Some animals have adaptions to their circulatory system that enable them to transfer heat from arteries to veins, warming blood returning to the heart. This is called a countercurrent heat exchange; it prevents cold venous blood from cooling the heart and other internal organs.
Which of the following elements is the most reactive?
A. Beryllium
B. Calcium
C. Magnesium
D. Barium
Answer:
B.calcium
Explanation:
Calcium is more reactive than magnesium because the calcium atom is larger than the magnesium atom.Magnesium is less active than sodium; calcium is less active than potassium; and so on. These metals become more active as we go down the column. Magnesium is more active than beryllium; calcium is more active than magnesium; and so on.
if there are 50 cytosine bases in a DNA molecule , how many guanine bases should there be
Answer:
25 guanine bases
Explanation:
if a dog has 78 chromosomes in each of his cells, how many molecules of dna does he have in each of his cells
If a dog has 78 chromosomes in each of his cells, each set of DNA has two sets of chromosomes because dogs are a diploid species so it would be 78/2 and in each cell a dog with 78 chromosomes would have 39 molecules of DNA in each of his cells.
What is the final product of meiosis?
The final products of meiosis in males is four sperm cells and in females it is one ovum and three polar bodies. Thus, the final product of meiosis is four sperm cell in male and one ovum in female with three polar bodies. The main objective of meiosis is to produce gametes, the sperm and eggs, with half of the genetic character of the parent cell.
Meiosis has been defined as the process in which a single cell divides into two identical daughter cells and the process is known as cell division. Meiosis has a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes.
The main functions of meiosis are mentioned below:
1) Meiosis in humans causes the decrease or reduction of the number of chromosomes in normal cells which is specifies as production of gametes.
2) meiosis induces genetic variation by the process of recombination.
Therefore, If a dog has 78 chromosomes in each of his cells, each set of DNA has two sets of chromosomes because dogs are a diploid species so it would be 78/2 and in each cell a dog with 78 chromosomes would have 39 molecules of DNA in each of his cells.
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the site in the neuron where epsps and ipsps are integrated is the
hiya! :)
That would be the "Synapses"
A spit is formed through wave deposition.
Please select the best answer from the choices provided
T
F
Adaptations are phenotypes that improve reproductive success; such phenotypes might arise as a result of ______ followed by ______ over many generations.
Adaptation is a phenomenon that occurs when an organism becomes comfortable or fitted to its environment without suffering any adverse effect.
Adaptations are phenotypes that improve reproductive success; such phenotypes might arise as a result of mutations in DNA followed by natural selection over many generations.
For a change that occurs in an organism environment, the organism needs to find ways to adapt to such environment.A favourable change in the DNA (mutation) might then occur enabling them to adapt successfully.This favourable change will then be selected for due to natural selection as the change is heritable enabling the survival and reproductive success of the organisms.Learn more: https://brainly.com/question/17810004
The thin barrier around a cell is called the:
a. cell wall.
c. cell envelope
b. cytoplasm.
d. cell membrane
Answer:
d. cell membrane
Explanation:
thin membrane that surrounds every living cell, delimiting the cell from the environment around it.
Which of the following has a short dendrite and a long axon?
Answer:
Motor neuron
Explanation: is correct
How many grams of the parent isotope were in the original fossil?
Answer:
If a fossil contains 6.25%
Explanation:
What causes evaporation?
Answer:
In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas. ... When it is cool enough, the water vapor condenses and returns to liquid water.
Where do meteorites come from?
Answer:
milky way Galaxy
Explanation:
meterites came from milky way galaxy
Answer:
Almost all of our meteorites come from our solar system.
Explanation:
Although they are from our solar system they are formed by multiple collisions of asteroids, meaning that they are made from broken asteroids.
What does the modern atomic theory state?
A: an atom is mostly empty space
B: all atoms are made up of hundreds of smaller particles
C: atoms of different elements are exactly the same
D: Adams of different kinds combine to form different elements
Answer:
ABCD.Mga bobo kayo putanginanyo hahahahahahahahhaaha
Explanation:
12345
Answer: An atom is mostly empty space.
Explanation:
When a grasshopper eats grass, what percent becomes another grasshopper?
Answer:The rest of the energy from grasshopper will be transferred to the next trophic level in the food chain with in the ecosystem.
Explanation:
Grasshoppers don't just hop on the grass. They also eat the grass. Other organisms also eat the grass, and some animals even eat the grasshopper. These interactions can be visualized by drawing a food web.
List three utilitarian uses of biodiversity.
Answer:
The monetary or utilitarian upsides of biodiversity depend upon the reliance of man on biodiversity; items that nature can give: wood, food, strands to make paper, gums, synthetic natural items, qualities just as information for biotechnology, including medication and corrective sub-items.
Explanation:
Hope this will help you :)
I need help with this
Semiconservative replication is the replication of a complete DNA molecule.
a. True
b. False
Answer:
the answer is false
Explanation:
false
Organisms take in this oxygen and release it as carbon dioxide through respiration.
Answer:
Animals take in oxygen and release carbon dioxide through respiration. Plants take in carbon dioxide and release it as oxygen through photosynthesis. So if the organism is an animal, that statement is true, but if the organism is a plant, that statement is false.
Explanation:
I don't know what you are asking, but that might answer your question.
3
Organisms need ____
to conduct essential life activities.
•Offspring
•Energy
•Other organisms
•Light
Answer:
Energy
Explanation:
Energy helps organisms move and conduct daily activities.
Answer:
ENERGYYYYYYYYYYYYYYY!!!!!!!!!
Explanation:
They need energy not all organisms need light or even sun some can live without both but they will always need Energy no energy no life kinda sad right i mean we need energy to live same for organisms
A sea turtle would be LEAST LIKELY to live in the
A) Southern Ocean.
B) Indian Ocean.
C) Atlantic Ocean.
D) Pacific Ocean.
Answer:
Southern Ocean
Explanation:
Its big water, and lots of predators. 'Sea turtle that doesn't have a hard, bony shell'.
Sea turtle belongs to the Reptilia group of Class Chordata of Animal Kingdom. They are marine animals which would be least likely to be found in the Southern Ocean. Thus, the correct option is A.
What are Sea turtle?
Sea turtles are also called as marine turtles, sometimes. These are reptiles of the order Testudines and belongs to the suborder Cryptodira. The existing species of sea turtles include the flatback, green, hawksbill, leatherback, loggerhead, Kemp's ridley, and olive ridley sea turtles.
Sea turtles can be found all around the world. The habitats can range from the cold waters off California to the warm beaches of the Coral Triangle. The males of this population never leave the ocean, while the female sea turtle will come ashore to lay the eggs on the sandy beaches during the nesting season to hatch the eggs and produce the new organisms.
Therefore, the correct option is A.
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how are latitude and altitude similar and diffrent
Question 5
Lichens are important to the creation of an ecosystem due the fact that they create soil by
Answer:
weather rock Explanation: its right on quizlet
Based on the trends shown in the table, in which of the following years was the owl population at carrying capacity?.
From the table shown, in 2015, the population reaches its carrying capacity.
The term carrying capacity refers to the maximum population that a particular environment can support. It is the average population size in a habitat. Beyond the carry capacity, the habitat can no longer support living things.
Given the table, the carry capacity is achieved when the birth rate is almost equal to the death rate. That occurs in 2015. Hence, in 2015, the population reaches its carrying capacity.
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If you experimentally increase the concentration of Na outside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential
Given what we know about membrane polarization, we can confirm that If you experimentally increase the concentration of Na outside a cell while maintaining other ion concentrations as they were, the cells membrane potential would increase and be positively charged.
Increasing the concentration of Na outside a cell would cause there to be an increase and a build-up of positive charges outside of the cell. Due to the fact that the ion concentrations inside the cell remain constant, we can confirm that there will be a net positive charge on the outside of the cell and this will cause an increase in the membrane's potential.
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Equestrians where are you help plz
Jk just points
Answer:
thanks
Explanation:
The interacting populations of living plants and animals in a particular location are described as a(n)
HELP PLEASE ILL GIVE YOU BRAINLEST
A skydiver jumps out of an airplane at 10,000 feet above ground (Position A). Then continues falling until he opens his parachutes and lands safely on the ground.
Question:
A. Given the positions above (Position A and Position B), at which position does the skydiver have the higher potential energy? Explain. (1 point)
B. Given the position above (Position A and Position B), at which position does the skydiver have the higher kinetic energy? Explain. (1 point)
Answer:
You have to put a image.
What is an example technology that uses NLS?/ why is it important
Please someone answer!
Explanation:
NLS, or the "oN-Line System", was a revolutionary computer collaboration system developed in the 1960s. Designed by Douglas Engelbart and implemented by researchers at the Augmentation Research Center (ARC) at the Stanford Research Institute (SRI), the NLS system was the first to employ the practical use of hypertext links, the mouse, raster-scan video monitors, information organized by relevance, screen windowing, presentation programs, and other modern computing concepts. It was funded by ARPA (the predecessor to Defense Advanced Research Projects Agency), NASA, and the US Air Force
what is the function of the leaves of the elodea plant
Answer:
The chloroplast inside the leaf of an eloda plant allow the plant to make its own food(photosynthesis)
Explanation:
use the following terms in the same sentence protron neutron and istope
Answer: Isotopes are from a specific group of elements that all have the same number of protons but a different number of neutrons
Explanation:
