Answer:
which plants and animals?
Explanation:
A light year is the distance traveled by light in a year.
Answer:
Exocytosis
Explanation:
Exocytosis is a type of active transport in which the cell membrane fuses with secretory vesicles and expels their content (water-soluble molecules, hormones, neurotransmitters, etc.) into the extracellular space. Exocytosis can be regulated or constitutive. Regulated exocytosis occurs in response of a specific signal while constitutive exocytosis secretes molecules without the need of a signal. Ca2+ is an external signal that triggers regulated exocytosis which is particularly important in neuron synapses.
a nucleolus is a small spherical structure found in the nucleus of a cell, it takes up about 25% the space in rhe nucleus and synthesises ribosome
Explanation:
through photosynthesis setting organs convert solar energy to chemical energy which is then used to build carbohydrate molecules .the energy used to hold this molecule together is released when an organism breaks down food .cell then use this energy to perform work known as cellular respiration
