Answer:
The botanist should make an hypothesis for your observation (the interaction between population of beetle and leaves of trees)
Explanation:
According to the scientific method, the first step is to make observations about some process or system. In the present case, the botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree.
Once an observation was made, the second step is to write an hypothesis that suggest something about the observation (for example beetles choose that trees that have more palatable leaves, or leaves with particular compounds).
After the ywo mentioned steps, the botanist can plan an experiment, execute it and so on.
Answer:
B
Explanation:
EDGE 2021
Answer: True
Explanation:
Forensic entomology is a sub-discipline of forensic science. It deals with the study of insects and their life cycles which are found in close proximity of the dead body. The type of insects grow over the body depends upon the stage of decomposition of the body. Also the life cycle varies depending upon the feeding nature of the immature stages of the developing insect on the dead body. More deformed body by the insects as evident by the colonization of eggs, and other immature stages as well as the mature insects can give indication of the time since death.
On the basis of the above description, the given statement is true .
cholesterol
testosterone
beeswax
Cholesterol is the lipid that acts as a chemical messenger in the body, playing a role in cell signaling and hormone production. Therefore, the correct answer is option b.
Cholesterol is the lipid that acts as a chemical messenger. Cholesterol is a sterol, a type of lipid molecule, and it serves as a precursor for the synthesis of various important chemical messengers in the body, including hormones like testosterone and estrogen.
These hormones play key roles in various physiological processes, such as regulating the development and function of reproductive organs, and they act as signaling molecules that help coordinate different activities within the body. Cholesterol also plays a vital role in the structure and function of cell membranes.
The other options (adipose tissue and beeswax) are not typically considered chemical messengers in the same way that cholesterol and hormones are.
Therefore, the correct answer is option b.
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The atoms in any compound are held together by some bonds. These bonds are chemical bonds.
A chemical bond is an attractive force which hold the various components of a compound together. It provides stability to the compound by loss of energy. The more strong a chemical bond, the stronger is the chemical compound.
A compound is the bonding of two or more atoms tied together. It can be a molecule or a group bound together. To or more different atoms which are together but not covalently bound is a mixture.
Types of chemical bonds found commonly are:
1. Ionic bonds
2. Hydrogen bonds
3. Covalent bonds
4. Polar bonds
Hence, the atoms in a compound are held together by chemical bonds.
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The right answer is B
The development towards 1.4 Ga of eukaryotes, aerobic organisms such as unicellular algae, will be decisive for the oxygenation of the Earth's atmosphere.
The first multicellular organism is a red alga dating back to 1200 Ma during the Mesoproterozoic era (part of Precambrians). Various forms of life with soft bodies dated between 600 and 541 Ma constitute what is called the Vendian fauna, that is to say the fauna of the Ediacarien.
The appearance of a great diversity of small shelly fauna from 541 Ma will mark what is called the Cambrian explosion.
b. They are substrates for aerobic metabolism and if increased in the blood show that the cardiac muscle is not functioning normally.
c. These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
d. They are by-products of anaerobic metabolism (glycolysis) and if increased indicate that the heart is not receiving oxygen.
Answer:
c.These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
Explanation:
B. to determine the compatibility of the organs of donor and recipient
C. to determine the compatibility of antibodies of donor and recipient
D. to determine the compatibility of the blood vessels of donor and recipient
the answer is A. to determine the compatibility of the blood types of donor and recipient