Which event occurs in photosystem I?(A Water molecules are broken apart.
(B Light energy excites electrons.
(C Oxygen is released as waste.
(D Electrons are transferred to ferredoxin.

Answers

Answer 1

Answer: The answer is D) Electrons are transferred to ferredoxin.

Photosystem I is the part of photosynthetic light reactions. It is membrane protein complex which uses light energy to transfer electron from plastocyanin to ferredoxin.

Answer 2

Answer:

Answer:

the correct answer from the choices listed above is option D. The event that happens in photosystem I is that electrons are transferred to ferredoxin.

Explanation:

This is a part of photosynthetic light reactions which makes use of light energy to transfer electrons from plastocyanin to ferredoxin.

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Which type of bond is found in many carbon-to-carbon bonds in canola oil, but very few carbon-to-carbon bonds in butter? 1) C–C 2) C=C 3) C=H 4) C–H

Answers

The answer is (2) C=C. The butter is saturated fatty acids with only single bond between carbon atoms and has high melting point usually solid at room temperature. The canola oil is unsaturated with many double bonds between carbon atoms and has low melting point.

However , some people were able to survive. Why did some people survive

Answers

Answer:

brains that helped them adapt to unstable, shifting landscapes

Explanation:

Describe Root Hair Cell: 1. Function 2. Specialization

Answers

Final answer:

Root hair cells are specialized cells found in the root epidermis of plants, which have a function of absorbing water and minerals from the soil.

Explanation:

Root hair cells are one of the most specialized cells of a plant, with long, thin protrusions extending out of the cell that increase the surface area available for absorption of nutrients. These cells are specifically adapted for their function of absorbing water and minerals from the soil.

The thin cell wall and large central vacuole in the root hair cell allow for the diffusion of water and minerals into the cell. Additionally, the presence of numerous mitochondria in the cell allows for active transport of ions against a concentration gradient, which is required for the absorption of some minerals.

The specialization of root hair cells is not limited to their morphology, but also extends to their gene expression. Several genes have been identified that are specifically expressed in root hair cells, and they play a crucial role in the development and function of these cells.

Overall, root hair cells are a crucial component of plant nutrition, and their specialized structure and function allow for efficient uptake of water and minerals from the soil.

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A certain plant has a color that can range from green to yellow. Some plants are very green, and some are very yellow, but most are in between. What is most likely true about this trait? A. The color is a Mendelian trait. B. There are only two alleles for color. C. Being yellow is a recessive trait. D. There are several genes that control the color.

Answers

Because there are not strictly green and yellow plants, this means that the color can be affected by multiple genes. If it was only affected by one gene then you would see only the two groups for the color, green and yellow. The answer is D.

Answer:

The answer is D

Explanation:

The study of biology would be most helpful in finding a solution to which problem?

Answers

Crop loss from fungus is the problem in which the study of biology will be most helpful in finding a solution. Biology is the study of liivng and non living things or any organisms that deals with the environment, and this kind of problem is somewhat related to environment.

Answer: crop loss form fungus

Explanation:

It’s B i took the test

The process of natural selection is based on the assumption that:(1) environmental changes will cause changes in body structure in individuals
(2) most changes from generation to generation are the result of mutations
(3) part of the population of organisms always remains stable
(4) different traits inherited by offspring have different survival value

Answers

Answer:

Option B, most changes from generation to generation are the result of mutations

Explanation:

Through the process of evolution, an individual changes from one generation to other generation. These variations are caused by genetic changes.

Genetic variations are caused by -

a) Genetic mutation

b) genetic recombination

Genetic variation leads to alteration of gene or protein function due to which differences traits arises in an organisms. Thus , it can be said that genetic mutation brings variation in structure and thus leads to evolution of any species.

As long as generations of individuals with the newly developed trait continues to mate and reproduce, new trait becomes common in a population.

Hence, option B is correct

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