Answer:
e
Explanation:
The main reason such an elaborate device was used would be to eliminate any element of bias by the researcher.
It is important to eliminate biases when taking measurements so as to ensure the accuracy of the data and the overall outcome of the experiment. If a simpler device had been used in which the researcher manually records the length of the bones, it is possible to knowingly or unknowingly introduce biases or random error into the experiment which will impact the integrity of the data and the outcome of the experiment.
The correct option is e.
Which of the following is not a reason for cell devision?
A. DNA cannot be copied quickly enough in large cells
B.The cell gets too big to process and transport nutrients
C. Surface area to volume ratio becomes to large
D.New cells are needed for growth
Answer:
C
Explanation:
thats not true
RER makes what for the cell?
Answer:
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
Explanation:
a. Review What are the major elements of life?
b. Relate Cause and Effect What properties of
carbon explain carbon's ability to form different
large and complex structures?
a. Review Name four groups of organic compounds
foundin living things.
b. Explain Describe at least one function of each
group of organic compounds.
c. Infer Why are proteins considered polymers but
lipids are not?
Answer:
1. The major elements of life are Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus and Sulfur.
2. Its ability to catenate; its ability to form bonds easily with other elements such as hydrogen, oxygen and nitrogen; its ability to form single, double and triple.
3. Carbohydrates, Proteins, Lipids, and Nucleic acids
4. Carbohydrate provide energy; Proteins serve as structural elements;
Lipids serve as structural components of membranes;
Nucleic acids store and transmit genetic information
5. Proteins are considered polymers while Lipids are not because proteins are composed of monomeric subunits of amino acids whereas lipids do not have monomeric subunits.
Explanation:
1. The major elements of life are Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus and Sulfur as they are found in many structures of living organisms- in proteins, carbohydrates, nucleic acids and lipids.
2. Carbon has the ability to form different large and complex structures because:
(I) its ability to catenate which is the ability to combine with one another to form straight, branched chain or ring compounds containing many carbon atoms.
(ii) carbon can form single, double and triple with itself and other life elements.
(iii) the relative stability of the covalent bonds formed by carbon.
3. Four groups of organic compounds found in living things are Carbohydrates, Proteins, Lipids, and Nucleic acids.
4. Carbohydrate provide energy; Proteins serve as structural elements;
Lipids serve as structural components of membranes;
Nucleic acids store and transmit genetic information
5. Polymers are large molecular weight compounds built up from subunits called monomers.
Proteins are considered polymers because they are large molecular weight molecules composed of monomeric subunits of amino acids.
Lipids are not considered polymers because individually, they are not very large molecules and do not have monomeric subunits rather are composed of long fatty acids chains linked to a glycerol molecule.
If grasshoppers were removed from this food web, which organism would suffer the most, the bird or the baboon?
Answer:
birds are suffer the most
In plants, yellow pea color (Y) is dominant over green pea color (y). Two heterozygous plants (Yy) are crossed. Which of the following results supports Mendel’s Laws
1.All of the yellow offspring are heterozygous for color.
2.all of the offspring have genotype Yy.
3.All of the offspring are yellow.
4. The offspring could be yellow or green.
Answer: .All of the yellow offspring are heterozygous for color.
Explanation: do your chart
The offsprings could be yellow or green since the genotypes obtained after cross will be YY, Yy and yy Therefore, option (4) is correct.
What are Mendel' law?The following is an outline of Mendel's laws of inheritance:
The principle of dominance is the foundation of the laws of inheritance. The law specifies that hybrid offspring will only inherit the dominant phenotype. The alleles that do not show in an individual are referred to as recessive traits, whereas the alleles that do manifest are referred to as dominant traits.
The alleles for each gene separate from one another during the process of gamete creation, ensuring that each gamete carries just a single copy of each allele for the genes that it contains. This is known as the law of segregation.
The law of independent assortment states that genes for various characteristics might segregate in an unrelated fashion while gametes are being formed.
Learn more about Mendel's law, here:
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please help please help please help please help please help please help please help please help
Answer:
-468
Explanation:
y varies directly with x, so when you divide -354 and 59, you get -6. You multiply 78 by -6, and you get -468.
Hope I helped:)
WILL GIVE BRAINLIEST!!!!!
Vesicles, like all membranes are made of
nucleic acids
lipids
carbohydrates
proteins
Answer:
lipid
Explanation:
it has a lipid layer enclosed
What role does intraspecies competition play in natural selection?
A. There is competition within a species for resources, and only some individuals will survive.
B. There is competition within a species for resources, and only the single most fit individual will survive. ( ITS NOT B)
C. There is competition between species for resources, and only one species will survive.
D. There is competition between species for resources, and only one individual per species will survive. ( I don't think it's this one...)
After reading the paragraph below, answer the questions that follow.
Researchers set up a study to determine whether large doses of a nutritional supplement would shorten the length of time it takes to recover from a cold. Three thousand volunteers were split into two groups. For two weeks, members of group A took 3,000 mg of the supplement daily. Group B received 3,000 mg of a placebo (sugar pill). At the end of the two-week period, the Tesearchers inserted live cold viruses directly into the noses of all the volunteers. The volunteers in both group A and group B continued to take their daily pills. All the volunteers got colds, and there was no significant difference in the length of time the colds lasted.
1. Which was the experimental group?
A) group A only
B) group B only all 3,000 volunteers
2. To have confidence that the results of the experiment were valid, you'd also want to know:_______
A) whether any volunteers had colds at the start of the experiment.
B) whether the volunteers exercised daily.
C) whether the volunteers all worked for the same company.
After reading the paragraph below, answer the questions that follow Researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. The robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract.
3. If the creators of the robot wanted to provide evidence that it is alive, which of the following properties would be best to use as evidence?
A) The robot can move. "
B) The robot must be bathed in a liquid medium to provide nutrition for its cells.
C) New robots can be reproduced by researchers using the same manufacturing process.
D) The robot has two different types of cells, fibroblasts and cardiac cells.
4. All of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. This is an example of:_________
A) adaptation.
B) emergent properties of cells.
C) energy flow through an ecosystem.
D) internal environment regulation.
Answer:
Explanation:
For the first paragraph
1) The only experimental group is the group that took the supplement of 3000 mg. Experimental groups are groups that receive treatment during the course of an experiment. The treatment in this experiment is the nutritional supplement and group A was the only group that received that hence the correct option is A.
2) To have confidence in the result, it will be important to note if there were volunteers who had cold at the beginning of the experiment. Because if there were volunteers who had cold at the beginning of the experiment and were part of the experimental group, that could mean those volunteers didn't respond to the treatment because of underlying health condition which could be the cause of there own cold and might have to be treated based on the underlying condition thus negating the aim of the experiment which was to treat cold and not any underlying health condition. Hence, the correct option here is A
For the second paragraph
3) Since the only living property that the robot has according to the passage is movement then option A is the correct answer. There is no evidence from the passage that the robot can derive nutrition from food source from the passage. Also reproduction as a living property must be undertaken by the individual living organism in question; here researchers are the ones undertaken the reproduction and thus is not the property of the robot. Also, there is no evidence from the passage that the robot has fibroblasts.
4) The correct option here is B. Emergent properties of cells are collective properties that convey a particular attribute that cannot be achieved individually. The question says the cardiac cells will have to come together to cause the attribute of movement that cannot be achieved individually
Adding or removing heat from a system may result in a temperature change. Ben found a penny outside on the hot sidewalk. He brought it inside and added it to a cup of room temperature water. What will happen to the penny’s temperature once he puts it in the cup of water?
A. the heat will transfer from the water to the penny
B. the heat will transfer from the penny to the water
C. the penny will not change temperature
D. the penny will change state
Answer:
I'm pretty sure the answer is B
Explanation:
Why doesn't the glassblower tell the truth to the wizard?
If a father has type A blood and the mother has Type AB blood, they would NOT have a child with which of the following blood types?
AB
A
B
O
Answer:
If a father has type A blood and the mother has type AB blood, they cannot have a child with blood type O, although depending on the father's genotype, they may not have children with a B blood type either.
Explanation:
Blood type is determined by the presence or absence of surface antigens A and B, which is genetically determined and establishes the pattern of inheritance.
Alleles that define the presence of antigens A and B are co-dominant, while the absence of antigens - as in blood type O - is a recessive trait.
Type A contains antigen A and its genotype can be A|A or A|O. Type B contains the B antigen, whose genotype can be B|B or B|O. Blood type AB contains both antigens and a single genotypic expression A|B Type O blood lacks surface antigens, with genotype O|O.The father with blood type A can have two genotypes, A|A or A|O, which raises 2 possible scenarios:
1. Father A|O with mother A|B
Alleles A O
A A|A A|O
B A|B B|O
In this case there is no chance of having a child with blood type O, 50% chance of having children with blood type A, 25% B and 25% AB.
2. Father A|A with mother A|B
Alleles A A
A A|A A|A
B A|B A|B
50% chance of having a child with blood type A and 50% with blood type AB. In this case there is no chance of having children with blood type O or B.
What can hold more data?
1. DVD
2. CD
Answer:
DVDs hold about 6 times more data than CDs
Explanation:
I'm 100% sure
Answer:
2
Explanation:
take my word on It.
Question 1 of 10
In a cell, the two strands of a double helix of DNA do not unwind as expected,
which causes DNA replication to be blocked. What is most likely
dysfunctional in this cell?
A. Okazaki fragments
B. Helicase
C. DNA polymerasel
D. RNA primer
SUBMIT
It’s not RNA primer or DNA polymerase I got it wrong twice
it’s B; helicase.
just took the quiz.
A simple diagram of a DNA molecule is shown below. Which of the following is represented by X?
(photo above)
Answer:
From the diagram X = base pairs
Explanation:
Genetic information stored within DNA is used for growth, reproduction, and cell repair. DNA, deoxyribonucleic acids, are long-chain, helical macromolecules made of specific sequences of covalently bonded monomers called nucleotides.
Nucleotides comprise:
a 5-Carbon deoxyribose sugar, one nitrogenous base (adenine, guanine thymine, and cytosine) and a phosphate group.Nitrogenous bases cause nucleotides to form hydrogen bonds with other nucleotides as base-pairs. The four types of bases each make the nucleotides Thymine and Cytosine (pyrimidine bases) along with Guanine, and Adenine, (purine bases). In base-pair formation, Adenine forms double bonds with Thymine, and cytosine forms triple bonds with guanine.
All of the following can interfere with the breakdown of organic waste material in the soil except:
A
minerals
N
B
solvents
С
plastics
D
pesticides
Answer: A. Minerals
Explanation:
(i’m sorry this is so late)
All of the following can interfere with the breakdown of organic waste material in the soil except minerals. Thus, option A is correct.
What are minerals?There has been different kinds of the minerals. A mineral has been simply defined as any pure substance that has known to have the unique composition as well as structure. A rock has been simply known to be the combination or the mix up of the lot of different minerals and may sometimes include only one type of mineral.
It has been formed as the residual result from the parent material that had been undergone prolonged weathering the process. This part of the soil would be determine which has type of the plants has been capable in the absorbing the nutrient in that area and which plants that don't.
Therefore, All of the following can interfere with the breakdown of organic waste material in the soil except minerals. Thus, option A is correct.
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Each nucleotide is composed of three parts. The picture to the right shows a strand of DNA nucleotides linked together. What is the correct name of the molecule indicated?
Answer
F
Deoxyribose sugar
G
Nitrogenous base
H
Phosphate group
J
Hydrogen bond
Answer:
G. Nitrogenous base
Explanation:
Double-stranded DNA (Deoxyribonuclease) molecules store genetic information. Their 5-carbon deoxyribose sugar, phosphate and one of four nitrogenous bases from which nucleotides derive their name:
Adenine (A)Guanine (G)Cytosine (C)Thymine (T).The nucleotides on a single strand are bonded together via covalent bonding. Base pairs are formed between nucleotides on opposite strands, due to hydrogen bonding between bases. For instance, Adenine forms double bonds with thymine, while cytosine forms triple bonds with guanine.
The Calvin cycle takes place in the
A. stroma.
B. photosystems.
C. thylakoid membranes.
D. chlorophyll molecules.
Answer:
the answer is c
Explanation:
Answer:
A.Storma
Explanation:
thai is due really soon! like in 5 minutes! answer correct plz
Answer:
A thick, dense fur, keeps the fox warm during winter, by preventing excessive loss of temperature and body heat when it is cold.
What kind of mutation does not negatively or positively impact the host organism?
Answer:
neutral mutations
Explanation: i did this in class
There are 5 structures that every cell has which of the following is not one of those structures
Answer:the 3 one
Explanation:
a 100 watt electric bulb is used for five hours.how much energy is consumed by the bulb
Answer:
500Whr=0.5kWhr
1Joule=1 Watt×1Sec
100×5×60×60=1.8M joules
Answer:
0.5kWh
Explanation:
Given, power of the electric bulb,
P=100W=(100/1000)kW=0.1kW ;
time for which bulb is used, t=5h
As P=
[tex] \frac{w}{t} [/tex]
or W=Pt
or W=0.1kW×5h= 0.5kWh
what is the effect of molecule size on a molecule's ability to diffuse across a membrane?
Answer:
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
All of the following are examples of environmental influences on maturation except
A. heredity
B. physical activity
C. caregiver responsiveness
D. nutrition
The only factor that is not an environmental factor listed is heredity.
What are environmental influences ?
There are two kinds of factors that could affect an individual and these are;
Hereditary factorsEnvironmental factors.Environmental factors are those factors that are products of your surrounding. They do not depend on inheritance. The only factor that is not an environmental factor listed is heredity.
Learn more about heredity: https://brainly.com/question/869836
Answer:
A. heredity
Explanation:
hope this helps :)
Can someone please help
Answer: Equator
Explanation: the diameter of Earth at the equator is about 43 km (27 Miles)
If a pilot is traveling from Harrisburg to Philadelphia, what type of model can she most easily use to determine the distance between the two cities?
A. diorama
B. concept map
C. map
D. watershed drawing
Answer:
i think it is watershed map.
Explanation:
hope this helped :D
Please help! (50 points)
In a farm, soy beans were the only crop that was planted on several hectares of land. A farmer noticed fungus was growing all over the soy bean fields. Predict what might happen to the soy beans and the fungus.
Thanks!
Answer:
Tofu and soy oil come from soy bean plants that are grown on farms. Many farmers grow soy beans as cash crops that they can send to places such as tofu processing plants. Soybean plants are legumes. Legumes have bacteria on nodules which are on the roots of the plant. The bacteria on the nodules takes nitrogen from the air and fixes it into the soil, so that other plants that require nitrogen can use it as well.
This nitrogen cycle that was breifly discussed above is used in what farmers call a crop rotation. Farmers use soybeans and other legumes in roatations with grass crops such as corn or wheat. Grass crops are unable to take their own nitrogen from the air so they either need the nitrogen in the soil that the legumes provide for them in a crop rotation or they need a chemical fertilizer containing nitrogen. Many farmers choose to use both. Most farmers use a two or four year rotation on their fields. In a two year rotation a farmer will alternate a year of a legume such as soybeans and a year of a grass crop such as corn. In a four year rotation a farmer will alternate back and forth between legumes and grass crops just as in a two year rotation, but instead he will use four differnt crops. For example, a farmer may plant a rotation of soybeans, corn, alfalfa (a legume), then wheat (a grass).
when placed in a glucose solution, yeast cells will produce bubbles. which process are the yeast cells carrying out? A. chemosynthesis B. respiration C. photosynthesis D. transpiration
Answer:
B. respiration
Explanation:
There's a Quizlet called "Biology 1st 9 weeks review" (it's created by Rodgerst4) that helped me!The bubbles produced when yeast cells are placed in a glucose solution is because the yeast cells are carrying out respiration. The correction option would be B.
Yeast cells are able to carry out a type of respiration known as anaerobic respiration when placed in a suitable substrate medium like glucose. During this process energy in the form of ATP is generated in the absence of oxygen for the metabolism of the yeast cells. The equation of the reaction is as follows:
[tex]C_6H_1_2O_6 --->2 C_2H_5OH + 2 CO_2[/tex]
Thus, the carbon dioxide gas is released as bubbles in the solution as a result of respiration.
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To produce starch, glucose molecules bond together through
A. Cellular respiration
B. dehydration synthesis.
C. photosynthesis
D. nucleotides
Answer:
photosynthesis
Explanation:
plz pick me the brainliest
Glucose molecules bond together through DEHYDRATION SYNTHESIS to produce starch.
WHAT IS DEHYDRATION SYNTHESIS?
Dehydration synthesis is the process whereby larger molecules are formed from the coming together of smaller molecules accompanied by the release of water.HOW STARCH IS FORMED FROM GLUCOSE?
Glucose is a monosaccharide i.e. contains one sugar unit while starch is a polysaccharide i.e. contains many sugar units. Glucose molecules come together to form an α-1,4 glycosidic linkage. This joining process that eventually forms starch results in the loss of water molecule, hence, it is called DEHYDRATION SYNTHESIS.Glucose molecules (C6H12O6) bond together through DEHYDRATION SYNTHESIS to produce starch.
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Explain how mutations can alter a DNA strand and ultimately a protein structure. Make sure to include point mutation, frameshift mutations, insertion, deletion, substitution, and silent mutations.
Answer:
By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition
Explanation: