Answer:If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!
However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^1
1
start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.
How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.
Explanation:
How are influenza viruses classified?
by their type of movement
by their protein structure
by their genetic material
by their different shapes
Answer: They are classified by subtypes based on the properties of their hemagglutinin (H) and neuraminidase (N) surface proteins. There are 18 different HA subtypes and 11 different NA subtypes. Subtypes are named by combining the H and N numbers.
1.There movement: People with flu can spread it to others up to about 6 feet away. Most experts think that flu viruses spread mainly by droplets made when people with flu cough, sneeze or talk. These droplets can land in the mouths or noses of people who are nearby or possibly be inhaled into the lungs.
2. There protein structure: The influenza viruses are classified into types A, B, and C on the basis of their core proteins. Type A viruses are further subdivided according to their envelope glycoproteins with haemagglutinin (HA) or neuraminidase (NA) activity.
3. There genetic material: by subtypes based on the properties of their hemagglutinin (H) and neuraminidase (N) surface proteins. There are 18 different HA subtypes and 11 different NA subtypes. Subtypes are named by combining the H and N numbers – e.g., A(H1N1), A(H3N2)
4. Different shapes: I don't know that one
Explanation: Hope this helps though :)
Answer:
b) by their protein structure.
Explanation:
Influenza viruses arefrom the family of Orthomyxoviridae they have a single-stranded segmented RNA genome. The influenza viruses are classified into types A, B, and C based on their core proteins.
Big Question:How is energy/matter transferred throughout an ecosystem?
Answer:
Food webs can transfer energy because the proteins from an animal can go on, this benefits ecosystems.
How many neutrons are in a nucleus of an atom that
has an atomic mass of 16 and an atomic number of
Answer:
4
Explanation:
Which occurs during digestion?
The mouth only allows for physical digestion.
The mouth only allows for chemical digestion.
Chemical digestion prepares the food for physical digestion.
Physical digestion prepares the food for chemical digestion.
Answer:
Physical digestion prepares the food for chemical digestion.
Answer:
D
Explanation: Physical digestion prepares the food for chemical digestion.
PLEASE HELP
explain how a gis can model the ways that changes in climate can influence human activity
Answer: a Gis helps locate areas where temperatures are high or erratic in comparison to global averages which can help show global warming as well
GIS aids in the identifying the places where temperatures are unusually high or irregular and influences human activity about changes in climate.
What is GIS?"A Geographic Information System (GIS) is a computer program that analyses and displays information that is geographically referenced." It uses data which it gets from the device that have enabled its location.A GIS helps us in gaining a scientific understanding of earth systems on a large scale, allowing us to make more careful and calculated decisions.What is climate?"The long-term weather pattern in a certain location is referred to as climate."Long-term shifts in temperature and weather patterns are referred to as climate change.Hence, GIS tells about the prevailing climatic condition of an area.
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Explain the relationship between the processes of breathing and cellular respiration
Cellular respiration uses oxygen to release the energy stored in food.
Explanation:
In breathing living organisms take oxygen and release the carbon dioxide it is similar to the aerobic respiration.
There are two types of respiration:
1. Aerobic respiration
2. Anaerobic respiration
Aerobic respiration
It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.
Glucose + oxygen → carbon dioxide + water + 38ATP
Anaerobic Respiration
It is the breakdown of glucose molecule in the absence of oxygen and produce small amount of energy. Alcohol or lactic acid and carbon dioxide are also produced as byproducts.
Glucose→ lactic acid/alcohol + 2ATP + carbon dioxide!
Organelles are structures within the cell that perform important functions. Which of the following correctly matches the
organelle with its relationship to the whole cell?
Answer:
mitochondria: powerhouse of the cell
Ribosomes: the places where proteins are synthesized in our cells.
nucleus houses DNA;controls cell
Vacuole: holds waste and fluids from cell
Ribosomes: tiny organelles that contain RNA and specific proteins within the cytoplasm.
Explanation:
Organelles make up the subunits of a cell. There are numerous each with their own function.
There are various cell organelles that play an essential function these are as follow:
MitochondriaNucleusChloroplastEndoplasmic reticulumGolgi bodiesRibosomePeroxisomeWhat is the different role of cell organelles?Mitochondria: Generates energy (ATP) for the biochemical reaction.
Nucleus: Responsible for the synthesis of mRNA, rRNA, tRNA and DNA.
Chloroplast: responsible for Photosynthesis by using sunlight in plant cells.
Endoplasmic reticulum: carry Protein(RER) and lipid synthesis(SER).
Golgi bodies: play role in protein sorting, transporting and trafficking.
Ribosome: two types of ribosomes are present in the cell-free ribosome and membrane-bound ribosomes, responsible for the synthesis of protein.
Peroxisome: play role in fatty acid oxidation and metabolism.
Thus, all these organelles play important functions in cells.
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Which of these organisms have no seeds and no specialized tissues?
sequoia trees
orange trees
club moss
liverworts
Answer:
Liverworts
Explanation:
a small flowerless green plant with leaf-like stems or lobed leaves, occurring in moist habitats. Liverworts lack true roots and reproduce by means of spores released from capsules.
how does newtons law of universal gravitation apply to earth and the moon
list the biotic and abiotic factors in this image
Answer:
Biotic:
BearMooseTreesEagleBirdFishDucksOtterFernsGrassButterflyAbiotic:
RocksWaterCloudsMountainExplanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
what materials make up the cell membrane
Answer:
Lipids, Proteins, and carbohydrates
Explanation:
I did this once and I got it right, I hope you get it right too
Answer:
the material that makes up the membrane cell is the phospholipids, cholesterol, proteins, and carbohydrates.
Explanation:
CAN I HAVE Brainiest p.s. please
Where in the cell does the krebs cycle part of cellular respiration occur ?
Answer:
In the mitochondrial matrix
Explanation:
The mitochondria is an organelle within the cytoplasm of the cell. It consists of an outer membrane, inner membrane, and matrix containing a gel-like substance. During aerobic respiration in mitochondria, cells break down sugars in the form of glucose into [tex]CO_{2}[/tex] (carbon dioxide) and [tex]H_{2} O[/tex] (water) to obtain energy in the form of ATP or adenosine triphosphate.
aerobic respiration:
C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
(glucose) (oxygen) (carbon dioxide) + (water)
The Kreb's cycle involves several enzymatic reactions, where pyruvate derivatives obtained from glycolysis, are reduced and oxidized to harvest energy as ATP.
how does studying earths rocks and meteorites support the age of earth?
Answer:
Thousands of meteorites, which are fragments of asteroids that fall to Earth, have been recovered. These primitive objects provide the best ages for the time of formation of the Solar System. There are more than 70 meteorites, of different types, whose ages have been measured using radiometric dating techniques.
Meteorites that fall to Earth represent some of the original, diverse materials that formed planets billions of years ago. By studying meteorites we can learn about early conditions and processes in the solar system's history.
Umm.. maybe my answer is not what you needed
I'm sorry ❤️
Answer:
Scientists think that meteorites can get chemicals such as isopropyl cyanide from a space cloud. So, it’s possible that a meteor that had acquired isopropyl cyanide struck Earth and brought life to the planet.
Explanation:
plato answer
Pleaseee help I’m failing kinda
Scientists recently discovered a single-celled, prokaryotic organism living deep in the ocean by thermal vents that can reach temperatures
as high as 100 degrees Celsius. This species will most likely be classified into which Kingdom?
O Kingdom Protista
O Kingdom Eubacteria
OKingdom Archaebacteria
OKingdom Fungi
Answer:Kingdom Archaebacteria
Explanation:
Kingdom Archaebacteria can withstand high heats up to 125 celcius
16. What explanation can be used to describe the test tube shown?
5 points
A. Water is polar and oil is polar therefore the substances will not mix.
B. Water is nonpolar and oil is nonpolar therefore the substances won't mix.
C. Water is nonpolar and oil is polar therefore the substances will not mix.
D. Water is polar and oil is nonpolar therefore the substances will not mix.
Answer:
Water is polar and oil is nonpolar so the substances won't mix.
Explanation:
Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water.
best answer gets brainliest
Page 1 Page 2 Radioactive decay involves the changing of a radioactive atom into another radioactive atom. For example, rocks and minerals may contain potassium-40 that changes into argon-40. Mass spectrometers measure the number of these atoms in a rock or mineral sample. This information and knowing the half-life of potassium-40 can help determine the age of rock layers. The half-life of potassium-40 is 1.3 billion years. The potassium-40 in rocks and minerals will decay through many half-lives until all of them change into argon-40. How many atoms will there most likely be at the third half-life of potassium-40 in this model? A model rock layer had 50 pennies (atoms of potassium-40). How old is the rock layer?
Answer:
13 and 1.3 billion years
Explanation:
Just got it right
Answer:
1. 13
2. 1.3 billion years old
Explanation:
good luck hope you get a 1000000
The following four ears of corn were taken from separate plants. Each kernel represents an offspring. The kernels on the four ears were counted for the color trait (purple or white) and/or sweetness trait (starchy or sweet). The data gave these phenotypic ratios for the four ears:
Ear #1 – 3 purple : 1 white
Ear #2 – 3 starchy : 1 sweet
Ear #3 – 9 purple, starchy : 3 purple, sweet : 3 white, starchy : 1 white, sweet
Ear #4 – 1 purple : 1 white
Which traits are recessive?
Answer:
the answer is white and sweet, i just took the quiz
Explanation:
The phenotypic ratio provides information about how many genes are involved in the cross, which is the dominant trait and which is the recessive trait. In the exposed example, white and sweet are the recessive traits.
-------------------------------
By looking at the phenotypic ratio of the progeny, you can tell which trait is the dominant one and which is recessive.
Let us assume two diallelic genes, each coding for one trait.
Let us also say that these genes assort independently -they are not linked-, and they do not interact with each other.
When we are only considering one single gene,
the phenotypic ratio after crossing two heter0zyg0us individuals is 3:1. In these situations, we expect to see 3/4 of individuals expressing the dominant trait, and 1/4 expressing the recessive trait.the phenotypic ratio after crossing a heter0zyg0us individual with an h0m0zyg0us recessive one is 1:1. We expect to see 2/4 of the progeny expressing the dominant trait and 2/4 the recessive trait.When we are only considering two genes simultaneously, we expect to find the following phenotypic ratio 9:3:3:1
9/16 individuals expressing both dominant traits3/16 individuals expressing one dominant trait and one recessive trait1/16 individuals expressing both recessive traits.
Now let us analyze each Ear,
Ear #1 – 3 purple : 1 white
Only the color trait is considered. The phenotypic ratio is 3:1Two heter0zyg0us individuals must be involved in the cross3/4 are purple and 1/4 is whiteDominant trait: purpleRecessive trait: white
Ear #2 – 3 starchy : 1 sweet
Only the sweetness trait is considered. The phenotypic ratio is 3:1Two heter0zyg0us individuals must be involved in the cross3/4 are starchy and 1/4 is sweetDominant trait: starchyRecessive trait: sweetEar #3 – 9 purple, starchy : 3 purple, sweet : 3 white, starchy : 1 white, sweet
Both traits are considered. The phenotypic ratio is 9:3:3:1Two dihybrid individuals must be involved in the cross9/16 are purple and starchy, 3/16 are purple and sweet, 3/16 are white and starchy, and 1/16 is white and sweetDominant trait: purple and starchyRecessive trait: white and sweetEar #4 – 1 purple : 1 white
Only the color trait is considered. The phenotypic ratio is 1:1One heter0zyg0us individual and one h0m0zygous recessive individual must be involved in the cross2/4 are purple and 2/4 are whiteDominant trait: PurpleRecessive trait: WhiteThe recessive traits are white color and sweet taste.
------------------------------------------
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Since oxygen gas is being released, it can be inferred
that the plant is
A. producing glucose
B. releasing energy from water
C. making protein
D. carrying on active transport
Answer:
Option A
Explanation:
The answer is option A or "producing glucose." Glucose is a sugar that is a main component for all living organisms because it contains carbohydrates. When oxygen is being released from a plant it means that it's producing glucose which is released through the plants stomata.
Hope this helps.
Since oxygen gas is being released it can be inferred that the plant is PRODUCING GLUCOSE. (Option A).
Photosynthesis is a series of metabolic reactions by which plants and algae use the energy from the sun and carbon dioxide to produce simple carbohydrates (e.g., glucose) and oxygen.
Photosynthesis has two main types of reactions: light-dependent reactions and light-independent reactions (i.e., the Calvin cycle).
During light-independent reactions, carbon-containing molecules such as, for example, glucose molecules, are produced from carbon dioxide.
In conclusion, when oxygen gas is being released it can be inferred that the plant is PRODUCING GLUCOSE (Option A).
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What is Kingdom Monera?
Answer:
Monerais a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria.They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).
Explanation:
Which three statements describe ways the earths atmosphere protects living things?
A.The atmosphere keeps the biospheres temp in a comfortable comfortable range
B.The atmosphere allows space objects to crash into Earth
C.The atmosphere blocks solar radiation that would harm living things
D.The atmosphere provides gases that living things need
Answer:
A, C, D Brainliest plsss
Answer:
a,c,d
Explanation:
Small aquatic organisms, such as coral, are the producers of the ocean.
Answer:
True
Explanation:
Primary Producers: Primary producers in a coral reef ecosystem include plankton, sea weeds and sea grasses. All of these organisms are photosynthetic organisms that get their energy from the sun.
Answer:
False
Explanation:
the Coral is not a producer, but rather a secondary consumer, in order to be a producer of an organism must be able to carry out photosynthesis.
What best explains how they should complete the table?
with “Inside the nucleus,” because the particle is a proton
with “Inside the nucleus,” because the particle is a neutron
with “Outside the nucleus,” because the particle is a proton
with “Outside the nucleus,” because the particle is an electron
Explanation:
Protons and neutrons are subatomic particles found in the atom of any substance.
These particles collectively determines the mass number of the atom.
Protons are positively charged particles found in the nucleus of an atom. Neutrons do not carry any charges and are also found in the nucleus. Electrons are negatively charged particles.Electrons occupy the extranuclear space of an atom.
Answer:
Depends, you have to give us a table, let me explain how to answer this.
Explanation:
“Inside the nucleus,” because the particle is a proton
For this to be true, it has to have a mass (amu) of 1 and it has to have a positive charge
“Inside the nucleus,” because the particle is a neutron
For this to be true, it has to have a mass (amu) of 1 and it has to have a neutral charge
“Outside the nucleus,” because the particle is a proton
This is instantly wrong because protons are located in the nucleus
“Outside the nucleus,” because the particle is an electron
For this to be true, it has to have a mass (amu) of 1/2000 and it has to have a negative charge
Determine the genotype of each parent dog and write them below.
Curly fur = F
Straight fur = f
Blonde fur = B
Brown fur = b
Genotype of parent dog 1: (???)
Genotype of parent dog 2: (???)
Answer:
Genotype of parent dog 1: FfBb
Genotype of parent dog 2: FfBb
Explanation:
How is ATP Synthase powered?
question one: why do stars change very little while they are in the main sequence stage?
question two: why does a main sequence star eventually grows in size to become a red giant?
Answer:
Q1 As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts.
Q2When stars first begin to fuse hydrogen to helium, they lie on the zero-age main sequence. ... The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core. The star gets larger, redder, and more luminous as it expands and cools.
Which of the following is the most complete and accurate
description of mutation?
A
Three adjacent nitrogen bases of mRNA that code for an
amino acid.
B
The process of matching anticodon sequences in tRNA to
mRNA codons.
С
A spontaneous change in DNA that may lead to cellular
malfunction.
D
A biomolecule composed of amino acids connected by
peptide bonds.
Answer: the answer is C
Explanation: mutation is a change in dna that results in overall structure changes to organisms
A spontaneous change in DNA that may lead to cellular malfunction is the most complete and accurate description of mutation.
In genetics, a spontaneous and unpredictable variation in the sequence of genes that make up the DNA of a living being that introduces specific changes is called a mutation.
This alteration, which can be hereditary, implies a modification of its characteristics.
These types of changes occur spontaneously and naturally, product of errors in the replication of the genome during the phases of cell replication.
From a mutation, the living being can develop different diseases, manifest changes in its organism or hereditary defects.
Despite of this, mutations are key to sustaining high genetic variability, promoting adaptation and evolution (even creating new species in the long run).
Therefore, we can conclude that a spontaneous change in DNA that may lead to cellular malfunction is the most complete and accurate description of mutation.
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ILL MARK YOU BRAINIEST ASAP!!!I DONT GET THIS UGHHHHHH!!!!! SOME BIO QUESTION ON MITOSIS....IMAGE BELOW
Answer:
a anaphase
Explanation:
prophase metaphase Anaphase telophase the cytokenisis
Answer:
a anaphase
Explanation:
Which accurately labels the Golgi body?
W
X
Y
Z
How Is the Earth Changing? How would you answer this question now?
Answer: Climate change
Answer:
Humans—more specifically, the greenhouse gas (GHG) emissions we generate—are the leading cause of the earth's rapidly changing climate. Greenhouse gases play an important role in keeping the planet warm enough to inhabit. But the amount of these gases in our atmosphere has skyrocketed in recent decades. Global sea level rise is complex as well. To begin with, it has multiple causes, including the thermal expansion of the ocean as it warms, runoff of melt water from land-based ice sheets and mountain glaciers, and changes in water that’s stored on land. These factors combine to raise the height of our global ocean about 3.3 millimeters (0.13 inches) every year. That rate is accelerating by another 1 millimeter per year (0.04 inches per year) every decade or so.
Explanation: