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Morgarella [4.7K]
3 years ago
9

Which is the term for a drug that increases the activity of the nervous system?

Biology
2 answers:
svp [43]3 years ago
6 0
Psychic stimulants include caffeine, cocaine, and various amphetamines. These drugs are used to enhance mental alertness and reduce drowsiness and fatigue.
natali 33 [55]3 years ago
3 0

Answer:

Stimulant

Explanation:

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Which of the following events is typical of meiosis but not of mitosis?
marin [14]

Answer:

D. the homologous chromosomes are paired AND the spindle is formed

Explanation:

Meiosis is the type of cell division that results in four daughter cells with each having a reduced number of chromosomes (by half). Both meiosis and mitosis occur in different stages including prophase, metaphase, anaphase etc but meiosis occurs in two series of division processes called meiosis I and meiosis II.

In prophase I of meiosis, homologous chromosomes, which are similar but non-identical chromosomes from male and female parents pair to form tetrad or bivalent. This pairing of homologous chromosome is unique and peculiar to MEIOSIS but never mitosis.

8 0
2 years ago
Which would be more likely to carry out endocytosis: a white blood cell engulfing foreign materials or a cell that excretes horm
Irina-Kira [14]

A white blood cell engulfing foreign materials is more likely to carry out Endocytosis.

Explanation:

  • Endocytosis is the process by which a cell takes up a macromolecule into is cytoplasm by forming a vessicle.
  • In the question two cases are given, both the cases involve the formation of membrane bound  vessicle but in different ways.
  • The excretion of hormones involves the movement of molecule outside the cytoplasm. This process is exocytosis.
  • The engulfment of an antigen by WBC involves taking up of molecule within the cell so that it can be killed and digested. Thus in  this case  Endocytosis is more likely to occur..
4 0
3 years ago
State any two effects gravitational force​
rewona [7]

Any two effects of gravitational force are as follows:

1. The Earth's gravitational force accelerates objects when they fall.

2. It constantly pulls, and the objects constantly speed up.

6 0
2 years ago
A hos was commonly made from shark's teeth and whale bones. <br> a. True <br> b. False
nataly862011 [7]
False
their legs were made form the spine of stingrays and they were used to ward of bad storms.
4 0
3 years ago
Read 2 more answers
15. DNA that is derived from the DNA of two or more different species is called —
Wewaii [24]

Answer:

A

Explanation:

recombinant DNA ,the DNA derived from more than 2 or more DNA

6 0
3 years ago
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