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Dahasolnce [82]
3 years ago
6

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous

Biology
1 answer:
RUDIKE [14]3 years ago
3 0

Marine mammals , with few exception are viviparous.

Explanation:

  • Mammals are those animals which are characterized by the presence of mammary gland and body hair.
  • They feed milk to their young ones.
  • The vertebrates are classified as viviparous, oviparous and ovoviviparous depending on the way their young ones develop and are nourished during their embryonic and foetal development.
  • Viviparous animals are those which directly give birth to their young ones and have a distinct gestation period during which their babues develop inside their womb. These are placental mammals.
  • Oviparous animals are those which lay egg and the embryo develops outside mothers body.
  • Ovoviviparous  animals are those who do not lay their eggs but their eggs hatch inside their body .These are aplacental animals.
  • Most mammals are viviparous.

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photosynthesis?

Explanation:

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MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961.
andreev551 [17]

Answer:

All of the options are true for a MRSA infection.

Explanation:

<em>Staphylococcus aureus</em> is one of the most frequent pathogens causing hospital and community infections. <em>S. aureus</em> can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a  very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of S<em>taphylococcus</em> and some other bacteria. Also <em>S. aureus</em> can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat  MRSA infections  with the hope that can´t develop resistance to this new drugs.

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3 years ago
Ouabain is a specific inhibitor of the active transport of sodium ions out of the cell and is therefore a valuable tool in studi
Kay [80]

Answer:

1. Part A: No

2. Part B: Yes

3: Part C : Yes

4: Part D : No

Explanation:

1) Part A: Facilitated diffusion of glucose into a muscle cell:

No; sodium ion co - transport is required for active transport of glucose but not for facilitated diffusion of glucose

2) Part B: Active transport of dietary phenylalanine across the intestinal mucosa:

Yes; co - transport of sodium ions drives the inward movement of amino acids and can only occur if sodium ions are actively pumped back out again.

3) Part C: Uptake of potassium ions by red blood cells:

Yes; uptake of potassium ions can occur only via a pump that couples the inward pumping of potassium ions to the outward pumping of sodium ions.

4) Part D: Active uptake of lactose by the bacteria in your intestine

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3 0
3 years ago
How many newborn would you expect to have cystic fibrosis in a population of 10,000 people?
Marina CMI [18]

Answer:

6

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round 5.8 to a whole number at you will expect 6 people to have cystic fibrosis in a population of 10,000 people

3 0
3 years ago
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The correct answer is option C, For more kingdoms were introduced

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Not only this with in a kingdoms comes several phylum, these phylums were also reorganized and recategorised based on the discovery of more categories and subcategories.  

7 0
3 years ago
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