Question

cells that need a lot of energy have lots of ____. a mitochondria b ribosomes c endoplasmic reticulum d chloroplasts

Explanation:

Mitochondria are the power - houses of the cell, responsible for producing energy in the form of ATP through cellular respiration. Ribosomes are for protein synthesis, endoplasmic reticulum is involved in protein and lipid synthesis and transport, and chloroplasts are for photosynthesis in plant cells.

Answer:

A. Mitochondria