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Biology

1 answer:

Serjik [45]3 years ago

3 0

Answer:

2)A Dutch father-son team named Hans and Zacharias Janssen invented the first so-called compound microscope in the late 16th century when they discovered that, if they put a lens at the top and bottom of a tube and looked through it, objects on the other end became magnified.

3)While observing cork through his microscope, Hooke saw tiny boxlike cavities, which he illustrated and described as cells. He had discovered plant cells! Hooke's discovery led to the understanding of cells as the smallest units of life—the foundation of cell theory.

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The body system that stimulates eating or drinking is the ________ system. The body system that stimulates eating or drinking is

lisov135 [29]

Answer: Nervous system.

Explanation:

Nervous system is the system in the body that consists of nerves,cells that coordinates action and sensory information and transmit nerve impulses between the body and the brain. In the body, Ghrelin is an hormone or chemical produced in the stomach. This stimulate hunger by acting on neurons in the hypothalamus which make the nerve cells that cause hunger to increase in their activity and reduce hunger inhibiting cells. The hypothalamus produce two proteins that cause hunger: neuropeptide Y (NPY) and agouti-related peptide (AGRP. This create a signals and it is send to the brain. The brain interprete it as hunger and send the signal to the hypothalamus which then influence eating behavior.

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3 years ago

Biologists use a classification system to group organisms in part because organisms

KIM [24]

Answer:

organisms are very numerous and diverse

6 0

4 years ago

What is the answer to number 1

ivanzaharov [21]

Answer:hi

Explanation:hi