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lutik1710 [3]
4 years ago
9

Which best describes red blood cells

Biology
1 answer:
GaryK [48]4 years ago
4 0
The blood cells that carry oxygen are called red blood cells, they contain hemoglobin and it is the hemoglobin which permits them to transport oxygen and carbon dioxide. Hemoglobin aside from being a transport molecule is a pigment. It gives the cells a red color.
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The human respiratory system consists of various organs that work together to accomplish the vital task of bringing oxygen into
Olegator [25]

Answer:

C) esophagus - moves air from the nose into the lungs

Explanation:

The oesophagus is a muscular tube with a sphincter valve at each end. Its main function is to transport food and fluid, after being swallowed, from the mouth to the stomach.This is propelled from the pharynx into the oesophagus, and towards the stomach in a peristaltic waves. The peristalsis also pushes food along the alimentary canal

4 0
3 years ago
The adrenal glands produce hormones that impact short-term responses, including fear and anger.
xz_007 [3.2K]

Answer:

Epinephrine, also known as Adrenaline

Explanation:

Adrenaline impacts short-term mood and can take seconds to flood your system.

*it may also be cortisol, I'm not sure if there's more context. Cortisol takes longer to work and can have long-term effects.

6 0
3 years ago
What chemical bond is responsible for the existence of the sugar-phosphate backbone of DNA?
Alborosie

Answer:

covalent bond

Explanation:

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5 0
3 years ago
Which of the following statements best describes the process of gene expression?
ipn [44]
The best description of expression gene process is constitutive. this is because it is the partial diploid strain whereby the strain containing a beta-galactosidase gene which is constitutive.
Gene expression process is the process by which information from a gene is being used in the synthesis of the functional gene product. The process gene expression is used by different known life. For example, we eukaryotes, prokaryotes and utilized by viruses which are used to generate the macromolecular machinery which is for life.
5 0
3 years ago
How did Watson and Crick determine base pairing?
Natali [406]
<span>Watson and Crick determined the base pairing by using the new information to construct a new double-stranded helix model with the nitrogen bases paired A to T and C to G in the center. This base pairing immediately suggested to Crick that one side of the molecule could serve as a template to exactly replicate DNA sequences to pass on genetic information during cell reproduction. This second, successful model was unveiled in February 1951.</span>
3 0
3 years ago
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