Answer:
True
Explanation:
This is because Cephalochordates are the recent ancestor of lancelets. They have muscle segmented Brook.The lancelets are mostly marine organisms that live in shallow, tropical and temperate oceans. The lack a well differentiated head region but they have brain region.
( HELP ME PLEASE!!!)
Which of the following characteristics is not part of natural selection?
A)lizards developing long legs in order to climb better to avoid floods
B)monkeys swinging from high tree branches in the rain forest
C) mice changing from dark brown to light brown to better hide from predators in the sand
D) sharks colored white on the underside and blue or gray on the top
Why is the tower much taller than the surrounding landscape
Answer:
Because a tower is made to look out at the surrounding area, it wouldn't be much use if it was a short tower.
Explanation:
That'll be one Brainliest
Atherosclerosis is a cardiovascular disease in which blood vessels can become blocked. How does
atherosclerosis affect blood flow?
a. blood flow is not related to vessel diameter
b. blood flow increases as vessel diameter decreases
c. blood flow decreases as vessel diameter decreases
d. blood flow is remains constant as vessel diameter changes
Explanation:
Answer B Blood flow increases as vessel diameter decreases
5. The cell fails checkpoint 2. It tries to repair its DNA, but can't. The cell performs apoptosis.
This statement is true for a [Select]
Answer:
False
Explanation:
Because it cant repair itself
which of the following produces more energy for the next trophic level?
A. humans
B. grasshoppers
C. snake
D. spiders
Why can enzymes be used over and over again
Answer:
Enzymes are biological catalysts. They catalyse biochemical reactions. They increase the rate of reaction. They do not chemically react or get utilised in the reaction so enzymes can be used over and over again.
Look at the image. Which two
bases bond together in DNA?
A. Adenine-Guanine
B. Adenine-Thymine
C. Adenine-Uracil
D. Adenine-Cytosine
Answer:
The answer is B, adenine and thymine
Answer:
its b
Explanation:
Please only respond if you know the answer and links will be reported
Krebs Cycle only i have to keep going
Answer:
Its D
Explanation:
Your friend claims that all mutations are harmful to living things. Do you agree or disagree with this claim?
Support your position with:
a description of a genetic mutation and
a scientific explanation of how a mutation may affect an organism such as a tomato, spinach, or strawberry plant.
Answer:
I disagree
Explanation:
Please don’t answer just for points if you don’t know and links will be reported
no links please!
Two ecosystems are compared in terms of population size and species diversity. One ecosystem has a large number of individuals but low species diversity, while the other ecosystem has fewer individuals but greater species diversity due to high mutation rates. Which of the following statements best describes how these two ecosystems would respond to an environmental stress such as drought?
The ecosystem with greater diversity is less dependent upon resources and would suffer less from the drought.
The ecosystem with greater diversity is more stable and would, therefore, be more likely to withstand the drought.
The ecosystem with more individuals is less likely to suffer because it is more productive and, therefore, more stable.
The ecosystem with more individuals is more likely to have members that are drought-resistant and will survive and reproduce.
Answer: I had the same problem in one of my exams. I think the answer is "the ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought.
Explanation:
I chose this because it seems like the most logical explanation.
"The ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought. Thus, option B is correct.
What is biodiversity?Biodiversity is considered as the variety of living things found in the various habitats, such as terrestrial, marine, and desert ones, as well as the ecological groups to which they belong.
The variety of the creatures present in an ecosystem, as well as their relative abundances, is referred to as biodiversity. It also depicts the various stages of organism organization.
In ecosystem there are thirteen different grass species present and in ecosystem Y 1 species of grass present, that is, ecosystem X has a greater amount of biodiversity. So, during the drought, the bison in ecosystem X are better able to survive.
Therefore, "The ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought. Thus, option B is correct.
Learn more about biodiversity here:
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Explain How the nitrogen cycle can be disrupted. PLEASE HELP DUE SOON!
Question 12 of 25
What is motion?
A. The shortest path from start to finish, coupled with a direction
B. The measurement of the force of gravity acting on an object
C. A change in the position of an object with respect to a reference
point
O D. A transfer of energy from one object to another
Answer:
C. A change in position of an object with respect to a reference point.
Answer: C
Explanation: I am currently taking the test
7.
How is the rate of transpiration affected by decreasing temperature and by decreasing light
intensity?
decreasing
temperature
decreasing
light intensity
A
slower
slower
B
slower
faster
С
faster
slower
D
faster
faster
Answer:
B
slower
faster
Explanation:
Which of the following is NOT true of a reaction that breaks a bond?
A. It creates low-energy products
B. It is what happens in cellular respiration
C. It is an endergonic reaction
Answer:
C
Explanation:
Endergonic reactions use energy to build bonds
Exergonic reactions release energy through breaking bonds
C. It is an endergonic reaction.
Endergonic v/s Exergonic:
In the exergonic reaction, the reactants are at a higher free energy level than the products (reaction goes energetically downhill) while In the endergonic reaction reaction, the reactants are at a lower free energy level than the products (reaction goes energetically uphill). Endergonic reactions use energy to build bonds while Exergonic reactions release energy through breaking bonds.When a bond breaks, it creates low-energy products.In cellular respiration, breaking of bond happens.Therefore, the statement which is NOT true for a reaction that breaks a bond is option C.
Learn more:
brainly.com/question/14698440
Pulmonary arteries transport ________.
A) oxygenated blood to the lungs
B) blood rich in carbon dioxide to the lungs
C) oxygenated blood to the heart
D) oxygenated blood directly to the aorta
No links or I'll report
Answer:
B
Explanation:
I would say this because the pulmonary circulation only transports deoxygenated blood. And this blood gets transported to the lungs so the lungs can absorb oxygen and release carbon dioxide. I am not sure about this one though. This is what I think.
Pulmonary arteries transport blood rich in carbon dioxide to the lungs also known as deoxygenated blood.
Blood Transportation:Arteries carry oxygenated blood in the body, and the pulmonary arteries carry deoxygenated blood to the lungs.The main pulmonary artery, or the pulmonary trunk, transports deoxygenated blood from the heart to the lungs.The main pulmonary artery branches into both a right and left vessel. The right pulmonary artery carries blood to the right lung. The left pulmonary artery carries it to the left lung.Thus, we can conclude that Pulmonary arteries transport deoxygenated blood from the heart to the lungs.
You can learn more about blood circulation here:
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What macromolecules are capable of self-replication?
Proteins
RNA and DNA
Polysaccharides
Fats and triglycerides
Answer:
B
Explanation:
RNA and DNA
Frederic Griffith used the word transformation to describe the changes in bacteria that he observed. Which is the most useful definition of transformation?
Answer:
A permanent change in the genetic composition of an organism
Explanation:
The experiment carried out by Frederick Griffith shows that bacteria are capable of transferring genetic information by means of a process called transformation.
Answer 3 questions please, thank you!
What resource below is not essential but is important to how we live our lives on Earth?
A. Water
B. Oxygen
C. Fossil Fuels
D. Plants
Which of the following is most important to cultivating food in order to sustain human growth?
A. Domesticating animals
B. Agriculture
C. Mining
D. Manufacturing
Which of the following involves making man-made products from natural resources?
A. Agriculture
B. Mining
C. Manufacturing
D. Urbanization
Answer: fossil fuels
Explanation: because we don’t need them but they help us life
A _______________ genotype has one capital and one lowercase letter.
Why does the earth have a magnetic field?
Answer:
QUESTION:
Why does the earth have a magnetic field?
ANSWER:
The magnetic field of Earth is caused by currents of electricity that flow in the molten core. These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. The powerful magnetic field passes out through the core of the earth, passes through the crust, and enters space.
Explanation:
Hope this helps you out! :)
Have a great rest of your day/night!
For a circular or square patch of habitat, the ratio of edge habitat to interior habitat __________ as the size of the patch decreases. View Available Hint(s) For a circular or square patch of habitat, the ratio of edge habitat to interior habitat __________ as the size of the patch decreases. decreases increases in square patches and decreases in circular patches increases remains unchanged increases in circular patches and decreases in square patches
Answer:
increases
Explanation:
Habitat is defined as a particular environment where a group of organisms normally lives. Some examples of habitat include, among others, forests, deserts, lakes, grasslands, etc. Moreover, an edge habitat refers to a habitat area that is in contact with another. This part of the habitat has ecological importance because it is used by many species in order to find food, refuge and rest. In the question above, it is expected that a greater number of smaller habitats increase edge habitat surface area when compared to the interior habitat area. The ratio between the edge habitat surface area and total habitat area may have a huge impact on entire ecosystems.
What is meant by natural variation in living things?
1.Different species have different attributes.
2.Different individuals within a species have variation because they may express
different alleles for the same traits.
3.All the possible trait variations of a single population
4.The number of organisms a given area will support.
Answer:
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
Mannitol is a drug that temporarily disrupts tight junctions. This drug is often added to medications that need to get into the extra-cellular fluid of the brain because it will make the capillaries of the ________ more permeable to larger molecules. Mannitol is a drug that temporarily disrupts tight junctions. This drug is often added to medications that need to get into the extra-cellular fluid of the brain because it will make the capillaries of the ________ more permeable to larger molecules. blood-brain barrier meninges ventricles arachnoid villi
Answer:
Mannitol is a drug that temporarily disrupts tight junctions. This drug is often added to medications that need to get into the extra-cellular fluid of the brain because it will make the capillaries of the blood-brain barrier more permeable to larger molecules.
Explanation:
The blood-brain barrier's components are endothelial cells, basement membrane, pericytes, and astrocyte endfeet. The gaps between endothelial cells are small. As a consequence, they form tight junctions that allow the passage of specific and small molecules. In this way, the barrier stops any pathogen from entering the brain. That is to say, that the blood-brain barrier is extremely selective; therefore, medications will not pass through it, so to allow the medicine to enter the brain extracellular fluid, the tight junctions of the endothelial tissue must be disrupted with mannitol.
Based on one of the four scenarios below, create an explanation for how Natural selection works, incorporating all of the 5 concepts that contribute to it.
1. Galapgos Darwin's Finches
2. Caribbean Anoles
3. Giraffe lab
4. In a field that is mostly green because of regular rain, the coat color of the mice species that lives there is mostly dark colors. Over a period of 10 years, there is a drought, and the grass has a lot more dead material, making the field have a much lighter over all color. What happens to the population of mice (coat colors) and why?
5. Make up your own scenario (tell me it) and then describe how natural selection would take place with changes.
Answer:
Population of mice having dark coat colors decreases by changing of features of natural selection.
Explanation:
The population of mice having dark coat colors decreases if the field has light colour due to drought conditions because they are vulnerable to their predators and natural selection. In green field, dark colour mice can't be seen by the predators that will leads to increase their population while on the other hand, if there is drought condition it will leads to increase the population of light colour mice because they can't be seen by predators and decreases the population of dark colour mice due to vulnerability to their predators. Food type availability to the organisms due to environmental conditions lead to natural selection of that organisms which can feed on that food type.
name any two equipment based on atmospheric pressure
An individual with a protein deficiency typically experiences increased susceptibility to illnesses, muscle and joint pain, and difficulty concentrating. Why does a protein deficiency cause such diverse symptoms? A.
because immune, nervous, and muscle system cells require proteins for structure and regulation
B.
because the only role of proteins is to provide the enzymes that all cells need to function
C.
because the membranes of immune, muscle, and nervous system cells consist entirely of proteins
D.
because proteins are the primary source of energy for many different cell types
I NEED HELP!!!
Answer:
A. because immune, nervous, and muscle system cells require proteins for structure and regulation.
Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?
A. The similarities suggest that chickens and humans are the direct descendants of modern-day fish with tails and gill slits.
B. The similarities suggest that vertebrates pass through each of the adult stages of their evolutionary history as they develop.
C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species.
D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slits.
Answer:
C
Explanation:
Answer: D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slits.
Explanation:
it's right
What test is used to determine if the parents are carriers for Prader Willi syndrome prior from pregnancy?
Answer:
Noninvasive Prenatal Screening (NIPS) also called Noninvasive Prenatal Testing (NIPT)
Explanation:
Population size can be regulated by a combination of reasons. Any cause for population growth to decrease is called a___________________. Question 9 options: carrying capacity density- dependent factor population growth factor limiting factor
I think density dependent factor
Answer:
its limiting factor I did the test goodluck
Explanation:
