63. Considered the "Father of Taxonomy". His classification system was built on visible characteristics and is still used today. Kingdom, Phylum, Class, Order, Family, Genus, Species
a. Aristotle b. Linnaeus c. Woese
Answers
Related Questions
how the cremaster and dartos muscles are able to contract and relax
Answers
The cremaster and dartos muscles are two muscle layers responsible for the elevation and relaxation of the testicles. These muscles help in regulating the temperature of the testicles by regulating their distance from the body. The cremaster muscle is located in the spermatic cord and is a thin muscle layer that surrounds the testicle.
It extends from the pubic bone and pulls the testicle up towards the body when it contracts. The cremaster muscle responds to the changes in temperature and stimulation, and the scrotum skin is sensitive to external stimuli such as cold, touch, and vibration.The dartos muscle is a smooth muscle layer found in the scrotal skin. It is responsible for wrinkling the skin and reducing the surface area of the scrotum to maintain the heat. It is also responsible for relaxing the scrotum during ejaculation. The smooth muscle layer of the dartos muscle is supplied by the sympathetic nervous system.
This means that its contraction and relaxation are controlled by the autonomic nervous system. The sympathetic nervous system triggers the dartos muscle contraction, and it relaxes the muscle to lower the scrotum's temperature. Both the cremaster and dartos muscles are important in regulating the temperature of the testicles. The cremaster muscle pulls the testicle up when it is cold to keep it warm, while the dartos muscle reduces the scrotum's surface area to reduce heat loss.
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The first line of defense involves which structure(s)?
T-cells
skin
blood
B-cells
Answers
Answer:
option 2, skin
Explanation:
Answer:
b skin
Explanation:
I have no clue and the internet doenst help
Answers
Answer:
Soda
Explanation:
These are some weird questions...
I would say the canned soda since machines do most of that work anyway, while things like livestock need more human interaction, meaning more work needs to be done.
Some organisms are very successful because
Select one:
a. they can reproduce rapidly
b. they can reproduce both asexually and sexually
c. they are varied genetically
d. the species population is large.
Answers
Why are stains used in prepared slides such as the ones you used in this lab?
Use complete sentences.
Answers
Answer:
he most basic reason that cells are stained is to enhance visualization of the cell or certain cellular components under a microscope. Cells may also be stained to highlight metabolic processes or to differentiate between live and dead cells in a sample.
Explanation:
________ are the individual building-block molecules that make up nucleic acids.
Answers
Nucleotides are the individual building-block molecules that make up nucleic acids.
Nucleotides consist of three main components: a sugar molecule (ribose or deoxyribose), a phosphate group, and a nitrogenous base. The four types of nitrogenous bases found in nucleotides are adenine (A), guanine (G), cytosine (C), and thymine (T) in DNA or uracil (U) in RNA.
These nucleotides are joined together through phosphodiester bonds to form polynucleotide chains, which make up DNA and RNA molecules. The specific sequence of nucleotides in these chains carries the genetic information necessary for protein synthesis and other cellular processes. Nucleotides play a crucial role in the structure and function of nucleic acids, including DNA and RNA. The specific sequence of nucleotides within these chains carries the genetic information necessary for various cellular processes, including protein synthesis. The sugar molecule, either ribose or deoxyribose, provides the backbone of the nucleotide.
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as the light intensity is increased the rate of photosynthesis is:. (A) increase. (b) decreased (C) same (D) none of these
Answers
Answer: Not 100% sure, however I think that the correct answer is A (increased).
In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into separate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water.
consistency;
testability;
Tentativeness;
Answers
Answer:
i think is b
Explanation:
but not sure
hope this helps
Which of the following is a population?
a) a wolf eating a squirrel
b) a hibernating bear
c) a school (group) of fish
d) a boy playing with his pet dog
Answers
Answer:
c) a school (group) of fish
Explanation:
A population is a distinct group of individuals. A wolf eating a squirrel is just part of the food chain, a hibernating bear is alone, so it couldn't count as a population, and a boy playing with his pet dog, that's just a duo, and they aren't the same species.
Which of the following regulatory mechanisms is considered faster than the others? (a) feedback Io inhibition (b) enzyme induction (c) enzyme repression (d) b &c
Answers
The regulatory mechanism considered faster than the others is (a) feedback Io inhibition.
Feedback inhibition, also known as feedback regulation or allosteric regulation, is the fastest regulatory mechanism among the given options.
This process allows an enzyme's activity to be rapidly modulated based on the concentration of specific substrates or products.
In feedback inhibition, the final product of a metabolic pathway binds to an allosteric site on the enzyme that catalyzes the first reaction in the pathway, causing a conformational change that reduces the enzyme's activity.
This mechanism helps maintain appropriate levels of the final product and prevents overproduction.
Since this process occurs directly on the enzyme and is based on the concentration of substrates or products, it happens quickly and provides rapid control over the enzymatic reactions.
Enzyme induction (b) and enzyme repression (c) are both slower regulatory mechanisms that involve changes in gene expression to increase or decrease the synthesis of specific enzymes.
These mechanisms require the synthesis of new proteins and thus take longer to regulate enzyme activity compared to feedback inhibition.
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population of bacteria is growing according to the equation P(t)=1000e0.12t, where P(t) is the population and t is the time in hours. Estimate when the population will reach 5000 . Round to the tenths. Provide your answer below:
Answers
The estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.
To estimate when the population will reach 5000 bacteria, we can set up the equation P(t) = 5000 and solve for t.
The given equation for population growth is P(t) = 1000e^(0.12t). To solve for t, we can substitute 5000 for P(t):
5000 = 1000e^(0.12t)
To isolate the exponential term, we can divide both sides of the equation by 1000:
5 = e^(0.12t)
Next, we can take the natural logarithm (ln) of both sides to remove the exponential:
ln(5) = ln(e^(0.12t))
Using the property of logarithms, ln(e^(0.12t)) simplifies to 0.12t:
ln(5) = 0.12t
Now, we can solve for t by dividing both sides by 0.12:
t = ln(5) / 0.12
Using a calculator, we find that ln(5) is approximately 1.6094. Dividing this by 0.12 gives us an approximate value for t:
t ≈ 1.6094 / 0.12 ≈ 13.4117
Rounding to the tenths place, the estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.
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Which factor is not an environmental cost of clearing tropical forests? group of answer choices
Answers
The factor which is not an environmental cost of clearing tropical forests is (a) increased biodiversity.
Tropical forests are the wet places that receive high rainfall. Their temperatures ranges from 21°C-35°C. They are found at the areas lying between the Tropic of Cancer and tropic of Capricorn. However, the quality of the soil of tropical forests is low.
Biodiversity is the variety of life forms present in an area. These life forms range from the smallest microbes to the largest plant and animal species. There are three types of biodiversity: genetic, species, and ecosystem diversity. Rich biodiversity is important to keep a region functional
The question in incomplete. The complete question is:
Which factor is not an environmental cost of clearing tropical forests?
a. increased biodiversity
b. increased soil erosion
c. increased air pollution
d. increased flooding
e. accelerating global warming
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Which of the following do Meiosis and Mitosis have in common?
A.
They are considered to be reduction divisions as the processes result in additional cells.
B.
The genetic composition of the daughter cells is identical to the parent cell.
C.
In both processes the DNA replicates during interphase.
Answers
Answer:
it c for sure
Explanation:
The
of the cell direcs cell activity and ads like the control center.
Answers
Answer:
unable to understand ur question,,,
Explanation:
sry dear!
Answer:
The nucleolus✔ of the cell directs cell activity and acts like the control center.
Explanation:
Hope this helps you :D
In the carbon cycle, carbon dioxide and water are converted to glucose and oxygen by ________. Group of answer choices
Answers
Answer:
Photosynthesis
Explanation:
In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.
Planetary systems form from the combination of many small collections of matter into large, massive spheroids. Which statement correctly describes how the
small particies of matter combine at the beginning of this process?
Answers
At the beginning of the process of planetary system formation, small particles of matter combine through a process called accretion.
This process involves the gradual accumulation of particles due to their mutual gravitational attraction. Initially, these particles are tiny, such as dust or small rocks, but as they collide and merge, they gradually grow in size. Over time, the growing spheroids of matter continue to attract more and more particles, creating increasingly larger and more massive objects. As the spheroids grow, they begin to take on a more spherical shape due to the force of their own gravity. Eventually, these spheroids become massive enough to clear their orbits of other debris, forming the planets and other objects that make up a planetary system. This process of accretion and spheroid formation is believed to be the key mechanism by which the vast majority of planetary systems in the universe are formed.4
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Small bits of matter combine during the start of the formation of planetary systems in a process known as accretion.
Due to the gravitational attraction between the particles, this process entails the steady accumulation of particles. These particles start out little, like dust or tiny rocks, but as they collide and mix, their size progressively increases. Over time, the growing spheroids of matter continue to attract more and more particles, creating increasingly larger and more massive objects. As the spheroids grow, they begin to take on a more spherical shape due to the force of their own gravity. Eventually, these spheroids become massive enough to clear their orbits of other debris, forming the planets and other objects that make up a planetary system. This process of accretion and spheroid formation is believed to be the key mechanism by which the vast majority of planetary systems in the universe are formed.
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Read the scenario.
even though scorpions are related to spiders, there are many differences between the two organisms. one difference is that scorpion
young do not hatch from eggs as spiders do. scorpions are born live, two at a time, and they immediately crawl onto the mother's back
for protection and care. they remain there for two weeks as they grow big enough to take care of themselves.
how do the number of chromosomes in a female scorpion's egg cells compare with the number in her somatic cells?
there are twice as many chromosomes in egg cells.
o the number of chromosomes is the same in both.
o the number of chromosomes depends on the size of the scorpion
o there are half as many chromosomes in egg cells.
Answers
Answer:
there are half as many chromosomes in egg cells.
Explanation:
Which characteristic best distinguishes these cells as either prokaryotic or eukaryotic
Answers
Characteristic best distinguishes from prokaryotic to eukaryotic is that eukaryotic cells have a definite nucleus comprising the cell's genetic material, while prokaryotic cells don't have a nucleus and have free floating genetic material.
Some other differences includes Eukaryotes have membrane bound organelles while prokaryotes do not have membrane bound organelle. Prokaryotes have comparably less DNA then eukaryotes cells. Eukaryotic chromosomes are linear while prokaryotic chromosomes are circular. Prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes. All plant cells and animal cells are eukaryotic in nature .
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please help me
If animal cells don’t have chloroplasts, how do they obtain energy?
Answers
Answer:
Plants don't get their sugar from eating food, so they need to make sugar from sunlight. ... Once the sugar is made, it is then broken down by the mitochondria to make energy for the cell. Because animals get sugar from the food they eat, they do not need chloroplasts: just mitochondria.
They obtain their energy through the proteins the host (animal) consumes.
Hope this helps
Do you have the answer
Answers
Answer:
A sun shine
Mark me the brainlest
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Answers
PLEASEEE HELP ASAP! BRAINLIST GETS 80 POINTS!!!!!!!!!!
04.02 Environmental Resources Lab Report
Instructions: For this lab, use the lab report to record your information. You will submit your completed lab report.
Note: If you cannot complete this lab as directed, please contact your instructor for assistance.
Name and Title:
Include your name, instructor's name, and date.
Introduction
To improve your soil, you should first know what you’re starting with. In this lab, you will sample local soil to determine its composition and pH range.
Materials
• Distilled water
• Metric ruler
• Small zipper storage bag
• Soil from the yard, garden, or other local source
• Jar with tightly fitting lid (tall and skinny would be best)
• Small digging tool
• pH strips (available at hardware and pool supply stores) or vinegar and baking soda
Pre-lab Questions
1. Describe soil particles (sand, silt, and clay) in term of size and texture.
2. If soil is too acidic, what substance is usually added? If soil is too alkaline, what substance is usually added?
3. Why are soil composition and pH important to know?
Hypothesis
Predict what type of soil you think is in your local area (mostly sand, silt, clay, or mixed) and if it more acidic, more alkaline, or neutral.
Procedure
Obtaining soil samples for your jar and resealable bag
1. Take your jar, resealable bag, and digging tool into your garden or yard. Use the digging tool to dig a hole 3–6 inches deep. Take your soil sample from the soil at this depth.
2. Place approximately one cup of soil into the resealable bag, squeeze the air out of the bag, and zip it shut (you will use this soil later in the lab).
3. Dig up additional soil and fill the jar to approximately 1/4 full of soil. Take everything back inside to your work area.
Note: To avoid making a mess, it is best to work on a covered surface (for example, a kitchen counter covered with old newspaper or plastic wrap).
4. Fill the remaining space in the jar with water, and screw the cap on tightly (see Figure 1, below).
5. Shake the jar so that the dirt is totally dispersed through the water (see Figure 2, below). Set down the jar and allow the shaken contents to settle completely (see Figure 3, below). Leave it undisturbed overnight while you test the texture and pH of the soil in your resealable bag.
Note: Do not pick up the jar. Doing so will begin to mix the contents again.
Figure 1 Figure 2 Figure 3
Fill jar 3/4 full of water and 1/4 full of soil. With the lid on tightly, shake the jar well until the soil and water have mixed thoroughly. Let the jar sit. Materials will begin to settle out and form layers.
Testing texture and pH of the soil in your resealable bag
1. While you wait for the soil and water sample to settle in the jar, you can test the texture of the sample in the resealable bag. First, remove a small amount and moisten it slightly to test the texture. Record your observations in the Data and Observations section.
a. Rough and gritty soil that barely sticks together is sand.
b. Loams (mixtures of clay, silt, and sand) feel medium-textured.
c. Smooth and sticky fine textures indicate clay.
2. Next, test the pH using one of the following methods:
a. If you have pH strips: To test with pH strips, place the soil sample in a small bowl or container and add a small amount of distilled water. Add just enough water to make the soil slightly liquid, like a milkshake consistency. Dip the pH strip in and compare it to the color identification provided with the test strips. Record your data in the Data and Observations section.
b. If you do not have pH strips: Use vinegar and baking soda instead. To do this, split the sample into two containers. Add a half cup of vinegar to the first sample of soil, mix gently, and watch to see if it bubbles or fizzes. If it does, it is alkaline. In the second container, add a half cup of distilled water to the soil and mix gently. Then add a half cup of baking soda. If there is a reaction of bubbles or fizzing, the soil is acidic. If neither sample has a reaction, the soil is neutral. Record your data in the Data and Observations section.
Testing soil sample in your jar
1. For the sample in the jar, wait until after the contents have settled and you can see several different-colored layers. In addition, you may see some material floating at the top of the water. You may also see that the water is still clouded with some particles.
2. Measure the total thickness of the soil in the jar after it settles. Record this measurement (in centimeters) in the data table.
3. Observe the settled dirt carefully. There should be distinct layers of soil. The bottom will be your sand layer (largest particles fall out first), then clay or silt, depending on the kind of soil you have. Carefully measure the thickness of any layers of soil seen in your jar. Record your measurements in centimeters (cm) in the data table. Also record the color of each layer.
Answers
Arrange the order of events in the fatty acid (FA) metabolism pathway in the correct order:1) The modified FA is transported across the inner membrane of the mitochondrion.2) Dehydration occurs to generate an α,β-unsaturated FA.3) The free FA is converted to acetyl CoA ester.
Answers
The correct order of events in the FA metabolism pathway is critical to understanding how our bodies convert food into energy through the action of the mitochondrion.
In the fatty acid metabolism pathway, the correct order of events is as follows: First, the free FA is transported across the inner membrane of the mitochondrion. Then, dehydration occurs, which generates an α,β-unsaturated FA. Finally, the modified FA is converted to acetyl CoA ester. The mitochondrion plays a crucial role in this process as it is where the FA is transported across the inner membrane and where the modified FA is converted to acetyl CoA ester. Metabolism is the process by which our bodies convert food into energy. The mitochondrion is the powerhouse of the cell, responsible for producing ATP, the energy currency of our bodies. In FA metabolism, the mitochondrion is essential as it facilitates the conversion of the FA to acetyl CoA ester, which can then enter the citric acid cycle and generate ATP.
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What do biologists call a virus
that infects bacteria?
A
DNA
B
a bacteriophage
Answers
Answer:
Bacteriophage
Explanation:
In a newspaper editorial, a writer states that research on human embryonic stem cells is valuable and worthwhile. Which describes the most common argument against the writer's statement?A.In a scientific argument, some physicians argue that stem cells are not likely to be part of any beneficial application or medical treatment.B.In an economic argument, some experts argue that the benefits of stem cells are not worth the high cost of developing and implementing the research.C.In a scientific argument, some researchers argue that the goals of stem cell research would be easier to achieve by other means.D.In an ethical argument, some people argue that human embryonic cells should be protected.E.In a philosophical argument, some people argue that stem cell therapy would change the personality or identity of the person receiving it.
Answers
In my experience the answer would be:
"In an ethical argument, some people argue that human embryonic cells should be protected."
Because as with abortion, the general idea is that stem cells or embryos have life and must be protected. Therefore, there are many people against stem cell therapies. However, in the scientific community, stem cells are not considered conscious organisms.
describe the function of the cranial meninges including the role of any specific meningeal structure.
Answers
The function of the cranial meninges is to protect the brain by providing a barrier against infections and physical injury. The cranial meninges consist of three specific layers: the dura mater, arachnoid mater, and pia mater.
The dura mater is the outermost layer and is composed of tough, fibrous connective tissue. It provides structural support to the brain and acts as a barrier against external forces. The dura mater also contains veins that drain blood from the brain and help maintain pressure levels within the cranium.
The arachnoid mater is the middle layer and is a thin, delicate membrane. Its primary function is to cushion the brain, providing a buffer between the dura mater and pia mater. The arachnoid mater contains the subarachnoid space, which is filled with cerebrospinal fluid (CSF) that helps to protect and nourish the brain.
The pia mater is the innermost layer and closely adheres to the surface of the brain, following its contours. It is a thin, transparent membrane that supports the brain's blood vessels and helps to provide nutrients and oxygen to the brain tissue.
In summary, the cranial meninges play a crucial role in protecting the brain from infections and injury, while also providing structural support and maintaining proper brain function.
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Share your thoughts about how hard/easy to spot Bad Science and
Pseudoscience articles
Answers
I HOPE THIS HELPS
What type of rock will you find near the mouth of a river?
Answers
Answer:
I believe the answer is a sedimentary rock
15. In another experiment, a scientist puts yeast with both glucose and galactose as a nutrient source.
Predict how the yeast would use the nutrients, and justify your prediction with evidence from the experiment completed in
this activity.
Answers
Answer:
Fermentation occurs in glucose whereas no fermentation occurs in galactose.
Explanation:
Yeast will use the nutrients such as glucose and galactose from the process of respiration. Yeast will break down the nutrients with the help of oxygen produces high amount of energy. This energy is used by the Yeast for their growth. In the presence of yeast glucose quickly undergoes fermentation while no fermentation occurs in the medium having galactose.
explain the secondary sexual growth in both male and female.
Answers
Answer:
Although the question is pretty simple,the answer,I'm afraid, could occupy a whole volume of a book.
But very simply put the secondary sexual growth in males is under the influence of testosterone. Males also produce estrogen but in very small amounts,which makes the effect of estrogen very minimal and almost negligible.
Sexual growth in females is under the influence of estrogen and then progesterone.
In both cases,the physiological process is quite similar:
At puberty in males,the hypothalamus produces gonadotropin releasing hormones which causes the anterior pituitary lobe to produce leutinizing hormones(LH) and follicle stimulating hormones(FSH). LH acts on leydig cells in the seminiferous tubules of the testes to produce testosterone and FSH acts on the Sertoli cells in the seminiferous tubules of the testes to produce androgen binding proteins(ABP). Together testosterone and ABP cause sperm production.
At puberty in females, ,the hypothalamus produces gonadotropin releasing hormones which causes the anterior pituitary lobe to produce leutinizing hormones(LH) and follicle stimulating hormones(FSH). FSH causes growth of the primordial follicle into a mature Graafian follicle while LH presence causes exocytosis of the mature oocyte (ovulation) in about 48hours.