Macromolecules
Proteins, Nucleic Acids, Lipids, and Carbohydrates are all examples of what?
Macromolecules
What are the four spheres of the Earth?
Biosphere, Geosphere, Atmosphere, Hydrosphere
Which cell structure is mainly responsible for releasing energy from food molecules in some single-celled organisms?
Mitochondrion
What cell division process results in identical body cells?
Mitosis
A scientist plans to cut a segment of DNA so that it can be inserted into the DNA of a bacterium, a single-celled organism. The scientist needs to use a special type of organic molecule to perform this cutting process. This molecule is (1) a lipid (3) an enzyme (2) a carbohydrate (4) a hormone
What is (3) an enzyme
Enzymes, antibodies and hormones are all examples of which macromolecule?
What is PROTEIN
Explain why predators are needed in the environment.
They keep the herbivore population in control
In which organelle does protein synthesis occur in the cell ?
Ribosomes
Asexual reproduction involves _ parents and __ offspring.
1, identical
The hormone adrenaline can affect only cells with (1) appropriately shaped receptors (2) the appropriate antibodies (3) ribosomes that produce adrenaline (4) genes that break down adrenaline
What is (1) appropriately shaped receptors
It is important to eat a balanced diet, but if you do not, what can your body do?
Convert one macromolecule into another
What are the four processes involved in the carbon cycle?
Decomposition, Photosynthesis, Respiration, & Combustion
Cell Membrane
Where does the fetus develop?
In the uterus
In living cells, chemical processes, such as synthesis, all require the action of (1) specialized antibiotics (2) hormones (3) salts (4) biological catalysts
What is (4) biological catalysts ENZYMES!
ANSWER 2 of the 3 questions 1. Proteins break down into? 2. Carbohydrates and Starch break down into? 3. Lipids and Fats break down into?
Proteins--> amino acids Carbohydrates/Starch--> Glucose (sugars) Lipds/Fats--> Fatty acid and Glycerol
What are two ways we can decrease the amount of carbon dioxide in the atmosphere?
Plant more trees and burn less fossil fuels
A mutation can only be passed on to the offspring if it occurs in which type of cell
Egg/sperm cell (gamete)
Why is asexual reproduction dangerous for a species?
Why do plants close their stomata?
What is (1) a feedback mechanism
List ALL of the nucleotides found in the body. Spelling must be close.
Adenine, Thymine, Guanine, Cytosine, and Uracil
Give an example of a limiting factor and the definition of one
A limiting factor limits the size of a population. This could be water, food, space, etc.
Where does transcription occur?
In the nucleus
How many chromosomes does the sperm cell carry in a human?
23
How did we get all the species of dogs we have today? (1) mitosis (2) cloning (3) natural selection (4) selective breeding
What is (4) selective breeding