Which of these planets has a density so low that it could float in water?a. Jupiter
b. Saturn
c. Uranus
d. Neptune

Answers

Answer 1

Answer: the answer is b.saturn

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All of the following are functions of the peripheral nervous system except_____. A. it interprets signals from the external environment. B. it sends signals to the internal organs. C. it receives messages from the central nervous system. D. it sends messages directly to muscles and glands.

Answers

All of the following are functions of the peripheral nervous system except it sends signals to the internal organs. The correct option among all the options that are given in the question is the second option or option "B". I hope that this answer has actually come to your help.

B. It sends signals to the internal organs

Which of the following is an unsegmented worm with a pseudocoelom.A. sponge
B. cnidarian
C. arthropod
D. roundworm

Answers

Is not a sponge, cnidarian or arthropods . The pseudocoelom is specific to any invertebrates with three body layers. So, your answer is D - roundworm

The correct answer is option D, Round worm

Roundworm belongs to the phylum Nematodes and some common characteristics of Nematodes are – they are small, slender , un-segmented, smooth and shiny. Roundworm has a round body just like a spiny –headed worm which do not have segments . Also they possess a body cavity known as pseudocoel in which the internal body organs lie and the body cavity is not lined with mesodermal cells.

Fossil sponges are among the oldest known animal fossils. true or false

Answers

This is true. There is debate as to from what period have the currently examined sponges come, but the common consensus is that they go all the way to the Precambrian period, some 600 million years ago. They gave way to many discoveries about evolution of organisms because it was the first organism to have some genes that are found in modern day organisms.

True. Fossil sponges are amongst the oldest known animal fossil.

Give three examples of places bacteria live.

Answers

Wet places, dirty things & your body. (poop)

Socks, Cream cheese, and Sponges.

Which reason provides the best explanation of why a bar graph was selected to show the data on the table

Answers

Bar graphs are a graphical representation of data using bars of differing heights. Bar graphs are used to compare objects. Bar graphs can aid us to see the relationships quickly. It can be presented horizontally and vertically.

Identify the type of mutation shown in the diagram, with respect to chromosome 20.

Answers

The chromosomal mutation is C. Nondisjunction .Therefore , C. Nondisjunction is correct .

There are a number of factors that can increase the risk of nondisjunction, including:

Age: The risk of nondisjunction increases with age, especially in women.

Genetic factors: People with certain genetic conditions are at increased risk of nondisjunction.

Environmental factors: Exposure to certain environmental toxins, such as radiation, can also increase the risk of nondisjunction.

There is no cure for nondisjunction, but there are a number of things that can be done to manage the symptoms and improve the quality of life of people with nondisjunction-related birth defects.

Here are some additional details about nondisjunction:

Nondisjunction can affect any chromosome, but it is most common on chromosomes 21, 13, and 18.

Nondisjunction is estimated to be the cause of 50-60% of all miscarriages.

Nondisjunction is also the cause of some stillbirths and birth defects.

For such a more question on mutation brainly.com/question/14438201

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Final answer:

Identification of mutation type, such as point mutation, silent mutation, insertion, deletion, transversion, or transition, depends on the specific changes in DNA or RNA sequences. For example, a change in a single base pair signifies a point mutation.

Explanation:

A thorough identification of the type of mutation seen on Chromosome 20 goes beyond merely looking at the question diagram. It depends on the specific alteration of the DNA or RNA sequences. Several types of mutations exist including point mutations, silent mutations, insertions, deletions, transversions and transitions, among others.

As an illustration, suppose the mutation involved a single base pair alteration, this would be a point mutation where one nucleotide is substituted with another. Transversions involve switching a purine with a pyrimidine or vice versa. If the mutation led to an addition or removal of a base pair, this would be termed an insertion or deletion respectively. Occasionally, a fraction of DNA from one chromosome may get transported to another chromosome or a different part of the same chromosome, a scenario known as translocation.