The Reactions of the Krebs Cycle

question 128

Multiple Choice

The reactions of the Krebs cycle

• A)take place in the cytosol of human cells.
• B)generate ATP directly by substrate-level phosphorylation.
• C)are important for the metabolism of carbohydrates but not other molecules.
• D)take place only when no oxygen is present.
• E)produce pyruvate and lactate as end products.

---

Definitions:

Cleavage Divisions

A series of mitotic cell divisions in early embryonic development that leads to an increase in cell number without cell growth.

Blastocyst

An early stage of embryonic development characterized by a hollow sphere of cells, which implants into the uterine wall as part of pregnancy initiation.

Endometrium

The mucous membrane lining the interior of the uterus, which thickens during the menstrual cycle and is shed if pregnancy does not occur.

Granulosa Cells

Granulosa Cells are the somatic cells within an ovarian follicle that surround the developing oocyte, playing a key role in its development and hormone production.