Imagine a dog steps on a pin and pulls its foot away. Look at the reflex arc of this scenario below.
Which of the following statements best describes the image?
O The brown circle A shows neurotransmitters being released, and the blue circle B shows neurotransmitters being
absorbed.
The brown circle A is an effector, and the blue circle B is a receptor.
The brown circle A is a receptor, and the blue circle B is an effector.
The brown circle A shows neurotransmitters being absorbed, and the blue circle B shows neurotransmitters being
released.

Answer:

The brown circle A is a receptor, and the blue circle B is an effector.

Explanation:

The brown circle indicates a receptor whereas the blue circle is an effector because brown circle have sensory cells which receives the sensation due to pins into the foot and this information is taken to the central nervous system through sensory neurons while on the other hand, blue circle is an effector to which instructions comes from the central nervous system through motor neurons and as a result the dog pulls away its foot from the region where pin is placed.

Answer:

C. The brown circle A is a receptor, and the blue circle B is an effector.

Explanation:

Correct on Edge 2021!

On the colorful map, in general, where is the youngest crust located?

4. Which task in the a salon is an example of a chemical change?
A. Cutting hair
B. Dying hair a different color
C. Shaving hair
D. Washing a comb in disinfectant
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What is a virus and what cause a viruses​

Which organisms have groups of cells arranged into organs?
O A. Unicellular
O B. Multicellular
O C. Prokaryotic
O D. Bacterial

what are the limitations of cell theory​

Earth's atmosphere and oceans transfer heat through the evaporation and movement of water, producing-
A. Magnetic reversals and living organisms

B. Solar eclipses and lunar storms

C. Earthquake and volcanoes

D. Winds and ocean currents

A man and a woman have 24 children. Of the children, 17 have brown
eyes and 7 of the children have blue eyes. What are the most likely genotypes of the parents?

In which kingdom would you place an organism that reproduces by spores, is made of many cells enclosed by cell walls, have a nucleus, and are heterotrophs?

plant

fungi

bacteria

animal

How do elephants warn their family groups of a dangerous predator in their habitat?

A. They use their trunks to make loud sounds.
B. They stomp their feet to create noise.
C. They use their tusks to kick up dirt.
D. They flap their ears rapidly.

Susan suffered from a heart attack. When the doctors tested the heart muscle they found that she
had an increased ratio of lactic acid to pyruvic acid in her heart tissue. What does this say about
the availability of oxygen in her heart muscle cells?

Which statement best describes the relationship between an allele and a gene?

A.) An allele is a version of a gene that can be expressed as a phenotype.
B.) An allele is the primary protein made by a gene found in a developing embryo.
C.) An allele is the part of a gene that attaches to messenger RNA molecules.
D.) An allele is a segment of a DNA molecule that controls replication of a gene.

An Autotroph get energy from the sun, not from food.
Tue
False

What happens to the rate at which the reaction happens when the substrate levels increase?

When light passes into a more dense material, it bends away from the normal

True or false

Answer : Flase

1. Given the following DNA sequence, determine the correct order of amino acids.

GGCATGAGGTAA

2. For this mutated sequence:

• Determine the correct order of amino acids,

• How the two strings of amino acids will differ.

• also circle the mutation

GGAATGAGGTAA

Which of these is the change.

No Change-
1 Amino acid changed-
Premature stop signal -
No stop signal-
1 amino acid added/deleted -
All the amino acids changed after the point of mutation-

Paleoclimatic analysis has generated a claim that there is a possible correlation between an extinction event around 29 million years ago that allowed grasslands to become abundant and the adaptive radiation of several groups of butterflies.

Which of the following proposes the best alternative hypothesis for the claim?

A- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, but there is no significant difference between speciation rate, as well as species richness with regard to butterflies, before and after 29 million years ago.

B- Climate analysis conducted by sampling pollen preserved in amber shows an increase in grass pollen 29 million years ago, which indicates there was an increase in grasslands that correlates to an increase in butterfly speciation during the same time period.

C- There is a correlation between the rapid and wide-ranging decrease in species richness of insects in general 29 million years ago and the increase in species richness and diversity among the butterfly population during the same time period.

D- Evidence of rapid speciation among butterfly species 29 million years ago is evenly distributed among all environments of that period.

What is parturtion and lactation???​

Which one of the following is the largest source of greenhouse gases in the atmosphere? A. the burning of fossil fuels B. chemicals released during manufacturing C. the release of carbon dioxide from cellular respiration D. Deforestation​

how to cultivate yam​

What do scientists mean when they refer to a
population?
A. all the organisms in an ecosystem
B. all the species that share similar
anatomical features
C. all the animals that acquire resources
through similar methods
D. all the interbreeding members of a certain
species in an ecosystem

Why where the Galapagos Turtles different from the mainland turtles if they shared a common ancestor?​

What does it mean to be impartial?
O A. To be unbiased
OB. To be strong
O c. To be useful
D. To be smart

the core technique of modern biotechnology is/are
1)chemical engineering
2)genetic engineering
3)both
4)none​

The first phase of Mitosis is _________ . In this phase the DNA condenses down into ________, and the duplicated separate. The second phase of Mitosis is_______ . In this phase the sister chromatids line up on the _______ plate through a push and pull motion as they connect to the microtubule spindle fibers emanating from the ________. The third phase of Mitosis is________ . In this phase the________ (sister chromatids or homologous chromosomes) are pulled apart. The fourth phase of Mitosis is_______ . In this phase the nuclear ________starts to reform and the DNA de-condenses.

After studying prokaryotic and eukaryotic cells, what do scientists believe?

What is one of the causes of daily variations in temperature on a planet's surface?
OA.
the speed of a planet's rotation
OB.
the rotation of a planet's moons
O C.
the time it takes for a revolution around the sun
OD.
the tidal force on the oceans

Question:
Soil is sometimes called a bridge between life and the non-living world. Explain what that means.
es )

Starting with spore dispersal, and identify adaptations in the life cycle of the bryophyte for living in a terrestrial environment (ie, in air, without water surrounding the plant body). What are new stresses associated with living on land, and what morphological or physiological features did the first land plants have to evolve to cope with these stresses

Why is it important for nitrogen to be more abundant in our atmosphere than oxygen?

A. Oxygen is only breathable if diluted with nitrogen.

B. Nitrogen and oxygen combine to produce weather that is essential for life.

C. Oxygen must be diluted because it is a highly combustible gas.

D. Nitrogen is a heavy molecule that pulls oxygen, a light molecule, to the surface for oxygen-dependent life to use.

Predict: How do you think a period of hot summers will affect the rabbit population?