What does the Cell Wall do?
The control center of the cell where DNA is located
These give the Endoplasmic reticulum a "rough" look, they are responsible for making proteins.
Gives the cell structure and support. Only found in plant cells.
The powerhouse of the cell. Provides energy in the form of ATP.
Answer:
the cell wall is a protective layer that keeps things in or out.
nucleus
true
true
mitochondria
Explanation:
what scientist concluded that all animals aremade of cells
Answer:
Theodor Schwann and Matthias Jakob Schleiden
Explanation: in 1839 the two elucidated that all plants and animals were made up of cells
What are the 4 nitrogen bases in a DNA nucleotide, and how to they pair together?
Answer:
Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guani
A population includes only one species.
True
False
Answer:
The answer is True
Explanation:
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Stomach acid has a pH of about _____. a. 4 c. 6 b. 2 d. 10
pyruvic acid enters the ____ and is first converted into _____.
a. krebs cycle; citric acid
b. krebs cycle; acetyl CoA
c. mitochondria; citric acid
d. mitochondria; acetyl CoA
Answer :
D. Mitochondria ; acetyl CoA
pyruvic acid enters the mitochondria and is first converted into acetyl CoA
What shape represents the phosphate in a nucleotide?
Answer:
Each nucleotide is made up of a nitrogenous base, a pentose sugar, and a phosphate. The remainder of the molecule forms the pentose sugar.
Explanation:
What organisms carry out metabolism?
Answer:
Eukaryotes
Explanation:
Are organisms wise cells have a nucleus and membrane bound organelles. Prokaryotes are organisms whose cells lack a nucleus. Eukaryotes carry out cellular respiration with the help of mitochondria. Mitochondria are organelles that produce the enzymes necessary to catalyze the series of reactions that produce ATP.
Water found in a pond is ...
A - Salt Water
B - Fresh Water
Answer:
fresh
Explanation:
Which of the following human activities releases greenhouse gases and contributes to climate change?
Answer:Carbon Dioxide is released by the burningof fossil fuels, solid waste, and wood. This is the number one human activity that contributes to climate change
Explanation:
please help if you can!
need to enter three words for the word bank that matches for mutation types ^^
Answer: I can help
Explanation:
InsertionsubstitutiondeletionInvestigating how temperature affects decay
Answer:
How does temperature affect decay?
Temperature. amount of water. Bacteria and fungi secrete enzymes onto food to digest it into soluble substances which they absorb. They respire using oxygen and release heat energy which increases the rate of decay.
Explanation:
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Kevin is constructing an explanation of the importance of freshwater ecosystems. Which of these statements would be MOST USEFUL to include in the explanation?
Evidence that a meteor passed through to the surface of a moon or planet would be
A) a fiery streak in the sky
B.) impact crater
C.) meteorite pieces found on planet's surface
D.) both b and c
Answer:
D
Explanation:
Which of the following statements tells how facilitated diffusion differs from
simple diffusion?
A. Particles move through cell membranes without the use of energy by cells.
B. Particles tend to move from high concentration to lower concentration.
C. Particles move within channel proteins that pass through cell membranes.
D. Particles tend to move more slowly than they would be expected to move.
Answer:
I think its C but I am not sure, I hope this helps :)
Explanation:
The statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
Diffusion (both facilitated diffusion and simple diffusion) refers to the movement of substances across biological membranes from an area of high concentration to an area of low concentration.
Facilitated diffusion and simple diffusion are two types of passive transport that do not require energy to move molecules/ions in favor of a concentration gradient.
In facilitated diffusion, specific membrane proteins known as carriers or channels help to the movement of substances in favor of a concentration gradient.
Conversely, in simple diffusion, small molecules (e.g. CO2 and oxygen) freely diffuse across a selectively permeable membrane in favor of a concentration gradient.
In conclusion, the statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
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True or false, Water contains half as many hydrogen atoms as oxygen atoms.
Answer:true
Water is made up of 2 atoms of hydrogens and 1 atom of oxygen to form a molecule. Water contains half as many hydrogen atoms as oxygen atoms. Water is a polar molecule which means it has slightly charged ends. ... This means it bonds to like molecules and ionic molecules.
Explanation:
Stoichiometry must be multiplied by the number that is printed on the element's foot in order to determine how many atoms of a certain element there are in a given molecule. Therefore, the given statement is false.
What is atom?The smallest component of any element, molecule, or compound is called an atom. Atoms have a central nucleus and electrons that move in a set orbit around it.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. Overall, only the proton—not the neutron—is responsible for the nucleus' charge.
Two hydrogen atoms and one oxygen atom combine to produce the molecule of water. Hydrogen atoms make up 50% of the oxygen atoms in water.
Therefore, the given statement is false.
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Cellular respiration and photosynthesis form the basis of the __________.
Group of answer choices
A) water cycle
B) biomass
C) nitrogen cycle
D) carbon cycle
Define and give examples of greenhouse gases
Answer:
a gas that absorbs infrared radiation and radiates heat in all directions. EX) water vapor, carbon dioxide, methane, and ozone
The primary gases that cause the greenhouse effect are fluorinated gases (also known as "greenhouse gases"), water vapor, carbon dioxide, methane, nitrous oxide, and nitrous oxide (all of which are naturally occurring).
What is the effect of greenhouse gases?The so-called greenhouse effect is a result of these, low amounts of the three most well-known greenhouse gases carbon dioxide (CO₂), methane, and nitrous oxide occurring naturally in the atmosphere. Greenhouse gases on Earth trap heat in the atmosphere, warming the whole globe.
Because it is one of the gases in the atmosphere that causes the greenhouse effect, which causes the Earth to warm, carbon dioxide is known as a greenhouse gas.
Therefore, gases in the atmosphere known as greenhouse gases have an impact on the energy balance of the planet.
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What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Describe the following types of cell signaling:
Autocrine:
Juxtacrine:
Endocrine:
Paracrine:
Answer:
Autocrine:Autocrine signaling means the production and secretion of an extracellular mediator by a cell followed by the binding of that mediator to receptors on the same cell to initiate signal transduction. A well-characterized form of autocrine signaling is the secretion of IL-1 by macrophages.
Juxtacrine:In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell–cell or cell–extracellular matrix signalling in multicellular organisms that requires close contact. ... A membrane ligand (protein, oligosaccharide, lipid) and a membrane protein of two adjacent cells interact.
Endocrine:The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
Paracrine:Paracrine signaling is a form of cell signaling or cell-to-cell communication in which a cell produces a signal to induce changes in nearby cells, altering the behaviour of those cells. ... However, the exact distance that paracrine factors can travel is not certain.
Explanation:
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pls help 25 points Select the correct location on the image. Identify the subsystem of Earth that takes the longest amount of time to change, based on the geologic time scale.
Answer:
bottom one, the dot located on the orange-colored rock
Explanation:
28. The phases for Meiosis II are:
what is science? why is science useful?
Answer:
Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards. Finding a cure for cancer and a clean form of energy are just two topical examples. Education could become the most important application of science in the next decades.
Answer:
science is the study of earth and nature. science is useful because science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards.
You get a cut on your finger and some bacteria enter. Your immune system cells kill off the invaders by ingesting them. This is an example of:
All members of a species that live in the same area at the same time make up alan)
How many moles are in 15 grams of Lithium?
2.16 grams
104.1 moles
2.16 moles
104.1 grams
Why are individual chromosomes more difficult to see during interphase than during mitosis
sex linked traits are typically carried on the x chromosome. to denote the geontypes, a superscript is used. a female carrier of hemophillia will have the genotype xH Xh . using the letters X AND Y , what is the genotype for each of the following people?
Answer: XHY, XHXh
Explanation: I don't know if this is correct exactly but i just looked at my notes from my bio class because we did this previously so i think it's right
Which statement correctly comppares the “Analysis” and conclusion” section of a lab report?
Answer:
the "Analysis" and "Conclusion" sections of a lab report? Only the “Conclusion” section describes errors that occurred during the experiment, and only the “Analysis” section suggests further research.
Explanation:
the "Analysis" and "Conclusion" sections of a lab report? Only the “Conclusion” section describes errors that occurred during the experiment, and only the “Analysis” section suggests further research.
i hope i helped <3 <3<3<3<3<3<3Answer:
An analysis is when youre examining, the conclusion is when you have come up with an explanation or an answer to your experiment, when you come to the end of the experiment.
I hope this helps!!!
Explanation:
HELPP ASAP PLEASE I NEED ANSWERS GIVE A LOT OF POINTS (answer all plzzzz) 11-15
Answer:
11.) red aka b
12.)orange aka a
13.)yellow aka c
14.) orange aka b
15.) last one aka c
Explanation:
11.) F=ma---> 75=0.445(a)--->a=168.5m/s^2
12.)F=ma---> 5,100=m(3)---->m=1,700kg
13.)F=ma---> 3.63=18.15(a)--->a=0.2m/s^2
14.)F=ma---->F=(2,030,000)(15)----->F=30,450,000n
15.) Doubling the mass doubles the acceleration