystem can support.
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suppose you had 4.0 moles of solute dissolved into 2.0 liters of solution. what is the molarity
Answer:
M
=
2.0
m
o
l
L
−
1
Explanation:
The molarity,
M
of this solution can be calculated by a formula which is;
M
=
n
V
where;
M
= Molarity of solution
n
=Number of moles of solute
V
= Volume of solution in Litre
Given,
n
=
4.0
moles and
V
=
2.0
L, so we have enough information to calculate the molarity of the solution;
M
=
n
V
M
=
4.0
2.0
m
o
l
L
−
1
M
=
2.0
m
o
l
L
−
1
or
M
=
2.0
m
o
l
d
m
−
3
if the questions mention volume of solution in
d
m
3
because
L
=
d
m
3
Emily has a maternal grandfather who is colorblind, which is an X-linked
recessive trait. Everyone else in her family sees normally. Emily's mom is
expecting a new baby girl. What is the chance that the new baby will also
be colorblind?
A. There is no chance that the new baby girl could be color blind.
B. There is no way to determine this from the information provided.
C. There is a 25% chance that the new baby girl will be colorblind.
D. There is a 50% chance that the new baby girl will be colorblind.
Answer:
A
Explanation:
the father doesn't have the trait and since it's recessive, there's no way the baby could have it even if the mother carries it from the grandfather.
There is a 25% chance that the new baby girl will be colorblind. Therefore, the correct option is C.
What is colorblindness?Color blindness is an X-linked recessive trait. This means that the gene responsible for color blindness is located on the X chromosome, and the trait is expressed only when there are two copies of the gene, one on each X chromosome, in females. Males have only one X chromosome, so they will express the trait if they inherit the colorblind gene.
In Emily's family, her maternal grandfather is colorblind. This means that Emily's mother is a carrier of the colorblind gene, since she does not have the trait herself. Emily's father must have two normal copies of the gene, since he does not have color blindness.
When Emily's mother and father have a child, there are four possible combinations of their genes that the child could inherit:
Normal X from mother, Normal X from father (25% chance)
Normal X from mother, Colorblind X from father (25% chance)
Colorblind X from mother, Normal X from father (25% chance)
Colorblind X from mother, Colorblind X from father (25% chance)
Only the last combination would result in a colorblind female, since she would have two copies of the colorblind gene. Therefore, the chance that the new baby girl will be colorblind is 25%.
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How does a flash flood compare to flooding?
Answer:
Flood: An overflow of water onto normally dry land. ... Ponding of water at or near the point where the rain fell. Flooding is a longer term event than flash flooding: it may last days or weeks. Flash flood: A flood caused by heavy or excessive rainfall in a short period of time, generally less than 6 hours.
Explanation:
Answer:
They both cause floods and fill up some places and they are both sometimes caused by rains or broken dams for a pretty long time. Flood is caused by rain and bad weather while flash flood is the result of water overflowing from a contained location like a lake, river or reservoirs. Flood is a term that can be used to describe any type of water overflow while flash floods are specific to broken dams, overflowing lakes and clogged rivers. The word flood both stands for their meaning.
In the Cori cycle, when glucose is degraded by glycolysis to lactate in muscle, the lactate is excreted into the blood and returns to the liver. In the liver, lactate is converted back into glucose by gluconeogenesis. For each given enzyme, identify whether it is involved in the glycolysis pathyway, gluconeogenesis pathway, both pathways, or neither pathway.
1. glyceraldehyde 3-phosphate dehydrogenase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
2. glucose-6-phosphatase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
3. alcohol dehydrogenase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
4. phosphoenolpyruvate carboxykinase
a. glycolysis
b. gluconeogenesis
c. both
5. phosphofructokinase-1
a. glycolysis
b. gluconeogenesis
c. both
d. neither
6. phosphoglycerate mutase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
7. hexokinase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
8. pyruvate dehydrogenase
a. glycolysis
b. gluconeogenesis
c. both
d. neither
Answer:
The correct answer is -
1. c. both
2. b. gluconeogenesis
3. d. neither
4. b. gluconeogenesis
5. a. glycolysis
6. c. both
7. a. glycolysis
8. d. neither
Explanation:
Gluconeogenesis is the formation or synthesis of glucose while glycolysis is the conversion of glucose into pyruvate. Gluconeogenesis requires an enzyme for a non-reversal reaction which is not required in glycolysis.
Glyceraldehyde 3-phosphate dehydrogenase is an enzyme present in glycolysis that converts glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate. It is a reversible reaction, this enzyme also present during gluconeogenesis converts 1,3-bisphosphoglycerate to glyceraldehyde 3-phosphate.
Glucose 6-phosphate to glucose during gluconeogenesis by glucose-6-phosphatase. Alcohol dehydrogenase is used for the conversion of ethanol into acetaldehyde and neither present in glyconeogenesis nor glycolysis. Oxaloacetate converts to phosphoenol pyruvate during gluconeogenesis by Phosphoenol pyruvate carboxykinase.
Fructose 6-phosphate changes into fructose 1,6-bisphosphate by Phosphofructokinase-1 during glycolysis.
Phosphoglycerate mutase is present in both pathways during glycolysis and during gluconeogenesis. This enzyme converts 3-phosphoglycerate to 2-phosphoglycerate and also converts 2-phosphoglycerate to 3-phosphoglycerate in glycolysis and gluconeogenesis respectively.
Hexokinase converts glucose to glucose 6-phosphate during glycolysis. However, Pyruvate dehydrogenase neither present in glycolysis nor gluconeogenesis.
What must be true about the number of chromosomes in each sex cell (when compared to the number of chromosomes in body cells
Answer:
The number of chromosomes in sex cell must be haploid (1n) as compared to body cell which is diploid(2n).
Explanation:
Body cells are diploid while the sex cells are haploid. We can say that sex cells contain half number of chromosomes as compared to body cells.
The number of chromosomes in each s-ex cell is half the number chromosomes in body cells.
Chromosomes:Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our ‘haploid’ number 23. Of the 23 pairs, 22 are known as autosomes. The 23rd pair is made up of the s-ex- chromosomes, called the ‘X’ and ‘Y’ chromosome. These 46 chromosomes carry the g-enetic information that’s passed from parent to child through heredity.
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What percentage of people are likely to have mutations in their DNA?
Answer:
20 percent.
Explanation:
Hope this helps!
Has anyone done the How do males and females skeleton differ work sheet if so let me know. :)
A student prepares a cell homogenate from spinach leaves. She performs a cell fractionation experiment to determine the shortest amount time of centrifugation at 2000xg that will yield the highest percentage of chloroplasts in the pellet fraction. She splits the spinach homogenate into 5 equal parts and centrifuges the parts at 2000xg for 0, 5, 10, 15 or 20 min. She then determines the proportion of chloroplasts in the supernatant and pellet fractions. The controlled variable(s) in the student's experiment is/are:_____.
a. proportion of chloroplasts in each fraction.
b. use of same plant homogenate throughout.
c. time of centrifugation in minutes.
d. g-force of centrifugation.
Answer:
b. use of same plant homogenate throughout.
Explanation:
In an experiment, the controlled variable, also called the CONSTANT is the variable that is kept the same throughout the course of the experiment in order not to influence the result or outcome of the experiment.
In this question, a student performs a cell fractionation experiment to determine the shortest amount time of centrifugation (manipulated variable) at 2000xg that will yield the highest percentage of chloroplasts (responding variable) in the pellet fraction. In this experiment, the variable being controlled is same spinach plant homogenate used throughout.
which statement describes two organ systems working together to deliver nutrients to cells?
A. The excretory system removes excess nutrients from blood as it
makes urine.
B. The blood absorbs the nutrients that the digestive system obtains
from food.
C. The respiratory system transfers oxygen removed from nutrients
to the blood.
D. The molecules of important nutrients are made from food in the digestive system
Answer:
option B is the correct answer
Explanation:
the circulatory system and digestive system both are working to deliver food to each and every cell.
plz mark my answer as brainlist plzzzz.hope this will be helpful to you and plzzz.
B) The blood absorbs the nutrients that the digestive system obtains from food the two organ systems work together to deliver nutrients to cells.
The circulatory system and digestive system both are working to deliver food to each and every cell.
How do organ structures get meals to the cells?The digestive system converts the ingredients we consume into their simplest bureaucracy, like glucose (sugars), amino acids (that make up protein), or fatty acids (that makeup fat). The damaged-down meals are then absorbed into the bloodstream from the small intestine and the nutrients are carried to every mobile in the body.
These frame structures are all characteristic to maintain the cells in your frame: the circulatory, respiration, and digestive structures provide the nutrients and electricity your cells need to stay. The immune gadget protects these cells from pathogens.Your circulatory gadget, which consists of your coronary heart, blood, and blood vessels, is liable for transporting vitamins to the cells of your body. Particularly, nutrients are transported at some stage in your frame thru your blood thru capillaries, tiny blood vessels that join arteries to veins.
The cell consists of three components: the cell membrane, the nucleus, and, between the 2, the cytoplasm. In the cytoplasm lie complicated arrangements of first-class fibers and loads or maybe hundreds of minuscule but awesome structures known as organelles.
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help due in 15 mins:(
Answer:
16
Explanation:
Antibiotics can be used to kill the specific pathogenic bacterium, Mycobacterium tuberculosis, that causes tuberculosis. The appearance of antibiotic-resistant strains has made it more difficult to cure M. tuberculosis infections. These antibiotic-resistant bacteria survive and pass on the genes to their offspring, making the resistant phenotype more common in the population. DNA analysis indicates that the genes for antibiotic resistance are not normally present in bacterial chromosomal DNA. Which of the following statements best explains how the genes for antibiotic resistance can be transmitted between bacteria without the exchange of bacterial chromosomal DNA
a. The antibiotic-resistant bacteria release a hormone that signals neighboring bacteria to become resistant
b. The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria.
c. The antibiotic-resistant bacteria are the result of bacteria that specifically modify their own chromosomal DNA to neutralize the antibiotics
d. The antibiotic alters the bacterial genome of each bacterium, which results in an antibiotic-resistant population
How do you know your answer is the correct one?
Answer:
b. The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria.
Explanation:
Conjugation refers to the process where one bacterium known as 'donor' transfers genetic material to another bacterium by direct contact. Conjugation enables bacteria to transfer genes that encode proteins conferring antibiotic resistance to another bacteria by transferring plasmids (i.e., small, extrachromosomal DNA molecules) containing these genes, which is known as horizontal transference. Plasmids that contain multiple antibiotic resistance genes confer Multidrug drug resistance (MDR) and they may severely limit the therapeutic efficacy of treatments against bacteria.
There are different kinds of antibiotics. The statement that best explains how the genes for antibiotic resistance can be transmitted between bacteria without the exchange of bacterial chromosomal DNA is that;
The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria.Bacteria are known to be able to get antibiotic resistance genes from other bacteria in different ways. It can be gotten when they undergo a simple mating process referred to as "conjugation".
Bacteria are known to transport genetic material such as genes encoding resistance to antibiotics that are resident on plasmids and transposons. This can be transferred from one bacterium to another.
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