Answer:
D) In case 1, both PS I and PS II completely lose function; in case 2, a proton gradient is still produced.
Explanation:
The light dependent reaction of photosynthesis, which produces the ATP and NADPH needed in the light independent stage of the process, includes complexes of proteins and pigments called PHOTOSYSTEMS. These photosystems (I and II) are key to the functionality of the light dependent reactions in the thylakoid.
The major pigment present in both photosystems is CHLOROPHYLL A, which absorbs light energy and transfers electrons to the reaction center. Chlorophyll B is only an accessory pigment meaning it can be done without. Hence, if all of the chlorophyll A is inactivated in the algae but leaves chlorophyll B intact as in case 1, both PS I and PS II will lose their function because Chlorophyll A is the major pigment that absorbs light energy in both photosystems.
In case 2, if PS I is inhibited and PS II is unaffected, a PROTON GRADIENT WILL STILL BE PRODUCED because the splitting of water into protons (H+) and electrons (e-) occurs in PSII. Hence, H+ ions can still be pumped into the inner membrane of the thylakoid in order to build a proton gradient even without the occurrence of PS I.
which word means that an organism's cells specialize and change during their lifetimes?
answers choices: grow, evovle, shrink, develop
What three things do plants need to do photosynthesis?
Explanation:
Carbon dioxide light and nutrients
All interactions between the atmosphere and geosphere involve (3 points) soil and living things water and living things soil and gases or particles in air gases or particles in air and water
Answer:
Soil and gases or particles in air
Explanation:
The solid part of Earth is called its geosphere. The geosphere includes the rocks, minerals, and landforms of the surface and interior of our planet.
The atmosphere of Earth is the layer of gases that surrounds it. This layer of gases is what we call the air.
Based on this information, we can conclude that all interactions between the atmosphere and geosphere include the soil and gases or particles in the air.
Which part of photosynthesis is represented by the diagram to the right
Answer:
Light-dependent reactions
Explanation:
Photosynthesis occurs in two stages: light-dependent reactions and light independent-reactions. This last stage is often called Calvin cycle.
The diagram shows reactions occurred in the thylakoid membranes which are located inside the chloroplasts. Therefore, we can identify that these reactions are the light-dependent reactions. During this part of photosynthesis, the energy from the sunlight is absorbed by a pigment called chlorophyl (Chl). Then, it is sequentially coverted into chemical energy stored in the form of molecules: NADPH (nitotinamide adenine dinucleotide phosphate) and ATP (adenosine triphosphate).
Which fossil fuel is made when plants from swamps are covered, pressed and heated for millions of
years?
A Coal
B Petroleum
C Natural Gas
D Nuclear
Answer:
petroleum i think , i may b wrong
Answer: A Coal
Explanation:
O C. mitochondria 2. Where is the major site of photosynthesis in a plant? * O A. the stem O B. the roots O C. the leaves
Answer:
Option C
Explanation:
The answer to this question is option C or "the leaves." The major site of photosynthesis in a plant is where the chloroplasts are located because it contains chlorophyll which is where photosynthesis takes place, chloroplasts is in all the green parts of a plant stem, leaves, and even the branches but it takes place mainly in the leaves of a plant because there is more leaves then roots or branches.
Hope this helps.
Use an example from nature to explain how natural selection causes populations to change as their environment change include the following terms variation trait genes
Answer:
Galapagos finches have various beak sizes that make foraging for food more successful.
Explanation:
Organisms evolve over time due to changes in their genome. These are pontaneous, and occur in DNA at random. These changes are called mutations and form alleles or different forms of a gene.
Over time within a population, the number alleles increase the variation of the population. These variants may confer specific traits within an individual, that may confer a biological advantage.
Thus, the trait may make the organisms more capable of obtaining food, shelter a mate etc. or ensure survival, i.e. they are able to pass on their genes to the next generation.
Which system is responsible for providing structure and support?
nervous
circulatory
skeletal
digestive
Answer:
skeletal
Explanation:
im smart
Answer:
Skeletal
Explanation:
what are the three roles of DNA
CER: Molecules and Extended Structures
How can both of these samples be pure phosphorus?
State your claim. Make sure your claim fully explains how the two samples can both be pure phosphorus. Summarize the evidence you have gathered to support your claim and explain your reasoning.
Answer:
If impurities are removed from the samples, pure phosphorus will be obtained.
Explanation:
Both of these samples be pure phosphorus if the atoms and other impurities are removed from chemical as well as physical means. Pure phosphorus means that there is only atoms of phosphorus present but pure phosphorus is not available because of its reactivity so for that reason it reacted with the oxygen present in the air and formed phosphate molecules and stabilize itself.
water makes up what percentage of our body weight?
Answer:
Water represents between half and two thirds of a person's average weight. Adipose tissue has a lower percentage of water than lean tissue, and women tend to have more fat, which is why the percentage of water in women is lower (52% to 55%) in relation to the average body weight of a male (60%).
Explanation:
Answer:
60% of the body is made up of water
Explanation:
What is the chemical reaction that lactase catalyzes?
Answer:
galactose and glucose
Explanation:
Lactase catalyzes the hydrolysis of the glycosidic bond in the disaccharide lactose, releasing galactose and glucose hope this worked :)
The chemical reaction that is catalyzed by the enzyme lactase is the breakdown of lactose into glucose and galactose. The reaction is as follows:
Lactose → Glucose + Galactose. (in the presence of Lactase). What is a Chemical reaction?A chemical reaction may be defined as a process through which one or more substances known as the reactants are significantly transformed into one or more different substances known as the products in the presence of enzymes of energy.
Lactose is a type of disaccharide which dissociates into glucose and galactose. It is similar to maltose which in presence of an enzyme maltase gives two different compounds of glucose and sucrose in presence of an enzyme sucrase converts into glucose and fructose.
Therefore, the chemical reaction that is catalyzed by the enzyme lactase is the breakdown of lactose into glucose and galactose.
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if you flip a coin 100 times, how many times would you expect to get heads?
Answer:
Well, you expect to get heads 50 times and tails 50 times
Explanation:
1/2 of the coin is heads and 1/2 of the coin is tails
You can expect to get both heads and tails 50 times each
Please mark brainliest! Hope this helped!
5.Which is the first step in photosynthesis?_____.
a.the production of ATP
b.the absorption of light
c.the production of NADPH
d.None of the above
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b. The absorption of light.
Effects of Environmental Factors on Phenotype: examples of physical and social factors
Answer:
Explanation:
environmental factors that effects the phenotype of individual include radiation drugs and pollution because these factors cause mutation in genes which ultimately effect phenotype along with genotype
social factors are thing that effect someone's lifestyle it include wealth religion buying habits education level which effect phenotype
I WILL MARK BRAINLIEST!!
which of the following would likely NOT increase a reaction rate of an enzyme in your mouth that was not yet at optimal conditions?
1)slight increase in temperature
2) neutral ph
3) more enzyme
4) more substrate
5) extremely high temperature
How are aquifers connected to the water cycle?
Answer:
At a certain depth below the land surface, the spaces between the soil and rock particles can be totally filled with water, resulting in an aquifer from which groundwater can be pumped and used by people. Some of the precipitation that falls onto the land infiltrates into the ground to become groundwater.
Explanation:
is what i found on google.
hope this helps!
nerve pathway from finger to brain
Answer:
The nerves of the arm and hand perform a substantial two-fold role: commanding the intricate movements of the arms all the way down to the dexterous fingers, while also receiving the vast sensory information supplied by the sensory nerves of the hands and fingers. The movements of the arms must be fast, precise, and strong to complete the diverse activities the body engages in throughout the day.
Explanation:
Answer:
Receptors, spinal cord, nerves, thalamus, sensory cortex
Explanation:
When you touch an object the Touch receptors receive the stimulation. The impulse from this travels to the Spinal Cord through the sensory nerves. Those nerves come into contact with others, sending it to the thalamus and sensory cortex.
What would best describe the structure of the plasma membrane?
1.rigid (not flexible)
2.gaseous
3.solid
4.fluid (flexible)
Answer:
4. Fluid (Flexible)
Explanation:
Plasma membranes must be very flexible in order to allow certain cells, such as red blood cells and white blood cells, to change shape as they pass through narrow capillaries. The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Which class contains colonial polyps that are spcialized for different jobs?
O Hydrozoa
O Scyphozoa
O Cubozoa
O Anthozoa
Answer:
a
Explanation:
Answer:
I Think its Hydrozoa not 100% sure
4. Compare and contrast the role of plants in the carbon and nitrogen cycles.
Answer: There are many important processes in the carbon cycle that primarily relate to ... CO2 is absorbed by various plants and vegetation and converted into carbohydrates via photosynthesis. ... The nitrogen cycle takes place in Earth's various "spheres" ... What is the difference between Carbon 12, 13, and 14?
1 answer
Explanation:
Nitrogen cycle
This is the combination of the biological, chemical and geological aspects of the elements in the nitrogen cycle. The main component of this cycle is Nitrogen and has a relationship between the different habitats in the ecosystems.
Carbon cycle
This cycle is a biogeochemical one that interchanges carbon with other elements in the atmosphere, biosphere, etc of the Earth. here, plants and animals share resources and have a relationship that helps both of them to function well.
The roles of plants in carbon cycle
Plants perform the functions of:
Absorbing the sunlight through photosynthesis to produce their foodKeeping the air clean from harmful substancesTurning to fossil fuel, etcThe roles of plants in nitrogen cycle
Plants perform the functions of:
Absorbing nitrates in order to make proteinThey serve as food to animalsThey increase the value of the soil b acting as fertilizers,etcRead more here:
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In your Punnett Square activity, you chose beads which represented
genes and used Punnett Squares to determine possible offspring. If
your first parent genotype was yellow bead and blue bead and the
second parent genotype was blue bead and blue bead, how many
offspring out of 4 have the yellow kernel phenotype?
please please!!
Answer:
Two out of four offsprings have the yellow kernel phenotype.
Explanation:
The information that we have is that one parent's genotype is yellow bead (Y) and blue bead (B), and the other parent's genotype is blue bead (B) and blue bead (B).
Parent 1: YB
parent2: BB
If we make a Punnett Square, we can see that two out of four offspring will have the yellow phenotype.
║ B ║ B ║
Y║ YB ║ YB ║
B ║ BB ║ BB ║
The offspring out of 4 have the yellow kernel phenotype in the given case would be - two or 50%
We are given that the kernel color is represented by two beads, yellow and blue beads.
Let us consider yellow bead be represented as Y and blue bead be represented as y. Yellow color is dominant over blue kernel color.parent 1 has a genotype of a yellow bead and a blue bead represented as Yy.parent 2 has a genotype of the blue bead and blue bead, i.e, yy.The cross can be given as,
Genotype Y y
y Yy yy
y Yy yy
Now, two of the four offspring have Yy genotypes.
Thus, 2/4 or 50% of the offspring have a yellow kernel phenotype.
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Fill in the blanks with the available words:
All organisms _____ (with its unique elemental composition), and all are _____ related to one another. Species _____ might defer more than others, though. We might also predict that the more similar the percentages of _____ elements are in two species, the _____ closely related those two species are.
WORDS
•evolved on earth
•less
•more
•living under unusual conditions
•trace
•genetically
•naturally occurring
•essential
•evolved on earth
Answer:
all organism evolved on earth, and all are genetically related to one another. Species living under unusual conditions might defer more than others, though. We might also predict that the more similar the percentages of naturally occurring elements are in two species, the more closely related those two species are.
Explanation:
this is what i am assuming the answer could be :)
Electrical energy is:
the energy form originated by electromagnetic waves or fields
the energy type due to the movement of electrons
the energy form which is present in vibrations of air
Answer:
The energy form originated by electromagnetic waves or fields.
A group of students wanted to know if millipedes prefer moist or dry environments. They suspected that millipedes would prefer moist environments because they had observed that millipedes are usually found under decaying logs.
Answer:
The suspicion of the students are very correct. Millipedes prefer damp environments. They need water moisture to survive.
Explanation:
Millipedes are known as arthropods. An Arthropod is an animal without a spinal vertebra, which possesses a segmented body, paired jointed appendages, and an exoskeleton.
They are found to be very ardent and quicker at recycling natural waste than animals and plants.
Without adequate moisture, Millipedes can die within 48 hours.
Cheers!
Birds belong to different species but share similar characteristics. What inference can be correctly drawn about this statement? (5 points)
Group of answer choices
All birds share the same habitat.
All birds produced similar offspring.
All birds reproduce with genetic variation.
All bird species adapt through evolution
Answer:
All bird species adapt through evolution
Explanation:
The correct answer would be that all birds reproduce with genetic variation and adapt through evolution.
Sexual reproduction causes genetic variation in sexually reproducing organisms due to crossing over and a random assortment of genes. Birds can only reproduce sexually and hence. they produce offspring that are genetically different but that might share many similar characteristics.
Evolution refers to the development of complex organisms from simple ancestral ones. Organisms change and evolve as they constantly try to adapt to their changing environments. Hence, organisms of the same species growing in a different environment might end up becoming different species as a result of adapting to their different environments, although they would still have some similarities to one another. In other words, evolution has a tendency to cause speciation.
A skin cell divides to make a new skin cell. Which component of cell theory does this best illustrate?
All living things are made of cells.
Cells are the basic unit of structure and function of all living things.
All cells come from other cells.
Cells are generated from nonliving materials.
Answer:
its C
Explanation:
all cells come from other cells
1. If you flipped two coins simultaneously, for a total of 8 times, how many times, on average, would you expect to get two tails?
2. What was the percent deviation of tails when 10000 observations were made?
3. What was the percent deviation for tails when the coin was tossed 10 times? To get the percent deviation for tails, take the number you recorded for deviation, multiply by 100, and divide by the "expected results"
4. In the 10000 coin flips, you completed the "expected" column, and a value was given for the "observed results" column. What was the deviation for heads?
5.
Which biomolecule provides the instructions to build enzymes?
A. Carbohydrates
B. Lipids
C. Nucleic acids
D. Proteins
Proteins are the building blocks of enzymes, and proteins are made up of amino acids that are linked together in one or more polypeptide chains. Therefore, option (D) is correct.
What are enzymes?Enzymes are proteins that aid in the acceleration of metabolic processes, also known as the chemical reactions that take place in our bodies. They are responsible for the creation of some chemicals while also decomposing others. Enzymes are present in everything that is alive. Enzymes are something that are produced by our bodies spontaneously.
Enzymes regulate most biochemical reactions in animals, plants, and microbes, thus there are many examples. Animal digestive enzymes are well-known. Gastric juices break down food with the enzyme pepsin. Salivary amylase turns starch into sugar, starting digestion.
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Which organisms use photosynthesis to make their own food