Answer:The endosymbiotic theory is how scientists think mitochondria and chloroplasts evolved in eukaryotic organisms.
Why wings (and hence flight)evolved from this point is a matter of contention among scientists; various hypotheses proposed include: Wings evolvedfrom arms used to capture small prey. ... Wings evolved from gliding ancestors who began to flap their gliding structures in order to produce thrust.
Answer:
- Hemoglobin
- Blood
Explanation:
Since Anne is 19th century scientist, she would use conservative or classical methods of detecting blood traces on a glass at a crime scene because disovery of DNA was still not done. In 1853, Dr. Teichmann developed a test (also known as Teichmann test) that aim to crystallize haemoglobin when it is heated with glacial acetic acid. Since blood as haem group (hemin) and any surface that has traces of blood would react with glacial acetic acid and form crystals which can be then detected. This was one of the breakthrough discovery of that time.
The provided question is not complete, however the complete question is as follows:
Of the four major types of membranes, the one consisting of dense connective tissue overlying loose connective tissue is
A. serous membrane.
B. synovial membrane.
C. mucous membrane.
D. cutaneous membrane.
Answer:
The correct answer is option B. synovial membrane.
Explanation:
Synovial membranes are the connective tissue that is present within surrounding the joints that move freely such as elbow. These tissue membranes lack the epithelium layer in them.
These tissues are loose and thin in structure and coverings that protect tendons where they go through bony prominences. These tissues are consisting of dense irregular connective tissue present on top of the other loose tissues.
Thus, the correct answer is - option B. synovial tissue.
