Answer:
The word "prokaryote" is derived from Greek words that mean "before nucleus." Prokaryotic cells contain fewer organelles or functional components than do eukaryotic cells. Their four main structures are the plasma membrane, cytoplasm, ribosomes and genetic material (DNA and RNA).
Explanation:
please be verified
<span>Tissues are made up of groups of cells that all have a similar function and structure.
</span><span>Different species of plants and animals have different types of cells and thus different types of tissues, organs and systems. In humans and other animals, there are four main types of tissues: connective, muscle, nerve and epithelial. Each of these groups can be further broken down, as there are a number of different tissues within each family. For instance, the human body contains three different types of muscle tissue and two types of nerve tissue. Furthermore, blood, bones and cartilage are all types of connective tissue.</span>
Answer:
The study by Jones and RAEL director Daniel Kammen, a UC Berkeley
Explanation:
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Answer:
According to the hormone diagram of the menstrual cycle, the woman is not pregnant due to the behavior of progesterone and estrogens, whose levels do not increase, in addition to the absence of human chorionic gonadotropin.
Explanation:
The graph shows the behavior of hormones during a woman's menstrual cycle in the absence of pregnancy.
During a woman's normal cycle, estrogen, luteinizing hormone (LH) and follicle stimulating hormone (FSH) tend to increase prior to ovulation, reach their peak values at ovulation, and then decline, as shown in the graph. Progesterone, on the other hand, increases after ovulation and decreases if the woman does not become pregnant.
In the case of a pregnant woman:
- <u>Estrogens</u> continue to increase after ovulation, produced by the ovaries and placenta.
- <u>Progesterone</u> also increases its levels, as it is a hormone produced by the ovaries and placenta.
- <u>Hormone human chorionic gonadotropin</u> (HCG) appears and increases during pregnancy, due to the secretory activity of the placenta.
<em><u>The diagram represents the normal cycle of a woman who is not pregnant</u></em>.