Answer:
Before: (Darwin did) Physical features and behavior
Now:
DNA Testing
Explanation:
Similarities are often easy to see when one looks at two organisms that evolved from a common ancestor, and until recently, looking at physical features and behavior was the only way to determine how closely related two organisms are. However, now scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms. This method can also help when looks are deceptive. One example of looks being deceptive is: The bat and the crow both have wings, and the squirrel does not. From this, one may think that bats and crows are more closely related than bats and squirrels, while the opposite is indeed the case.
Question 7 of 10
What is the difference between a scientific law and a scientific theory?
O A. A scientific law has been proved with scientific evidence. A
scientific theory can change when new evidence is found that
does not support the theory.
B. A scientific law is supported by research. A scientific theory is only
an educated guess.
C. A scientific law describes how natural events happen. A scientific
theory is an explanation of natural events.
D. A scientific law involves mathematics. A scientific theory is a
description based on observations.
Answer: I belief its B. A scientific law is supported by research. A scientific theory is only an educated guess.
-Like theories, scientific laws describe phenomena that the scientific community has found to be provably true. Generally, laws describe what will happen in a given situation as demonstrable by a mathematical equation, where as theories describe how the phenomenon happens.
a cockroach is a fast-moving insect. how can an animal with an open circulatory system be so speedy?
Cockroaches have 6 legs and each leg has 3 knees, 18 knees in total. Since the cockroach has so many joints in its legs its can accurately pick up speed when running away from something
An animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.
What is an Open circulatory system?An open circulatory system may be characterized as a type of circulatory system in which blood vessels are completely absent and blood generally flows freely through the cavities of the body. This type of circulatory system is present in arthropods.
Due to the absence of blood vessels, the flow of blood is extremely high in animals that have an open circulatory system. Apart from this, in cockroaches, oxygen is carried out through the tracheal system because of the absence of the lungs. So, it makes the process so speedy.
Therefore, an animal like a cockroach with an open circulatory system is so speedy because in these organisms tracheal system delivers oxygen throughout the body.
To learn more about the Open circulatory system, refer to the link:
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distinguish between uric acid, urea and ammonia
Answer:
Explanation:
Ammonia is associated with aquatic animals; urea is associated with most terrestrial and semiterrestrial vertebrates, but rarely land invertebrates (Campbell et al., 1972); and uric acid is the major product of terrestrial invertebrates, birds and reptiles (Prosser & Brown, 1961).
why do all of the planets orbit in the same direction?
Answer:
Due to retrograde orbit.
Explanation:
Retrograde orbit means that it's orbiting the opposite way of the parent body; In this case, the sun is rotating counterclockwise, and retrograde orbit reverses the direction, clockwise.
Ribosomes are the site where— are produced.
Amino acids are coded for by triplet bases in RNA called—.
Answer:
Ribosomes are the site where proteins are produced. Amino acids are coded for by triplet bases in RNA called codons
Explanation:
Which statement is true?(1 point)
Hair color and IQ are examples of Mendelian traits.
Mendelian traits follows a normal distribution.
Mendelian traits are controlled by multiple genes.
Mendelian traits cannot be shown on a bell curve.
Answer:
A. Hair color and IQ are examples of Mendelian traits.
Explanation:
Answer:
Mendelian traits cannot be shown on a bell curve.
Explanation:
The anterior rami of spinal nerves ______ are called intercostal nerves because they travel in the intercostal space sandwiched between ______.
Answer: T1-T11; two adjacent ribs
Explanation:
The anterior rami of spinal nerves T₁ - T₁₁ are called intercostal nerves because they travel in the intercostal space sandwiched between two adjacent ribs.
What are the rami of spinal nerves?A typical spinal nerve typically branches out into rami as soon as it exits the intervertebral foramen.The smallest of the two main branches is the posterior (dorsal) ramus. It innervates the skin of the back as well as the deep muscles of the back, such as the transversospinalis and erector spinae. The bigger of the two main branches is the anterior (ventral) ramus. The anterior ramus divides into numerous additional branches that innervate the upper limbs, lower limbs, and anterior and lateral regions of the trunk. Numerous anterior rami develop into nerve plexuses.Learn more about rami of spinal nerves here:
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where does sperm production occur within the testis?
Answer:
seminiferous tubules
Explanation:
Sperm production happens in coiled structures known as seminiferous tubules.
What does the type of animals and plants brought to the New World demonstrate about the needs of Pre-Columbian civilizations
Answer:
The answer would be D because Pre-Columbian civilizations didn't have any domesticated animals such as cows, chickens, and horses. This fact limited the accessibility to meat for the Pre-Columbian civilizations.Explanation:
What is the role of chromosomes in the cell nucleus?
Explain in 5 - 10 sentences
Answer:
Chromosomes are tightly packed DNA and proteins. The DNA and proteins take on a tightly coiled structure within the chromosome. The chromosomes are then kept inside the nucleus. Their role is to carry basic genetic material. This provides the cell with genetic information that's used to carry out different cellular functions. These functions include survival, growth, and the ability to reproduce.
100!!! Points
Part A
Tectonic plate movement is the reason why northern California has a very different landscape than southern California. Two different tectonic plates, each moving in different directions, border the western side of the North American Plate. Use the map to identify the two tectonic plates that border the North American Plate to the west.
map of the world's major and minor tectonic plates
Part B
On the map, take a close look at the boundary along southern California and Mexico’s Baja California Peninsula. The arrows on the map show the direction and speed of the plates along this boundary in millimeters per year. Based on the speed and direction of the arrows, identify the type of plate boundary at this location. Which landforms or events are likely to occur there as a result? (Hint: It may be helpful to model the motion of the plates using your hands or pieces of paper.)
a map of North America with the fault lines marked
Answer:
Where's the map?
Explanation:
Greenhouse gases include carbon dioxide and methane.
Answer:
true
Explanation:
Based on this information, what is the minimum size of a codon for these hypothetical martian life-forms?.
Answer:
george is cute
Explanation:
Which of the following characteristics do homologous chromosomes exhibit?.
Homologous chromosomes carry alleles of the same traits and therefore, carry the genetic information for the same trait.
Homologous chromosomes are a pair of chromosomes with the same gene sequence but of different origins - one paternal and the other maternal.
Thus, homologous chromosomes carry the same traits, although could be of different forms. For example, one of the chromosomes might carry a gene for tallness while the other might carry a gene for shortness even though both tallness/shortness represent a gene for height.
More about homologous chromosomes can be found here: https://brainly.com/question/22613446?referrer=searchResults
!!!!NEED HELP NOW!!!!
Describe the structures within cells that govern heredity, and describe where they are located. Make sure to have 5 sentences which have to be all on topic use great grammar along with great vocabulary usage.
!!PLEASE ANSWER CORRECTLY!!
Answer:
The structure that is responsible for the governance of a cell is the DNA, which is located in the nucleus of the cell.
Explanation:
DNA: It is the genetic material containing genetic information.It is present in the chromosomes inside the nucleus. The genetic information of DNA is stored as code in the four nucleobases namely Adenine, Guanine, Cytosine, and Thymine. The most unique feature of the DNA is that it is self-replicated and makes similar copies of itself. DNA is a double helical structure found in all living organisms including some viruses.In Eukaryotes along with the nucleus, DNA is also present in Mitochondria and Chloroplasts.For more information:
https://brainly.com/question/13695548
Organic phosphate is taken up by producers during photosynthesis and released by cellular respiration.
True or false ?
Answer:
true
Explanation:
pa brainliest po please
#carryonlearning
Which part of the vascular system functions as a blood reservoir and contains over 60% of the body's blood
Answer:
Veins are also called capacitance vessels because they contain 60% of the body's blood volume.
Explanation:
Hope I could help.
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Which of these is a product of anaerobic rrespiration
Which genetic disorder is this karyotype for?
cystic fibrosis
Down syndrome
sickle cell anemia
hemophilia
Glucose plus glucose with what makes maltose and water.
Answer:
In the dehydration synthesis reaction depicted above, two molecules of glucose are linked together to form the disaccharide maltose. In the process, a water molecule is formed.
Explanation:
this is copied so be careful but hope it helps
Potato Osmosis Lab
Perform the calculations for the following on a separate sheet of paper:
-300 mL of 0.0 M sucrose solution
-300 mL of 0.2 M sucrose solution
-300 mL of 0.4 M sucrose solution
-300 mL of 0.6 M sucrose solution
-300 mL of 0.8 M sucrose solution
Answer:
- 102.6 g
-205.2 g
- 41.04 g
- 61.56 g
- 82.08 g
Explanation:
Hello there?I have attached the calculations for the above answers in the images above.I hope it helps you out to understand better.
organisms composed of one or more cells are known as
Answer:
multicellular organisms
Explanation:
Multi means many or more than one and so multicellular literally means many cells.
Hope this helps!
Which butterfly-shaped portion of the brain is responsible for spinal reflexes?
Answer:
b. Gray matter
Explanation: is correct
(vii) All the activities of a cell is controlled by?
Answer:
nucleus
Explanation:
The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid).
https://www.britannica.com › list › 6...
propulsion of a sperm cells occurs due to ___________and It gets energy from____________/_
Answer:
propulsion of a sperm cells occurs due to the sperm's tail containing a large number of proton channels called Hv1 and It gets energy from the seminal plasma.
Explanation:
What is the process called when cells break off of an original tumor and create new cancer sites?
OOOO
benign
malignant
metastasis
biopsy
Answer:
metastasis is your answer fits the description of host sitr to new site
3. Compared to the wavelength of ultraviolet radiation,
the wavelength of infrared radiation is
A) shorter
B) longer
C) the same
Answer:
the correct answer is Longer
Explanation:
hope this helps
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The Correct choice is ~
LongerCompared to the wavelength of ultraviolet radiation,
the wavelength of infrared radiation is longer
Coughing, oils in skin, cilia that
sweep out invaders, saliva
chemicals, and stomach acid are
all a part of which type of immune
system defense?
Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation: brainlieast...?
Answer:
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Explanation:
i hope that helps. have a great day!! :)
the two organs that play an important role in maintaining acid-base balance are the
Answer:
the lungs and kidneys.
Explanation:
describe an experiment to show that translation takes place through the phlome vessels
pls help!!! need now pls a bit confused with my homework
Answer:
Mechanism, Evidence ... - Toppr
Mechanism, Evidence ... - TopprThe transportation occurs in the direction of the source to sink. Transport of organic solutes from one part of the plant to the other through phloem sieve .
