Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
Below is Bohr model of an Atom. Scientists have claimed that the nucleus
of the atom is positively charged. In 3 - 5 sentences, describe a test (or an
experiment) to prove that this claim is true.
Answer:
Bohr claimed that the nucleus is positively charged . Though nucleus have protons and neutrons. Neutrons are neutral particles as they have no charge but protons are positively charged .
What happens at the end of the transcription process?
RNA is copied to form messenger RNA, also called mRNA.
DNA produces another copy of itself, also called dDNA.
RNA is copied into a duplicate copy of RNA, also called dRNA.
DNA produces messenger RNA, also called mRNA.
Answer:
DNA produces messenger RNA, also called mRNA.
Consider the impact of each substance on cellular respiration. Each substance has an influence at the cellular level, and has no effect on hunger. Assume that the substances have no other impact on the cell other than the one described. Substance’s Effect: Makes the lipid bilayer of the inner mitochondrial membrane highly permeable to (H+) protons. Does it cause weight gain or loss?
Answer:
The correct answer is "Weight loss".
Explanation:
If the influence of material is such that it adversely affects the attachment of NAD+ to electrodes, it can help people lose weight. This because it will indeed necessarily imply that perhaps the ATP throughout the cells would've been whittled down unless the compound NADH could not have been established. This also suggests that because the body doesn't obtain adequate ATP, this also contributes to the breakdown of fat into some kind of type of stored energy which always promotes weight loss throughout the turn.Do all of the cells in your body look exactly the same and have
exactly the same function/job?
Identify What two words are used to describe
the number of cells in an organism?
(Q005) Humans are unusual because our cultural practices can actually change our environmental circumstances. We can change the environment in which natural selection acts on our traits. Describe how this process has played out in the evolution of adult lactose tolerance. Can you hypothesize any similar situations where our future evolution may be influenced by cultural practices we have today
Answer:
Lactose tolerance conferred an evolutionary advantage, thereby this beneficial mutation increased its frequency in the population
Explanation:
Originally, adults were unable to digest lactose. But approximately 8,000-10,000 years ago something remarkable happened: a mutation near the gene that produces the lactase enzyme appeared in a raising cattle population from Europe-Middle East, making adults able to digest lactose. Nowadays, many adults from different societies are tolerant to digest lactose because this mutation increased its frequency and extended to different populations. It is a classical example of how a beneficial mutation may eventually become the most common gene variant by increasing its frequency in the population, and, subsequently extending to other populations. It is possible to hypothesize that new mutations associated with human activities may appear in current human societies, thereby conferring an evolutionary advantage in the same way that lactose tolerance in cattle-raising people. For example, nowadays, mutations in human behavior-associated genes might confer beneficial social skills (thereby increasing the frequencies across time or across populations).
When a substance undergoes a chemical change, the chemical _________ of that substance is altered.
Fill in the blank
Answer:
Properties
Explanation:
5 Some students were asked to identify which cells contain the greatest number of
mitochondria. They were given the following choices: blood, epidermal, cardiac, and
nerve cells. Which of the following is the best response?
A Blood cells, because they must carry oxygen throughout the body all the time,
which requires energy.
B Nerve cells, because energy is needed to relay messages throughout the body
C Cardiac muscle cells, because the heart must work all the time, requiring constant
energy.
D Epidermal cells, because the skin must constantly grow new skin cells, which
requires energy.
Answer:
C.) Cardiac muscle cells, because the heart must work all the time, requiring constant
Explanation:
Our heart muscles contain so much mitochondria because those muscles are very active in our body and require lots of energy to constantly pump blood through our circulatory system. Mitochondria produce energy in the form of ATP from glucose (sugar) in our cells.
In an experimental investigation, the group that is not manipulated by the researcher and is then compared to the experimental group is called the _______
group.
Answer:
Control group
Explanation:
this DNA strand consists of eight pairs of nitrogenous bases. how many different sequence of eight bases can you make? explain your answer.
Answer:
In the sequence of 8, it would be 4 (possible bases) to the power of 8 because you need to multiply 4, eight times for the number of sequences. Therefore, the answer is 65, 536 possible sequences.
Explanation:
without oxygen what will brain cells do
Answer:
They will die.
Explanation:
Without oxygen, the brain's cells cannot metabolize glucose, and therefore cannot convert glucose into energy. When your brain is deprived of oxygen, then, the ultimate cause of brain death is inadequate energy to power the brain's cells.
Answer:
Brain cells are destroyed after 4 to 6 minutes without oxygen
Explanation:
Calculate the final concentration of BSA in the problems below using the formula
C1*V1 = C2*V2,
where C1 and V1 are the concentration and volume of the starting solution, and C2 and V2 are the concentration and volume of the final diluted solution. Include proper units and show your work for full credit.
A. 300 ul of 5 mg/ml BSA is added to 700 ul TBS
B. 50 ul of 1.5 mg/ml BSA is mixed with 450 ul H2O and 500 ul Bradford Reagent
C. 10 ul of 1 mg/ml BSA is mixed with 990 ul TBS.
D. 10 ul of 0.1 mg/ml BSA is mixed with 990 ul TBS.
Answer:
A. [tex]C_2=1.5\frac{mg}{mL}[/tex]
B. [tex]C_2=0.075\frac{mg}{mL}[/tex]
C. [tex]C_2=0.01\frac{mg}{mL}[/tex]
D. [tex]C_2=0.001\frac{mg}{mL}[/tex]
Explanation:
Hello.
In this case, we must compute the final concentration in all the cases so we solve for it in the given equation:
[tex]C_2=\frac{C_1V_1}{V_2}[/tex]
Thus, we proceed as follows:
A. Here, the final diluted solution includes the 300 μL of the 5 mg/ml-BSA and the 700 μL of TBS.
[tex]C_2=\frac{300\mu L*5\frac{mg}{mL} }{(300+700)\mu L}\\\\C_2=1.5\frac{mg}{mL}[/tex]
B. Here, the final diluted solution includes the 50 μL of the 1.5 mg/ml-BSA, the 450 μL of water and the 500 μL of TBS.
[tex]C_2=\frac{50\mu L*1.5\frac{mg}{mL} }{(50+450+500)\mu L}\\\\C_2=0.075\frac{mg}{mL}[/tex]
C. Here, the final diluted solution includes the 10 μL of the 1 mg/ml-BSA and the 990 μL of TBS.
[tex]C_2=\frac{10\mu L*1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.01\frac{mg}{mL}[/tex]
D. Here, the final diluted solution includes the 10 μL of the 0.1 mg/ml-BSA and the 990 μL of TBS.
[tex]C_2=\frac{10\mu L*0.1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.001\frac{mg}{mL}[/tex]
Best regards.
Which of the following statements correctly describes some aspect of protein excretion in prokaryotic cells? a Prokaryotes are unlikely to be able to excrete proteins because they lack an endomembrane system. b The mechanism of protein excretion in prokaryotes is probably the same as that in eukaryotes. c Proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. d In prokaryotes, the ribosomes that are used for the synthesis of secreted proteins are located outside of the cell. e Prokaryotes contain large pores in their plasma membrane that permit the movement of proteins out of the cell.
Answer:
The correct answer is option c "Proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane".
Explanation:
Many prokaryotes secrete proteins, particularly, extracellular enzymes that have a function outside the cells and toxins that are not needed by the cell. As any other protein, proteins that are excreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. However, excreted proteins go to the general secretion (Sec) pathway, where they are tagged and further processed.
Consider the following events that take place when rip
currents occur.
Which list shows the order of events in the productie
rip currents?
A. Waves travel to the beach.
B. Waves are trapped by the sandbars.
C. Waves reach the shore and go back to the ocean.
D. Waves speed up and flow between the sandbars.
E. Waves are broken by the sandbars.
O A, B, C, D, E
O A, D, C, B, E
O A, E, C, B, D
O A, E, C, D,B
Answer:
Its C, I took the quiz.Explanation:
Sorry this is lateAnswer:
c
Explanation:
name 3 non examples of bacteria.
Answer:
Fungi,plant cells and red blood cells
Explanation:
Bacteria are prokaryotic cell and so they lack a nucleus and therir genetic material lies naked in their cytoplasm. Ther are very small compared to eukaryotic cells such as plant cells, red blood cells and stem cells. They're very large compared to viruses.
In what order do the electrons move through the electron transport chain?
Answer:
Four Stages: Glycolysis (a transition reaction that forms acetyl coenzyme) A, the citric acid (Krebs) cycle electron transport chain, and chemiosmosis.
Explanation:
The flow of electrons through the components of the electron transport chain occurs in order of increasing reduction potential.
Electronic transport chain is the set of enzymatic complexes embedded in the mitochondrial membrane that oxidize NADH and FADH2, generating a proton gradient.
It basically comprises 2 processes:.
1) Electrons are transported across the membrane, from one carrier protein complex to another.
2) Protons are translocated through the membrane, which means that they are passed from the interior or mitochondrial matrix to the intermembrane space causing a proton gradient.
Oxygen is the final acceptor of the electron, combining with them and the H ion to produce water.
This chain comprises numerous associated components in the form of enzyme complexes, each of which has transmembrane proteins that support the complex on the inner mitochondrial membrane, an Fe-S flavoprotein, ubiquinone, and the cytochrome chain.
The electrons start out in order with very high energy, which they lose as they pass through the chain. In other words, the carrier molecules are reduced and oxidized, lowering electrons from high energy levels to lower ones.
Therefore, we can conclude that the flow of electrons through the components of the electron transport chain is carried out in order from high energy levels to lower ones.
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How does cellulose affect the cell wall in plants?
a)Cellulose is the material used to keep the cell wall rigid.
b)Cellulose allows water to pass through the cell wall.
c)Cellulose allows light to pass through the cell wall.
d)Cellulose prevents water loss in plants.
Answer:
a)Cellulose is the material used to keep the cell wall rigid.
Explanation:
3 The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Enzyme Reaction Rates
Rate of Reaction
inn
n
0
8
10
12
10 20 30 40
Temperature (°C)
Based on these data, this enzyme functions best at what temperature and pH?
A Temperature of 27°C and a pH of 4
B Temperature of 37°C and a pH of 6
C Temperature of 40°C and a pH of 8
D Temperature of 50°C and a pH of 10
Which of the following is the covering of the muscle cell?
Question 6 options:
sarcomere
sarcoplasm
sarcolemma
sarcoplasmic reticulum
Answer:
sacomere
atau sacoplasmic reticulum
(04.06 MO)
Which of the following is an advantage of aquaculture expansion?
1. Highly efficient
II. Uses less water
III. Uses less fuel
IV. Prevents disease
I and II only
Ob
I and III only
C
I, II, and III
Od
HI, III, IV
Answer:
1, 2 and 3. it's efficeint and uses less water and less fuel but a downside of aquaculture is that disease spreads fast, not slow.
Explanation:
i just turned in the assignment and it's right. check the assigned reading it says the answer
The advantage of aquaculture expansion is that this technique uses less fuel (Option III).
Aquaculture refers to the techniques involved in obtaining aquatic organisms in a controlled aquatic environment.The aquaculture techniques include, among others, breeding, rearing, and harvesting fish and algae.The main classes of aquaculture techniques may be divided into marine aquaculture and freshwater aquaculture.In conclusion, the advantage of aquaculture expansion is that this technique uses less fuel (Option III).
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Which of the moon's properties prevents it from being pulled inward by Earth?
Explanation:
I think so the answer is inertia
plzzzz mark my answer as brilliant
Answer: INERTIA
Explanation: Quizlet saves lives/ it remains in a state of motion without being disturbed! Have a great night and pls lemme know if this helps! :)
When do you think the world's population will stop growing? Answer in a paragraph please (:
Answer:
Please read below
Explanation:
The worlds population won't stop growing till something bad in the wrold happens like a war or the fertility rates drop to an all time low.For example if a lot of people are out at a war the frertility rates are going to be low and the death rates will be high.Therefore the population will stop growing and will decrease or stay the same.
Which of the following best describes the formation of the bond shown in Figure 1 ?
А
An ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid,
B
An ionic bond is formed when the negative charge of an OH group is balanced by the positive charge of a hydrogen ion.
с
A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H2O
D
A covalent bond is formed that replaces the hydrogen bond between the OH group and the H atom,
Answer: it is c, a covalent bond
Explanation:
If you could make a new model of the Earth, what materials would/could you use and why? (Explain)
Please help me
Answer:
you could use a ball of styraphomeExplanation:
Because the earth is a circle and it would look similar you would also need to add some colorWhere did Darius build a new capital?
Answer:
Persepolis and Susa, which replaced Pasargadae as capital of the Persian empire
Explanation:
54:3
During the light-dependent reaction of photosynthesis, light energy is converted into which form of energy?
chemical
mechanical
othermal
electrical
Answer:
The answer would be chemical
Explanation:
This is because oxygen, carbon dioxide and sunlight is part of chemistry.
1. What did Linnaeus use to classify living things?
Answer:
Perhaps the single greatest contribution Linnaeus made to science was his method of naming species. This method, called binomial nomenclature, gives each species a unique, two-word Latin name consisting of the genus name and the species name. An example is Homo sapiens, the two-word Latin name for humans.
Explanation:
Can I have brainliest
It is from Google
Binomial nomenclature, which Carolus Linnaeus created, is a system for categorizing living things. Linnaeus was a Swedish botanist and biologist.
Binomial nomenclature is a biological system for naming organisms.
It is quite difficult to identify an organism internationally and keep track of the number of species when it has multiple local names.
Some of the features of binomial nomenclature that Linnaeus used to classify living things are:
Latin names are used because they are universal and consistent.
The process of naming each organism uniquely using the two words "genus" and "species."
The arranging of living things into a hierarchy, with each organism being given a position based on how similar it is to others.
Humans, for instance, are known as Homo sapiens. Its name, Homo, translates to "man" in Latin. The name of the species, sapiens, means "wise".
Therefore, Binomial nomenclature is used by Linnaeus to classify living beings.
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A process that may return carbon to
the soil is
A. "locking" carbon.
B. decomposition.
C. respiration.
Answer:
B. Decomposition
Is your answer
The process of returning carbon to soil is referred to as decomposition. The correct option is C.
What is decomposition?Decomposition, also known as rot, is the breakdown of dead organic matter into relatively simple organic or inorganic matter including such carbon dioxide, water, simple sugars, and mineral salts.
It is the way to transfer carbon back to the soil. Water is also decomposed into hydrogen and oxygen.
Thus, the correct option is B.
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Which of the following best describes the flow of energy through a food chain
Answer:
C.Energy flows from primary producers to consumers, in one direction only.
Explanation:
your welcome
The one that best describes the flow of energy through a food chain is energy flows from primary producers to consumers, in One Direction only. The correct option is c.
What is food chain?A food chain is a linear network of links in a food web that begins with producer organisms and ends with an top predator, detritivores, or decomposer species.
A food chain also shows how organisms are related to one another through the food they consume. Every level of a food chain corresponds to a distinct trophic level.
Food chains are significant because they reveal the intricate relationships that exist within ecosystems.
They can show how each organism is dependent on another for survival. Food chains also show what happens when a problem occurs and a producer or consumer is lost. Entire communities can crumble.
Thus, the correct option is c.
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Your question seems incomplete, the missing options are:
a. Energy flows between primary producers and consumers, in either direction
b. energy flows from consumers to primary producers, in One Direction only
c. energy flows from primary producers to consumers, in One Direction only
d. energy flows between primary producers and consumers, in an endless cycle
Compare What do complex organisms
have that makes them different from simple
organisms?
Answer:
Simple Organism
some simple organisms are made of single cell. Others are made of many cells that are similar
Complex organisms
in complex organisms, cells are organized into tissues, which make up organs. Organs form organ systems.
Explanation: im not sure if its correct but i hope it helps
