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Tatiana [17]
3 years ago
13

A mutation in which one nucleotide is substituted for another is called a ____________.

Biology
1 answer:
White raven [17]3 years ago
5 0
A mutation in which one nucleotide is substituted for another is called a point mutation. 
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How were sucrose and cellulose formed
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The molecules are joined by loss of water to give the disaccharide sucrose.
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3 years ago
Which of the following statements about lysosomes is false?
ipn [44]

Answer:

The correct answer is option b. "Lysosomes synthesize proteins from the recycled amino acids".

Explanation:

Lysosomes are organelles of eukaryotic cells which main function is the digestion and removal of waste by the action of degradative enzymes. Is false to affirm that lysosomes synthesize proteins from the recycled amino acids, on the contrary, lysosome function is to degrade proteins not synthesize them.

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Which natural event produces oxygen, which can then be used by humans and other organisms
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Photosynthesis by producers right
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Question 3<br> Which of the following statements about environmental changes is true?
Serggg [28]

Answer:

The options are

A) they may affect several populations in an ecosystem

B) they cannot be caused by human activity

C) they affect food chains but not food webs

D) They have no effect on living organisms in an ecosystem him

The answer is A) they may affect several populations in an ecosystem

Explanation:

Environmental changes include deforestation and climate changes. Organisms depend on their habitat and climatic conditions for their survival because it determines their food availability too.

When environmental change occurs they may affect several populations in an ecosystem.

8 0
3 years ago
List the cardiovascular and cardiac features unique to the fetus and describe their role in fetal circulation; explain the fate
STatiana [176]

Cardiovascular features unique to the Fetus:

Fetal circulation is characterized by low systemic vascular resistance (SVR) with high systemic blood flow and high pulmonary vascular resistance with low pulmonary blood flow.

<h3>What is fetal circulation?</h3>

The embryonic circulatory system directs blood that needs oxygen through three shunts, or microscopic tunnels. These shunts are intended to avoid forming organs like the liver and lungs while the fetus is still in the womb.

The foramen ovale, which carries blood from the right atrium of the heart to the left atrium, and the ductus arteriosus, which takes blood from the pulmonary artery to the aorta, are the two shunts that bypass the lungs.

Through the placenta, the mother's blood supplies the fetus with nutrition and oxygen. The enhanced blood divides into three branches as it travels via the umbilical cord to the liver.

Learn more about fetal circulation with the help of the given link:

brainly.com/question/7191531

#SPJ4

7 0
1 year ago
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