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ziro4ka [17]
2 years ago
12

Which type of molecule includes a long chain carbon backbone

Biology
1 answer:
tester [92]2 years ago
5 0

Answer:

Although lipids have a "backbone," they are not true biological polymers as their backbone is a three carbon molecule, glycerol, with longer substituent "side chains." For this reason, only proteins, carbohydrates, and nucleic acids should be considered as biological macromolecules with polymeric backbones.

Explanation:

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Salt marshes are diverse ecosystems because there are resources from both
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2 years ago
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A nurse is assessing a client who is reporting the sensation of "bugs crawling under the skin" and intense itching and burning.
klasskru [66]
Formication is the term for when there is a sensation of bugs crawling on or under the skin of the individual.
3 0
2 years ago
Which of the following best summarizes how hormone levels are controlled?
anastassius [24]

Answer:

Option A, Hormones are controlled by a feedback loop; information about a system is sent back to the controller of the system to improve its function.

Explanation:

Negative feedback loop controls the hormone production and release. This is done by eliciting the release of substances till a certain level after which the stop signal is activated thereby preventing further release. By this method,  concentration of hormones in blood is maintained within the narrow range.  

For example – Thyroid hormones is released when the anterior pituitary signals the thyroid. This continues till the hormones in the blood reach the threshold level. Once the threshold level is reached, hypothalamus receives a feedback and then signals anterior pituitary to inhibit further signaling to the thyroid

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7 0
2 years ago
Check all of the statements that are true regarding keratinized stratified squamous epithelium.
strojnjashka [21]

Answer;

-Keratinized stratified squamous epithelium forms the epidermis of the skin.

-In keratinized stratified squamous epithelial tissue, the cells on the apical (outer) surface are dead.

Explanation;

-Stratified squamous epithelium is a type of tissue found covering and lining parts of the body. Stratified squamous epithelium may be keratinized or nonkeratinized. Non-keratinized surfaces must be kept moist by bodily secretions to prevent them from drying out.

-The cells on the surface of stratified squamous keratinized epithelium are very flat. Not only are they flat, but they are no longer alive. They have no nucleus or organelles. They are filled with a protein called keratin, which is what makes our skin waterproof.

4 0
2 years ago
Acentric chromosomes, which lack centromeres, can form as a result of chromosome breakage or as a consequence of inversion with
Furkat [3]

Answer:

It wouldn't be able to migrate to the cell's poles.

Explanation:

During anaphase, microtubules attach the chromosome's centromeres and start dragging them towards the poles of the cell. In mitosis, this causes the separation of both sister chromatids for each chromosome, and each chromatid migrates to a different pole. In meiosis, first each homologous chromosome is separated by the same process, and then the sister chromatids are separated during anaphase II. If a chromosome doesn't have centromeres, microtubules are unable to attach the chromosomes, and so the separation of either sister chromatids or homologous chromosomes can't take place.

8 0
2 years ago
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