BIOLOGY HIGH SCHOOL

6. Air sacs in the lungs through which oxy-gen
and carbon dioxide diffuse into and
out of the blood are the​

Answers

Answer 1
Answer:

Answer: Alveoli

Explanation: Alveoli is the air sacs in the lungs through which oxygen and carbon dioxide diffuse into and out of the blood.

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A major unit of the genetic code is called a(n) _____. chromosome genome RNA gamete

Answers

A. Chromosome. A chromosome is a physical unit of an organism's genetic code.

B. A genome is not a "unit" of the genetic code.
C. RNA is not part of the genetic code.
D. A gamete is not part of the genetic code

A major unit of the genetic code is called a(n) _____. chromosome genome RNA gamete

Answer:

chromosomes

What do anaerobic organisms have in common with photosynthetic organisms?A.) They both appeared on Earth at about the same time.
B.) They both can only exist as single-celled organisms.
C.) They both need an energy source in order to survive.
D.) They both produce carbon dioxide as a waste product.

Answers

Ans is option C. They both need an energy source in order to survive.

Energy is an absolute necessity to survive on this earth. All living organisms need energy be it anaerobic or photosynthetic.  Photosynthetic organisms can make their own food in the presence of sunlight by photosynthesis and harness energy from it. Anaerobic organisms can also make their own food in the absence of sunlight with the help of inorganic molecules like hydrogen sulfide (H2S), ammonia (NH3), sulphur (S) etc.

Its just that anaerobic organism's way of harnessing energy is different from those of aerobes/photosynthetic organisms but they need energy source for sure.

How does oxygen enter a cell?A. Active transport
B. Facilitated diffusion
C. Simple diffusion
D. Osmosis

Answers

Answer:

C

Explanation:

Which of the following tissue types is made of cells that can expand to cross the entire human body?A. muscle tissue
B. connective tissue
C. nervous tissue
D. epithelial tissue

Answers

Answer:

The correct answer would be D. epithelial tissue.

Epithelial tissue is a type of tissue which covers all the surface of the body.

It is present on the skin, blood vessels, urinary tract, and organs.

Thus, they cover the body surface, line all the body cavities as well as hollow organs. In addition, it also helps in forming glands.

It performs various functions in the body such as protection, selective absorption, secretion, transcellular transport, and sensing.
Most likely muscular

What happens after genetically modified plasmids are inserted into bacteria?

Answers

The answer to the question is: Once a new DNA is inserted, the modified plasmid can be grown in bacteria for self-replication to make endless copies.
>The plasmid is genetically modified to produce 1 or 2 specific proteins from a pathogen and then purified for immunization.

>A plasmids are small double-stranded unit of DNA.They are  usually circular but sometimes linear, that exists independent of the chromosome and is capable of self-replication. Each plasmid carries only a few genes.

Which of the following describes why wetlands are important to the water cycle?A.Dense vegetation helps filter out pollutants in the water.
B.Open meadows help to filtr out pollutants in the water.
C. Dense vegetation allows for biological magnification in the water.
D. Open meadows allow for biological magnification in the water.

Answers

C and D are not good answers: biological magnification is not something to be desired, as it makes pesticides and heavy metals more pronounced as they move up the food chain.

Among A and B A is the better answer: the vegetation is dense and this helps to filter out pollution.

Answer:

a

Explanation:
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