Answer:
Cell wall and plastid
Explanation:
The most important difference between plant cell and animal cell is that plant cell contain cell wall for mechanical strength and plastid to carry out photosynthesis(chloroplast). and storage(leuko plast).
But in case of animal cell cyto skeleton is present in place of cell wall and plastid is absent because animals generally does not carry out photosynthesis.
The answer is a) because when muscles contract, myosin heads attach to actin and breaks down ATP. Energy is released, pulling actin filaments and muscle contracts. Essentially actin and myosin filaments are sliding past each other.
D. The microscope. It is now the workhouse of biology
Answer:
D
Explanation:
Methanogens are prokaryotes and therefore have prokaryotic cells. They are single-celled archaea. They are found in hypoxic conditions like the first stomach of ruminants where they digest molecules like cellulose and produce methane as a byproduct. The rest are composed of eukaryotic cells which are much larger than prokaryotic cells and their organelles are membrane-bound (unlike prokaryotes).
