BIOLOGY HIGH SCHOOL

Which feature is found most often in prokaryotic cells?A) plasmid
B) flagella
C) cytoplasm
D) cell membrane

Answers

Answer 1
Answer: I would go with the plasmid because the covering is made of it
Answer 2
Answer: If we're saying found more often in prokaryotic versus eukaryotic cells, the answer would probably be flagella. Eukaryotic and prokaryotic cells all have cytoplasm and cell membranes at the very least, and its more common in prokaryotic but eukaryotic cells could also have plasmids. Flagella could be occurrent in eukaryotic cells as well, particular in unicellular organisms like protists and even sperm cells, but that feature is probably more common with prokaryotic cells out of all the options in the list. 

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What is the relationship between the zooxanthellae and the hard coral, the remora and the manta ray, the tiger shark and the green sea turtle, and the dolphin and the school of trevallies and state why you chose that relationship. The relationships will be predation, competition, commensalism, or mutualism.

Answers

The Zooxantelae and the hard coral are in a mutualistic relationship. This means that both the hard coral and the algae benefit from this relationship. The coral gets extra nutrients produced by the photosynthesizing algae, and the algae gets protection and a stable environment by living inside the coral tissue.

The case of the remora and the manta ray is a perfect example of commensalism. In this type of relationship, one of the participants has benefits, and the other participant has no benefits, nor costs. The remora gets ''leftovers'' from the manta ray, and possible protection from larger predators and the manta ray does not benefit from this relationship.

The tiger shark prays on the green sea turtle, so this is a clear example of predation.

The trevallies and the dolphins are both apex predators, therefore they are competing against each other for pray.
Zooxanthellae and the hard coral-Zooxanthellae are the symbiotic algae that live within the hard or stony corals. The symbiotic relation is based on the coral's inability to generate sufficient amounts of food and the algae’s ability for photosynthesis and converting chemical elements into energy. - mutualism

The remora and the manta ray-The benefits to the remoras and remora for living in such close association with their larger hosts are clear, but there is a debate about whether the manta rays receive a significant return in benefits from these relationships. - mutualism

The tiger shark and the green sea turtle - the turtle is eaten by the shark-predation

The dolphin and the school of trevallies-To feed, dolphins use a fast, surprise attack, and, unlike the hunting packs of trevallies, dolphins can successfully hunt alone. - predation

I hope that this is the answer that you were looking for and it has helped you.

2. (a) Read through the following passage about mitosis and then completeit by writing the most appropriate word or words in the spaces.
In flowering plants the process of mitosis is restricted to the apical
and to
In growing mammals
mitosis can occur throughout the body.
However, not all regions of the young mammal grow at the same
rate and this is called
growth.
In the cell cycle, replication of DNA occurs in the..
.............phase,
after which there is a lag or gap phase, called the
phase,
before actual mitosis starts. The chromosomes also replicate before the
onset of mitosis, but this replication is not visible until the middle of the
. stage.
At this stage, each chromosome consists of two
..held
together by a

Answers

Answer:

This question is incomplete  

Explanation:

This question is incomplete but there are some general facts that can be made.

Firstly, mitosis only occurs in meristematic tissue of plants which includes apical and lateral meristems

There are 4 phases in a cell cycle

1) G1 (gap 1) phase: This is the first phase of the cell cycle that has to do with an increase in the size of the cell. Major cellular components duplicate in size here.

2) S-phase: DNA replication occurs here.

3) G2 (gap 2) phase: This is the gap phase that comes after the S-phase. The cell undergoes further growth here and the organelles of the cells are also prepared for cell division.

4) Mitotic phase: There are four stages here

i) prophase: Chromosome condenses and becomes visible at this stage. And there is the emergence of spindle fibre from centrosomes.

ii) metaphase: Spindle fibre develops and sister chromatids are attached to

separate spindle.

iii) anaphase: Cohesin, which holds two sister chromatids (of chromosomes) together, breaks down and are pulled towards opposite poles.

iv) telophase: Chromosomes begins to decondense at opposite poles and actual cell division starts as mitotic spindle breaks down.

NOTE: All possible answers to the question are underlined

A _____ is an autotroph or organism that can produce its own food while a ________ or heterotroph must eat another organism to obtain energy.producer, meat eater
consumer, producer
producer, consumer

Answers

the answer is producer and consumer

Saliva begins to change food starch into?

Answers

The first step of chemical digestion starts in the mouth. Saliva, the fluid released by the salivary glands in the mouth, contains an enzyme that breakdowns food starch and turns it into simple sugars. This enzyme is called amylase or also known as alpha-amylase or ptyalin. 

Saliva begins changing starches into sugar while still in the mouth.

Explanation:

Which would have to happen to keep the population growth of cheetahs in the same of 2013

Answers

Conservation efforts

It is true that conservation efforts have resulted in restoration of some wildlife habitats. Since some animals, over the change of time and of human’s abusive efforts,  could no longer live, the governmental an non-governmental organizations and volunteers are now doing ways to alleviate the said problem and so far it has been effective as som species close to extinction was saved (e.g. platypus).

What are character traits that people work toward, in order to become better human beings?

Answers

respect towards others and doing good or helpful deeds for older people.
People work to be respected, to be persistent, empethetic, intuitive, creative, passionate, a good listener, responsible, a leader, honest, courageous, self-aware, and to be Whole-hearted...
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