Answer:
the US fish and wildlife service
Explanation:
Does the hormone estrogen increase the milk yield of dairy cows?
In an experiment answering the question above: what is the control group? <------------
The control group in an experiment to show that the hormone estrogen increases the milk yield of dairy cows is the presence of cows that have not been administered with the addition of this hormone or inhibited in the production of estrogen.
What is the control group?The control group in an experiment is a given group of the sample which is not under treatment, which allows us to make comparisons with the target group.
Therefore, with this data, we can see that the control group does not receive the experimental treatment.
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Can you please help me fast
Answer:
A.
Explanation:
Scientists classify different minerals by their elements.
The apparatus shown below measures the oxygen consumed by a small animal. As oxygen is consumed, the water droplet moves closer to the flask. Because carbon dioxide is absorbed by the potassium hydroxide solution on the filter paper, it does not affect the results.
You are performing a lab in biology class to determine, quantitatively, if temperature affects the rate of oxygen consumption by a small animal. You will be testing the oxygen consumption of the animal at 0ºC, 15ºC, and 30ºC.
1) Write a prediction about the relationship between oxygen consumption and temperature. (1 point)
2) Using this apparatus, or a similar one, write a procedure to test your prediction. Procedures should be detailed, specific, and written in numbered point form. (2 points)
Since they have a greater metabolism, smaller creatures breathe more quickly.
What is Oxygen consumption of an Experiment?1. In general, the rate of oxygen consumption increases with the increase of temperature. So, here at 30 degree the rate of consumption will be the highest, then at 15 degree, at zero degree it will be ice droplets.
2. The aerobic bacteria present in the water respire in the presence of oxygen. at 0,15 and 30 degree. Here anerobic bacteria can be taken as a control.
So, a culture with medium of aerobic bacteria/yeast can be taken.
It is kept in shaking condition 150-200 rpm and then the temperature is kept at 37 degree.
Bacteria has a doubling time of twenty mins, and yeast has a doubling time of 90mins. So, it is kept at overnight incubation for proper growth of the bacteria. Water droplets are visible at the cap.
At 30 degree the consumption is maximum, then the 15 degree is relatively lower and higher is no consumption at 0 degree where it is frozen.
The oxygen consumption is related to the respiration rate of aerobic bacteria , yeast.
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Which of the following is a difference between radiation and conduction
Answer:
radiation is the transfer of heat by E.M radiation through indirect contact ex. the sun is transferring heat while
conduction is the transfer of heat through direct contact ex. eggs cooking on a frying pan
Explanation:
hope this helps!
24. A student observes two different types of cells (P and Q) under a microscope and records observations about the cell structures in a table.
Based on the observations, how can the student classify Cells P and Q?
A. Cell P is a bacterial cell, and Cell Q is a protist.
B. Cell P is a protist, and Cell Q is a bacterial cell.
C. Cell P is a bacterial cell, and Cell Q is a plant cell.
D. Cell P is a plant cell, and Cell Q is a bacterial cell.
D, cell p is definitely a plant cell
21. The diagram shows oxygen moving into an animal cell.
Which statement best describes the cell after this process has occurred?
A. The concentration of oxygen will be higher inside the cell compared to outside the cell.
B. The concentration of oxygen will be lower inside the cell compared to outside the cell.
C. The concentration of oxygen inside and outside the cell will be nearly equal.
D. The concentration of oxygen inside the cell will be minimal or zero.
Peripheral tissues receive oxygenated blood via the circulatory system. Delivering oxygen to cells, oxygen diffuses through tissues along a gradient of high to low amounts. Thus, option B is correct.
What is the movement of oxygen in cell?Hemoglobin and oxygen interact chemically inside the red blood cell, where it is carried both by free diffusion and hemoglobin-facilitated diffusion. In blood plasma, oxygen is transferred by free diffusion and convection through cell membranes.
Therefore, The concentration of oxygen will be lower inside the cell compared to outside the cell.
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Where are the two locations that ribosomes are housed after their production inside the nucleus?
What accounted for the
differences in the tortoise
shells among the islands of
the Galapagos?
A. the amount of available vegetation on the
island this
B. the amount of rainfall the island received
C. the number of predators on the island
The amount of available vegetation on the island accounted for the differences in the tortoise shells among the islands of the Galapagos (Option A).
What is an evolutionary adaptive feature?An evolutionary adaptive feature can be defined as any feature (in this case the shells in tortoises) which are due to certain environmental conditions that lead to the reproductive success of the individual having the feature in the population.
Therefore, with this data, we can see that evolutionary adaptive features are able to enhance the survival of organisms and they are associated with certain conditions.
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3. Why do scientists think that Mars and some of the moons of the solar system may contain
some form of life?
Do eukariota cells have mitochondria?
Do Eukaryotic Cells have Mitochondria?
The answer is YESIn addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes.
What is a Eukaryotic cell?
A eukaryotic cell is one of two different types of cells. Organisms that are based on the eukaryotic cell are called “eukaryotes” and include plants, animals, fungi, and protists.
What is Mitochondria?
The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell. Each cell can have from one to thousands of mitochondria. Mitochondria also contain extranuclear DNA that encodes a number of rRNAs, tRNAs, and proteins.
HELPPPPPP PLEASSEEEE
A dominant trait is written with capital letters while a recessive trait is written with lowercase letters-- ie.
Homozygous dominant: RR
Homozygous recessive: rr
If a trait was heterozygous, it would have the dominant trait.
Hope this helps :)
Which of the following
describes the study of
embryology?
A. Embryology helps scientists
discover the predators of a species.
B. Embryology is the study of adult
organisms.
C. Embryology reveals similarities
between organisms as they are
developing before birth. This is the answer
D. Embryology helps scientists
understand how organisms interact
with their environment.
Answer:
C. Embryology reveals similarities
between organisms as they are
developing before birth. This is the answer
Explanation:
embryology is the branch of Science that is related to the formation , growth and development of the embryo.
The four levels of protein structure are primary, secondary, tertiary, and quaternary structure. Review the levels of protein structure by clicking the image below.
Drag each label into the appropriate bin depending on whether it applies to primary, secondary, tertiary, or quaternary structure.
Proteins are composed of a sequence of amino acids linearly arranged. To accomplish their functions thet must adopt different structures. Primary structure: Amino acid sequence. Secondary structure: Alpha helix. Beta pleated sheet. Results from hydrogen bonding between the backbone constitutents of the polypeptide. Tertiary structure: Results from interaction between side chains (R groups) of amino acids. The overall shape of the polypeptide. Quaternary structure: The aggregation of multiple polypeptide subunits.
What is the protein structure?Proteins are molecules composed of several amino acids.
Amino acids are monomers composed of
a central carbon, a hydrogen atom, a carboxyl group (COOH), an amine group (NH₂), and an R group.
The R group is what differentiates one amino acid from another one.
Several amino acids linearly arranged and connected by peptidic bonds compose the polypeptide.
The peptidic bond is the union of two amino acids by their carboxyl and amine groups.
The R group of each amino acid stabilizes the molecule through their interactions.
The amount of amino acids that compose the polypeptide and their order in the chain determines the primary structure of the protein. The primary structure of the proteins determines the tertiary one.
Protein functions also depend on the amino acid sequences. Proteins with different functions have different sequences. And among species, proteins with similar functions have similar structures.
The primary structure is basically, the sequence of amino acids in the chain. It refers to the amino acid arrangement.
The secondary structure is achieved through hydrogen bonds (between -CO- and -NH- groups), when the polypeptidic chain folds and different regions of the molecule get in touch. The molecule can adopt conformations like the alpha-helix and beta-sheet.
The three-dimensional structure involves a higher folding degree, in a tridimensional space. This level makes the protein even more stable in the environment and capable of accomplishing its functions.
The quaternary structure can be seen when proteins are composed of more than one subunit. The way in which these subunits arrange is the fourth structure.
The hydrophilic R-groups stay permanently in the molecule interior, avoiding interaction with water.
In the image,
Primary structure: Amino acid sequenceSecondary structure: Alpha helix. Beta pleated sheet. Results from hydrogen bonding between the backbone constitutents of the polypeptide.Tertiary structure: Results from interaction between side chains (R groups) of amino acids. The overall shape of the polypeptide. Quaternary structure: The aggregation of multiple polypeptide subunits.You can learn more about protein structure at
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How can hurricanes collect so much water
Environmental degradation is when natural resources are__________.
A. Used more quickly then are replaced.
B. Replaced
C. Unlimited
D. Used at the same rate they are replaced
Answer:
a. used more quickly then are replaced
2. There were 42 grizzly bears in a provincial park in 1980. There were 30 grizzly
bears in the same provincial park in 1990. What is the rate of change per year of
grizzly bears in this time period?
A. -12 grizzly bears/year
B. -1.2 grizzly bears/year
C. 1.2 grizzly bears/year
D. 12 grizzly bears/year
The rate of change per year of grizzly bears in this time period is B. -1.2 grizzly bears/year.
What is the rate of change?Rate of change (ROC) refers to how fast something changes over time. Thus, it is the acceleration or deceleration of changes (i.e., the rate) rather than the magnitude of individual changes. Rate of change is used in finance to understand price returns and identify momentum in trends.
It is frequently used when discussing momentum, and it can be expressed as a ratio of a change in one variable to a corresponding change in another. The slope, rise over run, or change in over change in is the rate of change for a line.
In this situation, tjere were 42 grizzly bears in a provincial park in 1980. There were 30 grizzly bears in the same provincial park in 1990.
The rate will be:
= (30 - 42) / 10
= -12 / 10
= -1.2
The correct option is B.
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A team of engineers is doing a cost-benefit analysis to determine whether
they should develop new technology. What are two risks to human health they
should include in their analysis?
A. Increase in human diseases
B. Reduced workplace safety
C. Loss of habitat
D. Damage to an ecosystem
E. Using up natural resources
The two risks to human health that they should include in their analysis may significantly include an increase in human diseases and damage to an ecosystem. Thus, the correct options for this question are A and D.
What is Cost-benefit analysis?Cost-benefit analysis may be characterized as a way to compare the costs and benefits of an intervention, where both are expressed in monetary units. It is a systematic approach to estimating the strengths and weaknesses of alternatives.
When a team of engineers is doing a cost-benefit analysis in order to determine whether they should develop new technology. There are multiple factors that impact the habitat and living organisms.
But the two major risks to human health that they should include in their analysis would be an increase in human diseases and damage or threat to an ecosystem.
Therefore, the correct options for this question are A and D.
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Scientific Method
Define the following:
a. Indegendent Variable:
b. Dependent Variable:
c. Control Variable:
d. Controlled experiment
e. Hypothesis:
1. You have measured the rate at which a fish breaths at various temperatures by courting the rate at which its gills open. The data table is shown below. Create a line graph depicting the results
a. What is the independent variabie? why
b. The dependent variable? Explain whiy.
c. What happens to breathing rate with increase in temperature?
d. Identity at least 3 control variabios in this experiment.
e. What do you think would happen if you raised the temperature even more? Why would it be a bad ides to do this?
Biochemistry
2. Fill in chart below.
When conducting an experiment, the researcher needs to define the involved variables to state a proper hypothesis. 1a) Ind Var Influences the dep. var. and the results. 1b) Dep Var is affected by the indep. one. 1c) Cont Var remain constant. 1d) Cont Exper. Controlled and changed by the researcher. 1e) Hypothesis claim and prediction about the relationship between variables and the experiment results. 2a) Ind Var: Temperature. 2b) Dep Var: Breathing rate. 2c) the increas ein temeprature causes and increase in breathin rate. 2d) Cont var: water pH, food, species. 3) Carbohydrate: C,O,H. Monosaccharidae. Source of energy. Glucose / Lipids: C,O,H. Fatty acids. Structure and energy. Phospholipids.
What are variables and hypothesis?When conducting an experiment, the researcher needs to define the variables involved in that experiment. These are the followings,
1A) Independent variables are the ones that affect the results by influencing the response of the dependent variable. The researcher changes the state or values of the independent variable to observe how these changes affect the dependent one. 1B) Dependent variables are the ones affected by the independent ones. So any change that might occur in the independent variable means or leads to a change in the dependent one. This change might be directly or inversely proportional to the change in the manipulated variable. 1C) Controlled variables are also known as constant variables. These are all the remaining variables that are involved in the experiment, but the researcher is not interested in these ones or in their effects. So, to avoid their influence on the results, they must be kept constant in the control and experimental groups.In this type of experiment, we can talk about a controlled experiment (1D) because the researcher is not just observing, but also controls all the variables to analyze the interaction between the ones of interest.
Once the variables are identified, the researcher can make the hypothesis.
A hypothesis (1E) is a scientific conjecture that requires corroboration. It is a claim of how it works the relationship between two or more variables (the dependent and the independent ones).The researcher hypothesizes to predict what is going on or what is expected to occur.In the exposed experiment about fish breaths we can see how temperature affects the breathing rate. As temperature increases, the breathing rate increases as well.
2A) Independen variable: Temperature. The researcher increases temperature and observes the rate at which its gills open. So the researcher records how the breathing rate responds to changes in temperature.
2B) Dependen variable: Breathing rate. It is affected by temperature. Its change is directly proportional to temperature changes.
2C) The increase in temperature causes an increase in the breathing rate.
2D) Controlled variables might be, for instance,
food availabilitywater pHoxygen concentrationfish speciesfish developmental stage2E) If temperature increases even more, the brething rate will keep increasing. However, fishes are very sensitive to temperature changes, so eventually they would be so affected that their breathing rate would decrease.
3)
Carbohydrates: Carbohydrates are polymeric molecules essential for life as they are the main source of energy necessary for organisms.
Contains: C, O, HMade up of: Monomers - Monosaccharidaes (CH₂O)ₙFunction: source of energyExample: GlucoseLipids: Lipids are composed of fatty acids and other components that vary among lipids.
Contains: C, O, HMade up of: Monomers - Fatty acidsFunction: membrane structure, energy provision, and signalingExample: PhospholipidYou can learn more about variables and hypothesis at
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What is a homologous structure?
A. a structure that is ancient
B. a structure among organisms that develop from the
same tissue but have different mature forms this is answer
C. a structure that no longer serves a function in an
organism
Answer:
Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.
how does a person increase their muscle mass
Answer:
by working out
Explanation:
identify the structures on this midsagittal view of a brain model.
Top part of brain model:
Left - Lateral ventricleRight - BrainstemLeft side of the brain model:
1st - Corpus callosum2nd - Thalamus3rd - Hypothalamus4th - Cerebral aqueductBottom part of the brain model:
1st left - Pituitary gland2nd left - Pons2nd right - Medulla oblongata1st right - Fourth ventricleWhat is the midsagittal view of the brain?The midsagittal view of the brain shows the major parts of the brain which are three in number. These are the cerebrum, cerebellum and brain stem. Midsagittal plane is the median or middle plane of the body that passes through the midline structure, in this case of the brain.
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Consider the three most common types of skin cancer. Then, click and drag each label into the appropriate category.
Arises from keratinocytes in the deepest layer of the epidermis
Raised, reddened, scaly appearance
If metastasized, the deadliest skin cancer
Seldom spreads to other tissues
Arises from superficial cells of the epidermis
Caused by mutations commonly found in moles
Most common type
Can spread from the keratinocytes to the ph nodes
Arises from the cells that protect from UV light
Least common type
The labels for each type of skin cancer are;
Basal Cell Carcinoma:
Most common typeSeldom spreads to other tissuesArises from the deepest layer of the epidermisMelanoma:
If metastasized, the deadliest skin cancerArises from the cells that protect from UV lightLeast common typeCaused by mutations commonly found in molesSquamous Cell Carcinoma:
Arises form superficial cells of the epidermisRaised, reddened, scaly appearanceCan spread from the keratinocytes to the lymph nodesWhat is skin cancer?Skin cancer is an abnormal growth of skin cells often occurring after long exposure to the sun. Basal cell carcinoma is a most common type that rarely spreads to other tissues and comes from the epidermis.
Squamous Cell Carcinoma and melanoma are other types of skin cancers and melanoma is the deadliest of them.
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What is the function of cilia in animal-like protists?
A. movement
B. reproduction
C. decomposition
D. photosynthesis
How many carbon-carbon BONDS does pyruvate have? How many carbon-carbon BONDS does acetyl-CoA have?
Answer:
Pyruvate—three carbons—is converted to acetyl CoA, a two-carbon molecule attached to coenzyme A.
Explanation:
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Why is cell differentiation essential for every complex multicellular organism?
Cell differentiation is an essential process for the overall development, growth, reproduction and longevity of the complex multicellular organisms.
What is Cell differentiation?
Cell differentiation is the process in which the stem cells become more specialized into different cells. Cell differentiation is an essential process because it creates diversity in life on the planet Earth. It creates diversity within the cells of the body of an organism and allows the cells to create unique structures which fit their individualized functions in that organism.
Cell differentiation is an essential process for the development, growth, reproduction, and longevity of all the complex multicellular organism as it is responsible for the formation and maintenance of different organ systems in an organism.
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Please help what would this be?
Answer: 97% water
Explanation:
97+3=100
Which phenotype is recessive? *
O mm
O Mm
O Black
O Black and white spotted
Answer:
mm
............................................
Identify the cranial nerve and label its associated structures (denoted by green ID tags).
Optic Chiasm
Optic Nerve
Olfactory Bulb
Olfactory Nerve
Auditory Nerve
Ollactory Tract
Optic Tract
The first to the left is the Optic Nerve, The second to the left is the Optic Tract while the one to the right is Optic Chiasm of the labeled cranial nerves.
What are cranial nerves?The cranial nerves are of 12 pairs and can be found at the back of the human brain. These nerves specialize in sending electrical signals to the brain, face, neck and torso.
Optic nerve comprises of nerve fibers in millions and sends visual messages to the brain for sight and is located at the top left of the labelling. The optic tract serves also for visual information to the lateral geniculate bodies and located at the bottom left while the optic chiasm at the right side of the diagram sends signal to the optic tract.
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can the biotic potential go above the graph or have to stay under
The biotic potential can go above the graph, but only for a limited period of time.
What is the biotic potential?
Biotic potential is the maximum reproductive rate of a population when there are no limiting factors such as resources, space, or competition. This rate is determined by the species' fertility, survival rates, and longevity. It is an important concept for population ecology because it can provide a measure of how quickly a population could theoretically grow, given ideal conditions.However, if the environment changes or the resources become scarce, the population size will decrease. Therefore, if the biotic potential goes above the graph, it is likely to be a temporary increase that will not be sustained in the long run.
What do you mean by Population?
Population is a term used to refer to the total number of people, animals, or other living organisms in a given area. It can be used to describe the size of a city, country, continent, or the world. Population can also refer to the total number of individuals in a specific group, such as a species or ethnic group.
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which one of these substances are pure substances iron, salt water, salt, air, oxygen?
Answer: iron and water are pure substances.
Answer:iron and oxygen
Explanation: