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What unicellular protists have shells?​

Answers

Answer 1

Answer:

Foraminifera (forams for short) are characterized as unicellular protists that have shells


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You hear rumors about an unusual series of four islands in the Tierra del Fuego archipelago of Chile. On these islands, the typical laws of island biogeography theory are reversed such that species colonization rates are influenced by island size, not isolation, and small islands have higher colonization rates than larger islands. In addition, islands close to the mainland have higher extinction rates than islands far from the mainland. Of the four islands in this archipelago, a _____ island _____ the mainland would have the SECOND LOWEST equilibrium number of species.

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Of the four islands in this archipelago, a SMALL island CLOSE TO the mainland would have the SECOND LOWEST equilibrium number of species. Biogeography studies species distribution.

Biogeography refers to the discipline that examines the range of distribution of species and taxonomic groups in a given geographical area over geological time.

The theory of island biogeography is a scientific theory that posits the idea that larger islands exhibit a greater amount of species (i.e., higher biodiversity) than smaller islands.

According to this theory (island biogeography), each island represents a particular unique ecosystem, which is different from other surrounding ecosystems.

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Laws, theorie
Question 4 of 10
Newton's second law of motion states that the acceleration of an object
depends on the force exerted on it, divided by its mass. This law can be
summarized by the equation F = mx a.
Why is this a law and not a theory?
A. Newton's statement involves mathematics. A theory is a
description based on observations,
OB. Newton's statement describes the relationship between mass,
acceleration, and force. A law is an explanation of natural events.
O C. Newton's statement is supported by research. A theory is only an
educated guess
D. Newton's statement has been proved with scientific evidence. A
theory can change when new evidence is found that does not
support the theory
SUBMIT

Answers

The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.

Answers won't help, but a hint will.

Answer:

Its D

Explanation:

Took the test

who developed a theory of evolution identical to darwin’s?

Answers

Answer:

Alfred Wallace

Explanation:

Out in the distance you see

Answers

F. berry bush

this is ur ans !!

The G. rabbit is the only primary consumer seen.

Trophic Levels in Food Chain

The food chain is made up of three main groups of living beings:

ProducersConsumers and Decomposers.

Each of them represents a trophic level of energy flow transmitted through food. The first trophic level is formed by the producers and the last one is the decomposers.

Primary Consumers

Are all organisms that feed directly on Producers. In this case, they are usually herbivorous or omnivorous animals, as they consume plants.

With this information, we can conclude that in the alternatives, g. rabbit is the only alternative corresponding to a primary consumer.

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Analyses of the protein ______ can be used to study evolutionary relationships among species because most organisms produce this protein for the electron transport chain in mitochondria.

Answers

Evolutionary relationships among species can be studied when similar structures or materials eg the wings of a bat and the arm of a bird or similar proteins between two different species. This proves to show relationship among organisms.

Analyses of the protein Cytochrome C can be used to study this types of evolutionary relationships.

Cytochrome C is an antioxidative enzyme that is a part of the electron transport chain in mitochondria. Mitochondrion is an organelle that majority of living organisms share in common. This protein is therefore found present in almost all organism carrying out cell respiration. Therefore this protein can be used to analyze and study evolutionary relationship among organisms with this protein.

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A process of growth maintence and division

Answers

Answer:

In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. One cell gives rise to two genetically identical daughter cells during the process of mitosis. ...

Explanation:

hope this helps

A farmer planned to plant 120 seeds in all. After planting 10 more seeds each day than was planned.

Answers

Answer:

120+10x=x

Explanation:

120+10 times the number of days equals answer

What is the temperature shown on the thermometer?

Answers

Answer:

22

Explanation:

the thermometer goes by 2

5 spots before it reaches 30. Goes up by two each line

propulsion of a sperm cells occurs due to ___________and It gets energy from____________/_

Answers

Answer:

propulsion of a sperm cells occurs due to the sperm's tail containing a large number of proton channels called Hv1 and It gets energy from the seminal plasma.

Explanation:

identufy the sephers that are inteacting in the following senario a plant carbon dioxide

Answers

Answer:

Increased Production of Photosynthesis

Explanation:

Carbon dioxide make plants more productive because photosynthesis relies on using the sun's energy to synthesise sugar out of carbon dioxide and water so a Carbon interaction with any plant species would alternate in photosynthesis. Plants and ecosystems use the sugar both as an energy source and as the basic building block for growth.

Why are the intestines and stomach not weighed during an autopsy.

Answers

Answer:

All the internal organs are examined for injury and disease and weighed. They Intestines and stomach are not weighed. The pathologist drains the intestines in a sink to remove any undigested food and feces that remain.

All the internal organs are examined for injury and disease and weighed. They Intestines and stomach are not weighed. The pathologist drains the intestines in a sink to remove any undigested food and feces that remain.

What is autopsy?

A post-mortem examination, often known as an autopsy, is a specialist surgical process used to ascertain the cause and manner of death. The medical explanation for why a patient passed away is called the cause of death.

The circumstances surrounding the death are known as the mode of death. The following causes of death are recognized in natural, accident, homicide and unknown.

Our understanding of disease is constantly expanding thanks to autopsies. The information obtained through autopsy enables professionals to better comprehend disease processes, make accurate diagnoses, enhance treatment, and perhaps even help other patients who are currently afflicted with a similar condition.

Therefore, All the internal organs are examined for injury and disease and weighed. They Intestines and stomach are not weighed. The pathologist drains the intestines in a sink to remove any undigested food.

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The segment of the nephron between the proximal and distal tubules that loops down into the medulla of the kidney and returns back to the cortex is called the

Answers

I don’t see any picture but uh I suggest you try looking back in your notes

Crossing over is a process that occurs during formation of gametes. How does crossing over lead to genetic variation in offspring?

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Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.

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A bacterium is inoculated into a tube of nutrient broth and incubated. After incubation, it appears turbid throughout, top to bottom, with the most amount of turbidty at the very top. This bacterium would be called a:

Answers

Answer:

facultative anaerobe

Explanation:

Answer:

Can I guess the answer just give me a sec

Why do parasites not require complex nervous or muscular tissue?

Porque los parásitos no requieren tejido nervioso o muscular complejo?

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Poorly developed nervous and muscular systems – because parasites live inside their hosts, they don't need eyes, ears or a keen sense of smell to detect potential predators nor a brain to facilitate escape. They have little need for a muscular system because they have no place to go. 

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In the figure above, where does the neurotransmitter dopamine have its effect?.

Answers

There is no figure above so I can’t answer your question sorry !

please help asap asap asap

Answers

Answer:

true

Explanation:

because it's helps the sunlight

What are the two types of reactions enzymes facilitate?

Answers

catalyzed and uncatalyzed

Chlorophyll appears green because it…?

Answers

Answer:

Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green. Plants that use photosynthesis to make their own food are called autotrophs.

Answer:

A. absorbs green light

B. reflects green light

C. emits green light

ANSWER: B. reflects green light

Explanation:

our eyes can only see what objects reflect, so if it's appearing green then obviously it's reflecting the green light.

Many fishes and other organisms that live in the deep ocean produce light. What are two ways in which this light might be useful?

Answers

Answer:

Explanation:

Bioluminescence is used by living things to hunt prey, defend against predators, find mates, and execute other vital activities. Some species luminesce to confuse attackers. Many species of squid, for instance, flash to startle predators, such as fish.

whats the process of (kepler-186f) fusion between these atoms that occurs in all-stars

Answers

Answer: the main element

Explanation: vamp

The space that an organism in an ecosystem lives in is called a

A) community
B) population
C) habitat
D) niche
llo

Answers

Answer:

Answer C) Habitat.....

Which plate is the Eurasian plate?
A. D
B. C
C. B
D. A

Answers

i believe it’s D. :)

Which of the following is a lipid-protein substance produced by neuroglial cells?

Answers

Answer:

Myelin

Explanation: is correct

Answer:

3: Myelin

Explanation:

What is the shape of an onion cell?

Answers

Answer:

The general shape of an onion cell is square or rectangular. The interior of the cell is easy to see and focuses well for microscopic observation.

Explanation:

Answer:

An onion cell's general shape is either square or rectangular in shape. The interior of the cell is easy to see and focuses well for microscopic observation, thanks to its transparent structure.

Explanation:

Hope it helps:)

The gel below shows a result of the experiment you designed using the DNA of three different individuals (S1-S3). It also shows a negative (C-) and a positive (C ) control, as well as a DNA marker. Why did S2 have three bands

Answers

Restriction enzymes recognize specific nucleotidic sequences. The molecule with no recognition site will not be digested. Individual S2 probably had molecules with the recognition site and others with a different sequence.

--------------------------

A restriction enzyme is a degradative polymer that recognizes and cuts up specific nucleotide sequences in DNA.

Restriction enzymes can produce cohesive cuts or blunt (abrupt) cuts, depending on the recognition sites.

The frequency in which the restriction enzyme will produce the cuts depends on the recognition sequences and the number of bases that compose them.

So restriction enzymes cut DNI molecules into different short sequences of varying lengths.

These pieces are called minisatellites and exhibit the existing variation from one person to the next.

These short sequences can be separated by using gel electrophoresis and will express a pattern of differentiation.

When the nucleotidic sequence of the DNA molecule does not include the recognition site, the enzyme will not cut this fragment. The enzyme does not digest this molecule.

Since the negative control does not have a recognition site, it is not digested by the enzyme.

The positive control is digested, meaning that these molecules carry the recognition site.

Probably DNA molecules from individual S1 do not have the recognition site either.

The enzyme recognizes the sequence in DNA from individual S3 and cuts it into two fragments.

The lane of Individual S2 includes both options: digested and not digested DNA. This means that the sample taken from this individual included DNA

                               ⇒  carrying the sequence, and

                               ⇒  not carrying the recognition sequence.

So enzymes digest molecules carrying the recognition sequence, and the other ones remain undigested.

Probably, individuals S1 and S3 are h0m0zyg0us, while individual S2 is heter0zyg0us.

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Sexual reproduction allows for more genetic diversity than asexual reproduction.

options:
True
False

Answers

Answer:

True.

Explanation:

*30 POINTS* PLZ HELP
The following list of events happens during meiosis:

Prophase I: Crossing over between homologous chromosomes occurs.
Metaphase I: Tetrads line up at the metaphase plate.
Anaphase I: Tetrads are separated.
Telophase I: Nuclear envelopes reform around the separated chromosomes.
Prophase II: Chromosomes condense.
Metaphase II: Chromosomes line up at metaphase plate.
Anaphase II: Sister chromatids separate into daughter chromosomes.
Telophase II: Nuclear envelopes reform around the daughter chromosomes.
Identify the answer choice that correctly lists the events from above that lead to new genetic combinations in the gametes.
(1 point)

1, 2, and 5

5 and 6

5, 6, and 7

1 and 2

Answers

Answer:

let me take the test i will tell you after

Explanation:

Mastication is performed by which of the following accessory digestive organs?

Answers

Answer:

d. All of the above

Explanation: is correct

which statement is true regarding the school circular respiration

A. the reactants of circular respiration are similar with the reaction of photosynthesis

B. the products of circular respiration are similar with the products photosynthesis

C. the reactants of circular respiration are obtained from the products of photosynthesis

D. circular respiration occurs on the and autotrophs photosynthesis occurs only in heterotrophs ​

Answers

Answer:

I think A or B, but I really think it's A, you should try it.

Explanation:

Hope it helps you:>

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