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aleksandrvk [35]
3 years ago
5

Help pleaseeeeeeeeeeeee ​

Biology
1 answer:
gavmur [86]3 years ago
5 0

Answer:

um what they said is correct

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This desert has not received rain for weeks. Now that a storm has arrived in the area, how will the environmental change most li
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Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?
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B, ligand-gated ion coupled receptor signaling
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Briefly explain how an antibiotic-resistance gene and the lacz gene can be used to determine which cells contain a particular pl
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Bacteria that have taken up the plasmid with antibiotic resistance gene will grow in a medium laced with the particular antibiotic of interest. More so, the bacteria that take up plasmid with the lac Z gene, when grown in a medium of lactose only, will propagate. These experiments are used with selective media that only allows the bacteria with a particular characteristic to grow.   





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3 years ago
A hypothetical organ has the following functional requirements: (1) the ability to resist surface abrasion and mechanical stress
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Answer:

The <u>five</u> tissues needed that could make up this hypothetical organ are stratified squamous epithelial tissue, smooth muscle tissue, dense irregular connective tissue, loose connective tissue, and nervous tissue.

Explanation:

<h3 /><h3>Ability to resist surface abrasion and mechanical stresses</h3>

Stratified squamous epithelial tissue

This consists of <em>scale-like cells</em> stacked together in layers that provide a  <u>barrier that is resistant to abrasions and wear-and-tear</u>. This is also the most common type of stratified epithelium in the body. The top layer of this tissue has two types: <u>keratinized</u>, lined with dead cells with keratin, and <u>non-keratinized</u>, also with dead cells but without the keratin. In the human body, the skin is composed of stratified squamous epithelium.

<h3>Ability to contract involuntarily when stimulated by cells of the nervous system</h3>

Smooth muscle tissue

Smooth muscle, known for its <em>non-striated appearance,</em> is a kind of <u>involuntary</u> muscle cells that are <u>stimulated by neural signals by the autonomic nervous system, hormones, and local factors</u> such as a wall stretch of a certain organ, inflammation of visceral/parietal organs, etc. In the human body, this is mostly found in the <u>walls of blood vessels and organ systems.</u>

<u />

<h3>Ability to resist tension in many different planes of force</h3>

Dense irregular connective tissue

This is a kind of connective tissue made up of <u>collagen fibers arranged randomly.</u> This creates <u>greater strength and support in all directions</u>. It can also <u>return to its original shape</u> even after stretching.

<h3>One tissue to "glue" all other tissues together</h3>

Loose connective tissue

Also known as areolar tissue, it is loosely made up of collagen, elastin, and reticular fibers, and lots of ground substance. It is arranged in a web-like fashion and serves as the "cement" which fills in spaces between tissues.

<h3>One tissue to stimulate the contracting cells</h3>

Nerve tissue

It is a specialized kind of tissue responsible for communication within the body. It transmits and receives signal impulses throughout the body. The 2 types of nervous tissues are neurons and neuroglia.

5 0
4 years ago
The MOST accurate way to determine the evolutionary relationship between two animals is through the examination of
baherus [9]

Answer;

DNA or protein sequences of shared genes


The MOST accurate way to determine the evolutionary relationship between two animals is through the examination of DNA or protein sequences of shared genes.


Explanation;

DNA or protein sequences of shared genes. Biochemical evidence is extremely accurate in determining the relationship between two organisms. Many animals have been re-classified, due to DNA evidence.


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