Answer:
It is difficult to determine the age of our planet because the time this accretion process took is not yet known and predictions from different accretion models range from a few million up to about 100 million years
The "light" reactions use______________
to capture energy that is
used during the second part of photosynthesis
A)carbon dioxide and water
B)sunlight and water
C)sunlight and carbon dioxide
D)glucose and sunlight
Answer:
B)sunlight and water
Explanation:
sunlight to excite an electron and water for photolysis
Meerkats live together in groups to help raise and protect their offspring. Meerkat pups are most vulnerable when they are away from their burrow foraging for food. Adult meerkats exhibit sentinel behavior, standing upright and making alarm calls to warn other members in the group that predators are nearby. In a study of meerkat behaviors, scientists observed meerkat foraging groups and recorded the presence or absence of pups along with the frequency of adult sentinel behavior. The scientists determined that sentinel behavior increased when pups were present in the foraging group. Which of the following correctly identifies the dependent and independent variables in the described study? A. The frequency of sentinel behavior is the independent variable, and the presence of pups is the dependent variable. B. The presence of pups is the independent variable, and the frequency of sentinel behavior is the dependent variable. C. The number of predators is the independent variable, and the presence of pups is the dependent variable. D. The distance from the burrow is the independent variable, and the number of predators is the dependent variable.
Answer:
The correct answer is - option B. The presence of pups is the independent variable, and the frequency of sentinel behavior is the dependent variable.
Explanation:
The independent variable in a study or experiment is a variable that is subject to change or manipulated to see the effect on the result of the study by influencing the dependent variable. In this study, the independent variable that is manipulated is the presence of the pups to see what is led to the behavior of meerkats.
The dependent variable is a variable that is influenced in a study by the independent variable and led to the result of the study as the frequency of sentinel behavior is influenced by the presence of the pups so the dependent variable here is the frequency of sentinel behavior.
Write a paragraph that includes all of the above: bats, c o v i d 19, corona viruses, colds, crown, respiratory, SARS CoV 2, spill over, zoo nosis
I like the word bats. It is cool. I also like the world "c o v i d 19" and "coronaviruses". I live getting colds cuz my mother treats me like her queen and puts a crown on my head. I am suffering from respiratory malfunction so please donate to my gofundme. Sars CoV 2 sucks. I spill over my shirt- NOOO! I go to the zoo for "zoo nosis" and then I sleep.
Although bipedalism is unusual, humans are not the only living bipeds. For example, some flightless birds are also bipedal. Identify a living nonprimate animal that is also a biped. Then, compare its bipedalism with our bipedalism. Try to consider how it moves and some of its possible adaptations (such as limb length). Use resources in your classroom, credible online sources, or books to help you if necessary.
Explanation:
In simple terms, the term bipedalism refers to a term used to classify organisms that are equipped and use two legs or limp to walk, stand, jump or run.
One other nonprimate animal that is also a biped is the ostrich. When we compare the bipedalism of an ostrich with our (humans) bipedalism we discover that in terms of
Speed; an ostrich can move faster than an average human, reaching speeds of up to 70 km/h (43 mph).
limb length; its limb length can range from 10 to 16 feet (120 inches to 192 inches) which is far greater than the average length of an adult human's legs.
Predict the phenotype for expression of the E. coli trp operon enzymes for the following mutants: a) A to U mutation at position 48 of the trp operon leader RNA. b) Deletion from positions 114-121 of the trp operon leader RNA. Explain your predictions taking into account the alternate stem-loop structures of the leader RNA.
When there is a lot of pollution, rain can be acidic, harming plants and animals.
What is this an example of?
O an individual affecting a community
O competition between a population and a community
a mutualistic type of symbiosis
an abiotic factor affecting an ecosystem
When rain becomes acidic as a result of pollution, this is an example of an abiotic factor affecting an ecosystem.
What is pollution?
The term pollution has to do with the contamination of the environment and energy that is unsafe for living organisms.
When rain becomes acidic as a result of pollution, this is an example of an abiotic factor affecting an ecosystem.
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#SPJ2
The main source of cell energy is called ATP?
in addition to long periods of time, all of the following are necessary for the formation of fossil fuels EXCEPT –
pls help :(
extreme heat
organic matter
volcanic eruption
intense pressure
Answer:
volcanic eruption
Explanation:
its just not necessary :)
A particular triplet of bases in the coding strand of DNA is 5'-CGT-3: Which of
the following is the anticodon component of the tRNA that binds the mRNA
codon transcribed from this DNA?
A3 AGUS
B. 3 - UGG - 5
CDA5
DOS
Since in RNA Cytosine(C) binds with guanine(G) and thymine(T) binds with adenine(T) the anticodon for
the mRNA codon is GCA
the tRNA anticodon is CGU
The platypus bill has a multitude of receptors on it. Initially, researchers thought that the receptors were all mechanoreceptors (i.e. for sensing textures, shapes) because platypus can not smell or detect odors underwater. The scientific community was shocked (pun intended) when it was reported that some of the receptors were actually electroreceptors. Design an experiment to determine if platypus prefer to hunt for prey through mechanoreception or electroreception
Answer:
Experiment: to put insect preys with different textures (but of the same group, for example, moths) into two conditions: 1-pure water and 2-ion-rich water solution. For this experiment, it is important to highlight that the platypus is a semiaquatic mammal that eats insects that fall into the water. Pure water is a poor conductor of electricity, while water containing charged ions (and also impurities) is a good conductor of electricity. In consequence, if the platypus prefers to hunt through electroreception, it is expected that the ability for hunting will be better in an ion-rich water solution than in pure water. Second, if the platypus prefers to hunt through mechanoreception, it is expected that the ability for hunting will vary depending on the type of texture that exhibits insect preys (in this case, moths).
Explanation:
Mechanoreception can be defined as the ability to detect and respond to a stimulus by using sensory cells (neurons) that respond to mechanical pressure and/or distortion, while electroreception is the ability to respond to electrical stimuli, thereby detecting weak electric fields in water. In the experiment above described it is possible to determine the hunting preferences under differential electroreception/mechanoreception conditions. Statistical scores such as p-value can be used to determine the outcome of the experiment.
Incomplete dominance produces offspring which look like A.The mother B. The father C. A blend of mother and father
Answer:
C
Explanation:
Incomplete Dominance would mean neither parent has full control.
Answer:
C. A blend of both parents
Explanation:
Which layer is between the mesosphere and the inner core? (7 points)
a
Asthenosphere
b
Crust
c
Lithosphere
d
Outer Core
Answer:
i think its otter core im not sure
Explanation:
doing the test rn i will be back and say if its wrong or not
Answer:outer core
Explanation:
reactant product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
es
A)
O grams
B)
2 grams
4 grams
D)
8 grams
Law of Conservation of Matt
SPS3 a conservation of Mass In Chemical Reactic
Answer:
4 grams
Explanation:
If in an experiment, we have 4g of reactants, the mass of the products will also be 4g.
This is in compliance with the law of conservation of mass in a chemical reaction.
According to this law,
"in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".
If:
A + B → C
4g 4g
mass of A and B must be equal to the mass of the product according to the law of conservation of mass.
During most of the cell's life, the chromosomes will be in the form of
O Chromatin
O Sister chromatids
O Homologous chromosomes
O Tetrads
During most of the cell's life, the chromosomes will be in the form of - Chromatin.
The DNA wrapped around histones is further organized into higher-order structures that give a chromosome its shape.
This form of the chromosome is called chromatin and it is the form chromosome most of the life of the cell.In this form chromatin is decondensed, meaning that it exists in long, thin strings form.It is found in the interphase most of the cell's life.Thus, During most of the cell's life, the chromosomes will be in the form of - Chromatin.
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- What is meant by nosocomial infection?
Answer:
Hi
Explanation:
A nosocomial infection is contracted because of an infection or toxin that exists in a certain location, such as a hospital. People now use nosocomial infections interchangeably with the terms health-care associated infections (HAIs) and hospital-acquired infections.
Which of these statements is true of stable atoms?
a. They have an equal number of protons and neutrons.
b. They have an equal number of electrons and protons.
c. They have an equal number of neutrons and electrons.
d. They are constantly losing or gaining particles.
Answer:
b they have equal number of protons and electrons
Explanation:
d is the ans vbbv. u bb
vu
Which relationship is the arrow pointing to in the
cladogram?
A. the common ancestor for X and Z
B. the common ancestor for X and Y
C. the common ancestor for X, Y, and Z
D. the common ancestor for Y and Z
The answer is B on edge 2020
That isB the common ancestor for X and Y since that's where the branching of the two species occurs
Answer:
b its right
Explanation:
Which statement best describes how organisms demonstrate the transformation of energy?
Light energy from the Sun is converted into mechanical energy in a rabbit, which is converted into thermal energy and dispersed into the atmosphere.
Light energy from the Sun is converted into chemical energy in a wildflower, which is converted into mechanical energy in a deer that eats the wildflower.
Light energy from the Sun is converted into mechanical energy in a deer, which produces waste that is absorbed by a wildflower to produce chemical energy.
Light energy from the Sun is converted into chemical energy in a mushroom, which is converted into thermal energy as the mushroom breaks down dead matter.
Answer:
C
Explanation:
I would Say that is your best answer
Answer:
A
Explanation:
Development of the neural groove is known as
neurulation
gastrulation
organogenesis
O involution
Answer:
The correct answer is - neurulation
Explanation:
The neural groove is a groove of the neural plate which is a thick plate that is enclosed by the neural folds of an embryo. The neural grove forms the neural tube which expands and develops into the spinal cord and brain.
The development of the neural grove is taken place during the process known as neurulation which is characterized by all characteristic development related to the neural groove and ventricular system.
Ranchers can increase their yields of premium beef and consume fewer resources if they practice good environmental stewardship.
True
False
Answer:
true
Explanation:
Answer:
true
Explanation:
The correct answer is True. Stewardship is a term that refers to the care of the land in this usage. Because the United States is a model for sustainable beef production practices, American ranchers produce 20 percent of the global beef supply with only 7 percent of the world’s cattle.
An unknown pill was found in Anna's digestive system. To figure out the identity of the unknown pill you "performed" testing on the unknown pill and different known pills by adding a variety of chemicals to the pills and observing their reactions. By comparing the reactions of the unknown substances to the known substances, you were able to identify the unknown pill.
Match the part of the experiment with the correct term.
Independent Variable=
Dependant Variable-
Control=
Constant=
A. The known Substances
B. adding 3 drops to each chemical to each substance
C. The reactions to different chemicals
D. Identity of the pill
Answer:
Independent Variable= Identity of the pill
Dependent Variable = The reactions to different chemicals
Control= The known Substances
Constant= adding 3 drops to each chemical to each substance
LOTS OF POINTS!?!?!Where does the CO2 in the atmosphere come from?
Answer:
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
Explanation:
Answer: Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
Explanation:
how does phosphorus enter the phosphorus cycle?
Answer:
Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water. Plants take up inorganic phosphate from the soil.
Explanation:
Why is the hydrolysis of water required for photosynthesis?
Hydrolysis is a chemical process in which a water molecule is inserted.
In light-based reaction, which occurs in the thylakoid layer, chlorophyll absorbs energy from the sun and converts it into chemical energy through water. Light-dependent reactions release oxygen to water hydrolysis as a by-product.
Hope it helps!
Water is one of the most important components of photosynthesis. The hydrolysis of water is required to provide the Electrons and protons( Hydrogen ions) in photosynthesis.
Light Reaction photosynthesis:
It is the phase in which plant cells produce NADPH and ATP via the energy of the electron transport chain.
In this phase,
The water hydrolyzes to produce, electrons and Hydrogen Ion. Electrons move in from protein to protein and release their energy.This energy is used to pump the more hydrogen ion into the thalakoid lumen. The final electron is used to reduce the NADP molecule.Therefore, the hydrolysis of water is required to provide the Electrons and protons( Hydrogen ions) in photosynthesis.
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Which of the following describes a way that decomposers are important to an ecosystem?
Answer:
Decomposers recycle essential nutrients back into an ecosystem.
Explanation:The decomposers are the small microorganisms which can be found in the soil habitat. These organisms obtain energy by break down of organic matter generated after the death of plants, animals and their residual matter. Through the process of decomposition the decomposers release nutrients such as nitrogen and carbon back to the environment. These nutrients are absorbed by the plants through soil. This way the nutrients are recycled in an ecosystem by decomposers.
hope it helps and brainliest if helped......
all matter Mass and time that exists and has ever existed is contained in which of the following
the sun
the planets
the milky way
the universe
Answer:
The Milky Way
Explanation:
The Milky Way not only contains mass and time but it contains all of the solar systems, dust, maybe a black hole, and a lot of stars which is matter. Milky Way is a galaxy in a universe that contains a lot of planets it also contains mass and time.
It hasn't been confirmed nor denied but it is known that the milky way contains dark matter which is another type of matter and mass.
Hope this helped :)
Answer:
The Universe
Explanation:
just got done with the quiz
What other cofactors or cosubstrates does the pyruvate dehydrogenase complex require to function?
Answer:
Pyruvate dehydrogenase (PDH) is a very high molecular weight mitochondrial multienzyme complex.It includes three types of enzymes that need the participation of five coenzymes to develop their activity, three of them catalytic cofactors (TPP, lipoamide, FAD) and two stoichiometric (NAD and CoA). Two enzymes involved in regulating its activity are also part of the enzyme complex.
Explanation:
PDH is a multienzyme complex formed by multiple copies of three catalytic proteins (E1, E2 and E3) and other structural and regulatory (phosphatase, kinase). It requires, in turn, different coenzymes (thiamine, lipoic acid) for its proper functioning. Given its enormous importance at a key point in energy production, it is highly regulated. E1 depends on thiamine pyrophosphate and catalyzes 2 stages: 1) decarboxylation of pyruvate, forming a hydroxyethyl-thiamine-diphosphate intermediate; 2) reductive acetylation of the lipoyl group, covalently linked (amide) to E2. E2 catalyzes the transfer of the acetyl group to CoA (3). E3 regenerates the oxidized lipoyl, transferring its electrons first to FAD and then to NAD.
give any two medical uses of oxygen
Explanation:
Medical oxygen is used to: ... restore tissue oxygen tension by improving oxygen availability in a wide range of conditions such as COPD, cyanosis, shock, severe hemorrhage, carbon monoxide poisoning, major trauma, cardiac/respiratory arrest. aid resuscitation.
this is you're answer please give me thanks
Answer:
In cells, oxygen is needed for aerobic respiration, which allows for the extraction of energy from ingested foods. Thus supplemental oxygen at home and in hospitals is vital for those with breathing disorders such as emphysema.
Compressed oxygen tanks are used by mountaineers at high elevations to counteract the decreased O2 pressure at these altitudes.
Supplemental oxygen is needed for surgical patients intentionally rendered paralyzed for medical procedures, in which "heart-lung machines" keep their vital functions going.
Oxygen can be used as a sterilizing agent to kill certain anaerobic bacteria that are killed by sufficient exposure to the gas.
Industrial Uses of Oxygen:
Oxygen is needed for the reaction that converts carbon to carbon dioxide gas in steel working, which takes place under high temperatures in a blast furnace. The carbon dioxide produced allows for the reduction of iron oxides into more pure iron compounds.
Oxygen is used in other applications involving metal and requiring high temperatures, such as welding torches.
Aerospace Uses of Oxygen:
In liquid form, oxygen is used widely as an oxidizing agent for use in missiles and rockets, where it reacts with liquid hydrogen to produce the terrific thrust needed for take-off. Astronaut spacesuits include a nearly pure form of oxygen.
Oxygen is used to degrade hydrocarbon compounds, which are broken apart by heating them. This is used to create combustion that usually liberates water and carbon dioxide, but can also produce the hydrocarbons acetylene, propylene and ethylene.
Oxygen is used in sewage-treatment and water-purification plants. It is forced through water to increase the production of bacteria that metabolize waste products in the water.
Oxygen gas (O2) is needed to produce energy in things not linked to an electrical supply of their own, such as generators and vehicles (e.g., ships, airplanes and cars).
Question 10 ot 25
The practice of science can answer only scientific questions. And scientific
questions guide the design of investigations. What is usually true of the
possible answers to a scientific question?
OA. They can lead to additional questions about the phenomenon.
OB. They overturn an established scientific theory.
OC. They lead to the discovery of a new scientific law.
OD. They remove the need for further scientific inquiry.
Answer:
B. they can overturn. an established scientific theory
Answer:They can lead to additional questions about the phenomenon
Explanation:
PLEASE HELP IN ONE MINUTE WILL MARK BRAINLEST.
rubber it distributes heat, wool heat resistant, and silicone heat protection and grip
Answer:
whool and leather are used because whool is insulated very well and leather does not retain heat very well