Answer;
Low power lens
Explanation;
-When focusing on a slide, it is important to always start with low power objective lens (4X or 10X). The 4x objective lens has the lowest power and thus the highest field of view. As a result, it is easier to locate the specimen on the slide than when you start with a higher objective lens.
-Once you have the object in focus, then switch to the next higher power objective. One should then focus again on the image and then switch to the next highest power such as 25x, 40x, etc.
Most animal and plant species we see in the fossil record are extinct, or no longer living. In fact, of all the species that ever lived, 98% are extinct. Animals and plants become extinct over time as a result of natural processes. Their habitat might change or a disease might wipe out a species.
Higher vascular plants contain catalase to metabolize Hydrogen peroxide (H2O2) in mitochondria and chloroplasts.
<h3>What is catalase?</h3>
Catalase is a key enzyme used by organisms to metabolize Hydrogen peroxide (H2O2), which is a reactive substance.
The animal tissues also contain catalase which they use to generate H2O and thus remove toxic H2O2.
In conclusion, higher vascular plants contain catalase to metabolize Hydrogen peroxide (H2O2) in mitochondria and chloroplasts
Learn more about catalase here:
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Xylem are tubes in the stem that transport water and minerals upward, from the roots to the leaves. Phloem are tubes in the stem that move food made in the leaves to other parts of the plant. ... Chlorophyll is a pigment that helps plants use energy from the sun to produce sugars.
Answer:
External and internal abdominal obliques, transverse abdominal, and rectus abdominis
Explanation:
The abdominal wall compression involves the action of four muscles:
- External abdominal obliques
- Internal abdominal obliques
- Transverse abdominal
- Rectus abdominis
- The external oblique, internal oblique, and transverse abdominis are the components of the lateral abdominal wall and the rectus abdominis is located medially.
- The rectus abdominis muscle helps in stabilizing side bending and supports the trunk.
- The abdominal obliques are involved in the rotation of the torso and bending along with the compression of the abdomen.
- The transverse abdominal helps in respiration.
- Besides there normal and routine functions all these muscles work together in abdominal compression.