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Schach [20]
3 years ago
8

A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment witho

ut oxygen, dies when exposed to oxygen, and uses fermentation? A. Obligate anaerobe B Heterotroph C. Facultative anaerobe D. Photoautotroph
Biology
2 answers:
Anni [7]3 years ago
5 0
It's letter A - Obligate anaerobe.

<em>Obligate anaerobes</em> are microorganisms killed by normal atmospheric concentrations of oxygen. A <em>facultative anaerobe</em> prefers to produce energy in the presence of oxygen but can survive without it. <span>A <em>photoautotroph </em>is an organism that converts light energy into chemical energy. </span><span>Prokaryotes may perform </span>aerobic<span> (oxygen-requiring) or </span>anaerobic<span> (non-oxygen-based) metabolism and some can switch between these modes. Since we're talking about an environment without oxygen and dies when exposed to oxygen, the preferable answer is A.</span>
Licemer1 [7]3 years ago
3 0

the answer is B. OBLIGATE anaerobe. it is the only one that is poisoned by oxygen. if you want to see for yourself just type into google (obligate anaerobe)  Took the test and got a 100% :)

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6. Why does meiosis increase genetic variation in the offspring, but mitosis does not? (1 point)
brilliants [131]
Meiosis involves crossing over where chromosomes exchange genetic segments, resulting in different sets of chromosomes. Each time an egg or sperm created, it is different due to this recombination. Mitosis on the other hand is non-sex cells replicating exact copies of themselves which lead to no genetic variation as they aren't involved in producing offspring.
3 0
3 years ago
Match the following terms and definitions. 1. an electrical nerve impulse sent by nerve fibers to the central nervous system for
vladimir1956 [14]

Answer:

1. an electrical nerve impulse sent by nerve fibers to the central nervous system for interpretation. <u>Action potential. </u>

2. neurons that detect chemicals such as those found in food. <u>Chemoreceptors. </u>

3. type of eyes many arthropods have; eyes that protrude outward and consist of many lenses. <u>Compound eyes. </u>

4. the structure that gives the response to an environmental change.<u> Effector</u>

5. neurons that detect electrical fields. <u>Electroreceptors. </u>

6. secretion of hormones into the blood stream to affect distant processes. <u>Endocrine.</u>

Explanation:  

An action potential is a change in the internal charge of a cell due to depolarization. These changes allow the transmission of a message from any part of the body to the central nervous system. The central nervous system will interpret the message and will give a response.

There are different types of receptors in our bodies. Chemoreceptors are the ones that detect chemicals and produce an action potential or a neurotransmitter. These receptors respond to chemicals. Another type of receptor is the electroreceptors. They detect electrical fields and are only on the skin of aquatic animals.

Compound eyes have a large number of ommatidia. As a result, the anthropods with this type of eyes have a large view angle. In other words, every ommatidium sees an image, and the final product is a combination of all of them.

The effector is the structure that gives an answer once an affector has sent the message to the nervous system that there was a change in the environment.

There are different kinds of secretions, autocrine, paracrine, and endocrine. In the endocrine secretion, the gland secrets hormones into the bloodstream so that they can travel long distances up to their target cell, which is far from the gland.

3 0
3 years ago
A person who has type AB blood and is heterozygous for Rh factor has children with a person who is heterozygous for type A blood
MatroZZZ [7]

Blood type is determined by the alleles coding for the antigen present on cell membranes.

The person with type AB blood has a heterozygous Rh factor.

  • Half the gametes have Rh factor (+) and the other half are negative for Rh factor (-)
  • Half the gametes have IA and the other half have IB
  • The possible gamete combinations are IA+, IA-, IB+, IB-

The person with heterozygous type A blood is negative for Rh factor

  • All gametes are negative for Rh factor (-)
  • Half the gametes have IA and the other half have IO
  • The possible gametes are IA-, IO-

The genotype ratio is 1:1:1:1:1:1:1:1

The phenotype ratio is 2: 2:1:1:1:1.

Learn more about blood types here:

brainly.com/question/21209477

#SP10

8 0
2 years ago
How long are spices good for after expiration date?.
sdas [7]

Answer:

Whole spices will stay fresh for about four years, while ground spices run between three and four years

Explanation:

6 0
3 years ago
Read 2 more answers
Where does most of the matter that makes up a tree come from? How do you know?
Alex73 [517]

Answer:

The sun

Explanation:

All living things (plants) can't grow without the sun. The sun is what starts plant growth. The plants absorb energy from the sun to grow and to make food. The green in plants are even from the sun! This is why most of the matter that makes up a tree comes from the sun!

Hope it helps!

4 0
3 years ago
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