Biology High School

Which of the following is a developmental issue that occurs when an infant's vertebral column does not close all the way?

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Answer 1

Answer:

d. Spina bifida

Explanation: is correct

Related Questions

What are the two types of reactions enzymes facilitate?

Answers

catalyzed and uncatalyzed

The main structural distinction between the left atrium and the right atrium is that the left atrium has the _____, and the right atrium does not.
a. auricle
b. pectinate muscles
c. cardiac muscles
d. chordae tendinae

Answers

Given our understanding of cardiac anatomy, we can confirm that the main structural distinction is that the right atrium has the pectinate muscles, while the left one does not.

Firstly, we must address that there is a wording issue with the question. In reality, it is the right atrium that contains the pectinate muscles. The remaining options either correspond to both atrium, or neither.

The auricle is another word for ear. This is a cavity present on both the right and left atrium which allows them to extend their blood carrying capacity in situations of need. This option cannot be correct for the question since both atria possess one.

As for options b and c, cardiac muscle is present in the entirety of the heart. Cardiac muscle is the muscular cells that make up every wall and cavity of the heart and allow it to complete its unique function. Chordae tendinae, are fibers present in the ventriculus that attach the walls to the tricuspid valve, these are not present in either of the atria.

Therefore, we can confirm that though the wording is off, the intended correct answer is pectinate muscles, given that the right atrium is characterized by their presence, whilst the left atrium contains few, if any, of these muscles.

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Answer: Auricle

Explanation: Just took the test

Blood vessel diameter fluctuates between being constricted and being dilated. This is the primary contributor to blood pressure. In order for blood vessels (arterioles) to maintain a steady pressure, there must be a prolonged presence of what ion in the smooth muscle cell's cytosol

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In order for blood vessels to maintain a steady pressure, there must be a prolonged presence of CALCIUM ions in the smooth muscle cell's cytosol. This ion initiates smooth muscle contraction.

Arterioles are blood vessels that have muscular walls consisting of one or two layers of smooth muscle cells.

Calcium (Ca2+) ions start the contraction of the smooth muscle cells by binding to calmodulin protein and thereby activating myosin.

In consequence, Ca2+ ions act as a secondary messenger that activates calmodulin, stimulating the phosphorylation of the myosin light chain and thus triggering muscle contraction.

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Hurricane Katrina chart

Please I’m doing a project and I need help ! I’ll give 20 points and maybe even brainliest

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Answer:

Explanation:

A place where animals and plants are protected is called

A) an ecosystem
B) a refuge
C) a sanctuary
D) both B and C

Hello! can someone help me w this pls

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A place where animals and plants are protected is an ecosystem

What type of molecule controls photosynthesis

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Answer:

Chloroplasts, I believe

Explanation:

Which one of the following parasites affect all domestic animals?
A.Ticks. B. Mites
C. Tsetse fly D. Fleas

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Answer:

D fleas affect all animals

Answer:

Explanation:

FLEA THE NAME ORDER IS SIPHONAPTERA

Why is apoptosis important to cells.

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Apoptosis removes cells during development. It also eliminates pre-cancerous and virus-infected cells, although “successful” cancer cells manage to escape apoptosis so they can continue dividing. Apoptosis maintains the balance of cells in the human body and is particularly important in the immune system.

100!!! POINTS!!!!
On the map, take a close look at the boundary along southern California and Mexico’s Baja California Peninsula. The arrows on the map show the direction and speed of the plates along this boundary in millimeters per year. Based on the speed and direction of the arrows, identify the type of plate boundary at this location. Which landforms or events are likely to occur there as a result? (Hint: It may be helpful to model the motion of the plates using your hands or pieces of paper.)

Answers

Explanation:

Thus, at convertgent boundries, continental crust is created and oceanic crust is destroyed. Two plates sliding past each other forms a transform plate boundry

The area around the convergent boundries, continental crust is created then the oceanic crusts were destroyed.

What are land forms?

The term land form is used to describe the physical features that describe the geography of any particular area.

Looking at the map, in the area around the convergent boundries, continental crust is created then the oceanic crusts were destroyed.

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#SPJ2

Mastication is performed by which of the following accessory digestive organs?

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Answer:

d. All of the above

Explanation: is correct

during replication, which enzyme unwinds the dna double helix?

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DNA helicase enzyme unwinds and breaks H bonds between the 2 complementary strands using ATP to separate the 2 strands.

4. View of space from earth keeps on changing because earth is.....?

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Answer:

Earth does not always spin on an axis running through its poles. Instead, it wobbles irregularly over time, drifting toward North America throughout most of the 20th Century (green arrow). That direction has changed drastically due to changes in water mass on Earth.

Explanation:

help 4-6 pls!!??!!!!!!!!!!!!!!!

Answers

Answer:

Hopefully this is correct!! Not sure...

Explanation:

4) D

5) A

6) C

D, A, C are the right answers, I think

Suppose a person uses a microscope to look at a cell from the leaf of a tree.

Which structure would they see that would not be found in a cell from a fingernail?

ribosomes

chloroplasts

cilia

mitochondria

do not put a link

Answers

Answer:

chlooplast

Explanation:

because those are the ones that are only in plants and they make photosynthesis

The answer is chloroplast.

What percentage of the earth’s land and what percentage of the earth’s oceans have been disturbed by human activities?

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Answer:

the first 1 :)

Explanation:

What is the typical configuration of chromosomes in eukaryotic cells?

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Eukaryotes typically possess multiple pairs of linear chromosomes, all of which are contained in the cellular nucleus, and these chromosomes have characteristic and changeable forms. During cell division, for example, they become more tightly packed, and their condensed form can be visualized with a light microscope.

(Branliest) Please give me the answer to these

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Answer:

Explanation:

There are over 1300 imperilled species in the United States. 33.4% has been caused by introduced species or more so invasive species

The invasive or introduced species in the United States has seen an economic impact since the damage can be seen in both animals and plants. Now with an invasive species brought about, the naturally occurring species are left fighting for a spot in the habitat and lose in most cases. So economically, the United States has to spend money to get rid of the invasive species

Some of the invasive species have been known to live all year long, and so during the winter seasons, they act as food sources to birds and other animals.

which enzyme can repair breaks to the phosphate-sugar backbone of dna?

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Answer:

Helicase unwinds the DNA and creates the replication fork for other enzymes to bind.

Explanation:

I hope this helps :)

How are thorns and spines related to drought resistance?

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Answer:

To survive in drought conditions, plants need to decrease transpiration to limit their water loss. Some plants that live in dry conditions have evolved to have smaller leaves and therefore fewer stomata. Extreme examples are plants with leaves that resemble spiky thorns or spines.

Use the
Color-Enhanced TEM Magnification: 15,000 x
6. The photomicrograph shows which kind of cell?
A. prokaryotic cell C. animal cell
B. eukaryotic cell D. plant cell

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A. Prokaryotic Cell.

..............

1. Single-celled organisms
are also called
a. multicellular
b. bacteria
c. unicellular
d. viruses

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Answer:

Explanation:

A unicellular organism, also known as a single-celled organism

Prolactin (PRL) is a pituitary hormone that regulates milk production in lactating mammals.

a. True
b. False

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Answer:

true

Explanation:

how is carbon transferred from the biosphere to the hydrosphere?

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Answer:

Animal and plant respiration place carbon into the atmosphere. When you exhale, you are placing carbon dioxide into the atmosphere. Plants use carbon dioxide from the atmosphere to make the building blocks of food during photosynthesis. Carbon is found in the hydrosphere dissolved in ocean water and lakes.

Explanation:

Hope this helps.

2- El electron ocupa el nivel
de menor energia que se
encuentran libre falsa o verdadera

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verdad

porque si estos tuvieran carga positiva ya no serían electrones

When does osteogenesis begin?

Answers

Answer:

a. When a fetus is 13-15 weeks old

Explanation: is correct

the words ""antigen"" and ""virus"" are interchangeable.

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Answer:

False

Explanation:

A virus (which is a pathogen) has a lot of antigens on its surface, so they can't be used interchangeably.

which type of archaean is likely to be found in the intestines of animals?

Answers

Answer:

foot

Explanation:

What does a plant need to create a glucose molecule in photosynthesis?

Choose all correct answers.

carbon dioxide

sunlight

water

oxygen

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Answer:

carbon dioxide, water, sunlight

A. B. And C. plants don’t need oxygen to survive

Sugar and yeast inflate a balloon
because what is produced

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Answer:

As the yeast feeds on the sugar, it produces carbon dioxide. With no place to go but up, this gas slowly fills the balloon. A very similar process happens as bread rises. Carbon dioxide from yeast fills thousands of balloonlike bubbles in the dough.

Explanation:

Carbon Dioxide. It produces Carbon Dioxide

What would happen if cells never changed?

Options:

1. All cells would become blood cells.

2. Meristem cells would form.

3. All cells would be exactly the same.

4. Cell differentiation occurs.

Answers

Answer: 2. Meristem cells would form.

Explanation:

Permanent cells are cells that are incapable of regeneration. These cells are considered to be terminally differentiated and non-proliferative in postnatal life. This includes neurons, heart cells, skeletal muscle cells and red blood cells.

Other Questions

Isaiah wants to build a new shopping complex. He is afraid that once news gets out about his plans, the price of the land where he wants to build the shopping complex will increase in price. Isaiah, therefore, hires Landon to purchase the parcels of land for him and to keep the fact that Landon is working for Isaiah a secret. Landon enters into a written contract for the sale of the land with Miriam and does not tell Miriam that Landon is an agent for anyone else on the deal. Isaiah refuses to buy the property from Miriam. Is Landon obligated to perform the contract with Miriam?a. No, he is not because the purchase of the land benefits only the principal, Isaiah.b. Yes, he is because agents are always liable for performance on contracts they enter into on behalf of their principal.c. No, he is not because Landon is not the principal.d. Yes, he is because there was an undisclosed principal who failed to perform. Kate, Alexia, and Trina just completed the 400-meter dash at the track meet. Kate finished the race 6 seconds faster than Alexia, while Trina finished the race 3 seconds faster than Kate. If their combined time was 2 minutes and 39 seconds, find each girls individual time. what equation is equal to 2x+3y=12 Barry pays $200 per month for his insurance coverage, whether he uses it or not. This payment is called a ______. A color printer prints 5 pages in 9 minutes.How many minutes does it take per page?PLS HELPPPPPP Read the passage.How did this passage influence the ProtestantReformation?86. 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