Which image represents the step in mitosis when chromosomes condense and spindle fibers form?

Answer:

1. Retrotransposon pathway: E. Involves an RNA intermediate and the reverse transcriptase enzyme

3. Cut and paste pathway: A. Involves removing a segment of DNA and placing it in a new location; the number of TE is not increased.

5. Transcription pathway: B. Involves the copying of DNA.

4. Replicative pathway: C. Involves the translation of proteins.  

2. Direct cut pathway: D. N/A

Explanation:

Class I transposable elements (also known as retrotransposons) are genetic mobile elements that copy and paste into other loci by reverse transcription and integration of the cDNA into new genomic regions

Class II transposable elements (also known as DNA transposons), can move by two different mechanisms of transposition:: 1-cut-and-paste pathway: the DNA transposon leaves one locus and integrates into another genomic site. and 2-replicative pathway: the DNA transposon remains in one locus while new copies of its sequence are mobile. The replicative pathway requires a transposase enzyme that acts as a catalyst of transposition.

A⇢Amplitude

B⇢Wavelength

C⇢Crest

D⇢Trough

Answer:

Proteins consist of units called amino acids, strung together in complex formations. Because proteins are complex molecules, the body takes longer to break them down. As a result, they are a much slower and longer-lasting source of energy than carbohydrates. There are 20 amino acids.

Answer:

they both give us energy

Explanation:

Answer:Acquisition of a plasmid with a gene encoding an enzyme to inactivate the antibiotic

Explanation:

Clostridium difficile is a Gram-positive gastroimtestinal bacteria that forms spore it cause a range of diseases like antibiotic-associated diarrhea (AAD).

C. difficile genome harbors a variety of resistance genes that makes it resistance to different classes of antibiotics. Analysis conducted on C. difficile 630 genome identified genes encoding β-lactamase-like proteins and penicillin-binding proteins (PBPs) as one that mediate the resistance to the β-lactam antibiotics such as penicillin and cephalosporins this is done by an enzymes that unlocks the drug active site making the bacteria resistance to it.

Answer:

Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. Trophic level transfer efficiency (TLTE) measures the amount of energy that is transferred between trophic levels

Answer:

False

Explanation:

We know from thermodynamics that;

When ∆G is positive the process is not spontaneous

When ∆G is negative the process is spontaneous

When ∆G is zero, the system has attained equilibrium.

In both cases, ∆G is positive hence the denaturation of both enzymes is not spontaneous, hence the answer above.

Answer:

i think its a molecule

Explanation:

Oxygen is found naturally as a molecule.

Answer:

A: The right answer is Vacuole

Vacuoles are organelles present in plant cells.  It is a large single structure, of variable shape according to the cells, delimited by a lipid membrane called tonoplast.

The vacuoles allow the storage of water, ions, sugars, ... and by magnifying, play an important role in the growth of the plant.

B: The right answer is Mitochondria

Mitochondria are organelles present in eukaryoptic cells. The mitochondrion is composed of a double membrane, the inner membrane being folded into mitochondrial ridges.

Mitochondria are the organelles that produce the energy of the cell. The mitochondria thus have a role of power station for the cell. They are the ones who perform cellular respiration.

C: The right answer is Cell membrane (the inside layer)

All cells (prokaryotic and eukaryotic) are separated from their environment by a palsmic membrane.

The plasma membrane is the line of demarcation between the cell and its environment (= envelope of the cell).

It determines what goes into the cell and what comes out of it. Like all biological membranes, the plasma membrane has a selective permeability, that is to say it is allowed to pass through certain substances more easily than others.

The plasma membrane consists of a double lipid layer in which proteins are inserted.

D: The right answer is Chloroplast

Chloroplasts are important organelles specific to plant cells. Chloroplasts appear green ... They contain chlorophyll, a pigment that captures solar energy.

Choroplasts perform photosynthesis, that is, they absorb sunlight and use it for the manufacture (synthesis) of organic compounds from carbon dioxide and water.

E: The right answer is Lysosome

The lysosome is a small spherical structure (a vesicle) delimited by a lipid membrane located in the cytoplasm of eukaryotic cells. The membrane contains ion channels (proton pumps) that allow the active entry of H + ions, in order to maintain an acid pH (between 3.5 and 5) within the lysosomal vesicle.

Lysosomes are organelles of eukaryotic cells that contain a mixture of digestive enzymes used to degrade macromolecules.

Lysosomes are considered the "stomach" of the cell.

F: The right answer is Endoplasmic reticulum

The endoplasmic reticulum are organelles of eukaryotes that extend throughout the cytoplasm (like a labyrinth). These are organelles that produce proteins and play a vital role in the development of the other membranes of the cell.

Explanation:

Dont forget my brainliest

Answer: it gives  water to the plants and water for animals to drink

Answer:

They have membrane bound organelles as well as a membrane bound nucleus.

Here's extra: "Endoplasmic reticulum, microtubules, and the Golgi apparatus are unique to eukaryotic cells, and will not be found in prokaryotes."

Answer:

The specimen where cells were first identified was cork.

hope this helps have a good day

Answer:

true

Explanation:

Answer:

The autotrophs are the ones that perform the phosphorus cycle.

Explanation:

A is correct because the autotrophs are the organisms that are able to consume the inorganic phosphates, use them, and release parts of them in the other spheres, thus contributing to the phosphorus cycle.

B is not correct because the heterotrophs are not organisms that can process inorganic matter and produce their own food, instead, they are dependent on the autotrophs to do that.

C is not correct because the carnivores are not able to consume and process inorganic phosphates, with their food sources being based around the primary and secondary consumers.

D is not correct because the herbivores use the producers (autotrophs) as their food source, and they are not able to process inorganic phosphates on their own.

Answer:

Biological membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles.

Answer:

Energy, passive

Explanation:

This process does not require the cell to use energy  to move molecules. It is an example of passive transport.

Answer:

uhm this is true is that is what your asking?

Explanation:

Lipids such as fats serve as a stored form of energy and are required for various functions of the body. The body needs to digest and absorb the fats we consume so that it can accomplish these functions.

Answer:

The answer is actually false i took this lesson on oddseyware already :)

Explanation:

The correct answer is B. Each of the claimants or their living children.

Explanation:

One of the basic principles in genetics establishes genes are passed from the parents to their offspring. Indeed, children receive 50% of genes from each parent. This implies the daughter of the tsar and tsarina will have share part of the DNA including mtDNA (mitochondrial DNA) of her mother, father, and siblings.

According to this, to prove if someone is Anastasia or not, it is possible to use the mtDNA sample from the tsar, tsarina, or death children but not from the claimants. This is because the claimants are not confirmed relatives of the tsar or the tsarina, and therefore their DNA cannot be used to determine if a woman is the daughter of the tsar and tsarina. Indeed, a woman claiming to be Anastasia can share DNA with another claimant and this does not prove they are related to the tsar and tsarina or that the woman is the real Anastasia.

Answer:

on the extracellular side of the cell membrane

Explanation:

Ligands can be defined as signaling molecules that interact with receptors localized on target cells. Protein ligands are generally polar and soluble in water. In consequence, they tend to bind with extracellular domain receptors localized on the cell surface, on the outside surface of the cell. Some examples of protein ligands include, among others, hormones (e.g., insulin), growth factors, neurotransmitters, etc.

Answer:

Lithosphere is the name of the solid part of Earth, including rock, minerals, and metals.

Answer:

Geosphere/Lithosphere

Explanation:

The answer would be lithosphere but for this question it wouldn't' be because I took the test.So another word for lithosphere would be geosphere.These answers are both correct just that sometimes the test would only show one of these.

Answer:  Types; Examples : Transport (Hemoglobin, albumin )

Structural, (Actin, tubulin, keratin ), and Hormones, (Insulin and thyroxine).

Explanation: Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins are polymers – specifically polypeptides – formed from sequences of amino acids, the monomers of the polymer. A single amino acid monomer may also be called a residue indicating a repeating unit of a polymer.

There are seven types of proteins: antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins.

It is convenient to describe protein structure in terms of 4 different aspects of covalent structure and folding patterns. The different levels of protein structure are known as primary, secondary, tertiary, and quaternary structure. The primary structure is the sequence of amino acids that make up a polypeptide chain.

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Answer: Increased water temperature caused by the industrial plant.

Explanation: this is explained in the text lol.

Answer:

An Environmental Condition

Explanation:

It explains in the text that it started when an electrical plant began discharging heated water into the stream.

Answer:

B. Fluorinated Gas

ok

Air conditioners and fridges involves greenhouse gases which are hydrofluorocarbons. In commercial refrigeration and air conditioning systems carbon dioxide gases is produced.

Greenhouse gases trap heat in atmosphere and warm the Earth.

The main gases involved are carbon dioxide, methane, nitrous oxide, water vapors etc. It also involves flourinated gases.

Carbon dioxide is primary greenhouse gas, which is emitted by human activities.

Thus, option A is correct.

For more information about greenhouse gas, visit:

https://brainly.com/question/4509458

Answer:

A water molecule must be added