Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?

A. Oviduct

B. Corpus luteum

C. Oocyte

D. Umbilical cord

Answer Explanation:

Corpus luteum. The corpus luteum is a temporary structure that forms from the ruptured follicle after ovulation. It produces progesterone, which is a hormone that prepares the endometrium (the inner lining of the uterus) for implantation of a fertilized egg. If pregnancy occurs, the corpus luteum continues to secrete progesterone until the placenta takes over.

Corpus Luteum (Cleveland Clinic)

Therefore, the Correct Answer is B.

Q #1: In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?

A. Triple point

B. Critical temperature

C. Absolute zero

D. Critical point

Answer Explanation

A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. A phase diagram usually has pressure on the y-axis and temperature on the x-axis. As we move along the curves of the phase diagram, we can see how the state of the substance changes from solid to liquid to gas, or vice versa.
Q #2: Which of the following is the function of a totipotent cell?

A. Aids in the maturation of sex cells

B. Carries electrical impulses

C. Develops into any kind of cell

D. Fights infectious diseases

Answer Explanation

A totipotent cell is a type of stem cell that has the ability to develop into any kind of cell in the body, including the cells that make up the placenta and the umbilical cord. This means that a totipotent cell can generate a complete organism from a single cell. The only natural example of totipotent cells are the fertilized egg and the cells produced by the first few divisions of the egg. Totipotent cells are different from other types of stem cells, such as pluripotent cells, which can develop into any cell type except for the placenta and the umbilical cord, and multipotent cells, which can only develop into a limited range of cell types.
Q #3: Which of the following microorganisms lack their own metabolic pathways and can only reproduce inside of a host cell?

A. Viruses

B. Bacteria

C. Helminths

D. Protozoa

Answer Explanation

Among the four types of microorganisms listed, only viruses lack their own metabolic pathways and can only reproduce inside of a host cell. Viruses are considered to be obligate intracellular parasites, meaning that they depend on another living cell for their survival and replication. Bacteria, helminths, and protozoa, on the other hand, are able to metabolize nutrients and energy from their surroundings and can reproduce independently of a host cell.

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Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?

More Questions on TEAS 7 Science

Q #1: In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?

Answer Explanation

Q #2: Which of the following is the function of a totipotent cell?

Answer Explanation

Q #3: Which of the following microorganisms lack their own metabolic pathways and can only reproduce inside of a host cell?

Answer Explanation

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