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padilas [110]
2 years ago
9

When a coelom is formed by introducing a gap surrounded by mesodermal cells at the base of the blastula, between the ectoderm an

d the endoderm, it is said to exhibit?
Biology
1 answer:
mariarad [96]2 years ago
3 0
Schizocoelic development

The coelom is a fluid-filled body cavity, where the internal organs are suspended in. It is the cavity between the wall of the body and the digestive tract.

In the schizocoelic development of the embryo, the coelom, called the schizocoel, develops as a split in the mesoderm. The outer layer of the mesoderm attaches with the ectoderm to form a body's musculature, while the inner layer attaches with the endoderm to form the wall of the digestive tract. 

This type of development is commonly found in annelids, arthropods, and mollusks. 

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Analyze this molecule and select all of the true statements below. Check All That Apply This molecule is adenosine triphosphate.
ira [324]

Answer:

ATP, is a molecule  called adenosine triphosphate.

This molecule takes part in coupled reactions:This molecule participates in a large number of biochemical reactions, this molecule is the energy contribution of reactions, it appears in the Krebs and glycolysis cycle.

This molecule is a type of nucleotide.

ATP is a nucleotide formed by three phosphate groups and an adenosine. The nucleotide is adenine with three energy-rich phosphate groups.

3 0
1 year ago
Soon after birth, a nurse almost drops osei. he spreads his arms, pulls them back in, and then cries. this is an example of ____
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This is an example of Moro reflex.

The Moro reflex is an automatic response to a stimulus that is usually present in all infants. It occurs as a response to unexpected loss of support, in which the infant have the perception of falling. The Moro reflex begins at birth, and usually disappears after 3 or 4 months. The Moro reflex involves three different parts which are; spreading out the arms, unspreading the arms, and crying.

4 0
1 year ago
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- Proper aseptic technique is crucial to ensuring growth of pure bacterial colonies. What is one experimental way you can test y
pogonyaev

Answer:

1. Aseptic techniques can be tested for their suitability by flaming the loop or by using agar slants.

2. Culturing equipment can be sterilized by three methods and these include wet heat, dry heat and filtration.

3. Inoculating needles are used for transferring bacterial culture to a soft agar medium. Inoculating loops are used to transfer culture into liquid medium or plate.

4. Growth plates or agar plates, Liquid media and Stab-tube media are used for growth of bacterial colonies.

Explanation:

1. A-septic techniques can be tested for their suitability by flaming the loop or by using agar slants. The loop is flamed to an extent that it becomes red-hot and is then cooled before picking up the organisms from the bacterial culture to be transferred. The hot loop is kept into the tube for a few seconds before removing the inoculum so that a bacterial aerosol is not produced.

2. Culturing equipment can be sterilized by three methods and these include wet heat, dry heat and filtration. Wet heat method is the most preferred method for sterilizing culture material using an autoclave. The material is heated using pressurized steam in an autoclave; which is an effective procedure for killing microbes, spores and viruses at 100◦C. However, it is interesting to know that pressurized steam has 7 times more heat than water at 100◦C which allows rapid delivery of heat and good penetration for sterilizing dense materials. High pressured steam hydrolyzes bacterial protein and removes any chances of contamination.  

Dry heat method kill microbes by oxidation of cells thus requires more energy and is conducted at a higher temperature of 121◦C for efficient sterilization.  

Filtration is another method of sterilizing liquids without heating and is performed by passing the solution through a filter with a pore diameter of 0.2 µm. The filter material used for sterilization can be heat-fused glass funnels or cellulose membranes. However, viruses can pass through these filters and filtration is not a preferred sterilization method.  

3. Inoculating needles are used for transferring bacterial culture to a soft agar medium because needles supports appropriate spreading of culture and produces growth along the stab line also.  

Inoculating loops are used to transfer culture into liquid medium or plate because it is free following and adequate spreading of culture is not required.  

4.Growth plates or agar plates are the best bet when morphology of the species is to be identified or a bacterial colony needs to be isolated. In this scenario, growth plates allow the separation of a single clone and aids microscopic analysis.  

In order to expand bacterial culture for the purpose of isolating DNA plasmid, liquid media is used. These liquid cultures allow easy inoculation of growth parameters such as antibiotics, and control of temperature and air pressure.  

Stab tube media is prepared by filling test tube with soft agar and is specifically designed for growth of bacteria in low oxygen conditions. The stab tube allows immersion of inoculation loop into the agar depth where oxygen is extremely low and bacterial colonies can be produced without any shaking of media.  

6 0
1 year ago
Which of these best describes the tiny leg bones that some whales have, which do not aid in their movement or serve any other fu
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Answer:

D. structures that have lost all or most of their function over evolutionary time

Explanation:

the question states that the leg bones are almost entirely unused because of evolution

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Which processes support the relationship between sediments and sedimentary rock in the rock cycle? Check all that apply. Sedimen
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Sediments are rocks that undergo cycles which is 1: they combine and accumulate. 2: They go through weather and erode. 3: They compact and cement. Hope this helps, you're welcome

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