Answer:
In animal field studies, why do scientists usually try to work without making the animals aware that the humans are present? It is necessary to observe the animals without disturbing them. When a controlled experiment is not possible, why do scientists try to identify as many relevant variables as possible?
Describe the Nebular Hypothesis Theory
Explanation:
The solar nebular hypothesis describes the formation of our solar system from a nebula cloud made from a collection of dust and gas. The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planetsWhich type of cells has a chloroplast?
Answer:
plant cell
Explanation:
Animal cells do not photosynthesize (with the exception of one animal but biology is INCREDIBLY diverse and creative.)
Diversity of life on earth is included in which central and unifying theme of biology?
Answer:
Evolution
Evolution is considered a unifying theory of biology. It explains the unity and diversity of life.
What biological macromolecule is made up of monomers like the one shown below?
A molecule with an amino group, carboxylic acid, hydrogen atom, and R group bonded to a central carbon atom.
Lipid
Nucleic acid
Protein
Carbohydrate
Answer:
Protein.
Explanation:
Proteins consist of an R group/carboxylic acid unlike any of these. Look at this image- hope it helps
Answer:
protein
Explanation:
For the following biomolecular interactions, choose the main weak force interactions that mediates them.
Interaction between hydrophobic (nonpolar) amino acid side chains van der Waals interaction
Repulsion between negatively charged backbone of DNA double helix van der Waals interaction
Interaction between water and carbonyl oxygen of guanine hydrogen bond
Answer:
Interaction between hydrophobic (nonpolar) amino acid side chains is due to hydrophobic interactions.
Repulsion between negatively charged backbone of DNA double helix is due to electrostatic repulsion forces.
Interaction between water and carbonyl oxygen of guanine is due hydrogen bonding
Explanation:
The hydrophobic effect refers to the tendency of non-polar substances forms aggregates in an aqueous solutions in order to avoid interactions with water molecules. This results in a favorable entropy increase.
For non-polar amino acids, hydrophobic interactions are important in stabilizing their structure wherein they are densely packed within the core of a protein while those with with polar groups are found in the exterior.
The phosphate backbone of DNA is negatively charged. Since like charges repel, therefore, electrostatic repulsion forces of the ions are responsible the repulsion of the backbone DNA double helix.
Hydrogen bonds are formed between electronegative oxygen atoms and hydrogen atoms of neighboring molecules due to the partial negative and positive charges on each of the atoms.
This hydrogen bonding is responsible for the interaction between water and carbonyl oxygen of guanine as the hydrogen atoms of the water molecules are attracted to the oxygen atoms of the guanine molecules due to the partial charges on each of the atoms.
Which of the following statements about translational termination is correct?A. Accessory proteins called elongation factors recognize the stop codon in the mRNA to terminate translation.
B. The ribosome keeps translating until it reaches the end of the mRNA and falls off the transcript.
C. Peptidyl transferase breaks the bond between the growing polypeptide chain and the tRNA in the P site, but there is no new charged tRNA in the A site, which results in the termination of translation and release of the polypeptide.
D. A special stop-tRNA enters the A site and terminates translation.
E. Rho proteins bind to the mRNA when the ribosome pauses and stops translation.
Answer:
C
Explanation:
The correct answer here would be that the peptidyl transferase breaks the bond between the growing polypeptide chain and the tRNA in the P site, but there is no new charged tRNA in the A site, which results in the termination of translation and release of the polypeptide.
The translation process stops when the stop codon in the mRNA being translated enters site A in the translation complex. When this happens, the release factor recognizes the stop codon and makes the enzymes that form peptide bonds to add water to the last amino acid on the chain.
The addition of water leads to the breaking of the peptide bond by peptidyl transferase, causing the separation of the polypeptide chain from the tRNA and the eventual release of the protein.
Hence, the correct option would be C.
What happened to the glomerular capillary pressure and filtration rate when you decreased the radius of the efferent arteriole
Answer:When the radius of the efferent arteriole become decreased, the stress and filtration rate each increased. When the radius of the efferent arteriole become increased, the stress and filtration rate each decreased. When you growth the blood stress, glomerular capillary stress and filtration rate will growth.
Explanation:
A scientist was studying the stars and their influence on the personalities of 100 people over a four year time period. Through his investigation he determined that people that were born during
August were more strong willed and driven than individuals born in October. People born in
October were more relaxed and could better handle stress. Is the scientist's research considered
science?
Answer: D
Explanation:
The answer no is correct it’s correct because the scientist followed personalities which is pseudoscience. So D is the answer.
A chemist measuring the viscosity of oils records the instruments and methodology used, so that another scientist will be able to achieve exactly the same results of the experiment. This is an example of ___________.
Answer:
This is an example of replication.
Explanation:
Getting a similar outcome when a trial is rehashed is called replication. Replication is significant in science so researchers can check their work. The consequence of an examination isn't probably going to be very much acknowledged except if the examination is rehashed ordinarily and a similar outcome is constantly acquired.
Hence, This is an example of replication.
Answer: c. replication
Explanation:
Rachael wants to test how sunlight impacts plant growth over time. She will add varying amounts of light to different sets of plants. What is the independent and dependable variable?
Answer:
Independent variable: varying amounts of light
Dependent variable: plant growth
Explanation:
The variable, which are factors that can be altered, in an experiment can either be independent or dependent. An independent variable is one in which the experimenter manipulates or controls in order to bring about an outcome. For this experiment conducted by Rachel, the independent variable is the VARYING AMOUNT OF LIGHTS.
The dependent variable is the variable that responds to changes of the independent variable. In other words, the dependent variable is the outcome of manipulating the independent variable. Hence, the dependent variable is dependent on the independent variable. For Rachel's experiment, the PLANT GROWTH is the dependent variable because it is what responds to changes in amount of light (independent variable).
What are the two main reasons for variation between organisms of the same species?
. A. Adaptation and Environment
B. Inheritance and Mutation
C. Inheritance and Environment
D. Genetics and Mutation
the two main reasons for variation between organisms of the same species are
Inheritance and mutation
Inheritance is the process by which genetic information is passed on from parents to childa mutation is a change in a genetic sequence. it includes changes in nucleotide base with another nucleotide base.as in same species no of chromosomes are same but variation occurs in genetic sequence so variation occurs in organisms.
Benefits and Consequences of Technology As Hite and Seitz (2016) discuss in Chapter 8: Technology, technological advancements and changes may affect how we can work to find solutions for the global threats discussed so far. Technological advances can and do affect development in positive and negative ways. Besides biotechnology, identify one technology that seems to have the greatest potential positive effect on food security. Discuss any potential negative uses of that technology. Do the benefits of these technologies outweigh the potential negative consequences they have on food security
Answer: Digital technology
Explanation:
Digital technology is a technology that helps show that devices can be more compact, faster, lighter, and more versatile and that information can be stored locally or remotely without minding the capacity and moved around instantaneously and conviniently . It has been a catalyst for efficiency of innovation this recent times.
Digital technology have been the basis for precision agriculture, geographic information system a technology that has helped agriculture to be more precise and apt.
Precision agriculture include the use of computerized system/Remote sensing to monitor a field or farm on the appropriate amount of a particular input that is needed and where exactly. It has been used for fertilizer application, herbicide application and it has reduce wastage to the minimum and efficiency is ensured in terms of output and this has helped food insecurity. The potential benefits of digital agriculture outweighs its disadvantage.
Please help me!
Atoms that will form chemical bonds are referred to as ____ , whereas
atoms that will not form chemical bonds, like the noble gases, are referred to as ___
Answer:
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
how many mL of total fluid was ingested if a patient at 6 ounces of juice, 4 ounce water, 8 oz diet soda, 10 owns coffee, and 6 oz milk
Answer:
3075.65 mL to the nearest 2 decimal places
Explanation:
Add the ounces together:
(I'm assuming one cup of coffee is 8 ounces, 8 x 10 = 80)
6 + 4 + 8 + 80 + 6
= 104 ounces
Convert to mL
104 x 29.5735296
= 3075.6470784 mL
In addition to the repair of DNA double-strand breaks, homologous recombination is a mechanism for generating genetic diversity by swapping segments of parental chromosomes. During which process does swapping occur?
Answer:
during cell division (meiosis)
Explanation:
During meiosis, DNA double-strand breaks (DSBs) between homologous chromosomes are induced and, after the exchange of DNA pieces, breaks are jointed by specific DNA-repair enzymes (such as DNA glycosylases). DSBs can be repaired by two different mechanisms: non-homologous end-joining (NHEJ) and homologous recombination (HR), which have different functional consequences. These mechanisms of recombination have potential for increasing the genetic variation since the resulting gametes will contain a different set of chromosome fragments.
Wood becomes petrified when its tissues are replaced by minerals. Although petrified wood is no longer part of a living organism, which property of life will still be present in the wood
Answer: Organization
Explanation: A piece of petrified wood was once part of a living organism that has had its tissues replaced by minerals. Which property of life will still be present in the wood?
a) homeostasis
b) response to stimuli
c) growth and reproduction
d) organization
e) metabolism
A petrified wood has had its organic remains or tissues replaced by minerals, a start to the slow process of being replaced with stone. The property of life still present in the wood would be that of organization which simply indicates that the petrified wood are made of cells--the most basic unit of life. As such, it still remains a highly organized, specialized entity with coordinated parts.
What statement is true of all living organisms?
A-They shrink and divide
B-They develop but don't grow
C-They grow but don't develop
D-They grow and develop
How would the absence of juxtamedullary nephrons affect the volume of urine and its osmotic concentration?
Answer:
Increase volume; decrease osmotic concentration
Explanation:
Nephron is the functional unit of a kidney.
The juxtamedullary nephrons is responsible for the development of the osmotic gradients. The osmotic gradient helps in ensuring the urine is well concentrated and helps in adequate water reabsorption.
The absence of juxtamedullary nephrons affect the volume of urine and its osmotic concentration by Increasing the volume and decreasing the osmotic concentration.
How would life be without television
Answer: Better and worse
Explanation: It would be better because then your not watching all this nonsense that you don't need to know, and because then you wouldn't be up in the house all the time watching TV to where, you stop excersing and spending more time with your family.
I could be worse because there are some edencational stuff on TV like the news, we wouldn't have entertainment.
Hope this helps^^
Which of these instruments can show the arrangement of atoms on the surface of a molecule? 10 points A) scanning tunneling microscope (STM) B) compound light microscope C) scanning electron microscope (SEM) D) transmission electron microscope (TEM
Answer:
A) scanning tunneling microscope (STM)
Hope this helps :)
A kitten weighs 3 pounds on earth, how much would the kitten weigh on the moon?
Answer:
3x1/6=1/2 pounds
Explanation:
Since weight is directly dependent on the acceleration of gravity, things on the Moon will weigh only 16.6% (≈ 1/6) of their weight on Earth.
Unipolar neurons carry ____________ information from the PNS to the CNS
Answer: " sensory " .
______________________________________________
Explanation:
Unipolar neurons known as "motor neurons" [or "afferent neurons"] carry sensory information from {tissues and organs in the PNS
["peripheral nervous system"] to the CNS ["central nervous system".].
______________________________________________
Which gas is responsible for global warming and Which gas is responsible for ozone layer depletion?
Answer:
Green house gases like carbon dioxide, carbon monoxide, carbon tetra chloride, methane, sulphur dioxide, nitrogen dioxide, etc .. are responsible for Global warming and Chlorofluorocarbons and nitrides of oxygen are responsible for Ozone layer depletion.
Explanation:
One of the first things the IPCC concluded is that there are several greenhouse gases responsible for warming, and humans emit them in a variety of ways. Most come from the combustion of fossil fuels in cars, buildings, factories, and power plants. The gas responsible for the most warming is carbon dioxide, or CO2.
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
during what stage of meiosis do daughter cells first become haploid?
Answer: Only after the first cytokinesis, when the daughter cells of meiosis I are fully separated, are the cells considered haploid. Following this first division, the cell begins meiosis II with prophase II, making this the first haploid meiotic stage.
Explanation:
The stage of meiosis is when the daughter cells first become haploid is meiosis I, after cytokinesis.
What is meiosis?Meiosis is a process of cell division that occurs only in germ cells, during the process of reproduction. It is divided into meiosis I and meiosis II. The process completes in eight stages.
After the process of cytokinesis, the daughter cells become haploid and have their chromosome paired up.
Thus, Meiosis I, the first step of meiosis after cytokinesis, is when the daughter cells initially become haploid.
Learn more about meiosis, here:
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what are the disc shaped membranous structures inside of the chloroplast where the light-dependent reactions take place
Answer:
These are the thylakoids
Explanation:
The thylakoids which contains the chlorophyll is the primary site of photosynthesis. It is covered by layers of cell called the thylakoid membrane.These are the actual site for light dependent reaction.This membrane contains both photosytem I and ii, ATPase enzymes, and Cytochrome b6f complex.While the photosystem i and ii transfer elecrons during photosynthesis, the ATPase enzyme control the catalysis the phosphorylation of ADP to ATP needed for the light independent stage, the Cytochrome proteins acts as the ETC. involved in the transfer of electron during light dependent stage.
When thylakoids are packed together in disc shape they are refer to as Grana,(singular -granum).Each grana are linked together by intergrana.Thus two or more grana are linked by intragrana to form a single photosynthetic functioning unit.The entire structure is bath continuously by the fluid medium-Stroma.
Their stacked and disc shape is to increase the surface area available to accommodate enough ETC, needed to transport electron for chemiosmosis needed for photosynthesis.
Area under velocity-time graph gives:
Answer:
The area under a speed-time graph represents the distance travelled.
How was cell discovered?
Answer:
The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope.
charles darwin is credited with outlining the principles of evolution by natural selection. what aspects of the scientific method can be identified in darwin's work
Answer:
Charles Darwin's work followed the rules of hypotheses creation and testing.
In order to prove a scientific suspicion, a true scientist has to follow the above methods.
So Darwin probably theorized that the offspring of certain living entities were by either environmental conditioning or by natural selection different genetically from their parent.
He tried this hypothesis over time and using the results he got, modified his theory.
Cheers!
A solution that is hypotonic to a cell has
Answer:
more solvent molecules than solute molecules
carbon, nitrogen and phosphorus are examples of (compounds/nutrients/reservoirs/sediments).
Answer:
nutrients
Explanation:
A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms).
Carbon, Nitrogen, and Phosphorus are examples of nutrients. Thus, the correct option for this question is B.
What is the importance of nutrients?Nutrients are important for organisms in order to furnish the source of energy that is ultimately required by the animals for the accomplishment of metabolic functions like tissue repair, building, and growth of cells, reproduction, etc.
These nutrients form complex compounds like carbohydrates, fats, vitamins, minerals, proteins, etc. The function of each complex compound is very specific. For example, carbohydrate is known as energy-deriving molecules which deliver immediate energy to the cells of living organisms, proteins are required for cell and tissue repairment, etc.
Therefore, carbon, Nitrogen, and Phosphorus are examples of nutrients. Thus, the correct option for this question is B.
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