Answer:
Viruses are a limitation to cell theory
Explanation:
According to cell theory, all cells arise from pre - existing cells. But viruses lack any membranes and do not show the characteristics of life unless they enter a living body and use its cell machinery to multiply.
The law of conservation of energy states that energy cannot be created or destroyed, but energy can change:.
Hemoglobin is a quaternary protein
structure on a red blood cell involved in
oxygen transport. Hemoglobin A1 has two
a-chains and two ß-chains. Hemoglobin A2
has two a-chains and two & chains. In spite
of the structural differences, both
hemoglobin A1 and A2 perform the same
functions.
Which of the following statements explains
why both hemoglobin types perform the
same functions?
Answer:
hemoglobin binds to oxygen and releases it near cells that are performing cellular respiration
Answer:
The amino acid sequences changed the alpha and beta chains because of molecular interaction.
This pedigree tracks a recessive trait. What could person 3's genotype be?
Select all possibilities,
Based on the pedigree and the recessive nature of the trait, it can be concluded that the genotype of Person 3 is Aa.
What is recessive trait?A recessive trait is a trait or character encoded by a recessive gene.
A recessive trait does not appear in every generation bit only appears in the absence of the dominant trait.
From the pedigree shown, the recessive trait is h0m0zygous in 2 while 1 is heterozygous for the trait.
Person 3 is heterozygous recessive for the trait too.
Therefore, the genotype of person 3 is Aa.
Learn more about recessive traits at: https://brainly.com/question/800811
Which best describes how the photosystems are used in the light-dependent reactions?
photosystem I is used first then photosystem II
photosystem II is used first then photosystem I
Both processes are used at the same time.
Both processes are used during the light-independent reactions.
Answer:
B. photosystem II is used first then photosystem I
Photosynthesis is a series of metabolic reactions that convert sunlight, water and CO2 into sugar and oxygen. The reactions in photosynthesis can be divided into light-dependent and light-independent reactions.
The statement "photosystem II is used first then photosystem I" BEST describes how the photosystems are used in light-dependent reactions.Photosystem I (PSI) and photosystem (PSII) are protein complexes localized in the thylakoid membrane of the chloroplast.During light-dependent reactions, energy from sunlight is absorbed by chlorophyll of the photosystems. Subsequently, this energy is then converted into chemical energy (ATP and NADPH), a process that involves the transference of electrons.Both photosystem I and photosystem II contain pigments to collect sunlight energy and a reaction center in which excited electrons can be transferred from chlorophyll to an electron acceptor.Photosystem II is upstream in the electron flow pathway, but this photosystem (PSII) was discovered after photosystem I.Subsequently, electron flow is coupled to the generation of an electrochemical proton (H+) gradient across the thylakoid membrane, which is used to synthesize ATP by an ATP synthetase.In conclusion, the statement "photosystem II is used first then photosystem I" BEST describes how the photosystems are used in light-dependent reactions.
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Which of the following is a common health consequence of limited physical activities and no exercise?
Increased risk of Type 2 diabetes and heart disease
Slower reaction times and blurred vision or speech
Increased risk of cancer due to UV light sensitivity
Stronger immune system and decreased illness
Increased risk of Type 2 diabetes and heart disease is a common health consequence of lack of physical activities and Exercises.
Physical activities and Exercises.Physical activities and Exercises refer to various body movements or activities that are carried out by individuals for good health and well-being.
Some of these activities or exercises including dancing, walking,cycling, jumping, playing and so on.
Therefore, Increased risk of Type 2 diabetes and heart disease is a common health consequence of lack of physical activities and Exercises because these activities help to burn fat and excess glucose. It improve the proper conditioning of the heart and gives vitality to the body. Type 2 diabetes is as a result of too much accumulation of glucose that are not burn.
Learn more about physical activities and Exercises from the link below.
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Answer: The answer is A.
Explanation: Took the test
humans activity can destroy coral reefs. Because so many organisms depend on the coral reef, this can have a negative effect on the shallow oceans water. Which of the following solutions will offer the best way for humans to repair the damage and improve the health of this ecosystem.
Which of these is dictated by the law of supply and demand?
1) oil
2) renewable resources
3) biodegradable resources
4) air pollution
The law of the supply depends on the demand and need of the resource in the market for various uses. Oil (non-renewable) is dictated by the law of supply and demand. Thus, option 1 is correct.
What are non-renewable resources?Non-renewable resources are limited resources that are not easily replenishable as it takes a very long time for them to be produced. Oil is a fossil fuel and a non-renewable resource that has limited supply and follows the demand.
Renewable resources like wind, water, soil, etc., are infinite in number and hence they are not balanced by demand and supply. On the other hand, air pollution has no demand and biodegradable resources do not dictate the demand-supply law.
Therefore, option 1. oil being a non-renewable resource is dictated by the law of supply and demand.
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Air flowing from Alaska and the North Pacific push ocean waters, but instead of flowing directly south, they flow to the west. Why is that?
•Because of ocean currents
•Because of ocean tides
•Because of the rotation of the Earth
•Because of the marine life living in the ocean
how do alleles influence inherited traits?
Answer:
They can determine if a trait is recessive or dominant, which means in can determine what will show up in the offspring.
Which of the following statements regarding the heart is NOT TRUE?
a.
It is situated between the lungs in the thoracic cavity.
b.
Your heart is approximately the size of your fist.
c.
Approximately 2/3 of its mass lies to the right of the body’s midline.
d.
The apex of the heart rests on the diaphragm.
e.
The base is where major blood vessels enter and exit the heart.
Answer:
a is the correct answer
Goodmorning, I don’t remember what it is, can some one help me
Answer:
u8y0y8y80fy8f8hhjofstill
Cell Differentiation and Specialization
Pre-Test
Active
2
3
4
5
6
7
8
10
Which type of cell is capable of self-renewal?
O stem cell
O blood cell
O muscle cell
O neuron
Answer:
blood cell
Explanation:
because bloodcell rotating all over the body
Answer: Stem Cell
(Got it right on edg.)
In the chemical equation for photosynthesis, carbon dioxide and water are converted to glucose and oxygen.
6CO2 + 6H2O ® C6H12O6 + 6O2
Which component could be added to complete this chemical equation?
light energy
ATP and NADPH
chemical energy
rubisco
Answer:
The answer would be light energy.
Explanation:
Photosynthesis also needs sunlight as well as oxygen and carbon dioxide.
It also needs light energy
Answer:
A) Light energy
Explanation:
photosynthesis is 6CO2+6H2O→C6H12O6+6O2. 6CO2+6H2O→C6H12O6+6O2. In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll.
Please answer both these questions separately!!!!
1. List and define six important physical properties of the soil.
2. Explain how a soil series differs from a land capability class.
Answer:
it help in the fertilization of plants upper most layer of the Earthserves as manurehuman activitieshuman resourcesshelterWill be marked brainliest
Say something nice
You're a gift to those around you. You're a smart cookie. You are awesome! You have impeccable manners. People would always want to be your friend! you are always cool .
If the entire universe was shrunk down to the size of Earth, how big would our galaxy be?
A. The size of a car.
B. The size of a city block.
C. The size of an apple.
D. The size of a piece of dust.
Answer:
D. The size of a piece of dust.
Which of the following is NOT a type of renewable energy?
A: Solar
B: Biomass
C: Nuclear
D: Geothermal
Which stage of the cell cycle is the stage where the nucleus of the cell divides?
Answer:
Mitotic | Anaphase
Explanation:
What is the test variable in science
Answer:
Anything that can change
Explanation:
Arteries near the heart expand as blood rushes in after each contraction. Which component in the arteries allows this expansion? (2 points)
Connective tissue in the tunica media
Smooth muscle in the tunica media
Endothelium in the tunica intima
Elastin protein in the tunica intima
Answer: The elastic connective tissue
Explanation: Allow stretched tissues to recoil as pressure is reduced
Answer: D
Explanation:
What are the steps in the Carbon Cycle? What elements or things are only found in this cycle?!
How is the Carbon Cycle similar to the Water Cycle? Where do they both take place?
What terms or steps are only found in the Water Cycle?
What are the steps in the Nitrogen Cycle? What terms or steps are only found in the Nitrogen
Cycle?
What similarties can be found between Nitrogen and Phosphorous? What do they both include?
Who benefits from these cycles?
What are the steps or terms can only be found in the Phosphorous Cycle?
How are the Water and Phosphorous Cycle related? What elments do they both include?
How is the Carbon Cycle similar to the Nitrogen Cycle What do they all have in common?
1. One way that the carbon cycle is similar to the water cycle is that they're both Biogeochemical cycles.
I'm not sure on the rest, I hope this helped
HELP................
Answer:
B
Explanation:
what are the two alleles for flower color in snapdragon
Answer:
In snapdragons ,the colour of the flower is controlled by incomplete dominance.The two alleles are Red(r) and white.
what is qualitative in biology
Answer:
To describe or define the characteristics of measurements, or recations.
state the principal of independent assortment below
The Law of Independent Assortment states that during a dihybrid cross (crossing of two pairs of traits), an assortment of each pair of traits is independent of the other.
Explanation:
Hope it helps you!!Which describes slate? non-foliated igneous does not split into layers grains arranged in parallel layers
The answer is D. Grains arranged in parallel layers.
Answer:
D. arranged in parallel layers
Explanation:
I just took the test and if you see an image of slate then you will see it is arranged with parallel layers.
HOPE IT HELPS!!!
whats a solid in science definition
Answer:
A solid in science is one of the 3 matters. It stays in one shape unlike a liquid.
Explanation:
Which word is a synonym for leave?
Sprout
Depart
Enter
Return
Answer:
B
Explanation:
This is an English subject, not biology. But the answer is Depart.
Depart is a synonym for leave.
how many plat and animal species do wildlife experts estimate are endangered
Which of the following layers of the atmosphere where the molecules are gravitationally bound to that body?
a.
Thermosphere
b.
Exosphere
c.
Stratosphere
d.
Mesosphere
Answer:
b.
Explanation:
The air in the exosphere is very thin, and is made up mostly of helium, and hydrogen which traces other gases such as atomic oxygen and carbon dioxide.