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Zina [86]
3 years ago
9

The fourth week after conception, growth is rapid. The neural tube along a baby's back is closing and the baby's heart is pumpin

g blood. If this neural tube does not close properly, a condition called ____________ may result. A) fragile X B) spina bifida C) cleft palate D) Down's syndrome
Biology
2 answers:
Romashka-Z-Leto [24]3 years ago
7 0

THe correct answer is B. Spina bifida.

Explanation

Neural tube or NTD defects are birth defects of the brain and spinal cord. These defects change the shape or function of one or more parts of the body. Also, they can cause problems in general health, and the development or functioning of the body. These defects occur in about 3,000 pregnancies per year in the United States. One of the most common NTDs is spina bifida in which the tiny bones of the spine do not close completely, and a part of the spinal cord sold by the spine. Children with spina bifida lose mobility of the legs and problems with bladder and bowel control that make it difficult for them to go to the bathroom to meet their physiological needs. So, the correct answer is B. Spina bifida.

lukranit [14]3 years ago
4 0
It would be B) spina bifida.
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Explanation:

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in what type of connective tissue will the cells appear to be ""empty"" when looking at them under the microscope?
madam [21]

Answer:

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2 years ago
The nurse is assigned to watch the cardiac monitors in the constant care unit and notes four different clients displaying arrhyt
Tresset [83]
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5 0
3 years ago
As a class, penicillins usually are more effective in infections caused by which type of bacteria?
Bezzdna [24]

In gram positive bacteria have a peptidoglycan layer outside of the cell wall. Gram negative bacteria have peptidoglycan between membranes.

The natural penicillin have activity against non beta lactamase producing gram - positive cocci, which includes such as - viridans streptococci, anaerobic streptococcus. Penicillin work indirectly bursting bacteria cell walls. It kills bacteria through binding of that betalactum ring.

Gram positive bacteria have a much thicker layer of peptidoglycan and lack of the protection of an outer membrane. This class , penicillin was first antibiotic to be used widely and prevents the final cross linking step. There are some more classes of penicillin like- natural , penicillin-stable, aminopenicillins and extended-spectrum penicillin.

To learn more about gram positive bacteria here

brainly.com/question/13794411

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5 0
1 year ago
Help me please!!
Masja [62]

Answer:

1. Both

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Explanation:

in 1, we need time therefore both. In 2, Lamarck because in Darwinian evolution, species change not organisms. In 3, Darwin because of natural selection, mutation, and probably a little bit of heredity. 4 is Darwin because in Lamarckian evolution. 5 is Lamarck because based on natural selection, organisms should go extinct. 6 is both because they both rely on the environment. 7 is both because of heredity. 8 is Darwin because in Lamarckian evolution, traits acquired throughout ones lifetime can be passed down to offspring. 9 is Lamarck because in Darwinian evolution, organisms do not decide their traits. 10 is both because both idea ssupport the idea that organisms, be it in Lamarckian or Darwinian evolution, are still and will carry out on changing.

5 0
2 years ago
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