Answer:
The property that could indicate that the particle is a virus is an absence of cellular machinery (option B). Explanation: Viruses are particles that are not considered to be living organisms, which is due to a complete absence of organelles or cellular functions.
Explanation:
Why would a rough, steep mountain habitat have a higher rate of speciation
than a large, open grasslands habitat?
A. The mountain has less variety in the environment.
B. The mountain would cause less fragmentation.
C. The mountain has wider range of environments.
D. The mountain has more resources.
Answer:
C. The mountain has wider range of environments.
Explanation:
Steep mountain habitat have a higher rate of speciation than a large, open grasslands habitat The mountain has wider range of environments.
What is Grassland habitat?There are various locations and climates on earth where grassland environments can be found. Depending on where in the world they are and the type of climate there, they may also be referred to as prairies, savannahs, steppes, or pampas.
Because there are few places for animals to hide from predators in grasslands, they have developed underground burrows or grown tall enough to look over thick grasses and shrubs.
Many grasslands have been used for farming because they are suitable for raising crops and providing food for cattle. Yet, this means that grassland animals can no longer reside there.
Therefore, Steep mountain habitat have a higher rate of speciation than a large, open grasslands habitat The mountain has wider range of environments.
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A cell goes through mitosis every 30 minutes. How many cells will there be after 3.5 hours?
Answer: 7
Explanation:
3.5 = 210 minutes
210 / 30 = 7
Which statement is true for all prokaryotic and eukaryotic organisms?
A. All organisms make proteins using instructions from their genetic material.
B. All organisms use other organisms as their primary source of energy.
C. All organisms perform cellular respiration using their mitochondria.
D. All organisms reproduce through the combining of sex cells.
Answer:
The answer is A.
Explanation:
According to the cell theory, all living organisms are made of cells. ... They all carry genetic instructions, in the form of DNA, that they can pass on to their cellular descendants during cellular reproduction.
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Research a article on how climate change effects polar bears. 7-10 sentences. And don’t use any articles that are .com and attach your article link:)
Answer: https://www.wwf.org.uk/learn/wildlife/polar-bears#:~:text=Challenges%20affecting%20polar%20bears&text=The%20Arctic%20is%20warming%20about,ice%20to%20raise%20their%20young.
https://www.carbonbrief.org/polar-bears-and-climate-change-what-does-the-science-say
Explanation:
Why does the bronchioles get smaller and smaller before they reach the alveoli?
Answer: Parasympathetic stimulation causes bronchoconstriction while sympathetic stimulation causes bronchodilation. During an asthma attack, the muscles that encircle the airway tighten or constrict, limiting the flow of air to and from the lungs.
Explanation: i hope this answers your question and i have a awesome marvelous day.
Answer:
In your lungs, the main airways (bronchi) branch off into smaller and smaller passageways -the smallest, called bronchioles lead to tiny air sacs (alveoli)
the bronchiole end in tiny air sacs called alveoli, where oxygen is transferred from the inhaled air to the blood, after absorbing oxygen, the blood leaves the lungs and is carried to the heart, the blood then is pumped through your body to provide oxygen to the cells of your tissues and organs.
Mark all that apply. What evidence is used to classify living things into groups.
A) cell type
B) habitat
C) how organism obtains food and energy
D) common ancestry
E) DNA
Answer:
D.
Explanation:
Taxonomy is a branch of biology centered around classifying animals into living groups. This is done based on the differences and similarities between animals. Taxa in the Linnaean system include kingdom, phylum, class, order, family, genus, and species. Between these relations it all stems from common ancestry. Which is what can relate species to others. Hope this helps!!
Answer:
your answer would be D
Explanation:
cause I big brain
If the amino acids glycine, alanine and valine were combined in one molecule, what would the molecule be called?
Answer:
A tripeptide
Explanation:
Alanine (Ala), Glycine (Gly) and Valine (Val) are amino acids, i.e., organic molecules that contain at least an amino (–NH2) and one carboxyl (–COOH) functional group. The amino acids held together by peptide bonds, which are formed by a carboxyl group of one amino acid and an amino group of another one, in order to form a peptide. Thus, a tripeptide is a peptide composed of three amino acids joined by two internal (and sometimes three) peptide bonds. In the case above described, the tripeptide formed by the binding of Glycine, Alanine, and Valine can be abbreviated as Gly-Ala-Val (i.e., in this order).
A. The capture/mark recapture method was used to give an accurate
estimate of the rhinoceros beetle population in the Western province. Traps
were set up and captured beetles were painted light brown as oppose to red an
yellow. All captured-recaptured were counted and recorded.
Total count
in
Total marked
Total counts
in
Total marked
40
40
15
35
Use the Lincoln Index to calculate the total beetle population?
A skin cell has just divided. In which order will its daughter cells undergo the next steps of the cell cycle?
A. Separation of cell contents➡️separation of chromosomes➡️cell growth and DNA replication
B. Cell growth and DNA replication➡️ Separation of cell contents➡️ separation of chromosomes
C. separation of chromosomes➡️ Cell growth and DNA replication➡️ separation of cell contents
D. Cell growth and DNA replication➡️ separation of chromosomes➡️ separation of cell contents
Answer:
madre mía el bicho and is B
Which of the following statements is true?
Earth's atmosphere helps it maintain a constant temperature.
Condensation is the process by which water changes from a liquid into a gas.
Plants do not perform respiration.
Animals add water to the atmosphere through photosynthesis.
Earth's atmosphere helps maintain a constant temperature.
Answer:
hello there your answer is A:Earth's atmosphere helps it maintain a constant temperature.
Explanation:
please mark other guy as brainllest.
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PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
Answer:
a.
Explanation: i had this in a social studies test before its a
Answer:
IN my opinion, it should be B
Explanation:
which organisms transform nitrogen to a form that useful to plants
Answer:
nitrogen-fixing bacteria
Answer: A
Explanation:
Name two types of proteins that regulate the cell cycle.How do these proteins work?
Answer:
Internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur. External regulators speed up or slow down the cell cycle.
Explanation:
Internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur while external regulators speed up or slow down the cell cycle.
What are Proteins?Proteins are large and complex molecules which play many critical roles in the body. Proteins do the work in cells which are required for the structure, function, and regulation of the body's tissues and organs.
Proteins are made up of many smaller units called amino acids, which are linked together in long chains. There are 20 different types of amino acids that can be linked to make a protein.
The sequence of amino acids determines each protein's unique 3-dimensional structure and its specific function. Amino acids are coded for by a combination of three DNA building blocks (nucleotides), which are determined by the sequence of genes.
Thus, internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur while external regulators speed up or slow down the cell cycle.
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Which of the following best describes how the RNA sequence specifies the production of an amino acid chain?
A.
Each individual RNA base codes for three amino acids.
B.
Each group of three RNA bases codes for an enzyme that connects amino acids.
C.
Each individual RNA base codes for a ribosome location where amino acids are assembled.
D.
Each group of three RNA bases codes for a specific amino acid.
Answer:
The answer is B Each group of three RNA bases codes for an enzyme that connects amino acids.
Which of the following describes a way that protists differ from animals and plants? Group of answer choices
A.Different species of protists do not differ greatly from one another.
B.Protists are typically much larger than most plants and animals
C.Protists resemble neither plants nor animals.
D.Protists resemble neither plants nor animals.
Answer:
A. Different species of protists do not differ greatly from one another
one of these is wrong but I don’t know which one can someone please help me
Question 20 of 34
Which situation shows a nonrenewable resource in use?
A. Solar energy reaches Earth's surface.
B. Sunflowers grow from sunflower seeds.
O c. Computer chips are made from silicon.
D. Lobsters are caught off the coast of Maine.
Answer:
c. Computer chips are made from silicon.
Explanation:
Non-renewable resources are natural substances that cannot be easily replenished when used. Examples are natural gas, coal, oil, nuclear energy, etc. Silicon is made when Silica is heated with carbon after which the product is reacted with hydrocarbons to polymerize them. Since the hydrocarbons are made from oil and natural gas, the resulting product is non-renewable.
Chips made from silicon are not biodegradable because to reuse them, they must be sent to companies that have specialty in renewing them.
The reactions of glycolysis that are shared with those in gluconeogenesis (ie use the same enzymes) are those that: Are substrate level phosphorylations Are irreversible. Are regulated steps. Operate close to equilibrium. g
Answer:
The reactions of glycolysis that are shared with those in gluconeogenesis (ie use the same enzymes) are those that Are regulated steps.
Explanation:
Glycolisis and gluconeogenesis are two mechanisms related to the carbohydrates metabolism. Sometimes they are considered reverse processes. However, they are different because of the control points they have where reactions are irreversible.
Glycolisis and gluconeogenesis share 7 common reactions, that are reversible. Thses reactions are coordinated and regulated by F-2 and 6-BP as the answer to the hormonal action.
Glycolisis happens in the muscle, while Gluconeogenesis happens in the liver. Together they form the "Cori Cycle".
Mutations that change the bases in a base pair are ____________.
Answer:
A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
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Does anyone know how to do Punnet squares?
Use the Punnet square to answer the question
1. Write the phenotypes of the three genotypes shown above.
TT _______
tt _______
YT _______
Answer:
homzygous homzygous heterozygous
Explanation:
What does photosynthesis produce?
Answer: cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen
Explanation:
i hope this help
Cancer is a disease of the cell cycle. Which of the following is NOT true of cancer cells? Cancer cells engage in uncontrolled cell division. Cancer cells ignore signals that should cause them to stop dividing Cancer cells exit the cell cycle (stop dividing) when abnormal cellular activity is deteced.
Answer:
Cancer cells exit the cell cycle (stop dividing) when abnormal cellular activitiy is detected is your answer.
Explanation:
This is the answer because cancer cells are what cause tumors which are basically when cells are dividing uncontrollably. Cancer cells never ever exit cell cycle they are always repeating it causing abnormal production of cancer cells so the last answer cancer cells exit the cell cycle is false making it the answer for this question.
The angle of the Earths axis keeps changing as the planet revolves around the Sun
True or False
Please select the word from the list that best fits the definition
States that buoyant force = weight of the fluid displaced
Answer:
Archimedes Principle is the word that best fits the definition.
hope this helps you ☺️☺️
3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False
Answer:
True
Explanation:
PLZ HELP ASAP Maria pushes a ball, and the ball rolls across the table. She wants to make the ball roll faster. Maria needs to push the ball A. with more strength. B. on a different table. C. on the other side of the table. D. with less strength.
Can you answer what’s on this worksheet?
The exchange of gases and other materials between cells in the body and cells in the blood
occurs in...
A. stomach
B. capillaries
C. arteries
D. veins
In the late 1980s and early 1990s, the percentage of Icelandic children whose bacterial infections were caused by bacteria resistant to penicillin rose at an alarming rate. After public health officials initiated a campaign to reduce the use of penicillin, resistance dropped off. This observation is consistent with the hypothesis that ________.
Answer:
The correct answer would be - "bacterial populations evolve in response to the selection pressure imposed by antibiotics".
Explanation:
The given information provided in the question about the bacterial infection supports the hypothesis that the bacterial population shows the evolution in response to the selection pressure caused by the antibiotics due to the fact that bacteria increased resistance gradually with time. This resistance towards antibiotics increased the percentage of bacterially infected children in the late 1980s and early 1990s.
In this case, the population of bacteria having resistance genes is selected to evolved selected to increase their offsprings.
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Which of the following mutations could lead to constitutive expression of the genes of the lac operon? A mutation in the lac-Z gene A mutation in the lac-Y gene A mutation in the operator sequence A super repressor mutation Submit Part B Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used. Submit Part C The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. View Available Hint(s) The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. True False
Options for part A are as follows:
A) A mutation in the operator sequence
B) A mutation in the lac-Z gene
C) A mutation in the lac-Y gene
D) A super repressor mutation
Answer:
The correct answer:
Part a - A mutation in the operator sequence
Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part C. true.
Explanation:
part a:
If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.
part b:
The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part c:
RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.