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asambeis [7]
2 years ago
6

When using a dichotomous key to identify organisms, what do we look at?.

Biology
1 answer:
satela [25.4K]2 years ago
8 0

Answer:

Its based the organism's observable traits

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cancerous growths are clonal in origin because cancer cells . multiple choice question. can invade healthy tissues originate fro
rodikova [14]

Cancerous growths are clonal in origin because of cancer cells originate from a single cell that has accumulated genetic changes during cell division.

The human body contains several billion cells. Cells are the teeny, tiny building blocks of our tissues and organs. Every one of us was once a single cell. That cell divided into two new cells after internal replication.

Cells become abnormal when the DNA, which holds the instructions needed for cells to operate, is damaged. The cells they make after that will not be similar to healthy ones. Along with having a variety of appearances, they might also possess different traits. The medical word for this kind of abnormal cell proliferation in body tissue, including skin, is dysplasia. As long as there aren't many abnormal cells and our immune system controls them, we won't get sick from them.

Sometimes these cells can vanish on their own. Only when these cells continue to change and start to divide erratically, leading to lumps or growths, does one of the more than 200 diseases recognized as cancer become apparent. These kinds of growths are tumors.

The complete question is:

Cancerous growths are clonal in origin because of cancer cells __________.

multiple choice questions.

(A). can invade healthy tissues originating from a single cell that has accumulated genetic changes during cell division

(B) can migrate to other areas of the body and form secondary tumors at the new sites

(C) can form a tumor that is localized only at one site

To learn more about cancer please click on the given link: brainly.com/question/14336972

#SPJ4

3 0
1 year ago
Humans compared to Orangutans is an example of what kind of evolution?
lorasvet [3.4K]

Answer:

I think in my opinion it's the Congruent Evolution

4 0
3 years ago
Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different pa
statuscvo [17]

The answer is D.

Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It tells the brain and the rest of the body about the time of wake and sleep. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. The melatonin secretion into the blood is regulated by the endocrine system, by the hypothalamus which on gets stimulated by the light.

8 0
3 years ago
Read 2 more answers
Indicate the pathway of urine formation to urine output by placing each of the structures in the correct sequential order from l
GalinKa [24]

Answer:

Nephron-- Collecting Tubule-Collecting Duct- Papillary duct- minor Calyx- Major Calyx- Renal Pelvis- Ureters- Bladder- Urethra

Explanation:

Nephron is a basic unit of kidney,in which urine is formed through the process of filtration (it occurs in glomerulus of the nephron). Nephrons are connected with the collecting duct system of the kidney  to a minor calyx. The collecting duct system consists of  connecting tubule, medullary collecting duct  and papillary duct. The whole  collecting duct system has a role in reabsorption and excretion.

Papillary ducts open at minor calyx, later in major calyx. Calyces open in pelvis , which is located inside hilum of kidney. Ureters  travel out of kidney through hilum and pour urine into the urinary bladder. Urethra is a tube with the role to tranport the urine from the bladder when the bladder is full.  

6 0
3 years ago
A ???? has definite shape and volume.<br><br> -plasma<br> -solid<br> -liquid<br> -gas
Sonja [21]

Answer: Solid

Explanation: The rest of the options don't have a definite shape nor volume.  

7 0
3 years ago
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