Which part of the cell does this illustration represent?
The right answer is Mitochondria.
Mitochondria are limited by two membranes with very different properties:
* The outer membrane is low in protein and contains a transmembrane protein, porin, which allows the passage of ions and water-soluble metabolites of molar mass <10,000 Da.
* In contrast, the inner membrane is very rich in proteins but it is almost impermeable to ions and water-soluble metabolites. These substances can only cross the membrane using transport membrane proteins (ATP, ADP and Pi are transported by this type of protein) or by more sophisticated mechanisms called shuttle.
* The space between these two membranes is called the intermembrane space.
what 3 ways do science influence society
Leaves with carotenoid pigment turn _________ during the fall.
a. red and green
b. yellow and orange
c. green
d. brown and yellow
Siberian Huskies have two layers of fur. The outside layer is rough and coarse, while the inner layer is very dense and thick. Which theme of biology describes this phenomenon?
Evolution explains unity and diversity through adaptation.
Structure and function are related in biology.
Organisms must maintain homeostasis.
All of the above are correct.
Answer: All of the above are correct.
Explanation:
The siberian huskies live in a cold environment. This is because of the fact that they are adapted to have a two layered fur so as to maintain their homeostasis and adapt to the cold environment. This is the basis for the evolution of these huskies. Thus it can be said that the structure and function in the biology are related. The two layered fur will help in retaining the heat.
Jack observes the development of frog eggs. During his observations, he noticed that within a few hours of fertilization, the single-celled zygote went through a series of cell divisions. Which of these is the best interpretation?
A. gastrulation
B. blastulation
C. cleavage
Which of the following statements is true about scientific theories?
A. Scientific theories become scientific laws.
B. Scientific theories are never proven.
C. Scientific theories become hypotheses.
D. Scientific theories summarize patterns found in nature
Answer: D. Scientific theories summarize patterns found in nature.
A scientific theory is a model that explains the facts about nature on the basis of observations, experimentation and reasoning. A scientific theory can be proved by scientific methods involving procedures, measurements, observations and evaluation of results. Therefore, a scientific theory validate the facts of nature and summerizes patterns found in nature.
Which choice best describes the end product meiosis?
A. produces 2 identical daughter cells
B. produces 4 identical daughter cells
C. produces 2 genetically different daughter cells
D. produces 4 genetically different daughter cells
You are looking at four tall pea plants. What are their phenotypes and genotypes, respectively?
tall; Tt or TT
short; tt
Tt or TT; tall
tt; Short
There is no difference between the question and hypothesis steps of scientific inquiry. Please select the best answer from the choices provided T F
Correct answer: False
The question provides the question that is to be studied while the hypothesis gives a proposed answer to the question. The research question deals with the qualitative analysis which is based on the data collection and its analysis while the hypothesis deals with the quantitative analysis.
A research question is a hypothesis that is asked in the form of the question while the hypothesis is always declarative sentence and it relates general or specific variables.
Hence, the correct answer would be ''False''
Purebred dogs are first assigned the same litter number until they are individually registered with a name. Then the dogs will be assigned a unique registration number with a dog registry. Many people choose to have a microchip implanted in the dog so that it can be read to immediately find the dog's owner.
Which of the following relations is not a function?
A. (registration number, litter number)
B. (microchip number, registration number)
C. (litter number, microchip number)
D. (microchip number, litter number)
Answer:
it's C
Explanation:
Which statements are true of a white dwarf?
A) It has a red shell.
B) It is the result of the core collapse of a low-mass star that sheds its outer layers.
C) It emits massive amounts of light compared with other stars.
D) It strongly attracts all matter or energy that comes near it.
E) It cools down to become a black dwarf.
When evaluating a source, which of the following is the most important thing you should ask yourself?
Where and when was the research published?
Answer:
c
Explanation: i got it right
How does "shotgun" DNA sequencing work? ...?
How can the carbon in sediments reach the atmosphere?
A.decomposition, fossil fuel formation, fossil fuel emissions
B.decomposition, diffusion, evaporation
C.cellular respiration, diffusion, transpiration
D.photosynthesis, organic carbon, cellular respiration
...?
Answer: A. decomposition, fossil fuel formation, fossil fuel emission.
Decomposition is the process of degradation and decaying the plant and animal waste below the earth's sediments. This buried matter remain beneath the earth surface for million's of years as a result of this fossil fuels are produced. With the use of fossil fuels by human activity resulted in emission of fossil fuels in the earth atmosphere.
The processes that release carbon sediments in the atmosphere are decomposition, fossil fuel formation, fossil fuel emissions; option A.
What are the processes that release carbon sediments in the atmosphere?Carbon sediments can be released into the atmosphere through the following processes:
Decomposition: this is when molecules containing carbon decompose and release carbon into the atmosphere fossil fuel formation: during the process of formation of fossil fuels, carbon molecules are released into the atmosphere fossil fuel emission: when fossil fuels are burnt, they release carbon sediments in the atmosphere.Therefore, the processes that release carbon sediments in the atmosphere are decomposition, fossil fuel formation, fossil fuel emissions; option A.
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which process results in the production of ammonium?
What is the angle supplementary to the angle measuring 165°?
Final answer:
The angle supplementary to an angle measuring 165° is 15°.
Explanation:
The angle supplementary to an angle measuring 165° is the angle that, when added to 165°, will result in a sum of 180°. Since supplementary angles add up to 180°, we can subtract 165° from 180° to find the measure of the supplementary angle.
180° - 165° = 15°.
Therefore, the angle supplementary to the angle measuring 165° is 15°.
Which of the following statements about the environmental movement is true?
a.
It incorporates the conservation movement.
b.
It is a purely social movement.
c.
It does not include the green movement.
d.
It seeks to address predominantly social issues.
Answer:
a
Explanation:
In general, the frequency with which crossing over occurs between two linked genes depends on what?
A. how far apart they are on the chromosome
B. the phase of meiosis in which the crossing over occurs
C. the characters the genes code for
D. whether the genes are on the X or some other chromosome
E. whether the genes are dominant or recessive
Minerals come from organic materials.
true or false
The answer would be false because minerals are inorganic meaning they occur naturally and are non living
you suspect that a chemical that you are testing in the lab is strongly acidic . what might be its ph
A chemical that is strongly acidic would likely have a pH close to 1-2. The pH scale, which measures from 0 (most acidic) to 14 (most basic), denotes acids with a pH lower than 7. Strong acids, like stomach acid, significantly change the pH of a solution rapidly due to high hydrogen ion production.
If you suspect that a chemical you are testing in the lab is strongly acidic, its pH would likely be very low. The pH scale is an inverse logarithmic scale ranging from 0 to 14 and measures the acidity or basicity of a solution. Strong acids can have pH values from about 1 to just below 7. However, extremely strong acids can even possess negative pH values. Examples include stomach acid, which has an acidic pH of 1-2, indicating a high level of acidity.
To give you context with examples, consider the following substances:
Human blood, with a pH of 7.4, is slightly basic and is considered neutral.Household ammonia has a pH of 11.0 and is a basic substance.Cherries, with a pH of 3.6, are acidic.If you were testing a chemical with a strongly acidic nature, such as stomach acid, you could expect a pH close to 1-2, comparable to the highly active chemical nature of strong acids.
What do archaeologists believe was the function of signature seals?
A.
They were payment for sending clay tablets to distant villages.
B.
They indicated ownership of bags of grain or cotton.
C.
Tax officials used them as receipts for payment of taxes.
D.
They served as the centerpiece of ornamental clay platters.
The right option is; C. Tax officials used them as receipts for payment of taxes.
Archaeologists believed that tax officials used signature seals as receipts for payment of taxes.
Signature seals are stamps which creates an impression on a piece of paper such as letters, contracts, official paperwork, important documents or arts. Seals are composed of two elements which are; a die that has an inverted image of the seal, and another die which is usually an ink. Different seals are used for many purposes. Signature seals can be used as company seals, or to seal letters that contains private or confidential information.
What list describes the diet of an omnivore?
a. mice and rabbits
b. fish and insects
c. fish and berries
d. rabbits and insects ...?
The right option is; c. fish and berries
Omnivores are animals that obtain their energy and nutrients by feeding on both plants (like herbivore) and animals (like a carnivore). Diets of omnivores include both plant foods such as fruits, vegetables, grains, and animal foods (meats, fishes, insects). Examples of omnivores are humans, bear, pig, chimpanzee and rodents.
Climate is described as what
The downward force acting on an object in free fall is the force of ____________________.
Your eye color, sex, and hair color are all determined by the DNA in your genes. Where are these genes located?
A) proteins
B) centrioles
C) chromosomes
D) red blood cells
Answer: The correct answer is C) Chromosomes.
Genes can be defined as the segments of DNA ( deoxyribonucleic acid) that code for a particular protein. The protein formed corresponds to a particular trait of the organism. ( like eye color, hair color).
Genes are located on the chromosomes ( thread like structures that are made up of DNA).
Thus, option C) is the right answer.
What type of vegetation would you expect to find on newly formed volcanic islands?
The type of vegetation that would you expect to find on newly formed volcanic islands is the abundance of lichens.
What do you mean by Vegetation?Vegetation may be defined as a process that significantly involves the collection of plant species and the ground cover they provide. These plants are togetherly found in a particular area or habitat.
Lichen belongs to the family of pioneer species that first colonize in barren soil. There is a lack of nutrients on newly formed volcanic islands still, but lichens are able to adapt themselves by secreting some chemicals in the infertile or barren soil and making it somehow nutrient rich.
Therefore, the type of vegetation that would you expect to find on newly formed volcanic islands is the abundance of lichens.
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The solubility of a solute is the largest amount of solute that can dissolve in a certain quantity of __________.
solute
liquid
solvent
solution
In a chemical reaction, products must equal __________.
elements
molecules
reactants
atoms
1. The right answer is Solvent
The term "solution" would not be applicable here because it designates the solute + the solvent ".
In chemistry we prefer to use the term solvent rather than liquid.
The solubility of a compound can be defined as follows: a maximum amount (g or mole) of solute dissolved in 1 liter of saturated solution according to precise conditions of temperature, nature of the solvent and the solute.
2. The right answer is Reactant.
During a chemical transformation the atoms of the reagents combine in different ways to form the products but no atom disappears or does not appear so the total mass does not change.
During a chemical transformation, the total mass of the disappeared reagents is equal to the total mass of products formed.
Answer:
#1 - The answer would be Solvent
#2 - The answer would be Reactants
watson and crick figured out what process
Final answer:
Watson and Crick figured out the structure of DNA by deducing its double-helix structure using data from Rosalind Franklin's X-ray crystallography experiments.
Explanation:
Watson and Crick figured out the structure of DNA. In the 1950s, they worked together at the University of Cambridge and used data from scientist Rosalind Franklin's X-ray crystallography experiments to deduce the double-helix structure of DNA. This breakthrough discovery earned them the Nobel Prize in Medicine in 1962.
Which would give the best biochemical evidence of evolution?
A .lipids
B. proteins
C. nucleic acids
D. carbohydrates
Nucleic acid give the best biochemical evidence of evolution. Thus option C is correct.
What is nucleic acid?Nucleic acids are the main information-carrying molecules of the cell, and, by directing the process of protein synthesis, they determine the inherited characteristics of every living thing.
Nucleic acids are the most important macromolecules for the continuity of life. They carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.
The more similar their DNA is, the more similar their proteins will be and the more closely related the organisms are likely to be. Thus, scientists use biochemical evidence to establish how organisms have evolved.so, option C is correct.
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Most of today’s environmental problems began during which period(s) in human history?