Which of the following actions is most likely to have a negative effect on Earth's ecosystems?

A property of t cells, but not b cells, is their __________.

aksik [14]

A property of t cells, but not b cells, is their ability to form cells that directly kill virus-infected host cells.

8 0

3 years ago

The _____________ is a fluoroscopic examination of the esophagus, stomach, and duodenum, involving oral administration of barium

Dmitry_Shevchenko [17]

Answer:

upper gastrointestinal scan

Explanation:

Upper gastrointestinal series is the radiographic examination of upper gastrointestinal tract. Esophagus, stomach and then duodenum are visible on the X-ray film by the use of the liquid suspension which may be barium or water-soluble contrast.

Fluoroscopy is used during upper GI series. A continuous beam of X-ray rays is passed through body part and is transmitted to the monitor so that body part and the motion of it can be seen in every detail. In upper GI series, the fluoroscopy allows radiologist to see movement of barium through esophagus, stomach, and duodenum as the person drinks.

3 0

3 years ago

PLEASE HELP GIVING BRAINLIEST

Morgarella [4.7K]

Answer:

A) a member of the kingdom Animalia, and is typically characterized by a multicellular body, specialized sense organs, voluntary movement, responses to factors in the environment and the ability to acquire and digest food.

B) Because only plants can..?

C) Plant, Algae

D) They use sunlight

E) Yes

F) Yes

G) They're both living

H) So they can live

I) They are common

Explanation:

This is the best i could do, have a nice day, hope it helps

3 0

3 years ago

An organisms blank are located on threadlike structures called chromosomes

gayaneshka [121]

Explanation:

An organisms genes are located on threadlike structures called chromosomes.

Genes are a set of coded instructions in the form of DNA, which are crucial to cell regulation- these enable protein synthesis.

Further Explanation:

Nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and carry out protein synthesis.

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is condensed and tightly wound around histones as chromosomes. Chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes.

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

3 0

3 years ago

Which of the following pieces of evidence most strongly supports the idea that all life on Earth evolved from a single ancient c

ryzh [129]

D All organisms experience evolution

Common ancestry is identified in the genes. Selection forces are the drives to these physical and composition changes of an organism however, it can be traced back.

Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time.

3 0

3 years ago