BIOLOGY HIGH SCHOOL

Images to promote fitness often lead readers to a certain conclusion about appearance. Which of the following is a practice teens most frequently experience?A. A focus on feeling good about their looks
B. A focus on their appearance
C. A focus on feeling great inside
D. A focus on their health and fitness

Answers

Answer 1
Answer: The correct answer should be B. a focus on their appearance. A is incorrect because teens rarely feel good about the way they look, they are always insecure about their body. C is incorrect because teens prefer to look good on the outside than on the inside. And D is incorrect because unfortunately they don't take a lot of care about their health and fitness.
Answer 2
Answer:

Answer:

B. A focus on their appearance

Explanation:

Related Questions

Which of the following best pairs the leaf structure with its role?
In a balanced ecosystem, the number of______ is far greater than the number of________ .first blank: (producers, tertiary consumers, herbivores)second blank: (consumers, omnivores,secondary consumers)
As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. which characteristic of water causes adhesion? Help A ) CohesionB ) Solvent capabilitiesC) ability to change stateD) Hydrogen bonds ​
The main function of the bladder is _____.circulation filter storage protection
What type of animal is a polypod?a. one-footed animalb. two-footed animalc. four-footed animald. many-footed animal

What is the larger mean of these two samples?Sample A: 23, 26, 30, 28, 25
Sample B: 31, 20, 29, 27, 24
A. 11
B. 26.2
C. 26.4
D. 132

Answers

the answer is C not B

Explain why red blood cells are unable to replace damaged proteins

Answers


The sole reason why red blood cells are unable to replace damaged proteins is that red blood cells lack DNA and cell organelles such as nucleus, ribosomes and mitochondria which are crucial for protein synthesis, assembly and repair. In other words they lack both the information and the machinery for making or repair of proteins.

Due to  lack of DNA and cell organelles, red blood cells cannot be able satisfy the central dogma which  summarizes synthesis of proteins as DNA → RNA → proteins.

DNA has the genetic information on how proteins should be made, RNA is responsible for transferring the information from DNA in the cell nucleus to the ribosomes  in the cytoplasm,  then translating or decoding  this information, which results in the making of  protein.

Final answer:

Red blood cells (RBCs) are unable to replace damaged proteins because they lack a nucleus and organelles, including mitochondria. Instead, new RBCs are constantly produced in the bone marrow to replace damaged or aged ones. When RBCs are damaged or aged, macrophages phagocytize them.

Explanation:

Red blood cells (RBCs) are unable to replace damaged proteins because they lack a nucleus and organelles, including mitochondria. This means that RBCs cannot synthesize new proteins to replace damaged ones. Instead, RBCs have a limited lifespan and are constantly being replaced by new RBCs produced in the bone marrow. When RBCs are damaged or aged, they are phagocytized by macrophages in the spleen, liver, and bone marrow.

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Why do we need classify organisms?

Answers

To understand and separate organisms, which would help in the case that something were to happen to any organism, and with classification, we would be able to use the knowledge to help or get rid of it.

Which statement illustrates how human activities can most directly change the dynamic equilibrium of an ecosystem?Water pollution causes a decrease in fish populations in a river.
A hurricane causes a stream to overflow its banks.
Increased wind increases water evaporation from a plant.

Answers

The best answer would be the first statement. The first sentence which is 'water pollution causes a decrease in fish populations in a river.' illustrates how human activities can most directly change the dynamic equilibrium of an ecosystem.

Answer: Water pollution causes a decrease in fish populations in a river.

Explanation:

An ecosystem is a biotic community which includes abiotic (non-living) and biotic (living) components. The abiotic components includes water, sunlight, wind, soil and temperature whereas the biotic components includes the living beings such as plants, animals, microbes and other. The dynamic equilibrium of the ecosystem can be defined as the condition in which the abiotic factors of the ecosystem supports the life of the biotic factors without undergoing any drastic change which could negatively affect the population of living beings.

The river water is an abiotic factor which can be a habitat of large diversity of marine flora and fauna. The pollution of water could negative affect the population of the fish residing in the river. This will disturb the balance of ecosystem. As, in the ecosystem various species interact with one another to survive. Hence, the dynamic equilibrium will be changed.

The mass of an atom is contained primarily in its _____. A. Electron Shell B. Nucleus C. Proton D. Size

Answers

The mass of the atom is contained mainly in the nucleus itself. The nucleus is composed of a number of protons and neutrons which are positively charged and neutrally charged sub particle components. The nucleus are surrounded by electrons.
The mass of an atom is contained primarily in its NUCLEUS.
An atom is made up of three sub particles, which are proton, neutrons and electrons. The proton and the neutrons are located in the nucleus of the atom while the electron  are located outside the nucleus where they move about in continuous motion around the nucleus. The proton and the neutrons, which are located in the nucleus have the same relative mass of 1, which has been estimated to be about 2,000 times bigger than that of the electron, which has a relative mass of 0.0005. This shows that, the mass of an atom is located primarily in its nucleus. 

Three environmental factors that affect Salmonella growth and
survival.

Answers

Answer: Temperature, Humidity(can go hand in hand), pH, and sunlight to name a few

Final answer:

Three environmental factors that affect Salmonellagrowth and survival are temperature, moisture, and pH level.

Explanation:

Salmonella is a type of bacteria that can cause food poisoning in humans. It is commonly found in raw or undercooked poultry, eggs, and other food products. The growth and survival of Salmonella are influenced by various environmental factors. Three important factors that affect Salmonella growth and survival are temperature, moisture, and pH level.

Temperature: Salmonella bacteria thrive in temperatures between 40°F (4°C) and 140°F (60°C). This temperature range is known as the danger zone for bacterial growth. At temperatures below 40°F, Salmonella growth slows down, while temperatures above 140°F can kill the bacteria.

Moisture: Salmonella requires a moist environment to grow and survive. High levels of moisture provide favorable conditions for bacterial growth. Dry environments, on the other hand, can inhibit Salmonella growth.

pH Level: Salmonella bacteria prefer a slightly acidic to neutral pH range of 4.0 to 7.0. Extreme pH levels, either highly acidic or highly alkaline, can inhibit the growth of Salmonella.

Understanding these environmental factors is crucial in preventing the growth and spread of Salmonella in food and other environments.

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