Question

23. Cells that need to make a lot of protein are expected to have a large number of ________________.

Answer 1

1. Cells that require abundant protein are known to have a large number of ribosomes.

2. The cell’s constant internal chemical and physical conditions are known as homeostasis.

3. Water molecules are responsible for replenishing the electrons that are lost by the chlorophyll.

4. A cell with 5 chromosomes will have 10 chromatids during the G2 phase.

5. Adult skin cells are unable to become other kinds of cells as they have undergone the differentiation process.

Further Explanation:

1. Cells are required to produce proteins. The enzymes composed of proteins are mainly used to aid in speeding up the biological processes. Proteins are responsible for supporting the cellular functions and are pierced within the cell membranes. Whenever cells require to make proteins, it seeks for ribosomes. These are protein maker of the cell. Therefore, it is believed that cells with many proteins have an abundant number of ribosomes.

2. Homeostasis refers to the condition of steady internal chemical as well as the physical environment which is regulated by the living systems. This state of equilibrium refers to the condition of optimal functioning for the organism and involves many variables like fluid balance and body temperature. Homeostasis is brought through a natural resistance to alter when already in the most favorable conditions.

3. Photosystems are basically the functional as well as structural units of the protein complexes which are involved in the process of photosynthesis that run out the primary photochemistry of the photosynthesis process.

There are 2 kinds of photosystems:

• photosystem 1  

• photosystem 2

During the photosystem 2 reaction center, the energy coming from the sunlight is mainly used to pull out the electrons from the water. These electrons then move via the chloroplast electron transport chain reaction towards the photosystem 1 and reduce NADP+ to NADPH.

4. The cell cycle refers to an ordered flow of events which includes cell growth as well as cellular division. This cycle produces 2 new daughter cells. The cycle starts with interphase; during which, the cell grows and divide its own DNA or deoxyribonucleic acid. Chromatids refer to the term which describes the duplicated state of the chromosome. This means that 5 chromosomes will have 10 chromatids during the G2 phase.

5. Undifferentiated cells refer to the cell which has not developed into a specific cell variant. The undifferentiated stem cells are known to be very basic cells found in the living systems which all other cells derived from. The very few cells found in the embryo is known to be undifferentiated. A common example of this is stem cells. Once the undifferentiated cell undergoes the process of cellular differentiated and forms a specific cell type then it is called a differentiated cell. For example, skin cells.

Learn more:

1. Learn more about component of DNA brainly.com/question/334927

2. Learn more about base pairing brainly.com/question/2491455

3. Learn more about RNA base pairing brainly.com/question/2416343

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell Biology

Keywords:

Homeostasis, cell, skin cells, differentiated cell, undifferentiated cell, stem cells, chromosome, cell cycle, G2 phase, chromatid, chlorophyll, chloroplast, photosystem 1, photosystem 2, photosynthesis, homeostasis, plasma membrane, ribosomes, proteins, nucleus.

Answer 2

23. The right answer is Ribosomes.

A ribosome is a cytoplasmic organelle, synthesized by the nucleolus, consisting of proteins and ribonucleic acids and at the level of which protein synthesis is carried out, starting from the amino acids of the cytoplasm, according to the information provided by a messenger RNA. This cytoplasmic organelle allows translation (deciphering mRNA and protein synthesis).

24. The right answer is Homeostasis

Homeostasis is a process by which a key factor (eg, temperature, acidity, blood pressure, blood sugar, ..) is maintained around a saturation value beneficial to a system under consideration, through a regulation system.

For example, glucose, a hexose (monosaccharide sugar composed of 6 carbon atoms) is the only energy substrate used by erythrocytes (red blood cells) and cells of the nervous system under physiological conditions. In addition, glucose is a very important energy source for muscle cells at work and is also needed for storage of free fatty acids in adipocytes. All these processes are regulated by hormones such as insulin, glucagon, adrenaline, cortisol ...

25. The right answer is Water

Photophosphorylation involves both photosystems (I and II) with the reaction centers (P700 and P680). The light energy causes the excitation and the departure of an electron from a chlorophyll molecule of photosystem II. To compensate for this loss, the latter recovers an electron from the photolysis of the water molecule:

H2O ---> 2 H + + 1/2 O2 + 2e-

26. The right answer is Ten (10)

In phase G2 (the one following phase S, consisting in replicating the DNA in two copies), we will recover the genetic capital of the doubled cell, with a view to its preparation for division (mitosis or meiosis). So if the G1 phase cell has 5 chromosomes (each chromosome is represented by a chromatid), it will have 10 chromatids in the G2 phase (always 5 chromosomes but each chromosome is represented by 2 sister chromatids).

27. The right answer is Differentiation

Cell differentiation consists of a cell-specific acquisition of cell type specific characters, such as cytodifferentiation. A cell is differentiated.

It is thus a process by which the cells take on particular morphological and physiological characters, different according to the tissues. Cell differentiation is a little less marked in plants than in animals, where the specialization of organs is more extensive.

This process is irreversible, that is to say that one can not obtain a stem cell (multipotent) from a cell already differentiated such as the cells of the skin.