All categories

3 years ago

Which of the following brain structures is involved in the process of reward and pleasure

1 answer:

7 0

Researchers have found that main centers of the brain's reward circuit are located along the MFB. the VTA and the nucleus accumbens are the two major centers in this circuit.

You might be interested in

Which layers are impermeable ?

klemol [59]

Answer:

A portion of an aquifer that contains rock material that does not allow water to penetrate; often forms the base of unconfined aquifers and the boundaries for confined aquifers.

4 0

3 years ago

g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 minutes, how many bacteria will the colony con

Lynna [10]

Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

If we divide the 960 minutes (16 hours) by 20 minutes we obtain 48. (960/48)

There are 48 twenty minutes intervals in 16 hours.

Now we have to apply the exponential growth formula:

P (t) = Po (1 +r) ∧t

Where:

P (t) = population at time t

P (0) = initial population (1)

r = growth rate (1)

t = time (48)

Replacing with the values given:

P (t) = 1 (1 + 1) ∧48= 2.81 x 10∧14

2.81 x 10∧14 baterias after 16 hours.

7 0

3 years ago

The cell membrane engulfs substances into the cell and transports these substances throughout the cellsmall packages called

kolezko [41]

Answer:

in phagocytosis, the cell membrane surrounds the particle and engulfs it. ( credit: Mariana Ruiz Villareal) Phagocytosis (the condition of “cell eating”) is the process by which large particles, such as cells or relatively large particles, are taken in by a cell.

Explanation:

6 0

3 years ago

Please answer 5&6. Thank you.

erastovalidia [21]

Answer:

5. The correct answer would be an option A. ova

Note: I assume that all the samples are of human origin.

DNA (deoxyribonucleic acid) content of somatic cells of humans consists of 46 chromosomes or 23 pairs of chromosomes. Gametes (sperm or ova) are haploid cells produced by the process of meiosis and contain half the number of chromosomes found in parent cell. Hence, they contain 23 chromosomes.

6. The correct answer would be an option J.

Sperm formation or spermatogenesis is the process by which spermatozoa (haploid gamete) is produced from germ cell with the help of meiotic division.

Meiosis results in the formation of four haploid (n) cells from single diploid (2n) parent cell. Here, 2n is given as 8 so, n would be equal to 4.

Meiosis I results in the formation of two secondary spermatocyte cells (both haploid or 4 chromosomes in this case) from single primary spermatocyte (diploid or 8 chromosome in this case).

Both the secondary spermatocytes undergo meiosis II to produce 4 spermatids (each haploid or 4 chromosome in this case). Spermatids differentiate and mature into spermatozoa.

3 0

3 years ago

Where does most ocean pollution come from

AlekseyPX

Answer:

most ocean pollution comes from plastic waste and garbage flood

6 0

3 years ago

Read 2 more answers