Answer:
The external coverings of diatoms are made up <u>silica </u>, while slime molds have cell walls containing <u>cellulose.</u> Diatoms are <u>photoautotrophs</u> because they make food through photosynthesis, while slime molds are <u>heterotrophs</u>.
Explanation:
Diatoms can be described as algae that are mostly single-celled. They are made up of a unique kind of cell wall composed of silica. This cell wall is termed as a frustule. Mostly, diatoms are capable of carrying out photosynthesis and hence make their own food.
Slime moulds can be described as organisms that are fungus-like protists. They are not capable of producing their own food and feed on other plants. Hence, they are heterotrophs.
Answer:
A kinesin.
Explanation:
Kinesin is a protein belonging to a class of motor proteins found in eukaryotic cells.
Kinesins move along microtubule (MT) filaments, and are powered by the hydrolysis of adenosine triphosphate (ATP) which means kinesins are ATPases. Active movement of kinesins supports several cellular functions like mitosis, meiosis and transport of cellular cargo, such as in axonal transport.
B. Because they are harder to see
Answer:
The correct answer is energy. Other organisms are not necessary, just like offsprings since there are many organisms that never have offsprings. Light is also not necessary with numerous organisms, especially those like the ones that live deep in the sea where light never reaches. Some form of energy is necessary for everyone.
