The Benthic Community of an Ocean,with the Exception of Hydrothermal

question 77

Multiple Choice

The benthic community of an ocean,with the exception of hydrothermal vents,is best described as

• A)completely heterotrophic and very diverse.
• B)completely autotrophic and very diverse.
• C)completely phototrophic and not very diverse.
• D)mostly heterotrophic and not very diverse.

Identify the factors leading to mutations and cancer.

Comprehend the specialization of cells in multicellular organisms.

Differentiate between oncogenes and tumor-suppressor genes.

Understand the role of environment and lifestyle in cancer risk.

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Definitions:

Chorionic Villi Sampling

A prenatal test that involves taking a sample of the chorionic villi from the placenta to test for chromosomal abnormalities and certain genetic conditions in the fetus.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing wastes from the fetus.

Tissue Sample

A small amount of bodily tissue collected for analysis to diagnose or study diseases, conditions, or infections.

Noninvasive Prenatal Diagnosis

A method or set of methods used to assess the risk of fetal genetic conditions without the need for procedures that penetrate the skin or enter the body.