They both have chlorophyll so they both do photosynthesis. <span />
Answer:
Oogenesis occurs in the outermost layers of the ovaries.
Spermatogenesis occurs in the seminiferous tubules of the male testes in a stepwise fashion.
Explanation:
Answer:
When a doctor strikes the child's kneecap:
- <em>The </em><em>sensory receptors </em><em>located in the tendon receive the stimulus.</em>
- <em>Information travels by </em><em>afferent pathway </em><em>through the sensory component of </em><em>motor nerve</em>
- <em>The integration center, in the </em><em>spinal cord</em><em>, receives the information and sends a motor response by </em><em>efferent pathway</em><em>.</em>
- <em>The </em><em>quadriceps contracts and extends the leg</em><em>.</em>
Explanation:
The patellar reflex —by hitting the kneecap tendon—is an example of a reflex arc, which produces the extension of the leg over the knee as an involuntary response to the stimulus to strike the patellar tendon.
This reflex has five main components:
- <em>Receptor.</em>
- <em>Sensitive fibers of a motor nerve (afferent pathway)</em>
- <em>Spinal cord integration center.</em>
- <em>Motor nerve fibers (efferent pathway).</em>
- <em>Effector.</em>
The reflex arc occurs because the stimulus received does not travel to the brain, but to the spinal cord, which causes the reflex response to be faster.
When the doctor strikes sensory neurons below the boy's kneecap, the following sequence of events occurs:
- The sensory receptors located in the tendon receive the stimulus.
- Information travels by afferent pathway through the sensory component of the femoral nerve.
- The integration center, in the spinal cord, receives theinformation and sends a motor response by efferent pathway.
- The quadriceps contracts and extends the leg.
The patellar reflex evaluates the integrality of the reflex arc at that level, whose synapse occurs between the lumbar segments of the spinal nerve L₂ and L₄.
Gastrulation is the process in which tissue layers are developed. These layers of tissue later become organs and organ systems. Germination is a process restricted to plants while embryology and morphology are considered studies of the growth and changes in organisms.
Answer:
Histone proteins act to package DNA, which wraps around the eight histones, into chromosomes. Histone modifications act in diverse biological processes such as transcriptional activation/inactivation, chromosome packaging, and DNA damage/repair.