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Sunny_sXe [5.5K]
3 years ago
15

Observe and measure prepared sea urchin embryos and chick embryos.Conduct an experiment using chick embryos. Determine the effec

t of a stimulant and depressant on a chick embryo's heart rate.
Biology
1 answer:
Igoryamba3 years ago
7 0

Answer:

Increase with a stimulant and decrease with a depressant

Explanation:

Stimulants and depressants are observed using various organisms. The way a stimulant works is by increasing the dopamine levels in the body. This in turn causes increased heart rate as would be seen in the chick embryo heart. On the other hand a depressant would lower dopamine levels. This would reduce the neurotransmitter and cause the heart rate to slow down.

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3 0
3 years ago
Mold is made up of many fungi cells. Mold would be considered what type of organism?.
sweet-ann [11.9K]

Mold is considered a multicellular organism, made up of many fungi cells. Thus the correct answer is option (C) Multicellular Organism.

Multicellular organisms are made up of many cells thus it is different from unicellular organisms.

Some organisms, such as slime molds and social amoebae of the genus Dictyostelium, have both uni- and multicellular structures. These include every type of animal, as well as most fungi, terrestrial plants, and algae.

Colonies of identical individuals that come together to form organisms are called colonies. However, it can be difficult to distinguish between "colonial protists" and "real multicellular organisms" because the terms are interchangeable (colonial protists are occasionally referred to as "pluricellular").

A fungus with many cells is called mold. It is made up of hyphal filaments, which can group together to form mycelia. A mycelium is a collection of mycelia, and these structures make up the thallus, or body, of the mold.

The complete question is:

Mold is made up of many fungi cells. Mold would be considered what type of organism?

A. unicellular

B. prokaryotic

C. multicellular

To learn more about mold please click on the given link: brainly.com/question/3851425

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6 0
1 year ago
How much water was retained by soil C​
Talja [164]

Answer:

we dont know sorry but i dont know

8 0
3 years ago
What are the functions of the male reproductive system
Aloiza [94]
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6 0
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When human DNA molecules and chimpanzee DNA molecules are heated to separate the two sides of the molecules from each other and
Sloan [31]

Answer:

B. Humans and chimpanzees share a relatively recent common ancestor.

Explanation:

Both the humans and Chimpanzees are the primates that are they belong to the same group called hominids and genus called Homo.

When the DNA sequences of the Chimpanzees and the Humans are sequenced and compared than they showed that 98% of the genome is similar.

In the given question, the single strands of the humans and the chimpanzees base-paired which showed that 98% of the nucleotide sequence is the same. The most possible reason for this similarity is that they both were evolved from the common ancestors and they diverged recently in the past.

Thus, Option-B is correct.

5 0
3 years ago
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