Answer the following question given this paragraph: The three germ layers are the endoderm, the ectoderm, and the mesoderm. Cells in each germ layer differentiate into tissues and embryonic organs. The ectoderm gives rise to the nervous system and the epidermis, among other tissues. The mesoderm gives rise to the muscle cells and connective tissue in the body. The endoderm gives rise to the gut and many internal organs. Organogenesis Gastrulation leads to the formation of the three germ layers that give rise during further development to the different organs in the animal body. This process is called organogenesis. Organs develop from the germ layers through the process of differentiation. During differentiation, the embryonic stem cells express specific sets of genes that will determine their ultimate cell type. For example, some cells in the ectoderm will express the genes specific to skin cells. As a result, these cells will take on the shape and characteristics of epidermal cells. The process of differentiation is regulated by location-specific chemical signals from the cell's embryonic environment that sets in play a cascade of events that regulates gene expression. Q: Which germ layers are essential for animal embryos to grow and develop into a body? Choices: - histone and melatonin - keratinocytes , ectoderm , mesoderm - cytoplasm and chloroplasm - endoderm, ectoderm, mesoderm A:
endoderm, ectoderm, mesoderm
Answer the following question given this paragraph: Q: What are the effects of light on plant morphology called? Choices: - electrogenesis - Megasporogenesis - Microsporogenesis - photomorphogenesis A:
photomorphogenesis
Q: Answer the following question given this paragraph: Cold and snow are typical for Chicago in the winter. Q: What is typical weather for chicago in winter? Choices: - rain and wind - dry and windy - ice and humidity - cold & snow A:
A: cold & snow
Question: Answer the following question given this paragraph: All of the inner planets are orbited by man-made satellites. Jupiter and Saturn have man-made satellites too. We can see what the planets look like from the photos they take. The satellites also carry instruments that collect a lot of important data. This is better than taking a field trip to such hostile places. You can learn a lot while sitting your own, very comfortable planet!. Q: What man-made structures orbit all of the inner planets as well as jupiter and saturn? Choices: - comets - space shuttles - moons - satellites A:
Answer: satellites
*Question*
Answer the following question given this paragraph: Epidemiologist Epidemiology is the study of the occurrence, distribution, and determinants of health and disease in a population. It is, therefore, part of public health. An epidemiologist studies the frequency and distribution of diseases within human populations and environments. Epidemiologists collect data about a particular disease and track its spread to identify the original mode of transmission. They sometimes work in close collaboration with historians to try to understand the way a disease evolved geographically and over time, tracking the natural history of pathogens. They gather information from clinical records, patient interviews, surveillance, and any other available means. That information is used to develop strategies, such as vaccinations (Figure 22.26), and design public health policies to reduce the incidence of a disease or to prevent its spread. Epidemiologists also conduct rapid investigations in case of an outbreak to recommend immediate measures to control it. An epidemiologist has a bachelor's degree, plus a master's degree in public health (MPH). Many epidemiologists are also physicians (and have an M. ), or they have a Ph. in an associated field, such as biology or microbiology. Q: What is a person who studies the frequency and distribution of disease within human populations and environments called? Choices: - biologist - entymologist - anthropologist - epidemiologist A:
**Answer**
epidemiologist
Answer the following question given this paragraph: Both endocytosis and exocytosis are active transport processes. Q: Both endocytosis and ______ are active transport processes. Choices: - biosynthesis - proteolysis - cellular respiration - exocytosis A:
exocytosis