how to mark someone brainlist
Answer:
when two people has answered your question you will see a crown on your answer and then you select the answer that is right
Explanation:
which statements accurately reflect the permeability of the cell membrane? choose all that apply
Answer:
The hydrophilic part of the cell membrane is A, the phosphate head.
Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane.
C, the lipid tails, are hydrophobic and repel water.
Explanation:
Imagine that you are managing a large wildlife preserve that was formerly a cattle ranch. You know from historical accounts that wild sheep used to live there, but they were hunted until the local population was exterminated. After doing some research to determine what might be an appropriate starting population, you introduce them. Food is abundant and they have no natural predators. You then spend several years graphing the number of individuals (on the vertical axis) against the number of generations (on the horizontal axis). By the 10th generation, the population begins to reach carrying capacity.
Requried:
What BEST defines this mathematical model used in population studies?
The mathematical model used in this population study is known as the logistic growth model.
What is logistic growth model?The logistic growth model is a mathematical model that is used to describe the growth of a population over time. It is based on the idea that the growth of a population is limited by resources such as food, habitat, and space, and that as the population grows, the rate of growth begins to slow. This results in a curve that starts out steep and then levels off as the population approaches its carrying capacity, which is the maximum population size that can be sustained in a particular environment.
In the scenario described, the population of wild sheep is introduced to a wildlife preserve where food is abundant and there are no natural predators. This means that the population is able to grow at a relatively fast rate, but as the population increases, it begins to approach the carrying capacity of the preserve. At this point, the rate of growth begins to slow, and the population levels off.
This is reflected in the graph, which shows the population increasing rapidly at first and then leveling off as it reaches carrying capacity. The logistic growth model is often used to understand and predict the growth of populations in a variety of contexts, including agriculture, biology, and economics.
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What is XX and XY? And which are their differences?
Answer:
chromosomes
Explanation:
the diefference is that one is combination of female genes and the other a combination of female with male genes
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What's the question?
I cannot download anything from the internet sorry, so i need the question to be able to answer.
Why is it that cancer does not form every time there is a mistake during the cell cycle?
Answer:
Cells will actually kill themselves through a process called apoptosis, or it will be attacked and killed so it doesn’t spread. For example, when you are exposed to the sun for a long period of time, the solar radiation can mess with your skin cells. That’s why you get sunburned: the cells dry up and fall off. Otherwise, you could get skin cancer
The reason why cancers does not form every time there is a mistake during the cell cycle is explained below:
The following information should be considered:
Cells will actually kill themselves through a process called apoptosis, or it will be attacked and killed so it doesn’t spread. For example, when you are exposed to the sun for a long period of time, the solar radiation can mess with your skin cells. That’s why you get sunburned: the cells dry up and fall off. Otherwise, you could get skin cancerLearn more: brainly.com/question/16911495
ribosomes contain three discrete sites where trnas bind and the polypeptide is synthesized. these are called site (a site), site (p site), and site (e site).
Answer:
Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the
Explanation:
Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the
What is the difference between permanent gases and variable gases in the atmosphere?
Answer:
the difference is that permanent gases have larger residence times and Variable gases have shorter residence times
the difference between permanent gases and variable gases in the atmosphere is permanent gases are gases that have a very low dew point.
What are the characteristics of the atmosphere?The Earth's atmosphere is basically composed of a mixture of gases, being 78% Nitrogen, 21% Oxygen and 1% Argon. In addition, traces of carbon dioxide, water vapor and other gases are found, but in very small amounts.
In this way, permanent gases are gases that have a very low dew point.
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the part of the brain that coordinates the movement of skeletal muscles
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Answer:
lol XD
Explanation:
PLEASE HELP ME I NEED HELP
Answer:
D
Explanation:
Hope this helps
Answer:
I'm pretty sure its D - hibernation
Explanation:
Torpor means a state of physical or mental inactivity, or lethargy.
Hibernation means an extended period of inactivity.
They are both used for survival in cold weather.
the anterior pituitary hormone that controls the release of glucocorticoids from the adrenal cortex is __________.
Answer:
Adrenocorticotropic Hormone (ACTH)
Explanation:
Explanation:
Adrenocorticotropic hormone (ACTH)
which system is responsible for preventing pathogens from disturbing homeostasis?
Answer:
The immune system protects the host from pathogenic organisms (bacteria, viruses, fungi, parasites). To deal with this array of threats, the immune system has evolved to include a myriad of specialised cell types, communicating molecules and functional responses.
Explanation:
Eukaryotes are __________________ and include __________________________.
Answer: Eukaryotes are the cells of animals, plants, and fungi and include membrane-bound organelles such as a nucleus and mitochondria.
Explanation: Hoped this helped! :D
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Most of the world's iron ore, including that found in northern Minnesota, formed during the middle Precambrian period, ranging in age from 1.8 to 2.5 billion years old. They are composed of alternating layers of iron-rich material, most often magnetite or hematite, and silica. These iron oxide minerals formed on the ocean floor, creating the banded iron deposits you see here. What was the source of the oxygen that helped to produce these deposits?
A) The oxygen that was released into the atmosphere as a by-product of photosynthesis caused iron deposits to oxidize creating the iron oxide minerals.
B) Photosynthetic organisms making oxygen as a by-product of photosynthesis and the oxygen reacted with the iron dissolved in seawater to form iron oxide minerals.
C) The decomposition of carbon-based life forms in the oceans released oxygen and carbon dioxide. These gases reacted with the iron deposits forming the minerals mentioned.
D) In Earth's early biosphere, there were not organisms that underwent aerobic cellular respiration and an excess of oxygen built up in the atmosphere. This oxygen reacted with iron deposits to form iron oxide minerals.
Answer:
b
Explanation:
Answer:
) Photosynthetic organisms making oxygen as a by-product of photosynthesis and the oxygen reacted with the iron dissolved in seawater to form iron oxide minerals.
Explanation:
What types of information can scientists learn from fossils?
Answer:
Types of information scientists learn from fossils is what it was like back then before we existed, these fossils also tells us our history and we might learn from the history and prevent any disaster that killed that animal or plant from happening to us
Explanation:
Hope this helps!
explain how the structure and the function of squamous epithelium in the lung are important for gas exchange(4 marks)
which words help determine the meaning of the word vividly in paragraph 1
context clues,
the meaning is a strong image
the global distribution of the diversity of phytoplankton is indicated in the map shown here. which statement best describes the reason for the distribution of different species of phytoplankton as shown here?
PLEASE HELP ME OUT!!
Answer:
A)Light levels and average temperatures are higher at 0 degrees latitud…
Explanation:
got it right on usa testprep :)
which term describes the site of a muscle attaching to the bone that moves the most?
Answer:
Insertion
Explanation:
3. A strain of cells undergoes a mutation that increases the permeability of the inner
mitochondrial membrane to hydrogen ions.
a) What effect would you expect this mutation to have on the process of cellular
respiration? 12
b) Assuming the mutant cells can survive, how might the metabolic requirements of
these cells differ from those of a non-mutant strain of the same variety? 12
A mutation that involves the permeability of the inner mitochondrial membrane to protons (H+) will affect the amount of ATP. If mutant cells can survive, then they will need more energy to create a suitable gradient.
Cellular respiration is a series of metabolic reactions by which aerobic cells can generate energy in the form of ATP by using the chemical energy stored in the foods.
Cellular respiration can be divided into three sequential stages: glycolysis, the Krebs cycle (also called the acid citric cycle) and oxidative phosphorylation.
During oxidative phosphorylation, the transport of electrons across the inner mitochondrial membrane is coupled to the generation of an electrochemical proton (H+) gradient, which is then used to generate ATP by means of a protein complex known as ATP synthase.
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A cross between a red cow and a white bull produces an offspring with a roan color (a spotted red-and-white color). This exhibits what type of genetic inheritance?
Answer:
co-dominance
Explanation:
in co-dominance both parents are dominant
Help me please!!!!! ASAP!!!
Answer:
Noncyclic photophosphorylation (top) and cyclic photophosphorylation (bottom). These processes are better known as light reactions.
Glycolysis produces 2 ATP molecules, and the Krebs cycle produces 2 more. Electron transport from the molecules of NADH and FADH2 made from glycolysis, the transformation of pyruvate, and the Krebs cycle creates as many as 32 more ATP molecules.
I'm not sure if that'll help you, but yuhhh!
what types of solute molecules may be moved by facilitated diffiusion
Explanation:
Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane. Two classes of proteins that mediate facilitated diffusion are generally distinguished: carrier proteins and channel proteins.
How would this impact the organism?
Answer:
how would what impact the organism?
A scientist wants to determine the age of a rock. The rock contains an index fossil and an ancient relative of a living organism. Which is more useful for dating the rock, and why?
Answer: Ancient Relative of a living organism
Explanation: Ancient Relative because by using the index fossil, you are also using the law of superposition. This law does not give you an accurate/specific date but instead the order they are in (i.e me saying i am older than my siblings compared to me saying i am 2 years older than them). By using an ancient relative of a living thing then we can see its phylogenic tree and measure around how old it is. Fossils also hold carbon and chemicals in there bones which allows us to use carbon dating. Carbon dating is an accurate way of measuring age.
the oceans lower atmosphere and contitents are the part of
Answer:
The oceans, lower atmosphere and contitents are the part of the Biosphere.
Cortical nephrons have their corpuscles near the _________ edge of the cortex and are the ______ common type of nephron.
Answer: the first is Peripheral and the second blank is more
When cells go through division in the early stages of life, they are known of stem cells. How do
we end up with all the different types of cells?
Answer:
these differentiate as a result of signaling mechanisms. ... The daughter cells divides and after each division it becomes more specialized. When it reaches a mature cell type downstream (for example, becomes a red blood cell) it will no longer divide.
Answer:
stem cells are called upon to generate a particular type of cell, they undergo asymmetric cell division.
Explanation:
with asymmetric division, each of the two resulting daughter cells has it's own unique life course
a giant tortoise traveling at 0.3 km/hr would take how many hours to complete a marathon(42km)
140 h
Explanation:
speed =distance/ time
so rearrange the formula
time= distance/ speed
time = 42/0.3
time = 140 h