Answers
Answer:
The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
Related Questions
Differentiate between population density and population distribution.
Answers
Answer:
population distribution is used to describe how people are spread across a certain area while population density is the number of people living in each unit of an area
Explanation:
hope that answers your question
Membranes consist of many different types of fatty acids, which confer different properties, including membrane fluidity. Which of the following fatty acids is the LEAST adaptive to maintaining a fluid membrane at cold temperatures?
a)Myristoleic CH3(CH2)3CH=CH(CH2)7COOH
b)Arachidonic CH3(CH2)4CH=CHCH2CH=CHCH2CH=CHCH2CH=CH(CH2)3COOH
c) Caprylic CH3(CH2)6COOH
d) Linoleic CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH
Answers
The correct answer is Myristoleic CH3(CH2)3CH=CH(CH2)7COOH
Factors affecting membrane fluidity are:
The mosaic structure: The essential lipids and proteins are independent but loosely bound molecules that are present in the membrane.The phospholipids: The phospholipid tails' fatty acids are in their saturated form, which is devoid of double bonds between nearby carbon atoms and saturated with attached hydrogen atoms. As a result, the tails are mostly straight. Unsaturated fatty acids, in comparison, do not have the greatest amount of hydrogen atoms, but they do include some double bonds between nearby carbon atoms; a double bond causes the string of carbons to bend by around 30 degrees. Therefore, if straight-tailed saturated fatty acids are squeezed by lowering temperatures, they press in on each other to create a dense and reasonably rigid membrane. When unsaturated fatty acids are squeezed, the "kinks" in their tails push nearby phospholipid molecules apart, preserving some distance between them. At temperatures where membranes containing saturated fatty acid tails in their phospholipids would "freeze" or "solidify," this "elbow room" aids in maintaining fluidity in the membrane.In a chilly climate, the relative fluidity of the membrane is crucial. Membranes made primarily of saturated fatty acids are often compressed in a cold environment, becoming less fluid and more prone to rupturing.Thus, the correct answer is Myristoleic.
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What is the genotype and phenotype ratios for F2 from last punnet square?
Answers
Answer:f2 is better
Explanation:
How can consumers influence businesses to be more environmentally sustainable?
Question 32 options:
buying the cheapest products to stretch your personal budget
buying more fair trade items to ensure methods support sustainable practices and social justice
buying any item with an “environmentally friendly” label on it
buying a product instead of renting or borrowing
Answers
Answer:
Explanation:
B. buying more fair trade items to ensure methods support sustainable practices and social justice.
This is because buying fair trade items often means that the methods used to produce the item are more environmentally sustainable and socially responsible. Consumers can also influence businesses to be more environmentally sustainable by supporting and purchasing from companies that prioritize sustainability and by encouraging companies to adopt more sustainable practices through feedback and advocacy.
Assertion (A): Birds have hollow bones and stream lined bodies.
Reasoning(R): Hollow bones are the only feature, which enable the birds to fly.
a.Both A and R are true and R is the correct explanation of A
b.Both A and R are true but R is not the correct explanation of A
c.A is true but R is false
d.A is false but R is true
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Answer: it is A.
Explanation: because they are both about the birds bones and birds need to fly if they don't have bones they can not fly
What are the best techniques for anchoring aquarium plants in substrate to ensure their healthy growth?
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A few techniques that can be used to anchor aquarium plants in substrate for healthy growth includes; Tieing the plant to a rock or piece of driftwood, Using plant weights, Planting the plant in a pot and Using aquarium glue.
How would you use the above mentioned techniques to anchor aquarium plants?Tying the plant to a rock or piece of driftwood: This method works great for plants with rhizomes, like Anubias and Java Fern, as you mentioned.
Planting the plant in a pot: Some plants can do well when planted in pots with their preferred substrate. This is good because it is in a controlled enviroment and you can move plant without disturbing the plant.
plant weights: This method is said to be okay for buoyant plants that tend to float away before their roots can establish. However this can be disadvantagous if the weight is made with lead.
aquarium glue: This can be very effective for certain types of plants. It's important to use a glue that is safe for aquarium use (i.e., cyanoacrylate-based glues).
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Which statement about a catalyst is correct?
1) A catalyst slows down a chemical reaction.
2) A catalyst speeds up a chemical reaction.
3) A catalyst has no affect on a chemical reaction.
Answers
Answer:
choice 2
Explanation:
because the catalyst reduces the activation energy of the reactants so the reaction then requires lower energy to occur then the reactents reach that energy in shorter time so the reaction takes shorter time .
What are some societal examples of primitive thinking in adults, consequences, and potential solutions?
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We quickly come to the conclusion that adult thinking organises our adaptation to the world in situations that are extremely complex if we consider the kind of activities it performs.
Which societies would you consider to be primitive?Primitive society was divided into seven cross-references in the 1968 Encyclopedia, including Anthropology, Culture, Evolution, Hunting and Gathering, North American Indians, and—the main entry—Tribal Society.
Examples of primitive thinking what?They will understand, literally speaking, what killed a man, for instance, if a tree falls on him. Nevertheless, they will also want to know why the tree fell on him specifically and not on anyone else, or why it killed anyone at all.
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5. The following reaction between fluoroacetamide and thiol usually does not occur as an organic reaction. However, researchers have made it work when they incorporated fluoroacetamide into a protein as a side chain of an unnatural amino acid, which then reacted with a cysteine residue of another protein when these two proteins formed a complex. (a) Explain why the given organic reaction does not work. (b) Explain why fluoroacetamide reacts with cysteine in the protein complex. The direct participation of other amino acid residues in the reaction is negligible
Answers
Answer:
Following are the responses to the given points:
Explanation:
In point a:
Its reaction provided is indeed a type of radioactive substitution reaction. Its fluoride group (F group) is a poor leaving group, in which carbon atoms attached to the carbon atom reducing their energy. Thus fluoride group replacement becomes complicated again for the thiol group.
In point b:
When fluoroacetamide is blended with cystine, they associate due to the proximity of ligands, resulting in the formation of a complex of hydrogen bond proteins.
Females have two of which reproductive structure? A. Uterus B. Vagina C. Urethra D. Ovary
Answers
Answer:
A and B
Explanation:
Answer:
we have two ovary's so D.
Explanation:
hope this helps :)
20. Geneticists creating the "glow in the dark" or fluorescent rabbit, inserted the GFP gene
from a jellyfish that makes it glow. The geneticist studied these rabbits to learn how....
(1 point)
A)to create a new energy source
B)to create interesting looking pets.
C) the florescent cells can help track the movement of cells.
D) to create light in a dark laboratory.
Answers
The correct answer is C) the fluorescent cells can help track the movement of cells.
Explanation:
In the last years, geneticists and scientists created animals that glow in the dark by inserting a Green Fluorescent Protein or GFP gene found in some species of jellyfish. This protein was used in animals such as rabbits, rats, and even chickens. One of the key reasons for this is that by inserting fluorescence scientists can better observe the development and movement of cells. This includes analyzing cells reproduction and growing in embryos of "glowing" animals or inserting the protein in specific cells or organs in an organism to observe how these change or move. Thus, the purpose of studying fluorescent rabbits is that "the fluorescent cells can help track the movement of cells".
what is an example of a cell using active transport
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As we know active transport implies the movement of chemical compounds/ions across the membrane using energy (ATP) to do so. One of the most common examples of active transport is the kown sodium-potassium pump, a mechanism that is found in all animal life forms. Another example is plant root cells, these need to absorb mineral salts from the ground, however, these salts tend to be very diluted so active transport allows these salts to be absorbed by the plants against the concentration gradient.
Which period had the greatest increase in the number of EXTANT species? A) MesozoicB) Paleozoic C) PermianD) Cenozoic
Answers
Analyzing the periods of Earth's history, we can see how many species sought to increase and adapt to the environment in which they were.
The period that has the largest number of species is the Cenozoic period which is marked by a great evolution of mammals and vast marine life.
Therefore, the answer is Cenozoic, alternative "D".
In parts of the Northern Hemisphere grasslands, the spring growing season is becoming two weeks longer than in the second half of the 20th century. The spring growing season is now coming earlier in both hemispheres. Based on the above statement and the following graph, what conclusion can be made regarding temperature?
Answers
Answer:
Natural Earth cycles result in increased temperatures
Explanation:
By temperature looking te the graph we can see that there is a soft increase in temperature from 1880- 1940. It seems that from 1940-1980, the temperature was stable, but since 1980 there is a noticeable temperature increase, until the year 2000. By year there are increases and decreases in temperature, which correspond to the different seasons and temperature cycles over the year, but in a general vision, the temperature is obviously increasing with the pass of years.
According to the statement, the spring growing season is becoming longer than in the second half of the 20th century, and it is coming earlier. This is reflected in the graph from the year 1980 to 2000.
According to the graph and the statement, we could estimate what is going to happen in the next years is there is no change. Although, we can not predict it for sure.
Name this animal.
Hint: It's a fox and it's very rare.
Answers
Answer:
That's a Darwin's fox.
Explanation:
Which statement best describes what happens during mitosis
Answers
Answer:
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Answer:
the nucleus divides into two identical nuclei
Explanation:
Which statements describe mass or weight measured in newtons
Measured in kilograms
Does not change when gravity changes
Changes when gravity changes
The amount of matter in something
A gravitational pull
Answers
The statement that best describe mass and weight is that there are both measured in kilograms.
What is mass of an object?Mass is a scalar quantity that measures the amount of matter in an object. It is a fundamental property of an object and is determined by the number of particles and their arrangement in the object.
Mass is often used interchangeably with weight, but they are different concepts. Weight is the force that an object experiences due to gravity, and is proportional to its mass and the local acceleration due to gravity. Mass is a constant, whereas weight can vary depending on the strength of the gravitational field.
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Which cranial nerve activates the chewing
muscles?
trigeminal
trochlear
abducens
optic
oculomotor
olfactory
Answers
Answer:
Trigeminal-Somatosensory information (touch, pain) from the face and head; muscles for chewing.
To move charges there needs to be a motive or
Answers
To move charges, there needs to be a motive or a driving force that facilitates the flow of electric charges through a conductor. This motive can be provided by various factors and mechanisms.
One of the primary motives for the movement of charges is the presence of an electric field. An electric field exerts a force on charged particles, causing them to move in a particular direction. This force can be generated by applying a voltage difference across a conductor, creating an electric potential difference. The charges will naturally move from an area of higher potential to an area of lower potential, driven by the electric field.
In addition to electric fields, other motives for charge movement can include electromagnetic induction, where a changing magnetic field induces a current in a conductor, and chemical reactions, such as in batteries or fuel cells, where the conversion of chemical energy into electrical energy creates a motive for charge flow.
Ultimately, the motive for moving charges is provided by the presence of a force or potential difference that can overcome any resistances or obstacles in the conductor, allowing the charges to move and establish an electric current.
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the meaning of photosynthesis in paragraph
Answers
Photosynthesis is a biological process that occurs in plants, algae, and some bacteria. It is the process by which these organisms convert light energy from the sun into chemical energy in the form of glucose (a type of sugar).
Mom is homozygous dominant for brown eyes and dad is homozygous recessive for blue eyesWhat is the probability that the offspring will have the dominant phenotype
Answers
The probability that the offspring will have the dominant phenotype is 100% or 1.
Probability in geneticsIf the mom is homozygous dominant for brown eyes (BB) and the dad is homozygous recessive for blue eyes (bb), their genotype combinations for eye color would be:
BB x bb
Bb Bb Bb Bb
Since the dominant phenotype (brown eyes) is expressed when at least one dominant allele is present, the offspring's genotype can be either Bb (heterozygous) or BB (homozygous dominant). Both genotypes would result in the dominant phenotype.
The probability of the offspring having the dominant phenotype is 100% or 1, as all possible combinations of the parents' alleles will result in the expression of the dominant trait.
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Which part of the cell membrane prevents the cell from dissolving in water?
Answers
Answer:
Hydrophilic I believe I’m not sure
Explanation:
What causes the earths cycle of the day and night? Select the words from the drop down menus to correctly complete the explanation.
Answers
Answer: The cycle of day and night on Earth is caused by the rotation of the Earth on its axis. As the Earth rotates, different parts of the planet are exposed to the Sun's light, causing daylight in some areas and darkness in others.
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18:55
A hypothesis is _______.
a.
a proposed solution to observed phenomena
b.
a question derived from observed phenomena
c.
a testable explanation for observed phenomena
d.
generated as the final step in scientific inquiry
Answers
A hypothesis is a testable explanation for observed phenomena (option C).
What is a hypothesis?A hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
A hypothesis is usually constructed prior to the experiment and is a statement that takes the 'IF, THEN' format.
A hypothesis must be subjected to experimentation to affirm it's validity and can either be rejected or accepted. Therefore, option C is correct.
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What is gravity’s role in plate tectonics?
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Answer:
Gravity causes them to slide downwards
gravity causes
1. everything to be pulled to the center
2. earth's tectonic plates to move
3. one plate to go under another plate
4. the plate that went under to go into the mantle
realonomicsnet
msnucleusorg
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Which of the following is used to represent a dominant trait in a Punnett square?
A- An uppercase letter
B- A lowercase letter
C- A shaded square
D- A shaded circle
(if u answer pls have a explanation thanks :))
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in which amino acid imidazole group found
Answers
Answer:
Histidine contains imidazole group which can be uncharged or positively charged, depending on its local environment. Lysine & arginine contains positively charged R group while glutamate has negatively charged R group.
Please help me anyone ?!!!! ())).
Answers
Rusting of iron and cutting an onion are both examples of chemical changes.
How to explain the chemical changeRusting of iron is a chemical change because it involves a reaction between iron, oxygen from the air, and water. The iron reacts with oxygen to form iron oxide, commonly known as rust. This process is irreversible, and the chemical composition of the iron is altered during rusting.
Cutting an onion is also a chemical change because it involves the disruption of the onion's cell structure and the release of enzymes. When you cut an onion, enzymes stored within the cells are released, reacting with certain compounds to produce sulfur compounds. These compounds are responsible for the pungent smell and the tears that occur when cutting an onion. The cutting process causes a chemical transformation in the onion's composition, making it a chemical change.
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What is the purpose of beach nourishment? Select the two correct answers. (1 point)
O to mitigate beach erosion for a period of time
O to replenish sand on a beach U to help ocean life survive after beach erosion
O to stop all beach erosion from occurring
O to remove sand from a beach to offshore
Answers
The purpose of beach nourishment is
B. to replenish sand on a beach
A. to mitigate beach erosion for a period of time
Beach nourishment is the process of placing additional sediment on a beach or in the nearshore. A wider and higher beach can give storm protection for coastal structures, create new habitates, and strengthen the beach for recreation.
The purpose of beach nourishment is
To mitigate beach erosion for a period of timeTo replenish sand on a beach U to help ocean life survive after beach erosion.What is Beach nourishment?This involves the addition of extra sediment on a beach or in the nearshore.This is usually facilitated by wind and water.
Beach nourishment helps to check erosion and replenish sand and other nutrients.
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An invasive species, the spiny water flea, was recently found in a New York lake. These water fleas eat zooplankton, a food also consumed by native fishes. The fleas spread from lake to lake by attaching to fishing lines, anchor ropes, and boats. Which statement best describes the effect of the water flea on the lake?
Answers
The introduction of the spiny water flea into the lake is likely to have a negative effect on the balance of the native ecosystem, as the water fleas will compete with native fish for resources such as zooplankton, and may disrupt the existing food chain.
What is a Water flea?A water flea is an aquatic crustacean. Normally, it is a member of the order Cladocera, meaning it has a small body, two antennae, and a single shell (a carapace) over its back. Water fleas move by using the hair-like setae which are located on their legs. They are an important part of aquatic ecosystems as they are used as food by other aquatic organisms. They also help to clean up organic matter in water bodies, thus improving water quality.
What is a zooplankton?A zooplankton is a microscopic or tiny aquatic animal, usually found in oceans or freshwater bodies. They are usually very small in size and typically feed on phytoplankton. Zooplankton are key components of aquatic food webs and are a vital part of the aquatic environment. They are also important for carbon cycling, filtering pollutant particles from the water, providing food for fish and other aquatic organisms, and providing a food source for larger predators.
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