Answer:cell.
[Note: This topic focuses on the cell as a system itself (single-celled organism); as a part of larger systems (multicellular organism), and sometimes as part of a multicellular organism. But they are always as part of an ecosystem.]
1. The living conditions is dependent on the structure, function and interrelatedness of cell parts. A living cell is
composed of a small number of elements - - mainly carbon, hydrogen, nitrogen, oxygen, phosphorous and sulfur.
a. because of its small size and four available bonding electrons, carbon can join to other carbon atoms in chains and rings to form large and complex molecules (macromolecules; organic building blocks / amino
acids)
b. the essential functions of cells involve chemical reactions that involve water and carbohydrates, proteins,
lipids and nucleic acids
c. cell functions are regulated; complex interactions among the different kinds of molecules in the cell cause
distinct cycles of activities - - such as growth and division
d. most cells function within a narrow range of temperature and pH; at very low temperatures, reactions are
slow ; high temperatures and/or extremes of pH can irreversibly change the structure of most protein molecules; even small changes in pH can alter how molecules interact.
e. examples of homeostasis at the cellular level to maintain equilibrium are diffusion, osmosis, and active transport
f. cellular organelles include cytoskeleton, Golgi complex, and endoplasmic reticulum
g. every cell is covered by a membrane that controls what can enter and leave the cell
h. within the cell are specialized parts for the transport of materials, energy transformation, protein building,
wasted disposal, information feedback and movement
i. most cells in multicellular organisms perform some specific functions that others do not
2. Scientists believe that prokaryotic cells (in the form of bacteria) were the first life forms on earth
a. from about 4 billion years ago to about 2 billion years ago, only simple, single-celled microorganisms
(Prokaryotic cells) are found in the fossil record
b. oncecellswithnucleidevelopedaboutabillionyearsago,increasinglycomplexmulticellular
(Eukaryotic cells)
c. in all but quite primitive cells, a complex network of proteins provides organization and shape
Explanation:
MAKEIN THIS CLEAR IM IN 7th grade trying 2 help but i have all A's
8 What is the complimentary mRNA sequence to the DNA sequence A-T-T-G-C-A.
Answer:
T-A-A-C-G-T
Explanation:
mRNA → Polypeptide
In order to translate an mRNA sequence into a polypeptide chain, it is important to establish the correct reading frame
The mRNA transcript is organised into triplets of bases called codons, and as such three different reading frames exists
An open reading frame starts with AUG and will continue in triplets to a termination codon
A blocked reading frame may be frequently interrupted by termination codons
Once the start codon (AUG) has been located and reading frame established, the corresponding amino acid sequence can be deduced using the genetic code
Example: (mRNA) GUAUGCACGUGACUUUCCUCAUGAGCUGAU
Answer: (codons) GU AUG CAC GUG ACU UUC CUC AUG AGC UGA U
5. A cross is made between a pea plant that has constricted pods (a recessive trait; smooth is dominant) and is heterozygous for seed color (yellow is dominant to green) and a plant that is heterozygous for both pod texture and seed color. Construct a Punnett square that depicts this cross. What are the predicted outcomes of genotypes and phenotypes of the offspring
Answer:
Genotypes:
- 1/8 SsYY
- 2/8 SsYy
- 1/8 ssYY
- 2/8 ssYy
- 1/8 Ssyy
- 1/8 ssyy
Phenotypes: 3:3:1:1
- 3/8 smooth-pod and yellow-seeded (SsYY + SsYy)
- 3/8 constrict-poded and yellow-seeded (ssYY + ssYy)
- 1/8 smooth-pod and green-seeded (Ssyy)
- 1/8 smooth-pod and green-seeded (ssyy)
Explanation:
Available data:
The two forms of the diallelic gene for pod texture are constricted and smooth. The dominant allele S expresses smooth pod The recessive allele s expresses constricted podThe two forms of the diallelic gene for seed color are yellow and greenThe dominant allele Y expresses YellowThe recessive allele y expresses greenCross: a pea plant that has constricted pods and is heterozygous for seed color with a plant that is heterozygous for both pod texture and seed color.
Parental) ss Yy x SsYy
Gametes) sY sy sY sy
SY Sy sY sy
Punnet square)
sY sy sY sy
SY SsYY SsYy SsYY SsYy
Sy SsYy Ssyy SsYy Ssyy
sY ssYY ssYy ssYY ssYy
sy ssYy ssyy ssYy ssyy
F1) Genotypes:
- 2/16 = 1/8 SsYY
- 4/16 = 2/8 SsYy
- 2/16 = 1/8 ssYY
- 4/16 = 2/4 ssYy
- 2/16 = 1/8 Ssyy
- 2/16 = 1/8 ssyy
Phenotypes:
- 6/16 = 3/8 smooth-pod and yellow-seeded (SsYY + SsYy)
- 6/16 = 3/8 constrict-pod and yellow-seeded (ssYY + ssYy)
- 2/16 = 1/8 smooth-pod and green-seeded (Ssyy)
- 2/16 = 1/8 smooth-pod and green-seeded (ssyy)
You are conducting an experiment to discover which were mosquito repellent works best.
Independent variable-
Dependent variable-
Answer: I think
Dependent: The repellent
Independent: The Mosquitos
Why do you think Lavoissier exposed a mouse to the gas he collected from mercury?
Answer:
Thus, in a confined space, candles were extinguished and mice died. Priestley believed his “pure air” enhanced respiration and caused candles to burn longer because it was free of phlogiston. For this reason, he called the gas that he obtained from decomposing mercury calx dephlogisticated air.
Explanation:
Describe how the antidote (treatment) helped Jared's cells make ATP (include the ETC and H gradient in your answer).
Answer:
By removing of poison.
Explanation:
The antidote treatment helped Jared's cells to make energy in the form of ATP by removing the adverse effect of the toxic substances which prevent the body or cell to make their functions properly i. e. production of ATP. Antidote is a medicine which removes the poison from the body that is bad for health of the body so the body is able to make their ATP again.
Which of the following is NOT a type of transportation used in plants?
Individual cells
O Root to stem
O Cell to cell
Transport of sap within the xylem and phloem
Answer:
Transport of sap within the xylem and phloem
Explanation:
After photosynthesis sugars move through the mesophyll via plasmodesmata; here, they reach phloem sieve tube elements in vascular bundles. From the STEs, they are actively transported against their concentration gradient to the phloem.
When the sugars enter the phloem, water moves across from the xylem tube into the phloem. This increases the water pressure inside the phloem, causing the sap to move towards sinks.
Thus translocation of sap only involves the phloem.
The movement of molecules through cell membranes is an extremely important biological process called _____
Answer:
Omggggg i know this oneeeeee. its diffusion i learned this last yearrrrrr. your welcome for whoever u are;)
Explanation:
Loss of what component in the extracellular matrix would result in lack of adhesion?
O A. Elastin
OB. GAGS
C. Collagen
OD. Fibronectin
Answer:
c. collagen
Explanation:
because multicellularity evolved independently in different multicellular lineages
The extracellular matrix is composed of many proteins with different functions. One of them is Fibronectin. The loss of Fibronectin in the extracellular matrix would result in a lack of adhesion.
What is the connective tissue?The connective tissue is composed of cells notoriously separated by the abundant extracellular matrix.The different connective tissues differ from each other in the properties of their matrix.What is the extracellular matrix?The extracellular matrix is produced by fibroblasts, which is a predominant cell population. The extracellular matrix has fibrillar proteins of different nature such as collagen, fibrillin, and elastin that determine tension properties. There are also adessive proteins such as fibronectin and laminin.These proteins are included in a medium containing water, salts, GAGs, proteoglycans, glycoproteins, and other macromolecules. All of them confer turgidity and facilitate diffusion.According to this framework, the loss of Fibronectin in the extracellular matrix would result in lack of adhesion.
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PLEASE HELP ME WITH THIS QUESTION
Answer:
It looks like choice A
Explanation:
What are two factors that ultimately decide what organisms can live in an area?
Answer:
abiotic and biotic factors
Explanation:
abiotic factors are things like sunlight, soil, minerals, ect.
biotic factors are things like plants, animals, fungi, ect.
How does the evidence support the central idea that cane sugar helped lead to the abolition of slavery? The evidence explains that modern technology triggered the shift from cane sugar to beet sugar. The evidence reveals that sugar barons in Cuba and Russia freed enslaved people and serfs. The evidence reveals that the author's family members were hardworking serfs on Russian farms. The evidence details how the modern technologies were used for large-scale sugar planting.
Answer:
B
Explanation:
took the test
When molecules are exposed to heat, they
A
stop moving completely.
B
begin to slow down.
C
start to move faster.
D
explode.
Answer:
C
Explanation:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
The image above is of a microscope specimen In your answer explain the following:
• What tissue this is
what body system it belongs to
• What types of cells are shown
• explain at least one function of one cell shown
Answer:
I can't see the picture of the cell,!
list three factors that normally stop animal population from growing indefinitely
Answer: Food, Water, Shelter and Space
Explanation: In the natural world, limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations.
which of these is the BEST example of a renewable resource?
A) oil
B) coal
C) trees
D) granite
Answer:
I think tree is the best example of renewable resources
Explanation:
because other are limited by nature but we can plant trees
Answer:
C trees
Explanation:
Did the test got it right
Which of the following is most likely to occur due to severe winds during a hurricane
1
درکه
1
Which of the following effects can occur because of the high surface tension of water?
A. Organisms can resist temperature changes, although they give off heat due to chemical
reactions
| B. A raft spider can walk the surface of a small pond
C. Sweat can evaporate from the skin, helping to keep people from overheating
D. Lakes cannot freeze solid in winter, despite low temperatures
Answer:
D.Lakes cannot freeze solid in winter,despite low temperatures
The effects can occur because of the high surface tension of water is - B. A raft spider can walk the surface of a small pond
The properties of water molecules such as surface tension, cohesion, adhesion are the attraction force between water molecules that causes the sticking of the water molecules. It takes place due to hydrogen bonding between hydrogen and oxygen atoms.
Surface tension is a type of this property where water molecules remain attached together.
Surface tension is:
Tightness across the surface of the water.Attraction force work between molecules due to polaritySmall insects can skate or walk on water such as raft spiders due to surface tensionCauses raindrops to form round beads when they fall.Thus, the effects can occur because of the high surface tension of water is - B. A raft spider can walk the surface of a small pond
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10. Which of these is NOT a way to
express probability?
A 1 in 4
B 50 percent
mally
C 2 음
D 25
Answer:
A 1 in 4
Explanation:
explain how energy from sunlight is used during photosynthesis, then how the energy is transferred to animals that cannot harness energy directly from the sun.
help me please
Answer:
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch. Cellulose is used in building cell walls.The chloroplasts collect energy from the sun and use carbon dioxide and water in the process called photosynthesis to produce sugars. Animals can make use of the sugars provided by the plants in their own cellular energy factories, the mitochondria. ... The energy cycle for life is fueled by the Sun.
What part of the bone produces blood?
Answer:
Bone marrow.
Explanation:
How do Newton's Laws apply to the way an object moves?
Answer:
Force equals mass times acceleration.
Acceleration is directly proportional to force and inversely proportional to mass. This means that if you get pushed, the harder you are pushed, the faster you'll move (accelerate). The bigger you are, the slower you'll move.
The color of a photopigment is due to:_________.a) the season of the year.b) the color of light that it reflects.c) the color of light that it absorbs.d) the color of the leaf.the color of light.
the color of the light
photopigment are unstable pigments that undergo a chemical change when they absorb light
The color of a photopigment is due to the color of light that it reflects.
A pigment absorbs light at a specific range. Every other light not absorbed is reflected by such pigment.The phenotypic color of a pigment is a function of the color of the light it reflects. A photopigment as its name implies is a pigment that has the ability to absorb light to become unstable. An example of pigment and its characteristic color is:Chlorophyll; appears green because it reflects green light and absorbs blue and red.Therefore, the color of a photopigment is due to the color of light that it reflects.Learn more: https://brainly.com/question/17098075?referrer=searchResults
The primary function of the cell wall is to o support and protect the cell. A store DNA. B direct the activities of the cell. C .help the cell move.
Answer:
Support and Protect the cell.
Explanation:
Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply. They reproduced sexually. They were drought resistant. They had traits that were easy to observe. They only had two traits to study.
Answer:
B and D
Part 2 is C
Explanation:
on edge 2020
The following are not reasons Mendel chose pea plants for his experiments:
They were drought resistantThey only had two traits to study.GREGOR MENDEL INHERITANCE:Gregor Mendel is regarded as the Father of genetics because of the immense role he played in the inheritance of traits.Mendel chose pea plants for his experiment due to certain reasons, which include the following:
Easy to grow in the garden.The flowers of pea plants are hermaphrodite.Easy to obtain pure breed plant through self-fertilizationThey possessed easily observable traits. They have excellent disease resistanceTherefore, the following are not reasons Mendel chose pea plants for his experiments:
They were drought resistantThey only had two traits to study.Learn more about Gregor Mendel experiment at: https://brainly.com/question/910732
what does mother nature mean when she says your actions will determine your fate
Answer:
it means choose youre actions wisly because in the future it can effect you
Explanation:
Answer: in My opinion when Mother Nature said that she was appling to what you do and your ’actions’ will affect you overall
Explanation:
During heavy exercise when supply of oxygen to our muscles/cells is insufficient, energy (ATP) is produced by...
Which two thing are found on a molecule of tRNA?
O amino acids; anticodons
ribose sugar, proteins
amino acids; codons
O deoxyribose sugar; codons
Answer:
condoms and sugar
Explanation:
Which two features of igneous rocks are determined by their cooling rate?
color and shininess
shininess and hardness
hardness and crystal size
crystal size and rock texture
On Edge 2020
Answer:
Crystal Size and Rock Texture
Explanation:
Extrusive rocks are also known as volcanic rocks. Igneous rocks are classified according to their texture and mineral or chemical content. The texture of the rock is determined by the rate of cooling. The slower the rock cools, the larger the crystals form.
The two features of igneous rocks are determined by their cooling rate are Crystal Size and Rock Texture. Thus, option D is correct.
What are rocks?Rocks has been known as volcanic rocks. Igneous rocks has been classified just according to their texture including the mineral or the chemical content. The texture of the rock has been determined by the rate of cooling. The slower the rock cools, or the larger the crystals form.
Bioclastic rocks are wholly or partially comprised of compacted plant or animal remains. Bioclastic rocks will often have fossils within them upon discovery. Most sedimentary rocks contain either quartz (siliciclastic rocks) or calcite (carbonate rocks).
Bioclastic sedimentary rocks are clastic sedimentary rocks, where the broken pieces making up all or part of the rock happen to be pieces of biological life forms- most typically, these are shelly fossil fragments. Most bioclastic sedimentary rocks are marine, mostly because very few land animals leave enough remains to survive being transported.
Therefore, The two features of igneous rocks are determined by their cooling rate are Crystal Size and Rock Texture. Thus, option D is correct.
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In the essay box below, submit any observations you made, as well as the answers to the questions above. Then write a summary paragraph describing the effects of mass and distance have on the gravitational force between objects.
What happens to the force between the spheres when you increase the mass of one of the spheres?
What happens to the force between the spheres when you increase the mass of both spheres?
When you have different masses for each sphere, how does the force that the larger mass sphere exerts on the smaller mass sphere compare to the force that the smaller mass sphere exerts on the larger mass sphere.
What happens to the force between the two spheres of the same mass when the distance between the mass spheres is doubled?
What happens to the force between the two spheres of the same mass when the distance between the mass spheres is halved?
The force of attraction between 2 objects is called gravity. Why do you think that an object, like your notebook, pulled towards you? Explain your reasoning.
Answer:
So i just finished doing this project and this what i put, I hope this helps (:
Explanation:
1. When mass 1 increases the force between the objects increases. If Mass 2 decreases, the force between the objects decreases
2. An object with more mass has more/less gravitational force than an object with a smaller mass. Objects that are closer together have more/less of a gravitational force between them than objects that are further apart. The more separation two objects have, the more the force between them decreases.
3. The forces are equal (Newton's third law of motion)
4. The force between the spheres will quadruple
5. ( I dont know what this is )
6. The force of gravity exerted by the notebook on you is negligible
--The force of gravity
If there is a force between all masses, why are you not pulled toward your desk by the desk’s gravity when you walk away from it? Remember that the net force on you determines how your motion changes. The force of gravity between you and the desk is extremely small compared with other forces constantly acting on you, such as friction, the force from your muscles, Earth’s gravity, and the gravitational pull from many other objects. The strength of the gravitational force between two objects depends on two factors, mass and distance. The Mass of the Objects The more mass two objects have, the greater the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.
--The Distance Between the Objects
As distance between the objects increases, the force of gravity decreases. If the distance is doubled, the force of gravity is one-fourth as strong as before.
--Gravity on Earth
The force of gravity acts on both masses equally, even though the effects on both masses may be very different. Earth’s gravity exerts a downward pull on a dropped coin. Remember that every action force has an equal and opposite reaction force. The coin exerts an equal upward force on Earth. Because the coin has an extremely small mass compared with Earth, the coin can be easily accelerated. Earth’s acceleration due to the force of the coin is far too small to notice because of Earth’s large mass. The acceleration due to Earth’s gravity is called g and is equal to 9.8 m/s2 at Earth’s surface. You can calculate the force of Earth’s gravity on an object at Earth’s surface using the object’s mass and this acceleration. The formula that expresses Newton’s second law is F = ma. If you use g as the acceleration, the formula for calculating the force due to gravity on a mass close to Earth’s surface becomes F = mg.
The force between the items grows as mass 1 increases. The force between the objects reduces if Mass 2 decreases.
What is gravitational force?An item with a larger or lower mass will exert a more or less gravitational pull. The gravitational pull between two objects varies depending on how close or far they are to one another.
The force between two items weakens the more apart they are from one another. (Newton's third law of motion) the forces are equal.
Four times as much power will exist between the spheres. The notebook has very little gravitational pull on you, the gravitational force.
Therefore, keep in mind that your motion is affected by the total force acting on you.
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ILL GIVE BRAINLIEST!! HELP PLEASE!
Identify one species that is native to your geographical region in the United States. Speculate on how that species might be affected if they were to live in a warmer and wetter climate and then cooler and dryer climate.
Answer:
I live in the central region of the state of Florida in the Southeastern United States. The climate here is humid subtropical, with a defined rainy season from May through October. This season also sees afternoon thunderstorms that drop heavy but brief summer rainfall.
Florida is home to the largest population of American alligators (Alligator mississippiensis). Alligators are usually found in freshwater. They can only tolerate salt water for brief periods, because they do not possess salt glands to process the salt.
Because of strict conservation measures, the alligator (Florida’s official state reptile) has recovered from its former endangered species status. It remains under threat for habitat destruction because of the construction of water-management systems and increased levels of mercury and dioxins in the water supply. In a warmer and wetter climate, the alligator would be expected to thrive unless habitat destruction continued in that climate. In a cooler and dryer climate, the alligator would suffer from lower temperatures and loss of freshwater habitat.
Explanation:
Plato answer