BIOLOGY MIDDLE SCHOOL

Select the correct answer.The largest coral reef in the Western Hemisphere is located off which country's coast?
A.
Belize
B.
Mexico
C.
Trinidad and Tobago
D.
Cuba

Answers

Answer 1
Answer:

Answer:

A

Explanation:
Answer 2
Answer:

Answer:

The answer is A. Belize

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What initiates translation?a) tRNA brings the first amino acid to the protein chain

b) a ribosome detaches from the mRNA strand

c) a ribosome reads a start codon

d) mRNA leaves the nucleus for the cytoplasm

Answers

Answer:

c) a ribosome reads a start codon

Explanation:

Translation is a process in which a protein is synthesized messenger RNA in (mRNA). The process of translation occurs in ribosomes which mainly synthesize proteins. The ribosomes composed of many mRNA molecules and proteins.The ribosome translate mRNA molecule in three stages namely initiation,elongation and termination. During initiation ribosomal subunits binds to the start of the mRNA sequence.The a molecule of tRNA carries amino acid methionine which to the start codon of the mRNA sequence During elongation ribosomes continuously translate each codon.Amino acid added to a chain by means of a peptide bond.Termination occurs when a ribosome reaches a stop codon,

Answer:

c

Explanation:

a ribosome reads a start codon

Why is it important that the space in the chest get bigger

Answers

I think it's so your lungs can expand to help you breathe properly ? You may have to wait for some more answers to come through
So that the bees sure decreases and air is sucked into the lung to breathe

Which statement BEST describes the effects that stress has on the immune system?A.
Stress can lead to increased vulnerability to infections and immune deficiency disorders.
B.
Stress can lead to decreased infections and immune deficiency disorders.
C.
Stress can inhibit the production of red blood cells and platelets.
D.
Stress can decrease the likelihood of catching colds, flu, and pneumonia.

Answers

I would say A. Stress can lead to increased vulnerability to infections and immune deficiency disorders.

Answer:

its a

Explanation:

took  the test

Nutrients from digested food enter the blood stream through which process?

Answers

They enter the blood through the process of absorption.
They enter into the bloodstream by a process called absorption. It happens in the small intestine with the help of small finger like projections called villi.

Carbon’s valence is

Answers

Answer:

The carbon atom has four valence (outermost) electrons. Because of this unique configuration, it is easier for the carbon atom to share its four electrons with another atom or atoms than to lose or gain four electrons.

Explanation:

The carbon atom has four valence (outermost) electrons. Because of this unique configuration, it is easier for the carbon atom to share its four electrons with another atom or atoms than to lose or gain four electrons.

Describe the stages of the cell cycle. In your description of mitosis, list the four parts in the correct order.

Answers

Mitosis has 4 main parts: 
1)Prophase -  Chromosomes become visible, spindle fibres form, nuclear envelope dissolves.
2) Metaphase - Chromosomes line up in the middle of the cell.
3)Anaphase - Chromosome pairs separate to different sides of the cell by the spindle fibres.
4) Telophase - New nuclei are formed around each grouping of Chromosomes.
Cytokinesis then splits the cytoplasm into 2, forming 2 new daughter cells.

G1 phase - period of growth and activity.  Also, the time where the cell performs its function (ex. liver cells producing insulin)

S phase- synthesis - stage where DNA replication occurs

G2 phase - continued growth, building of spindle fibres and centrioles, both structures needed for Mitosis phase.
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