BIOLOGY HIGH SCHOOL

Which statement is NOT true about polymers?Polymers are complex molecules composed of random sequences of atoms.
Polymers are large molecules composed of small monomeric units.
Polymes are macromolecules.

Answers

Answer 1
Answer:

Answer: Polymers are complex molecules composed of random sequences of atoms.

Explanation:

Polymers are macromolecules made up of repetitive units, linked through covalent bonds. They can be classified as Natural (Wood, rubber, protein) or Synthetic (PVC, polystyrene, polypropylene). Polymers are composed of macromolecules obtained by the polymerization of simple compounds called "monomers". Regarding the shape of the polymeric chain, polymers can be classified into:

linear, when the chain has no branches;

branched when the chain has small side chains (branches);

cross-linked when the chains are joined by chemical crosslinks
Answer 2
Answer: A). they are composed of random complex molecules. Hope this helped :D

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Which of the following statements are true about plant and animal cells

Answers

Answer:

Explanation:

Both Plant and Animal Cells:

Contain a nucleus, which houses the cell's genetic material (DNA).

Have a cell membrane (plasma membrane) that separates the cell from its environment.

Contain cytoplasm, a semi-fluid substance where many cellular activities occur.

Contain ribosomes, which are involved in protein synthesis.

Differences Between Plant and Animal Cells:

Cell Wall: Plant cells have a rigid cell wall made of cellulose, providing structural support. Animal cells lack a cell wall.

Chloroplasts: Plant cells typically contain chloroplasts, which are responsible for photosynthesis. Animal cells do not have chloroplasts.

Vacuoles: Plant cells often have a large central vacuole responsible for storing water and nutrients. Animal cells have smaller vacuoles, if present.

Shape: Plant cells often have a fixed rectangular or square shape due to the cell wall. Animal cells are more irregular in shape.

Lysosomes: Animal cells usually contain lysosomes, which are involved in cellular waste digestion. Plant cells have fewer lysosomes.

Functionality:

Plant cells are specialized for photosynthesis, allowing them to produce their food from sunlight.

Animal cells are adapted for various functions such as locomotion, digestion, and sensory perception.

What types of carbon fixation is least common for plants in arid locations?

Answers

The answer is a C3 fixation.

Plants are located in different regions with a different condition, so they had to adapt the carbon fixation. There are three types of carbon fixation in plants - C3, C4, and CAM fixation. C3 and C4 plants open their stomata during the day while CAM plants open stomata during the night.
Plants in arid locations use CAM carbon fixation because of adaptation to water deficiency. In CAM plants, stomata are closed during the day and water loss is reduced. In the night when is colder, stomata open and carbon dioxide enters through stomata. In C4 carbon fixation, there is also adaptation to high temperatures thanks to enzymes that increase the rates of photorespiration, unlike the C3 fixation.

Answer:

A. C3!

Explanation:

What type of cellular transport requires a cell to use energy?A) Facilitated transport
B)Active transport
C)Diffusion
D)Osmosis

Answers

Answer:

d

Explanation:

C diffusion is the answer

Plants use the energy of sunlight toa. take water from the soil

b. carry out photosynthesis

c. exchange gases with the atmosphere

d carry out cellular respiration

Answers

B carry out photosynthesis 

Mendel's experiments demonstrated the law of dominance: traits are inherited as dominant and recessive alleles, and the dominant allele for a trait can mask the presence of the recessive allele. Occasionally, that law is contradicted: offspring exhibit a blend of their parents' traits. For example a red flowering plant when crossed with a white flowering plant would produce a plant with pink flowers. This type of inheritance pattern is called A) codominance. B) multiple alleles. C) incomplete dominance. Eliminate D) heterozygous dominance.

Answers

Answer:

Incomplete dominance

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

What is the largest and the main artery of the circulatory system

Answers

The largest of these is the aorta, or main artery, which carries nutrient-rich blood away from the heart. Another important vessel is the pulmonary artery which connects the heart with the lungs as part of the pulmonary circulation system.
i believe its the artery on my opinion
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