Chromosomes are a DNA molecule, that cannot be seen underneath a microscope. However, the DNA in chromosomes become pushed together during cell division, which then allows scientists to see its material under a microscope.
Answer:
1. When the number of calories a person consumes is equal to the number of calories he or she burns in a day, that person's body is in Energy Balance.
2. Someone who is in Positive Energy Balance eats more calories in a day than he or she bums.
3. Negative Energy Balance occurs when the number of calories a person bums in a day is greater than the amount he or she consumes.
4. Weight management involves applying strategies that allow someone to keep his or her body weight within a healthy.
5. The Basal metabolic rate is the amount of energy uses in order to perform its basic physiological functions.
6. The Thermic effect of food refers to the number of calories burned in order to digest absorb, metabolze, and store food.
7. The Lean body mass refers to his or her total body - fat mass.
Explanation:
This group of statements are related to body weight, the balance between the energy we consume through food and all the energy we burn through excercise and different activities, such as only mantaining our body temperature and normal processes.
A hypothesis is a testable explanation of a scientific problem that is based on research and observation.
Answer:
Plant cells need both chloroplasts and mitochondria because they perform both photosynthesis and cell respiration.
Explanation:
Chloroplast converts solar energy into chemical energy during photosynthesis, while mitochondria, the powerhouse of the cell, produces ATP- the energy currency of the cell during respiration.
