BIOLOGY HIGH SCHOOL

Animals begin life as a single cell. How do animals end up with so many different cell types as adults? a) Through meiosis b) Through cell differentiation c) Through asexual reproduction d) Through mitosis

Answers

Answer 1
Answer:

Answer:

c is the correct answer

Explanation:

Because they reproduce

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How does summation operate in a post-synaptic cell? A). It adds up all of the previous action potentials and releases one of that value. B). Post-synaptic cells do not fire. C). Input from many cells is required for it to fire. D). Sodium ions are moved from one cell to the next in an additive way.
The five-kingdom system of classification reflects the idea that all organisms can be separated into two main groups: prokaryotes and eukaryotes. The new six-kingdom system recognizes three broader groups that include six kingdoms. How do the three basic groups of the six-kingdom system differ from those of the 5-kingdom system? A) The six-kingdom system has three domains in order to includes a new kingdom for viruses. B) The six-kingdom recognizes the vast differences in protists and divides them into two kingdoms. C) The six-kingdom system has three domains: two domains separate all prokaryotic organisms into two new groups. D) The six-kingdom system adds a broader classification of domain to divide all living things into three groups: microorganisms, plants, and animals.
1. The situation in which alle frequencies in the gene pool of a population remain constant is called (a)evolution (b)genetic drift (c)genetic equilibirium (d)natural selection 2.The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called (a)the Hardy-Weinberg principle (b)the founder effect (c)directional selection (d)stabilizing selection
One of the advantages of nuclear power over traditional fossil fuels is that nuclear power _____.

Which of the following describes a response controlled by the endocrine system?A. Dodging a moving car

B. Release of melatonin to regulate sleep cycle

C. Pulling your hand off a hot stove

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Answer:

B. Release of melatonin to regulate sleep cycle

Explanation:

What benefit do humpbacks receive from protecting other species?

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Answer:

if they ever in trouble the ither animals they helpped with remember whar rmtgey did and help out

Answer:

the humpback whales receive some sort of benefit from interfering with orca hunts.

Explanation:

Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin made during his time aboard the H.M.S. Beagle prompted him to ask which question?

Answers

Answer:

Darwin's observations led him to wonder: How do species originate?

Explanation:

Darwin observed morphological traits and geographic distribution of many species as well as many fossils. From these observations  the question: How do species originate?, arose. Darwin concludes that similar species must originate from a recent common ancestor with similar traits to all their descendants. This is the basis of the theory of evolution.
Whether the similarities that he was seeing bewteen extinct fossils and living animals, as well as the small differences in structure and behaviour seen in finches and tortoises on the Galapagos islands, was due to the process of natural selection. This is where a genetic variation/mutation in an animal proves beneficial to the species in their environment, while the other members of the same species with the mutation die out, as they do not have the same abilities as the mutated individuals.

a semipermeable membrane is placed between the following solutions. which solution will decrease in volume? mastering biology

Answers

Answer:

whichever solution has a lower concentration of the solute in it will lose volume as in osmosis water is attracted to the side with a higher volume of the solute

What is the most abundant gas in Earth's present day atmosphere

Answers

Answer is Nitrogen...............

How you do this and I need help

Answers

Consumers make up the
next trophic level; and must
eat other organisms to obtain
their energy. Consumers, in
turn, occupy different trophic
levels. Trophic levels of
common aquatic organisms
are shown in table 1.
Primary consumers are
herbivores, they eat plants.
In our aquatic ecosystem
example, zooplankton feeding
on phytoplankton occupy the
primary consumer trophic
level. Cattle are primary
consumers in terrestrial
ecosystems.
Secondary consumers,
represented by certain aquatic
insects are carnivores and
feed upon primary consumers,
the zooplankton.
Our example also includes
a tertiary consumer, the
largemouth bass that feeds
upon other carnivores.
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Explain why meiosis cannot happen without mitosis.
Which equation turns food into energy?