Answer:
The correct answer will be option B (dominant haploid phase in life cycle).
Explanation:
The life cycle of a plant shows alternation of generations in two phases- gametophyte(n) and sporophyte(2n).
Bryophytes is a division of plant kingdom also known as non-vascular plants (mosses, liverworts, hornworts).The gametophyte (haploid) phase dominates in the non-vascular plants while sporophytic phase (diploid) is reduced so, when you see a bryophyte you see a gametophytic stage.
In vascular plants also known as Tracheophytes, the gametophytic phase is highly reduced while sporophytic phase (2n) dominates the life cycle of plants.
thus, the correct answer is option B.
what is the structure of a protein?
a. True
b. False
The four macro molecules are nucleic acid, carbohydrate, proteins, and lipids.
Structure:
1. Nucleic acids: Contain N in rings, nucleotides made of sugar, phosphate and nitrogenous base
1. Carbohydrates: Made of C,H, and O; –OH's on all carbons except one
2. Lipid: Made of C,H, and O; lots of C-H bonds; may have some C=C bonds (unsaturated)
3. Protein: Contain N, have N-C-C backbone
Function:
1. Nucleic acids: Stores and transfers info
2. Carbohydrates; Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall
3. Lipid: Insulator and stores fat and energy
4. Protein: Provide structural support, transport, enzymes, movement, defense.
The 4 types of Macromolecules:
- Carbohydrates: Compound made of Carbon, Hydrogen, and oxygen. Their main functions are for Energy, Storage, and structure. There are 3 types of carbs; Monosaccharides, Disaccharides (Which are both simple sugars), and Polysaccharides (Which are starches).
- Lipids: Compound that contains mostly carbon and hydrogen. Their main functions are to store energy, Insulate the body, surround and protect cells, regulate cell activity, and provide structure and Transmit information. They are well known as Fats (solid at room temp.) & oils (Liquid at room temp.) phospholipids, and Steroids.
- Proteins: Compound made of Carbon, Hydrogen, and Nitrogen. Their main functions are for transport, making movement possible, providing structure and support, and speeding up chemical reactions.
- Nucleic Acids: Compound made of Carbon, Hydrogen, oxygen, nitrogen, and phosphorous. Their main function is to store and transmit genetic information, determine protein structure, and helping in building proteins. They are the blueprint for life. They include DNA and RNA, and they determine your appearance.
B.) Photosynthesis and cellular respiration are competitive processes that require the same reactants to start a reaction
C.) Photosynthesis and cellular respiration are complementary processes that could not occur without one another
D.) The only difference between photosynthesis and cellular respiration is whether or not light is available to start the reaction
Answer:
The correct answer would be C.) Photosynthesis and cellular respiration are complementary processes that could not occur without one another.
Photosynthesis is the process by which green plants convert sunlight into chemical energy or food or glucose.
It produces glucose or food from simpler substances like carbon dioxide and water in presence of sunlight and chlorophyll.
The overall reaction can be written as:
6CO₂ + 6H₂O + sunlight → C₆H₁₂O₆ + 6O₂
In contrast, the cellular respiration converts the chemical energy of the food into ATP (adenosine triphosphate).
It oxidizes glucose completely in presence of oxygen to produce carbon dioxide, water, and energy (approximately 36-38 ATP).
It takes place in almost all organism including plants.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy (ATP)
Thus, we can say that photosynthesis and cellular respiration are complementary to each other.