Bacteria classified as gram+contain many layers.
1. pseudomurein
2. phospholipids
3. cholesterol
4. peptidoglycan

4. Peptidoglycan

Explanation:

"Most bacteria can be broadly classified as Gram positive or Gram negative.

Gram positive bacteria have cell walls composed of thick layers of peptidoglycan.

Gram positive cells stain purple when subjected to a Gram stain procedure.

Gram negative bacteria have cell walls with a thin layer of peptidoglycan. The cell wall also includes an outer membrane with lipopolysaccharide (LPS) molecules attached."

Reference: Bailey, Regina. “Gram Positive vs. Gram Negative Bacteria.” ThoughtCo, ThoughtCo, 15 Oct. 2018

The correct answer is number 4. Peptidoblycan

Explanation:

  These bacteria, when performing the Gram staining technique, have a violet or dark blue stain. Gram-positive organisms are able to retain the violet dye due to the large amount of peptidoglycan in their cell wall. Cell walls of gram-positive organisms usually lack the peripheral membrane present in gram-negative bacteria.

  Peptidoglycan, also called murein, is a peptide-bound heteropolysaccharide present in the prokaryote cell wall. It is formed by two types of sugars (N-acetylmuramic acid and N-acetylglucosamine) and some amino acids.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle