1.
One hundred lab rats were used in a controlled study to determine the effect of aspirin on the frequency of heart
attacks. Fifty rats were each given a daily injection containing 40 mg of aspirin for a period of 1 year. On a daily
basis, each of the other 50 rats would most likely receive an
Answer:
The other 50 would probably not receive aspirin because you need a control group.
Explanation:
Which group of organisms had to be reclassified?
Hump Back Whale
Domesticus passer
Canis familiarise
Mallard Duck
Answer:
Mallard Duck
Explanation:
What is the difference between a woody and herbaceous plant
Answer:Woody plants have stems that live for several years, adding new growth (height and width) each year. Woody plants may be classified as trees, shrubs or vines and may have evergreen, semi-evergreen or deciduous leaves. Herbaceous plants have stems that die back to the ground each year.
Why isn’t iron used to make coins??
Answer:
It easily becomes rusty.
Explanation:
My best guess is that being a ferrous metal, it is subject to rusting.
6. How are cubs raised within the pride?
Answer:
In a pride, lions hunt prey, raise cubs, and defend their territory together. In prides the females do most of the hunting and cub rearing. Usually all the lionesses in the pride are related—mothers, daughters, grandmothers, and sisters. Many of the females in the pride give birth at about the same time.
The cubs are born outside the pride. But as they grow, the male lion hunts prey delivers the food and raises cubs. Female lion also performs the activity of hunting in order to rear cubs.
What are Cubs?Cubs may be defined as the young offspring of the lion which usually require parental care.
During this time, the lioness keeps their cubs hidden from all forms of animals as well as her own pride in order to ensure the security of their cubs.
As time passes, cubs transform into adults. Now it is the time when a male lion, female lion, and adult cubs defend their territory together.
Therefore, it is well described above.
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Joint movement occurs around an axis that is always ____ to its plane.
Answer: perpendicular
Explanation: Joint can be found in areas of the body where two or more bones are connected together, practical examples in the human body can be traced to our elbow, wrist, hip, knee. At Each of these points mentioned, it could be observed that it serves as a meeting point for two or more bones which are linked and formed around an axis. This joints enables us to conveniently move, twist our rigid bones in different directions perpendicular to the plane (that is in a direction opposite or away from the direction of the plane).
are there any distinct difference between plant and animal cell? if yes what are they
Answer:
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
Explanation:
Which statement is an example of a scientific theory? A. Hummingbirds do not like the color white because they visit other colored flowers more often. B. All living organisms are composed of one or more cells, which came from pre-existing cells. C. The amount that caffeine affects a person's heart rate differs based on the person's age. D. The Earth is the third planet from the Sun and has one moon, which orbits the Earth.
Answer:
I'd say A. Hummingbirds do not like the color white because they visit other colored flowers more often.
Explanation:
Which term describes one kind of movement of Earth? A.)eclipse B.)revolution C.)tilted orbit D.) lunar cycle
WILL BE THE BRAINLEST
Answer:
B.) revolution
Explanation:
an eclipse is an event that involves the sun
a lunar cycle is an event that involves the moon
a tilted orbit is what the earth does around the sun
a revolution is the complete rotation of the earth around the sun (365 days)
Answer:
b baby
Explanation:
How do ecosystems get sick
Ecosystem condition can vary as a result of fire, flooding, drought, extinctions, invasive species, climate change, mining, overexploitation in fishing, farming or logging, chemical spills, and a host of other reasons.
i need help ASAP BRAINLIEST 30 POINTS!!!!!!!!!!!!!!!!
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Is Euglena a unicellular or multicellular?
Answer:
Euglena is unicellular.
Explanation:
Euglena belong to the kingdom Protista, and this kingdom is categorized as unicellular beings.
A scientist wants to know if giving caffeine to rats will help their ability to solve a maze. The scientist has 100 rats run the maze without giving them caffeine first. Then the scientist has 100 rats run the maze after they have been given a drink with caffeine.
What is the independent variable in this experiment?
What is the dependent variable in this experiment?
Which element is found in proteins and nucleic acids but not in
carbohydrates?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Carbon
Answer:
Nitrogen
Explanation:element found in all organic compounds carbon
element found in proteins but not carbohydrates or lipids nitrogen
three parts of a nucleotide phosphate, sugar, base
element found in nucleic acids, but not proteins, carbs, or lipids phosphorus
1. What type of study has as its goal to find the differences and similarities among items?
-observational
-comparative
-cause and effect
-relational
Answer:d
Explanation:
Answer:
The answer would be comparative.
Explanation:
when you try and find differences and similarities between a multitude of things it's a compare and contrast relation.
In the word search below are the names of several pieces of lab equipment. As you find each piece of equipment, record its name on the list.
There are only 13 words out of the listBunsen burner,Pipestem triangle, Evaporating dish, Beaker, Utility clamp,Iron ring, Mortar and pestle, Crucible and cover, Gas bottle, Saftey goggles,Corks, Watch glass, Erlenmeyer flask, Wire gauze, Pipet, Buret,Triple beam balance, Test tube rack, Funnel, Scoopula,Well plate, Wire brush,File,Wash bottle, Graduated cylinder,Thanks
A crossword is a word puzzle that usually takes the form of a square or a rectangular grid of white- and black-shaded squares.
The answer to the crosswords are as follows:-
Bunsen Burner - second last line Pipestem triangle- third-row diagonal Evaporating dish- fifth row diagonal Beaker -second rowUtility clamp - seventh row Iron Ring - second last column Mortar and pestle - afifth column Crucible and cover - tenth row diagonal Gas bottle - Last line Safety goggles - Fifth column Corks - besides the word thermometer Watch Glass - Seventh column inverted Wire gauze - second lineCrosswords strengthen the vocabulary and spelling of students and adults alike. A larger vocabulary, in turn, can increase your processing speed and your abstract thinking
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Which of the following rock types would be more likely to have a course grained texture
Answer:
granite
Explanation:or basalt
please thanks this answer by pressing the heart
What are 2 important influences on enzymatic activity? What happens when these factors are significantly altered?
how do you know something is science
Answer:
Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. ... Evidence. Experiment and/or observation as benchmarks for testing hypotheses.
Explanation:
a word meaning not water soluble or having an aversion to water
Answer:
The correct answer is - hydrophobic
Explanation:
Hydrophobic is the word that is used to the substances or solution having an aversion to the water or not soluble only in the water. This is the property of a substance with a molecule repels with the molecules of water.
Hydrophobic nature is simply fear of the water or not to mix with water. This property is due to the different nature of the molecules of the substance like polarity and no polar nature.
Thus, the correct answer is - hydrophobic.
An experiment in which only the variable the manipulated variable, is changed at a time is called an
Answer:
An experiment in which only one variable is manipulated at a time is called a controlled experiment.
Explanation:
does air have cells
In what stage of meiosis is crossing over most likely to occur?
Prophase I
Anaphase II
Metaphase I
Prophase II
Answer:
Prophase I
Explanation:
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I.
By meiosis II, only sister chromatids remain and homologous chromosomes have been moved to separate cells. Recall that the point of crossing over is to increase genetic diversity. If crossing over did not occur until sometime during meiosis II, sister chromatids, which are identical, would be exchanging alleles. Since these chromatids are identical, this swap of material would not actually change the alleles of the chromatids.
Hope this helps out!
Which of these changes would most likely lead to exponential growth in
population?
an increase in the predation on the population
a decrease in the habitat size of the population
an increase in the amount of food available to the population
a decrease in the amount of water available to the population
Answer:
It is an increase in available food amount.
Explanation:
An increase in predators would result in the prey species dying off. A decrease in habitat size would result in the species not having a place to live or hide from predators. A decrease in amount of available water would make the species die of dehydration.
The prey species would disappear as there would be more predators. The species wouldn't have a place to reside or hide from predators if the habitat's size shrank.
What is the exponential growth?If the amount of water available decreased, the animal would become dehydrated and die.
An exponential function's curve is created by a pattern of data called exponential growth, which exhibits higher increases over time.
Linear growth, which is additive, and geometric growth can be contrasted with exponential growth, which is multiplicative.
Therefore, The prey species would disappear as there would be more predators. The species wouldn't have a place to reside or hide from predators if the habitat's size shrank.
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Pericardial means "pertaining to ________ the heart."A) withinB) belowC) aroundD) in front of
Answer:
[tex]\boxed{\tt C. \ Around }[/tex]
Explanation:
Let's break down the word.
Pericardial = peri- cardi - al
Peri-: (prefix) = around
Cardi: (root) = heart
-Al: (suffix) = pertaining to
Put the definition together.
Pericardial = pertaining to around the heart.
Therefore, the correct answer is C. Around
What explains the behavior of natural phenomena?
Answer:
The sceintific law explains the behavior of natural phenomena.
Explanation:
Natural Phenomena is simply any phenomena that is not controlled by humans, or is only controlled by the earth. Some examples include: Weather, fog, thunder, tornadoes; biological processes, decomposition, germination, physical processes, wave propagation, erosion, tidal flow, moonbow, blood moon.
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what property of water allows the pure water to stick to the penny?
Answer:
This cohesion property results in surface tension. Because water molecules at the surface of the water puddle attract more to one other than they do to the air molecules above them, they cling together and form a dome shape on the coin. Surface tension prevents the water molecules from falling out and spilling.
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PLEASE HELP: How are larger macromolecules formed from atoms of smaller macromolecules? (this is due today and i need help pls) >:)
Answer:
Larger macromolecules are formed from the building blocks or single subunits called monomers joining together.
Explanation:
Larger molecules are sometimes called polymers and they are formed from single sub units or smaller molecules or building blocks called monomers covalently joined together.
The monomers then join with each other through covalent bond to form larger macromolecules called polymers and during the combination, water is released as the byproducts.
Answer:
Macromolecules are composed of the polymers formed by the linking of the smaller molecules called monomers. The monomers in a polymer are made up of almost or the same similar molecules linked over again multiple times through different combinations to form the large macro-molecules.
Explanation:
15. Proteins are super important because they contain
Answer:
Hair and nails are mostly made of protein. Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage, skin, and blood.
Explanation:
Answer:
Proteins contain amino acids
Explanation:
Amino acids combine to create proteins.
suggest why a 16 years old boy needs more energy than a 16 years old girl
Active teen boys have a larger daily calorie requirement. When they turn 12, active boys need about 2400 calories a day. That increases by 200 calories each year, the requirement peaks at 3200 calories between the age of 16 to 18 years old. An active girl, however, only needs about 2,000 - 2,500 calories.
