BIOLOGY HIGH SCHOOL

Which is the source of energy for earths living things?

Answers

Answer 1
Answer: the sun is the source of energy for earths living things

Related Questions

Specialized cells are formed when cells differentiate.a. Trueb. False?
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In a population of snails, it is determined that snails with very light colored shells blend in well with the sand of their habitat, and snails with dark colored shells blend in well with the rocks in their environment. Over time, which of the following graphs best represent the type of natural selection taking place in this snail population?
Where in eukaryotic cells does protein synthesis take place

The basic structural unit of the body is the: heart brain cell tissue

Answers

Cells are considered the basic structural units of the body.
Cells are what make up the tissues that compose organs such as the heart and the brain. 

Answer:

The correct answer would be cell.

Cell is the basic structural and functional unit of life or body. For example, nerve cell is the functional and structural unit of nervous system, nephron forms the structural and functional unit of excretory system et cetera.

When many similar cells work together to attain the same function, they form a tissue.

Similarly, similar tissues work in synchronization to form an organ which forms an organ system.

Ultimately, the organ systems form an organism.

Birds migrate great distances each year and the primary cue for migration are changes in day length. These changes in day length in turn trigger ___________ changes in the birds. Behavior and body changes follow as the birds prepare for their seasonal migrations.A) genetic
B) hormonal
C) physical
D) reproductive

Answers

I would say B) hormonal. 

When exposed to bright sunlight, some people involuntarily sneeze. This reaction is known as a photic response. It is controlled by a single gene with two alleles, H and h. A man and a woman who sneeze when exposed to bright sunlight are both heterozygous for the photic response trait. Draw a Punnett Square using the allele symbols H and h to show the expected genotypes of the man and woman’s biological children. Identify all possible phenotypes of the offspring and their expected percentages.

Answers

The correct answer is explained below:

Explanation:

  • According to the question,
  • The dominant allele for the photic response gene is: H
  • The recessive allele for the photic response gene is: h.
  • It is said that both the man and the woman are heterozygous for the photic response trait, that is, both of them have the Hh genotype.
  • Both sneeze when exposed to bright sunlight, hence both of them show the photic response phenotype.
  • This means the photic response trait is a dominant trait.
  • Gametes produced by both the man and woman are: H and h.
  • Mating the man with the woman, we get offspring with the following genotypes and phenotypes.

                                               H                     h

                              H             HH                  Hh

     Photic Response         Positive          Positive

                               h             Hh                   hh

     Photic Response         Positive          Negative

  • From the above Punnett square we get,
  • Percentage of offspring expected to show photic response trait = (3)/(4) = 75 %.
  • Percentage of offspring expected to not show any photic response trait = (1)/(4) = 25 %.

The clownfish is a species of fish that lives between the stinging tentacles of sea anemones. The clownfish protects the anemone from anemone eating fish, while the anemone’s tentacles protect the clownfish from predators. The relationship between clownfish and anemone is an example of

Answers

Answer:

mutualism

Explanation:

Mutualism is a type of symbiotic relationship between two organisms in which both benefit and neither is affected negatively in any way.

Mutualism can be in the form of resource-resource when it involves an exchange of resources between the organisms, service-resource when a resource is being swapped for a service or, service to service when it involves exchange of services between the two organisms.

In this case, the clownfish offers protection service to the sea anemone while the sea anemone in turn also offers protection to the clownfish. This is a service-service mutualism.
Mutualism, both of the animals benefit from the relationship. 

Under a light microscope, a stained cell shows chromosomes lined up along the middle. What will happen next? Spindles will form and centrioles will move to opposite poles. A nuclear membrane will form around each set of chromosomes. Chromosomes will separate and move to opposite poles.

Answers

Chromosomes will separate and move to opposite poles.

A light microscope uses focused light and lenses to magnify an object. Light microscopes come in several forms. (1) Simple light microscopes use a single lens to magnify an object and cannot reach high magnification just like a handheld lens whose highest clear magnification in the best conditions is 25x. (2) Compound light microscopes use two sets of lenses - an objective lens and an eye piece. This is the type of light microscope whose magnification power reaches between 1000x and 2000x.

Why must cells reproduce?

HELP PLZZ :((

Answers

Answer: Cell division is key to life: from the moment we are first conceived, we are continually changing and growing. In order for our bodies to grow and develop, they must produce new cells—and allow for the death of old cells. Cell division is also an essential component of injury repair.

Explanation: have a good day

Cells must reproduce to provide protection for your body.

Hope this helps; have a great day!
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You are studying a mysterious organism. The organism has tentacles and is attached to the sea floor. It survives by stinging food and Tatching plankton with its tentacles. What type of invertebrate is this? annelid or arthropod or echinoderm cnidarian or poriferanPLEASE HELP MEEEEEE​
The passage of a bolus of food down the esophagus is assisted by what? MULTIPLE CHOICE.A. Enzymes and acidsB. The lower esophageal sphincterC. PeristalsisD. The pyloric sphincter
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