Which biomolecule forms the cytoskeleton in cells? A Lipids
B Carbohydrates
С Proteins
D Nucleic Acids

Answers

Answer 1

Answer:

The cytoskeleton is the internal structure that maintains the shape of the cell and is made up of proteins that polymerize into filamentous structures.

What are proteins?

They are biomolecules made up of structural units called amino acids.

The cytoskeleton is a protein-based system found in cells that provides internal support and is constructed of three main types of filaments (proteins), theseare microtubules, microfilaments, and intermediate filaments.

Therefore, we can conclude that the cytoskeleton is the internal structure that maintains the shape of the cell and is made up of proteins that polymerize into filamentous structures.

Learn more about the cytoskeleton here: brainly.com/question/13449140

Answer 2

Answer:

Answer:

microtubules. actin filaments and intermediate filaments

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Which type of soil makes it MOSTdifficult for plants to thrive and
decompose organic material?

Answers

Explanation:

Poorly drained soils tend to have a high percentage of organic matter because low oxygen levels limit decomposition organisms.

What might be one negative result of growing this specific GMO?

Answers

The insects could grow resistant to the pesticide in the genetically-modified corn and become immune to regular pesticides.

Animal researchers refer to the process of filtering out sights, scents, and sounds that have little effect on survival asa. aggression.
b. desensitizing.
c. nurturing.
d. habituation.

Answers

The answer is option D. Habituation. Habituation is the process of filtering out sights, scents, and sounds that have little effect on survival. Habituation is the diminished response of animals to certain stimuli that are deemed unnecessary or irrelevant in the process of of survival.

What initially causes a nerve impulse

Answers

Nerve impulses are caused by Potassium (K+) and Sodium (Na+) ions that are located inside and outside of the cell. The structure of the cell membrane is permeable to Potassium but are highly impermeable to Sodium ions. These impulses are transmitted from one nerve cell to the other in very fast series.

Answer is B) The movement of chemicals into the dendrites of the neuron causes a nerve impulse.

In coupled reactions, the energy released by a(n) ____________ is used to drive a(n) ____________ . ATP breakdown is often coupled to cellular reactions that require an input of energy.

Answers

Answer: Exergonic reaction; Endergonic reaction

In coupled reactions, the energy released by an exergonic reaction is used to drive an endergonic reaction. ATP breakdown is often coupled to cellular reactions that require an input of energy.

Explanation:

Cellular reactions include Exergonic and endergonic reactions. An exergonic reaction is one that occurs spontaneously and brings about the release of energy (in form of ATP). On the other hand, an endergonic reaction proceeds only with the input of energy.

Thus, exergonic reactions are usually coupled to endergonic reactions

Final answer:

In coupled reactions, the energy from an energy-releasing exergonic reaction, like the breakdown of ATP, is used to drive an energy-requiring endergonic reaction. These reactions usually occur together in a cell.

Explanation:

In coupled reactions, the energy released by a exergonic reaction is used to drive an endergonic reaction. An exergonic reaction is a chemical reaction where energy is released, often in the form of ATP (Adenosine Triphosphate). On the other hand, an endergonic reaction requires energy to proceed.

In a cell, these types of reactions often happen together (or are coupled) so that the energy released by an exergonic reaction, like the breakdown of ATP, gets immediately used to power an endergonic one, such as the synthesis of cellular components or the transport of molecules across the cell membrane.

Learn more about Coupled Reactions here:

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What does a large-scale mutation affect?A.one or a few nucleotides in the DNA

B.sections in the chromosomes

C.the nucleotides with either a substitution, deletion or insertion

D.one or a few nucleotides in the RNA