Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?
Answer:
Use 400 x in order to study the structure clearly.
Explanation:
Cell structures could be clearly identified when magnify the microscope about 400 x by using a compound microscope. Due to high magnification power of compound microscope, the individual is able to see different structures that are present in cells. while by using lower magnification, the individual is unable to see different structures clearly. So use high magnification in order to study the cell.
Which organelle transports material throughout the cell?
Cell Membrane
O Endoplasmic Reticulum
O Mitochdadria
O Lysosome
o
Answer:
lysosome I think.
Explanation:
Explain how scientific theories differ from scientific laws.
can there be a bias in a secondary source
Which structural component is found in DNA but not in RNA?
O ribose
O deoxyribose
O phosphate group
O nitrogenous base
Answer:
Deoxyribose
Explanation:
Neither deoxyrinose nor thymine is found in RNA.
The structural component found in DNA but not in RNA is deoxyribose.
What is DNA and RNA?Both DNA and RNA contain the same nitrogenous bases (adenine, guanine, cytosine, and uracil in RNA or thymine in DNA) and phosphate groups.
However, DNA contains deoxyribose sugar in its backbone, while RNA contains ribose sugar. The difference between the two sugars is that deoxyribose lacks an oxygen atom on the second carbon in the sugar ring, whereas ribose has an oxygen atom at that position. This difference in sugar composition is responsible for some of the unique properties of DNA, including its double-stranded helical structure and greater stability compared to RNA.
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The basic unit of the structure and function of living
things is the ____
Answer:
Cells
Explanation:
Organelles such as mitochondria and the endoplasmic reticulum have membranes that compartmentalize reactions and other metabolic processes. To
function properly, the organelles must move substances across their membranes.
Which of the following statements describes a feature shared by mitochondria and the endoplasmic reticulum that increases the efficiency of their basic
functions?
A
They have rigid, nonfluid membranes.
B
They have highly folded membranes.
С
They have membranes composed of many carbohydrates,
D
They have double membranes, with one membrane enclosed within the other
Answer:
b
Explanation:
In what way would bacteria that require a pH of 11 for
growth respond to being placed in an environment with a
pH of 2?
Answer:
Explanation:
If the bacteria is required to be in highly basic conditions, putting it in highly acidic conditions would disrupt the internal functions of the bacteria which tends to kill the bacteria.
The way that bacteria that require a pH of 11 for growth respond, replaced in a pH of 2, will respond in the way: the bacteria must be in extremely basic circumstances, exposing it to excessively acidic settings will disturb its internal functions, eventually killing it.
What is pH?The optimum pH for bacterial growth may differ. Some bacteria, known as acidophiles, can thrive in an acidic environment, while others, known as alkalinizes, can grow in a base environment, and the remainder, known as neutrophils, can grow in a neutral pH environment.
Bacteria can keep their internal pH stable by creating acid, base, or buffer. If the surrounding pH is too acidic, the bacteria can produce a base to reduce the H+ concentration. If the conditions are excessively alkaline/basic, the bacteria can make acid through fermenting.
Therefore, Bacteria that require a pH of 11 for growth will respond in the following manner: the bacteria must be under extremely basic circumstances; exposing it to highly acidic settings will disrupt its internal functions, finally killing it.
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After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. Which is the best explanation for what has occurred?
The runner's muscles have accumulated lactic acid.
The runner’s body has failed to perform cellular respiration.
The runner’s cells are relying completely on aerobic respiration.
The runner’s muscles have accumulated carbon dioxide.
Answer:
A
Explanation:
Just did the Unit Test
When the body is subjected to vigorous exercise, lactic acid tends to build up in the muscles, hence, the most probable explanation for the fatigue felt by the runner is the accumulation of lactic acid in the runner's muscle
When the body is subjected to vigorous exercise such as running several miles as performed by the subject in the question, lactic acid accumulates temporarily in the muscles. This temporary build up of lactic acid in the muscles causes feeling of fatigue or weakness as the body tends to become short of oxygen required to breakdown the glucose in the blood.Therefore, the runner most probably has accumulated lactic acid in his muscles.
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Which contains the largest group of organisms, the population, community or the ecosystem?
In what two ways is the krebs cycle important for making atp
Answer:
The krebs cycle produces two ATP and energy carrying molecules that are used to produce more ATP in the electron transport chain.
Explanation:
The kreb's cycle produces two ATP and energy carrying molecules that are used to produce more ATP in the electron transport chain.
What are the features of kreb's cycle?The citric acid cycle —also known as the Krebs cycle or the TCA cycle —is a series of chemical reactions to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
The Krebs cycle consumes pyruvate and produces three things: carbon dioxide, a small amount of ATP, and two kinds of reductant molecules called NADH and FADH. The CO2 produced by the Krebs cycle is the same CO2 that you exhale.
The tricarboxylic acid (TCA) cycle, also known as the Krebs or citric acid cycle, is the main source of energy for cells and an important part of aerobic respiration.
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Hormones in the bloodstream are what
Answer:
chemical messenger.
Explanation:
yw loves!!!!
Answer:
CHEMICAL MESSENGER
Explanation:
did the Assignment
A scientific observation is different from a inference. An inference involves a degree of probability that an scientific observation does not. Elaborate on this statement.
A) An inference is a statement that goes beyond what can be observed.
B) An inference provides the closest approach to certainty without actual observation.
C) An inference is a prediction based on new knowledge that you acquire from research.
Eliminate
D) An inference is the result of running one or more tests about what you believe to be true.
Answer:
C) An inference is a prediction based on new knowledge that you acquire from research.
Eliminate.
Explanation:
ikk..........
Answer:
A) An inference is a statement that goes beyond what can be observed
You do things to keep your body in balance every day. What things do you try to keep balanced in your everyday life?
Answer:
Stretches, Exercise, run 30 mins a day, eat healthy food like apples strawberries, drink water ,and sleep at the best time of the day around 9:30 or 10:26 pm
I go to the gym wake up like 7:30 a.m. drink water everyday, eat healthy like salad, fruit.. also walk for like 30 minutes. something really important always keep you mind saying you can do it because if you don't keep thinking about that you just going to be like I "never going to do this" "how much just i give up" No it's important the reminder you can do it
hope this help ;)
Which type of muscle tissue is both voluntary and striated? O smooth o cardiac skeletal heart
Answer:
Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.
Explanation:
The type of muscle tissue that is both voluntary and striated is the skeletal muscle.
What is a skeletal muscle?The skeletal muscle is the type of muscle that makes up about 40% of the total human body mass.They perform the following functions:
They are attached to the bones and allows movements,They help to maintain postureThey generate heat.These functions are possible because of the features of the skeletal muscle which is that they posses striations and they are voluntary.
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Which question can be answered by an experiment?
A)
Do sugar substitutes cause cancer?
B)
Did an ice age kill off the mastodons?
What caused the extinction of the dinosaurs?
D)
Are all people susceptible to the Hunta virus?
Answer:
a
Explanation:
Early Romans discovered that objects could be magnified through the construction and shaping of glass. For the past thousand years, this discovery has led to the construction and design of modern day microscopes. The development
Every object in the universe is made of cells.
Cells are made from atoms during chemical reactions.
⊝
All cells are identical.
⊝
All living things are made of cells
Please help meeeeee
Answer:
Try "all living things are made of cells". I'm really just guessing,but good luck!!!!!!
Compounds are the smallest unit of an element that occurs most commonly in nature.
Select the rewording of the statement that is true.
A.) Molecules are the smallest unit of an element or compound that commonly occur in nature.
B.) Atoms are the smallest unit of an element that commonly occur in nature.
C.) Molecules are the smallest unit of a compound that occurs on the periodic table.
D.) Compounds are the smallest unit of an element that occurs on the periodic table.
The answer is A.) Molecules are the smallest unit of an element or compound that commonly occur in nature.
The main focus of conservation is to
a. wisely manage natural resources for people's use
b. set aside land and protect it from human activities
c. demand government action to pass environmental laws
d. prevent wild species from becoming endangered
e. limit society's demand for natural resources
Answer:
A.) Wisely manage natural resources for people's use
Explanation:
Because conservation is like preservation but conservation wants to seek sustainable use of nature by humans for activities such as, hunting, logging, and even mining.
What do ribosomes do?
3. The table below lists three characteristics of an atom of an element. An
atom of which element is described by the data in the table? *
Characteristics of an Element
Number of
Protons
Number of
Neutrons
Number of
Valence Electrons
37
48
Answer:the answer is Rubidium
Explanation: quizzzzzlm app thing also my teacher told me. I got you fa
Atoms connected by covalent bonds share a ionic compounds. b pairs of electrons. c carbon and oxygen. d hydrogen ions.
Answer:
B
Explanation:
Atoms connected by covalent bonds share electrons. Therefore, the correct answer is option B.
Extremely high ionization energies prevent some elements from accepting electrons, and extremely low electron affinities prevent some elements from accepting them. These elements' atoms frequently share their electrons with those of other elements or with other atoms of the same element in order for both atoms to achieve stability by forming an octet configuration in their respective valence shells. Covalent bonds are those associations that involve sharing electron pairs between entities of different or similar kinds.
Therefore, a pair of electrons is shared between atoms connected by a covalent bond. The correct answer is option b i.e. pairs of electrons.
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Why do cultural universals exist?
Cultural universals exist because all cultures have basic needs and they all develop common features to ensure their needs are met.
What do you mean by cultural universals?A cultural universal is an element, pattern, trait, or institution that is common to all known human cultures worldwide. Taken together, the whole body of cultural universals is known as the human condition.
There are 10 basic elements of every culture: geography, language, family, FCTS (food, clothing, transport, shelter), economics, education, politics, technology, VBR (values, beliefs, rituals), and cultural expression.
Examples of elements that may be considered cultural universals are gender roles, the incest taboo, religious and healing ritual, mythology, marriage, language, art, dance, music, cooking, games, jokes, sports, birth and death.
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What does the term "monomer"
and "polymer" mean when discussing the
macromolecules?
Answer:
Polymer means many monomers. Sometimes polymers are also known as macromolecules or large-sized molecules. Usually, polymers are organic (but not necessarily). A monomer is a molecule that is able to bond in long chains.
Explanation:
Where does photosynthesis happen the fastest and the slowest?
Answer: It's basically fastest when white light hits and when yellow, red and green light hits it's at its lowest
Explanation: i hope this helped
GUYS THIS ENVIRONMENTAL STUDIES PLS HELP
IT'S REALLY IMPORTANT
PLS PLS HELP
Answer:
where is question ?
Explanation:
If we mixed sodium and iron
then the result will be?
Answer:
u can't mix them
two solid metals can't form solution.
Sodium hydroxide and iron when it reacts with water the result will be tetrahydroxoferrate
Where does mildew usually grow? Besides on clothes and wet/damp areas.
Answer:
Mildew thrives in damp, wet places like basements, attics and closed closets -- so strive to keep clothing as clean and dry as possible at all times. Clothing with grease or soiled spots encourages mildew growth, so don't leave dirty clothes on the floor or in the washing machine.
Explanation:
2. What element is the most important found in Biomolecules?
Answer: Carbon
Explanation: Most biomolecules are organic compounds, and just four elements—oxygen, carbon, hydrogen, and nitrogen—make up 96% of the human body's mass. But many other elements, such as the various biometals, are present in small amounts, but most importantly carbon is the most important element found in Biomolecules.
Please help me answer this as fast as possible!!!!!
Answer:
The answer is C
Explanation:
All living things are made up of cells!
Answer:
Cells are the basic unit of structure for each organism
Explanation:
Well, its simply because cells are the building blocks of life. EVERY organism is made up of cells.