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3 years ago

PUT THIS INTO UR OWN WORDS

Biology

2 answers:

In-s [12.5K]3 years ago

5 0

Answer:

Explanation

umm

frosja888 [35]3 years ago

3 0

Unless a force pushes or pulls an object at rest (like the egg on the tube), it should stay that way (your hand striking the pie pan). The egg was then dragged straight down into the glass by another force, gravity.

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Which statement about positive feedback regulation is accurate?

GenaCL600 [577]

Answer:

Answer is B. Positive feedback regulation can generate an abrupt, all-or-none response in which the cell moves from ignoring a signal to responding to it very strongly.

Explanation:

Positive feedback can be described as an example of feedback, which is a natural mechanism that amplifies the action of a system.

It can be better be explained further, as a situation whereby the blood pressure decreases and the response of the body also makes or causes the blood pressure to decrease the more.

Other examples of a positive feedback also include blood clotting, ripening of fruits , uterus muscle contraction, resulting to the stretching of the uterus during pregnancy.

6 0

2 years ago

In a population of Mendel's garden peas, the frequency of the dominant A (yellow flower) allele is 80%. Let p represent the freq

k0ka [10]

Answer:

C) 64% AA, 32% Aa, 4% aa

Explanation:

The frequency of dominant allele A is = 80% = 0.8

Since the population is in Hardy-Weinberg equilibrium, p+ q = 1

Here, p= frequency of dominant allele

q = frequency of recessive allele

Given, p= 0.8

So, q = 1-p = 1-0.8= 0.2

Frequency of genotype AA = p2 = 0.8 x 0.8 = 0.64 = 64%

Frequency of genotype aa = q2 = 0.2 x 0.2 = 0.04 = 4%

Frequency of genotype Aa = 2pq = 2 x 0.8 x 0.2 = 0.32 = 32%

5 0

3 years ago

What kind of variation is exhibited by human bloods?

kotykmax [81]

<span>Blood provides an ideal opportunity for the study of human variation without cultural prejudice. It can be easily classified for many different genetically inherited blood typing systems. Also significant is the fact that we rarely take blood types into consideration in selecting mates. In addition, few people know their own type today and no one did prior to 1900. As a result, differences in blood type frequencies around the world are most likely due to other factors than social discrimination. Contemporary Japan is somewhat of an exception since there are popular Japanese stereotypes about people with different blood types. This could affect choice in marriage partners for some Japanese. </span>All human populations share the same 29 known blood systems, although they differ in the frequencies of specific types. Given the evolutionary closeness of apes and monkeys to our species, it is not surprising that some of them share a number of blood typing systems with us as well. When we donate blood or have surgery, a small sample is usually taken in advance for at least ABO and Rh systems typing. If you are O+, the O is your ABO type and the + is your Rh type. It is possible to be A, B, AB, or O as well as Rh+ or Rh- You inherited your blood types from your parents and the environment in which you live cannot change them. I took it from a website: http://anthro.palomar.edu/vary/vary_3.htm

4 0

2 years ago

Why do some fossils of some extinct organisms have been found while others have not?

nexus9112 [7]

Because some decompose and are gone forever.

8 0

3 years ago

These periodic changes on Earth are a result of the five major history that have occurred throughout Earth's

shepuryov [24]

Changes sea level by 100 meters

Exposure of continental shelf

Changes in continental shelf composition

Mass extinctions of species in certain areas

Changes in the water cycle

Changes in landscape

Changes in topsoil characteristics

Answer:

A. Ice Ages

Explanation:

These periodic changes on Earth are a result of the five major ICE AGES that have occurred throughout Earth's history

The five major Ice Ages that throughout the Earth's history we're the following:

1. the Huronian: this occurred around 2.4 billion years ago

2. Cryogenian: this followed Huronian age, and it occurred around the period of 850 million years

3. Agondean-Saharan: this major ice age occur around 460 million years ago.

4. Karoo this is a period of about 360 million years

5. Quaternary is the present age, and it has been in existence since about 2.6 million years ago till the moment

Hence, in this case, the correct answer is Ice Ages

8 0

2 years ago