BIOLOGY HIGH SCHOOL

Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is the most likely to have contributed to this similarity? A) exon shuffling
B) gene duplication
C) histone modifications
D) random point mutations

Answers

Answer 1
Answer:

Answer:

A) exon shuffling

Explanation:

Exon shuffling refers to the process of evolution of a new gene that consists of unique combinations of preexisting exons. These novel combinations of preexisting exons are formed when the interspersed repeats of introns of two different genes undergo the process of recombination.

The process of exon reshuffling is responsible for the presence of common domains between two otherwise different proteins of eukaryotes.

Example: Tissue plasminogen activator and epidermal growth factor are very different proteins but share the EGF domain.

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How is ATP made during the light reactions?

Answers

ATP made during the light reactions through the following steps

  • Absorptionof light energy from the Sun

  • Generation of NADPH

The light  energy which is trapped by chlorophyll from the Sun is used in the oxidation of water to generate electrons which is used in the conversion of NADP⁺ to  NADPH.

The light energy also drives the conversion of ADP to ATP through the movement of protons across a membrane. These protons return through ATP synthase to make ATP.

Read more on brainly.com/question/43600
In the light reaction, when electrons are transferred from photosystem 1 to photosystem 2, it goes through an electron transport chain. This ETC pumps protons into the thykaloid. Those protons diffuse out of the thykaloid through ATP synthase which energizes a phosphate group to bond to ADP. This creates ATP.

The cell that does not have a cell wall is the _____.

Answers

Answer:

Animal cell that does not have a cell wall.

Explanation:

  • An animal cell does not have a cell wall because they do need the cell wall.
  • The cell wall is present in plant cells, its function is to maintain the shape of the cell.
  • The function of the cell wall is to provide shape and structural support to the cell, it made up of cellulose.
  • If the cell wall is present in the animal then it will become stiff, and would not able to carry their usual work. So they lack a cell wall.

Thus the animal cell does not have a cell wall.
The plant cell has a cell wall; The animal cell is the cell without the wall. So it would be animal

Denzel's mom has asked him to organize the family's trash for disposal. Which of these items should he put with the hazardous waste?a. aluminum cans
b. Used batteries
c. vegetable waste

Answers

The answer would be used batteries. You would be able to recycle the vegetable waste within fertilizing and/or throw it away safely by disposing it in a trashcan since it is not a hazard towards the environment. As for aluminum cans, they are recyclable and are easy to use again once it is filtered through the system. However, batteries are NOT recyclable nor easy to dispose because they can release Alkaline which can harm the environment.

The correct answer is option B

The trash that can be harmful for the people should disposed off in the hazardous waste.

The used batteries should be dumped into it as it can be hazardous if it is exposed to the heat and pressure.

There can a minute explosion caused due to used battery if it is not kept safe in the receptacles. This waste cannot be recycled and reused.

Imagine that you work at the medical examiner's office for a major metropolitan city. As Chief Medical officer, you investigate suspicious deaths and provide toxicology services for the county. Unfortunately, it's been a busy week. In the past five days, seven people have died, all with similar symptoms. It is your job to examine the data and determine the cause of death for these victims. The first was a 12-year-old girl. Her parents said that she was awake in the middle of the night complaining of a stuffy nose and sore throat. They gave her an extra strength Tylenol and sent her back to bed. At 7am the next morning, the parents discovered that the girl had collapsed on the bathroom floor. An ambulance rushed the girl to a nearby hospital, where she was pronounced dead. That same day, paramedics found the second victim unconscious on his kitchen floor after what they thought was an apparent heart attack. Sadly, the victim's brother and fiancée also collapsed later that night while the family gathered to morn his passing. Both had taken Tylenol to help them cope with their loss shortly before collapsing; neither survived.In the next four days, four other similar deaths were reported, all in the same neighborhood and all with similar symptoms. Are these seven deaths related? What is causing these people to die? It is your job to answer these questions before more deaths are reported.Symptoms exhibited by most patients: (i)-Dizziness
(ii)-Confusion
(iii)-Headache
(iv)-Shortness of breath/rapid breathing
(v)-Vomiting
(vi)-Most deaths were very rapid, occurring within a few hours of symptoms.
Explain whether or not you think these 7 deaths are related, and what questions you would ask the families of the victims.

Answers

Answer:

There seems to be a definite association between these seven deaths as these individuals suffered from similar symptoms like headaches, dizziness, confusion, shortness of breath, and vomiting. Also, majority of these patients took Tylenol.  

The following are the questions that are needed to be asked from the victims' families or the caretakers:  

1. What was the frequency of consuming Tylenol by the victims before death?

2. Whether Tylenol was consumed immediately or sometime before the death?

3. One should inquire about the victims regarding previous medical history.  

When Japan was first formed it was a _________ landform created from _________.A. primary; weathering
B. primary; tectonic activity
C. secondary; weathering
D. secondary; tectonic activity

Answers

B. primary; tectonic activity. Japan was a primary landform and the island was created when one tectonic plate moved in relation to the adjacent plate. The earth or land shifted upward from the surrounding ocean.

What biome do you think you live in? explain

Answers

If you live in Texas then you live in the Grasslands. (Also called the Temperate Grasslands)

Answer:

If you live in Texas then you live in the Grasslands. (Also called the Temperate Grasslands)

Explanation:
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