BIOLOGY HIGH SCHOOL

Tryptophan is a/an _______.

Answers

Answer 1
Answer: Tryptophan is an α-amino acid that is used in the biosynthesis of proteins.

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a clinical microbiologist makes serial dilutions of several antimicrobial drugs in broth and then incubates each drug dilution with a standard amount of a patient's isolated pathogen. what is this microbiologist setting up? group of answer choices a kirby-bauer technique a minimum inhibitory concentration (mic) test an antibiogram an ames test a therapeutic index (ti)
What are the structures that contain the DNA of each cell? A. Ribosomes B. Golgi bodies C. Chromosomes D. Cell membrane
How does mass extinction affect species that survive?There are no surviving species if a mass extinction occurs. They will soon become extinct. They combine gene pools. They fill new roles in the changed environment.
What happens when introducing a gene into a new organism
An animal that hides under a rock to avoid predators is responding to a(n) _____ stimulus.

Which was the first cell viewed by the light microscope?

Answers

Answer:

The correct answer will be- the bark of an oak tree by Antonie Van Leeuwenhoek

Explanation:

The development of light microscopy began before the 18th century where a scientist named Antonie Van Leeuwenhoek observed the first living cells of the organisms.

Although the first cell was observed by the Robert Hooke when he observed the dead cells of the bark of a tree bu the light microscope designed by the Leeuwenhoek helped him to observe the living cells from the pond life and he also observed the bark of an oak tree.

Thus, the bark of an oak tree by Antonie Van Leeuwenhoek is considered the first cell.
Oak Bark was the first cell viewed by the light microscope

Coupled transporters that move solutes in the same direction are called _______. antiporters uniporters symporters isoporters

Answers

Symporters are the transporters that move solutes in the same direction

Explain how humans add carbon dioxide to the atmosphere and how they can reduce the amount of carbon dioxide in the atmosphere

Answers

Humans add carbon to the atmosphere in many ways. For example:
- Car emissions
- Factories
- Electric powerplants
- Fires
- Etc.

We as humans can reduce our carbon footprint by using more efficient ways of powering our lives by:
- Using renewable energy sources
- Turning off devices when not in use
- Not keeping cars on idle
- Etc.

Answer:

If you drive your car less and don't carpool, you will reduce the amount of carbon dioxide in the atmosphere. Another thing is to stop the factories from producing as much carbon dioxide released into the atmosphere.

Hope this helps.

Which of the following is the best example of a secondary source?a. The Diary of Anne Frank
b. A text book discussing the causes of WWII
c. A photo featuring a farmer collecting his crop
d. A television interview with a person who survived Hurricane Katrina

Answers

Answer: Option B

Explanation:

A historical research project, secondary sources can be defined generally as scholarly books and articles.

This sources first analyses and interprets the primary sources. These sources contains pictures, graphics and quotes.

A secondary source is usually used to describe an event or incident with the help of picture, quotes and graphics.

hence, the correct answer is option B
b. A text book discussing the causes of WWII

this is because this book wasnt written by people who fought in WWII

Which of these organelles is covered in ribosomes?   A. Golgi apparatus   B. Large vacuoles   C. Rough endoplasmic reticulum   D. Smooth endoplasmic reticulum

Answers

Answer:

(C).Rough endoplasmic reticulum

Explanation:

Endoplasmic reticulum (ER) is a membrane-bound cell organelle, present in eukaryotic cells. There are two types of endoplasmic reticulum, smooth ER and rough ER.  

Rough ER contains ribosomes on its outer surface (side, which is in contact with cell cytosol), while in smooth ER surface, ribosomes are absent. This is because ribosomes provide platform for the process of protein synthesis or translation.

Proteins synthesized by ribosomes present in rough ER surface are then transported to it (rough ER) for sorting and  post-transnational modifications.

Thus, the correct answer is option (C).

 
C. rough endoplasmic reticulum

In a large city experiencing urban blight, we would be surprised to find

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In a large city experiencing urban blight, we would be surprised to find a building that looks strong and sturdy. Also, new buildings that do not appear to be crumbling would be a surprising sight to see as well. Lastly, it would be surprising to see a few people living in homes that look in good condition.
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