I. Each carbon atom can form single bonds with up to four other carbon atoms. II. Each carbon atom can form double bonds with up to two other carbon atoms. III. Carbon atoms can join together to form chains or rings. IV. A single molecule of some compounds can contain thousands of carbon atoms.
Answer:
All the given choices
Explanation:
Carbon is a very interesting element which is the backbone of most organic compounds.
Organic compounds are made up of carbon. Carbon forms a wide range of compound due to the following properties;
An atom of carbon has 4 valence electrons and can bond with 4 other carbon. Carbon can form single, double and triple covalent bonds. They can join together to form rings or chains.6. Whether a molecule can cross the plasma membrane depends upon
A. the size of the molecule
B. the chemical properties of the molecule
C. the charge of the molecule
D. All of the above
Whether a molecule can cross the plasma membrane depends upon D. All of the above
Which molecule can pass the plasma membrane?
Small nonpolar molecules, consisting of O2 and CO2, are soluble in the lipid bilayer and consequently can effectively cross cell membranes. Small uncharged polar molecules, which include H2O, can also diffuse thru membranes, however large uncharged polar molecules, inclusive of glucose, cannot.
How do molecules pass across the plasma membrane?Explanation: Molecules pass throughout the plasma/mobile membrane through diffusion. If they're not small sufficient, they need to break down by means of other substances, which include enzymes, which can be biological catalysts. If they are small enough, usually, the easiest way for them to move is through diffusion.
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Metal are malleable and ductile. Explain on the basis of the electron sea level?
Metallic Bonding is restricted to metals only. In the metallic bonding, There is a electrostatic force of atrraction between the metal ions (which are positive)
and the electrons(which are negative).
The metal ions are arranged in a lattice pattern which is the regular repetitive structure.
_____________________________________Electron Sea Level:Every metal atom donate one or two valence electrons, so due to the BULK presence of the electrons, It results in a formation of sea of electrons. So the valence electrons don't just stay on their own atom, they roam around the whole metal. They are just like a sea of electrons. This is why it is called the electron sea model. basically metal ions are present as a iceberg or island in the freely floating sea of electrons.
_____________________________________How is Sea of electron related to the malleable and ductile property?The sea of electron works as a electron GLUE, That means the metal ions are strongly ATTRACTED to the electron, so When apply pressure on the metals they DONT BREAK that means they are not brittle but malleable and ductile. This is because of the moving electrons and because the cations slide easily past each other, The ability of the atoms to roll over each other into new positions without breaking the metallic bond is because of the electron glue.
_____________________________________IMPORTANT STATEMENTSBrittle; Hard but breakable due to absence of sea of electron.
Malleable and Ductile; Transformed into sheets and thin wires so they are somewhat ELASTIC.
How does a lion get its source of nitrogen to form its DNA or proteins?
Answer: The protein in their diets
Explanation:
The lion gets its source of nitrogen to form protein in its diet.
What is protein?Proteins are macronutrients that are present in foods. There are two types of proteins. Essential and nonessential. Non-essential proteins are synthesized in the body and essential proteins are needed to eat by taking food.
A lion is an animal, and animals synthesize some proteins in their body, and some proteins are to be taken from the food. Protein is necessary for the growth of the body. It gives strength to the body.
The protein synthesis is done in the cell of the animals. But the nitrogen, that the animals get is from the diet they eat which is meat and plants. It depended upon its diet. Some animals are carnivorous and some are herbivorous.
Therefore, the lions get their protein from their diet.
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Why do organisms breathe?
which is common to both photosynthesis and respiration
One challenge to understanding earth is
Answer:
I'm confused, what's the question here.
Explanation:
The diagram illustrates the water cycle.
Parts of the water cycle labeled U through Z. U: Water moving from a lake into the clouds. V: Clouds. W: Water falling from clouds as rain and snow. X: Water moving from ground to the clouds. Y: Water flowing down the mountainside into a lake. Z: Underground water going into lake.
Which letter represents runoff?
U
W
X
Y
Answer:
The answer is Y
Explanation:
Just took the test
Answer:
Y is your answer
Explanation:
Why is it logical for the level of FSH to fall greatly following ovulation?
Answer:
During each menstrual cycle, there is a rise in follicle stimulating hormone (fsh) in the first half of the cycle that stimulates follicular growth in the ovary. After ovulation the ruptured follicle forms a corpus luteum that produces high levels of progesterone. This inhibits the release of fsh!
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What types of seismic waves are likely to travel through the outer core?
A. Both S and P, because the outer core is liquid
B. Both S and P, because the outer core is solid
C. P but not S, because the outer core is liquid
D. P but not S, because the outer core is solid
Answer:
The answer is C
Explanation:
S only travels in solid's while P travels in both, the outer core is a liquid there for it would be C.
P but not S, because the outer core is liquid
Why does a submarine rise when its volume is increased? a. Because it now weighs less c. Because it fills with air b. Because its density is now lower than the water around it d. Because it is less buoyant when it is larger Please select the best answer from the choices provided A B C D
Answer:
A
Explanation:
A
1. What kind of erosion has helped paleontologists and geologists study the rock layers in the Badlands National Park?
A. The mechanical forces of wind, water and freezing wore away the layers of rock.
B. Chemical erosion causing hydration causing rocks to break up and ways away.
C. A combination of chemical and biological erosion wore away layers of rock.
D. Biological weathering from lichen and bacteria colonies ate away at the rock layers.
Answer:
A
Explanation:
In Badlands National Park, rain, wind, and frost have carved steep canyons, sharp ridges, gullies, spires, and knobs out of the Dakota prairie, providing a glimpse into the pace of geologic change.
What is the function of a smooth muscle tissue?
Answer:
Smooth muscle is found in the walls of hollow organs like your intestines and stomach. They work automatically without you being aware of them. Smooth muscles are involved in many 'housekeeping' functions of the body. The muscular walls of your intestines contract to push food through your body.
Explanation:
Based on these images, what can you say about the tentacles of an octopus and the limbs of a lizard?
They're homologous structures.
They're analogous structures.
They're vestigial structures.
They're neither homologous nor analogous structures.
n Thevre neither vestigial nor homologous structures,
select all correct answers
Answer:
B is one of the correct answers.
Explanation:
Mine has multiple answers but if yours doesn't I hope this helps!
The tentacles of an octopus and the limbs of a lizard are analogous organs. So the correct option is B.
What are analogous organs?The organs possessed by different species which have different anatomical structures but perform the same function as one another are called analogous organs. The development of analogous organs is a form of convergent evolution.
In convergent evolution, different types of species evolve separately and independent of each other but at some point, their functions or the functions of their organs converge with one another.
These analogous organs are developed in totally unrelated species but due to their environment, their evolution works in such a way that they develop in a similar way even after sharing no similarities with each other.
The convergent evolution giving rise to analogous organs is called homoplasy in terms of cladistics.
Thus, the tentacles of an octopus and the limbs of a lizard are analogous to each other. Therefore the correct option is B.
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What kind of allele results in the trait indicated by the green color being expressed in
the individuals shown here?
Answer:
dominant
Explanation:
because the dominant is present as it's phenotype
20. Minerals are identified by their
What is the process by which cells release energy in the absence of
oxygen? -
possible answers :
aerobic
anaerobic
calorie
cellular respiration
fermentation
glycolysis
Krebs cycle
matrix
NAD+
Answer:
This process is called aerobic respiration because it requires air (oxygen). In the absence of oxygen, the cell uses a process called anaerobic fermentation. or simply fermentation. ... Because aerobic respiration breaks the sugar all the way down, it releases much more energy than fermentation.
pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls
Answer:
B
Explanation:
Uracil replaces thymine so when you translate it you put each bases pair so for RNA uracil would replace adenine and guanine would replace cytosine.
Answer:
bbbbbbbbbbbbbbb
Explanation:
b
b
b
b
b
b
A student claims that the monarch population increases and decreases in a cycle, similar to the pattern of predator-prey populations like wolves and moose. Use the data to evaluate this claim
Answer:
yes that is true because by looking at the graph you can tell that it starts to increase then slowly decrease.
Explanation:
The monarch population represented by the graph depicts a fluctuating pattern which epitomizes a rise and fall pattern in the area occupied by monarchs over the winter season between 1995 and 2005.
The predator-prey population depicts the sharp decline in the prey population as they are being fed on in large numbers as the number of predator multiplies. This is followed by a decrease in the number of predators due to starvation as the available prey are insufficient to cater for their number. The cyclic nature of the graph shows similar pattern as areas occupied by monarchs declines as the winter season progresses over time.Learn more :https://brainly.com/question/18576344?referrer=searchResults
All cells contain cell membranes. Which of the following describes the composition of cell membranes?
2 points
Cell membranes are composed of carbohydrate chains, which allow all materials to enter and leave the cell.
Cell membranes are composed of cellulose, which provide rigidity for the cell.
Cell membranes are composed of cytoplasm, which allows proteins to be excreted by the cell.
Cell membranes are composed of lipid molecules, which provide a flexible structure.
Answer:
D
Explanation:
Why does the east coast of South America not have mountains volcanoes and earthquakes?
The east coast of South America does not have mountains volcanoes and earthquakes because of the conventional geologic story.
Reason of east coast of South America not involved mountain:The conventional geologic story renders the East Coast of North America which we called as the passive margin.
It is an area free of volcanoes and earthquakes because of its position that lies within the fractured plates which could be comprise of the surface of the globe.
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why does boiled yeast not ferment?
Answer:
they cant get enough heat to boil
Explanation:
Answer:
Possibly because of lack of air to activate the yeast? Or not enough heat, maybe?
Explanation:
If this is not correct, please, let me know, as I will be happy to correct it! :)
BLANK is the process of cutting DNA into fragments and inserting the fragments with a
desired
BLANK into another organism of the same or different species.
Answer:
Genetic engineering
is the process of cutting DNA into fragments and inserting the fragments with a desired trait into another organism of the same or different species.
Genetic engineering is also known as
✔ recombinant DNA technology
.
Explanation:
So the answers are
Genetic engineering
Trait
Recombinant DNA technology.
In 1815 a volcano erupted spewing billions of tons of ash into the sky. This ash "cloud" caused global annual temperatures to drop below normal, causing "a year without a summer" in 1816.Which sphere did this ash "cloud" affect to cause these changes? *
Answer:
The Atmosphere
Explanation:
1816 was a year without summer because the billions of tons of ash that was spewed blocked radiation preventing it from reaching the surface of the earth.
A volcano is a break in the crust of planetary bodies like Earth that allows gasses, volcanic ash, and hot lava to escape. Volcanos are one of the major factors that cause climate changes on Earth mostly because of their cooling effect.
The ash, gasses and lava usually escape to the atmospheric layer of the earth with their cooling effect. And they cool the earth by blocking incoming solar radiation. This can go on for months or years depending on the components and severity of the eruption and can lead to "a year without summer" as witnessed in 1816.
Breaking Down Food Quick Check
Chemical energy is stored in the bonds of
1.)water molecules.
2.) carbon dioxide molecules.
3.)glucose molecules.
4.) oxygen molecules.
Answer:
cake and the fact that the way it is baked
Can someone help me with this please?
Answer:
i think second
Explanation:
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How does the ozone layer affect life on Earth? (Site 1)
Answer:
It affects life on Earth by causing the heat rays of the sun weaker.
Explanation:
The ozone layer acts as a shield for life on Earth. The stratospheric ozone layer absorbs ultraviolet (UV) radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms.
What is the complimentary dna strand for AGT CGA CCT TTA CGA GGC ACT
I need help with this. Answer the punnet square and then answer the questions next to it. Please!
Answer:punnet square one :)
Explanation:
Bb. Bb
Bb. Bb
please help 50 points (real answers please) questions in the picture
Answer:
plasma membrane
other nonpolar molecules
Explanation:
Which describes the two cells formed through mitosis?
They are identical to each other but unlike the parent cell.
They are different from each other and the parent cell.
They are identical to each other and to the parent cell.
Answer:
The third one.
Explanation:
Mitosis doubles the DNA and then splits the cell in two so it will have identical daughter cells.
Answer:
They are identical to each other and to the parent cell.
Explanation:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.