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Arte-miy333 [17]
3 years ago
6

How can we best characterize the physical differences between humans and apes?

Biology
1 answer:
harina [27]3 years ago
4 0
The physical differences between humans and apes are: human have <span> relatively short and weak arms compared to their legs.  Human's toes become shorter, so human's feet do not have the ability to effectively grasp and manipulate objects. </span><span> Human feet are longer than the feet of apes, in order to better support the body. </span>
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Single-celled or unicellular fungi are: molds monolyathids protoplasm yeasts
Tju [1.3M]
The answer is yeasts.

Fungi is the kingdom of Eukaryota domain and includes unicellular organisms and multicellular organisms. Y<span>easts are u</span>nicellular fungi. But, some species have an ability to develop some kind of multicellular characteristics such as pseudohyphae that forms by connecting budding cells.
8 0
3 years ago
Read 2 more answers
Leigh's disease is a mitochondrially inherited disease with symptoms that include seizures, fatigue, impaired reflexes, breathin
Ahat [919]

About the question:

You will find the pedigree in the attached files

Answer:

  • individual 4 → Affected woman → Black circle
  • individual 5 → Affected woman or man → Black circle or square
  • individual 7 → Healthy woman → Empty circle
  • individual 10 → Affected boy → Black Square

Explanation:      

Mitochondrial inheritance is the transmission of a disease or a trait from the maternal line.

<em>Most of the DNI is in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly transfer mitochondrial genes to the progeny</em>, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this mitochondrial DNI, the whole progeny of the mutated woman will be affected, as they will get the mother genotype carrying the mutation. On the contrary, if an affected man is carrying a mutation in mitochondrial DNI, non of their descendants will get the disease.

Before answering the question, let us remember the pedigree symbols.

  • Squares represent Males/Men
  • Circles represent Females/Women
  • Empty symbols represent healthy/non-affected individuals
  • Solid black symbols represent sick/affected individuals

In the exposed pedigree, we can see that the mother is affected by the disease (individual number 2), so all her children are also affected (individuals 4, 5, and 6) because the <em>disease is mitochondrially inherited</em>.

Individual 3 is a healthy man, so individual 4 must be an affected woman (Black circle). As she is the one affected, then all her children will also be affected. This couple <em>had one boy and two girls</em>. Individuals 8 and 9 are girls (circle), so individual 10 must be the affected boy (black square).  

On the other hand, individual 6 is an affected man (black square), son of individuals 1 and 2. This man couples with a woman, and they have all healthy children. So this woman (individual 7) must be healthy. Even though the man is affected, all their children are not because their mother (7) is not. Remember that sperm cells do not transmit the mitochondrial genes to the progeny.      

And finally, individual number 5 might be either a man or a woman. In any case, this person is also affected by Leigh's disease.  

5 0
3 years ago
The type of reproduction that is most often used by multicellular organisms is.
Nezavi [6.7K]

Meiosis is involved in the formation of the gametes of multicellular organisms.

<h3>How do multicellular organisms reproduce?</h3>

Both plants and animals reproduce by developing new individuals, through gametes or reproductive cells.

<h3>Characteristics of multicellular organisms reproduction</h3>

  • Many multicellular organisms always arise from a single cell called a zygote, the result of the union of two gametes (female and male).

  • The zygote subdivides rapidly throughout gestation, forming the entire body of the creature that, from its birth, begins to grow.

Therefore, multicellular organisms reproduce by means of certain types of reproductive cells that are generated and take care of building a complete new individual.

Learn more about multicellular organisms reproduction here: brainly.com/question/220315

5 0
2 years ago
The selective serotonin uptake inhibitors, like the antidepressants Prozac, Zoloft, or Paxil, result in increased levels of sero
never [62]

Answer:

increase anxiety; decreased vulnerability to overreact to stress

Explanation:

Serotonin (5-HT) is a natural neurotransmitter that carries signals between nerve cells (neurons) throughout the body. This neurotransmitter (serotonin) is responsible for regulating many biological functions (e.g., mood, digestion, sleep, etc). Moreover, it has been shown that there is an association between low cerebrospinal fluid 5-hydroxyindole-acetic acid (5-HIAA, the principal serotonin metabolite in the brain) levels and the risk of developing depression or destructive behaviors. In addition, serotonin concentration can also be elevated in situations of anxiety and/or stress. Antidepressants such as Prozac, Zoloft and Paxil act as serotonin uptake inhibitors that increase serotonin concentration at the synaptic site. Like other drugs, these antidepressants may lead to increase anxiety and decrease the vulnerability to react to stress by downregulating sensitivity to serotonin released during natural stress situations.

3 0
2 years ago
Match the organelle with its function. A. Instructions for protein synthesis and cell reproduction; contains genetic information
Jet001 [13]

Explanation :

A. Instructions for protein synthesis and cell reproduction; contains genetic information - <u>Nucleus </u>

B. Intracellular compartment forms transport vesicles; participates in lipid synthesis and synthesis of membrane or secreted proteins - <u>Endoplasmic reticulum</u>

C. Packages proteins for export from cell; forms secretory vesicle -<u> Golgi apparatus.</u>

D. Digest worn-out organelles and cell debris; digest material taken up by endocytosis -<u> lysosomes</u>

E. ""Power plants"" of the cell; sites of oxidative metabolism - <u>Mitochondria</u>

F. Sites of photosynthesis<u> - chloroplasts</u>

G. Regulates water levels in plant cells <u>- vacuole</u>

H. Used in break down of fats and contains the enzyme catalase - <u>peroxisome</u>

4 0
3 years ago
Read 2 more answers
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