Describe how our bones move

Answers

Answer 1

Answer: So. Take your arm for instance.
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Everything... everything, even how you think of the Question of the Ultimate Purpose of Life, begins with the brain. The brain sends a signal through the body through nerves (NERVOUS SYSTEM) whose signal is connected to the muscle (MUSCULAR SYSTEM). Then, since the muscle is attached to the bone, (SKELETON), the muscle contracts. The arm then pivots on the elbow joint.

Hope I helped!

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All vertebrates have general sensors in their skin for touch, pressure, and pain. These are called _____. olfactory receptors chemoreceptors photoreceptors mechanoreceptors

Answers

Answer: The correct answer for the blank is -

mechanoreceptors.

Explanation:

Mechanoreceptors can be described as sensory receptors or cells preseng on skin or other organs , which respond to any mechanical stimuli like touch, difference in the pressure, sound etc.

These are the general sensors present in all vertebrates that are designed to sense touch, pressure, and pain.

Answer:

mechanoreceptors

Explanation:

got this right on my assignment

A gardener crosses tall true–breeding pea plants with short true–breeding ones. Tall plants are dominant to short ones. He collects the seeds to grow F1 plants and then allows them to self–pollinate to form an F2 generation. Which of the following describes the traits of the offspring correctly?

Answers

If the parental plants (P-generation) have the genotypes TT (tall) and tt (short), respectively, all the F1 plants will be tall heterozygotes (genotype Tt).

>Those Tt-plants will (statistically) have the following distribution of genotypes and phenotypes among their offspring (the F2 generation): 25% TT (tall homozygotes); 50% Tt (tall heterozygotes) and 25% tt (short homozygotes).

>In other words: 3/4 of the offspring will have the tall phenotype (genotypes TT and Tt); and 1/4 will be short plants (genotype tt). -

>Make a Punnett square to visualize the different crosses...

What do birds have that distinguishes them from other organisms?a. Four-chambered he21
c. Amniotic eggs
b. Wings
d. Feathers

Answers

The answer is d. Feathers.

Feathers are epidermal growths characteristic only for birds and it is the trait that distinguishes them from the other organisms.

The other three characteristics they share with other organisms:
- Four-chambered heart is a characteristic of crocodiles, birds, and mammals.
- Reptiles, birds, and mammals, belong to the group of Amniote, which means their eggs are amniotic. Amniotic eggs are either laid on land or retained inside the mother, unlike anamniotic eggs that are laid in the water.
- Wings are characteristic for birds and some mammals, such as bats. But their wings are analogues which mean they evolved independently.

Which process provides immunity against antigens and pathogens in the body fluids?

Answers

The answer is humoral immunity.

Humoral immunity is immunity found in the body fluids. It is mediated by macromolecules, such as antibodies, complement proteins, and other proteins. Humoral immunity protects extracellular spaces. Antibodies are produced by B-cells and are responsible for a destruction of pathogens present in extracellular spaces. That way, intracellular infection is prevented.

The _______ is a muscle in the bottom of the chest that bends downward to draw air in, and bows upward to force air out of the lungs. A. diaphram B. bronchi C. trachea D. heart

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its the diaphragm. If you ever join a choir of some sort,your director will tell you to use your diaphragm to exhale air out to produce a louder and stronger sound.

What form of RNA carries instructions from the nucleus to the ribosome?

Answers

Messenger RNA are responible for carry the codons needed to the ribosome so that the ribosome can match the codons to specific amino acids and these amino acids can form a polypeptide chain (protein)

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