Answer:
The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life comes from preexisting life.
Explanation:
your mom
what happens to the space inside the bell jar when the stretchy rubber is pulled down?
Answer:
The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases
Answer:
The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases.
This causes an increase in pressure within the bell jar, the air rushes out of the balloons causing them to deflate.
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Which organism obtains its energy exclusively from dead or decaying matter?
Answer:
Bacteria obtains energy from dead bodies of animals and plants.
QUE S T
b)
1
A supermarket chain advertises that its plastic carrier-
bags are 'environmentally friendly'. These bags are
made from polythene and contain added starch. A
student decided to find out if the claim is true. In the
investigation the student buried a piece of plastic from
the bag in a pot of soil and left it for one month. When
the plastic was dug up there were many small holes in
it.
The drawings show the plastic, as seen through a
microscope,
before and after being buried.
Starch
Hole
3
Plastic buried for 1 month
Plastic before being
buried
a) Explain, as fully as you can, the process that caused
the holes to appear in the plastic.
Answer:
The holes were formed from either.., bugs could have ate the starch and the polyethylene was not a deterrent?
It may be biodegradable because it is edible to bugs? I'm not sure that makes it completely biodegradable though.
https://www.livescience.com/58810-caterpillar-biodegrades-plastic-bags.html
copy and paste this link. Explains alot?
Match the seven major evolutionary trends in animal body organization to its definition. Body Symmetry Cellular organization Body segmentation Cephalization Digestive Tract Appendages Body Support System A. animal body shape, whether radial or bilateral symmetry B. a collection of cells or whether it has tissues, organs, and organ systems C. specialization of distinct body regions; repetitive units D. a concentrated sensory structure at the anterior end of the animal E. a single opening or two openings to take in food and/or eject waste F. legs, tentacles, antennae, and fins G. skeletons or hydrostatic structures
Answer:
The answer is below
Explanation:
Considering the seven major evolutionary trends in animal body organization against the available definition, here is the final answer to the question.
1. Body Symmetry - A. animal body shape, whether radial or bilateral symmetry
2. Cellular organization - B. a collection of cells or whether it has tissues, organs, and organ systems
3. Body segmentation - C. specialization of distinct body regions; repetitive units
4. Cephalization - D. a concentrated sensory structure at the anterior end of the animal
5. Digestive Tract - E. a single opening or two openings to take in food and/or eject waste
6. Appendages - F. legs, tentacles, antennae, and fins
7. Body Support System - G. skeletons or hydrostatic structures
Cell specialization is important during the growth and development of
a multicellular organism. This process is most directly regulated by
Answer:
Protein
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms.
Cell specialization is also referred to as cell differentiation and it can be defined as a biological process through which generic cells transform into specific cell types, so as to enable them perform certain functions within the body of a living organism.
Simply stated, it's the special function or job in the body of a living organism that are associated with cells.
Generally, cell specialization plays a significant role in the development of embryos.
Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Cell specialization is fundamental and key for the growth and development of a multicellular organism.
Furthermore, cell specialization as a process is most directly regulated by protein; one super regulating protein encourages cell differentiation while the other tries to stop or prevent the process. These proteins are referred to as master regulating proteins or Helix-Loop-Helix proteins.
When Dr. Philip tierno conducted his experiment on the pillows , he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family allergies?
Answer:
Yes. That was the question he was trying to answer.
Explanation:
To conduct the experiment investigating the connection between pillows and disease-causing gems, Dr. Philip needs to ask himself whether the pillows that will be used in the research contain germs that contribute to allergies in a family. This question allows Dr. Philip to have the basis to start his research and come to a conclusion about the pillows used in the research. Furthermore, the research points directly to the main point of the story.
Answer:When Dr. Philip Tierno conducted his experiment on the pillows, he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family’s allergies?
Explanation:Edmentum
Why are dogs color blind？
Answer:
It is caused by abnormalities in color-detecting molecules, known as cones, in the retina.
I hope this will help you
Multiple species of lizard feed on insects in the Caribbean islands. One
species of lizard lives on the ground, while another lives on tree branches.
Which statement is true of these two lizard species?
A. They have adapted to different niches due to competition.
B. They have adapted to different niches due to predation.
C. They have a mutualistic relationship with the insect species.
O D. They have the same niche: the Caribbean islands.
The two species of lizards have adapted to different niches to avoid competition. Therefore, option"A" is correct.
What is an ecological niche?
An ecological niche is the particular habitat of a particular species in an ecosystem. The term was coined by Joseph Grinnell in 1917. The selection of a niche depends on the environmental condition, to avoid competition and availability of the food. The different types of niches are spatial niches, tropical niches, and hypervolume niches.
Habitat is defined as the coexistence of abiotic and biotic things. Examples of habitats are the ocean and forests. A niche whereas is an inclusive space occupied by species in a habitat.
The ecological niche is occupied by a species of organism to avoid competition.
Learn more about an ecological niche, here:
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A large protein that passes through the nuclear pore must have an appropriate A)sorting sequence, which typically contains the positively charged amino acids lysine and arginine. B)sorting sequence, which typically contains the hydrophobic amino acids leucine and isoleucine. C)sequence to interact with the nuclear fibrils. D)Ran-interacting protein domain. Multiple Choice
Answer:
A)sorting sequence, which typically contains the positively charged amino acids lysine and arginine.
Explanation:
Protein sorting refers to the cellular process by which proteins are transported to their corresponding localizations both inside or outside the cell. A nuclear localization sequence (NLS) is a short amino acid signaling sequence that is able to mediate the transport of proteins into the nucleus. The proteins that are 'tagged' by an NLS sequence can pass through the nuclear envelope via nuclear pores. This sequence (NLS) is typically composed of protein motifs consisting of positively charged lysine (Lys) and arginine (Arg) amino acid residues, which are exposed on the protein surface. In consequence, the NLS sequence is recognized by the importin α/β heterodimer receptor, which transports the NLS-tagged protein into the nucleus. It has been shown that the deletion of the NLS sequence disrupts nuclear import, whereas the fusion of non-nuclear proteins with NLS sequences represents a useful strategy to introduce proteins into the nucleus.
Explain the adaptations for root hair cell
Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
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The Krebs cycle is a series of chemical reactions that: Group of answer choices Metabolize acetyl-CoA and produce ATP, carbon dioxide, and hydrogen ions Metabolize lactate and produces pyruvate, ATP, and hydrogen ions Metabolizes water and produces ATP and hydrogen ions Metabolizes alcohol and produces ATP and water in the mitochondria Breaks fatty acids into two-carbon molecules
Answer:
Metabolize acetyl-CoA and produce ATP, carbon dioxide, and hydrogen ions.
Explanation:
Cellular respiration can be defined as a series of metabolic reactions that typically occur in the cells of living organisms, so as to produce energy in the form of adenosine triphosphate (ATP).
During cellular respiration, high energy intermediates are created which are then oxidized to make adenosine triphosphate (ATP). Also, the high energy intermediary products are produced at the glycolysis and citric acid cycle stage.
Glycolysis can be defined as a biological process that uses the energy released and stored during the Krebs cycle to form adenosine triphosphate (ATP). Thus, glycolysis is a series of chemical reactions that is typically used to break glucose into pyruvic acid.
Krebs cycle is also referred to as the citric acid cycle (TCA cycle) and it can be defined as a series of enzyme-catalyzed reactions used to release stored energy in most living organisms by metabolizing (oxidation) acetyl-CoA which are typically derived from proteins, carbohydrates, and fats.
This ultimately implies that, the Krebs cycle is a series of chemical reactions that metabolize acetyl-CoA and produce adenosine triphosphate (ATP), carbon dioxide, and hydrogen ions.
Suppose D were dominant and d were recessive, and you could label the D allele in the P generation with a radioactive substance that could be inherited over several generations. You create hybrids by mating your radioactive DD individuals to dd individuals. Finally, you cross two F1 individuals (with the Dd genotype). In 1,000 offspring, how many would you predict would be radioactive?
Answer:
750 offspring
Explanation:
The correct answer would be 750 offspring.
The D allele has been labeled with radioactive substance.
If you cross Dd and Dd:
Dd x Dd
DD Dd Dd dd
3/4 of the resulting offspring would have, at least, the D allele.
Hence, out of 1000 offspring,
3/4 x 1000 = 750
750 would possess the radioactive label.
1. Identify Study the picture of the cockroach to the
right and identify some characteristics that
you could use to describe a cockroach
Answer:
you should use the head and the body to describe a cockroach
Explanation:
Skin Contact: In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.
Answer:
yes sir or maam because all types of skin can have germs
Explanation:
Answer: yes
Explanation: because all types of skin can have germs
what are the cells that pass from parents to their children
Answer:
Genes are the blueprint for our bodies. If a gene contains a change, it disrupts the gene message. Changes in genes can cause a wide range of conditions. Sometimes a changed gene is inherited, which means it is passed on from parent to child. Changes in genes can also occur spontaneously.
In what ways is a eukaryotic cell similar to a city?
Answer: In many ways, the eukaryotic cell is kind of like a city. I will tell you what each of the organelles in a cell does. Your job will be to try to match each of the cell parts to the parts of a city and explain why they are similar. a) Golgi Apparatus: packages up proteins and labels them for distribution to other parts of the cell.
Each one, like the organs inside your body, fulfills a particular function that is required for the cell to stay alive. Consider the cells to be a miniature city. Because they all do similar jobs, the organelles could represent companies, places, or parts of the city.
What is a cell?Cells are the fundamental building blocks of all life. Gazillions of cells make up the human body.
They support the body's structure, absorb nutrients from food, convert those nutrients into energy, and perform specialized functions.
Each one, like the organs in your body, performs a specific function that is required for the cell to survive. Think of the cells as a miniature city.
Because cell city has jobs that a plant cell does not, it represents an animal cell. In cell city, we believe that a waste disposal plant performs the same function as lysosomes, an organelle found only in animal cells.
Thus, this way, a eukaryotic cell similar to a city.
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Nitrogen is the most common element in the air. Why do bacteria play a role in the nitrogen cycle?
Explanation:
Bacteria play a role in the nitrogen cycle because:The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.
Answer:
sorry I didn't know hahaha
An amino acid analyzer is an instrument used to determine a. the sequence of amino acids in a polypeptide chain b. the presence of modified amino acids in a protein c. the identity of N-terminal and C-terminal amino acids in a protein d. the identities and relative amounts of amino acids in a protein
Answer:
d. the identities and relative amounts of amino acids in a protein
Explanation:
An amino acid analyzer is an automated machine that is used to determine the identities and quantities of amino acids in a given protein, peptide, and cellular samples. It makes use of the ion-exchange chromatography principle to determine the presence of amino acids. When the chromatogram is obtained, the relative amounts are then determined by the analyzer.
Since proteins are made of sequences of amino acids, the identities of proteins can also be obtained through this method. Ninhydrin, in the chromatographic column, reacts with the present amino acids under an ultra violet detector and is then observed at a wavelength of about 440 - 570nm.
what is/are the function(s) of the cell cycle?
Answer:
Yea it's DNA replication
Explanation:
From g00gle:
" The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle. "
“Red rust is one of the destructive diseases in tea plants which results adverse effect on tea yield. It is caused by a type of algae.” Which discipline of Biology is related to explain the above statement?
a) Mycology. b) Agronomy. c) Pathology. d) Phycology
Answer:
The correct answer is - c) Pathology.
Explanation:
Mycology is the branch of biology in which students study fungi and their characteristics including their biochemistry, taxonomy, and genetics.
Agronomy is the other branch of biology that deals with agriculture and its practices and work to improve the crops.
Phycology is the study of algae and their characteristics including their biochemistry, taxonomy, and genetics.
The disease and its causes are studied under the pathology branch o biology therefore, red rust would be studying in this discipline.
Biology B (CR) (ACC. Ed)(Dixon) / Principles of Evolution
3. How many total, non-unique alleles are there for each gene in a population of 250 humans?
A 125
B 1000
C 500
D 250
Answer:
C. 500
Explanation:
Each human has 2 alleles, which you do 250*2, getting 500
Which compound is known as end product of purine nucleotide metabolism? * Uric acid Carbonic acid Uronic acid Citric acid
Which of the following does not result in a cell with a new genetic
composition?
A.Conjugation
B.Transduction
C.Transformation
D.O Binary fission
Answer: D
Explanation:
Answer:
d. binary fission
Explanation:
a. direct contact transfer..so no
b. transfer by a virus...so no
c. transferred between microbial cells ... so no
d. asexual reproduction by a separation of the body into two new bodies ...so yes!
cara meneutralkan cuka dengan menggunakan larutan natrium hidroksida
A woman discovers that her family has a history of a rare, X-linked genetic disorder that causes symptoms late in life. Her mother and father didn’t have the disease, but all three of her brothers do. What is the probability that the woman will have the disease as well?
A. 100%
B. 75%
C. 50%
D. 25%
E. 0%
14). Clonal selection and differentiation of B cells activated by antigen exposure leads to the production of ________. A) large quantities of the antigen initially recognized B) vast numbers of B cells with random antigen-recognition receptors C) long-lived erythrocytes that can later secrete antibodies for the antigen D) short-lived plasma cells that secrete antibodies for the antigen
Answer:
The correct answer is D) short-lived plasma cells that secrete antibodies for the antigen
Explanation:
Each B lymphocyte has an antigen receptor (BCR: B cell receptor), a surface immunoglobulin (IgM or IgD), that binds to specific domains of the antigen called antigenic determinants or epitopes. Only B lymphocytes with a high antibody affinity for the antigen, and which are capable of processing and presenting it, will be positively selected. In this contact between the two cells, an exchange of chemical signals takes place that leads to the activation, clonal proliferation and differentiation of B cells into two sister subclones: one of antibody-secreting plasma cells, and the other of memory primed B cells. Therefore, only these last positively selected B lymphocytes will survive, proliferate and differentiate into plasma cells, synthesizing and secreting antibodies of a single isotypic class, with a unique specificity and high affinity, improving the ability to adhere to the antigen and, thus , neutralize and destroy pathogens.
Select the best description of amino acid metabolism: Group of answer choices Amino acid metabolism does not occur. Aerobic metabolism of amino acid requires deamination. Metabolism of amino acids is the primary source of energy during long-duration exercise. Metabolism of amino acids is the primary source of energy during short bursts of activity. Can reduce urea production from ammonia in the liver.
Answer:
Aerobic metabolism of amino acid requires deamination
Explanation:
Living system can be defined as the internal systems of organisms and how materials circulate within organisms.
Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, digestion, metabolism, etc.
Metabolism can be defined as a set of chemical processes carried out by a living organism such as humans, plants and animals, in order to sustain life.
Aerobic (oxygen-using) metabolism can be defined as a biological process that typically involves the extraction of energy from any carbohydrate source such as amino acids, fatty acids, etc.
Basically, an aerobic metabolism of amino acid is a process that requires deamination.
Generally, proteins comprises of amino acids and it is responsible for maintaining the proper functioning of the body system.
Transamination can be defined as a biochemical process which typically involves the removal of amino groups from amino acids and transferring them to a ketoacid (amino acid without an amine group), so as to form new amino acids.
Basically, transamination is a reversible oxidation-reduction reaction that is responsible for the deamination of amino acids.
Which of the following molecules contains three phosphate groups?
A. AMP
B. ADP
C. APP
D. ATP
Answer:
D) ATP contains three phosphate groups.
OAmalOHopeO
In terms of base nucleotides, explain the only difference between the DNA message for normal hemoglobin and the DNA message for sickle-cell hemoglobin.
Answer:
In the 1950s, Vernon Ingram demonstrated that the only structural difference between normal adult hemoglobin and sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain (Ingram, 1957; 1959).
its may help you ☺
llxXKHaNZaDaXxllPLZZ HELP
Phosphorus is mainly found in the environment stored in
A. the atmosphere
OB. legumes
C. mineral deposits
D. denitrifying bacteria
Answers: I think it’s a or c
Explanation:
