BIOLOGY HIGH SCHOOL

Which of these Paleozoic periods is the youngest?a. Permian
b. Devonian
c. Ordovician
d. Pennsylvanian

Answers

Answer 1
Answer: The youngest is Permian, so A.
Answer 2
Answer:

Answer:

a

Explanation:

Related Questions

Which factor has the greatest influence on thedevelopment of new, inheritable characteristics?(1) combinations of genes resulting from mitosis(2) mutations of genes in reproductive cells(3) sorting of genes during asexual reproduction(4) recombining of genes during differentiation
Cellular respiration is called an aerobic process because it requires a. glucose. b. oxygen. c. exercise. d. light.
True or False earthquake always occurs where there is a build up of friction along a fault?
Sponges have no “true tissues.” What does this mean?Select one of the options below as your answer: a. They perform body functions by diffusion. b. They have organs for specific functions. c. Similar cells do not cooperate together.
which term is commonly used to describe the production of valuable proteins in genetically modified plants and animals?

For the average young adult female resting in a reclined position, the heart pumps out approximately 5 liters of blood per minute. Blood flows through the body, supplying oxygen and nutrients to and removing waste products and heat from cells undergoing metabolism. What activity will substantially increase blood flow volume of this young adult?A) a vegetarian diet
B) strenuous exercise
C) playing video games
D) a diet high in carbohydrates

Answers

Probably B) strenuous exercise. If not B then it's probably A. I don't know for sure though

the answer is B for sure

Folded membranes are an advantage to a cell because ?

Answers

Folding the membranes increases the surface area of the cell, which increases the number of absorption or reaction cites

Trace the path of an egg cell by filling in the blanks. After the egg breaks through the ovarian wall, it travels into the _____, which overlies each ovary. From there, it reaches the _____, or womb. If the egg is fertilized by a sperm cell, it is implanted in the _____. uterus; ovary; fallopian tube ovary; fallopian tube; uterus fallopian tube; uterus; endometrium endometrium; uterus; fallopian tube

Answers

The sequence of the answers is Fallopian tube, uterus and endometrium. The egg cell travels into the Fallopian tube which the ovaries are found. Then, it reaches the uterus. If fertilization happened it will be implanted into the endometrium.

Final answer:

The path of an egg cell after ovulation is from the ovary to the fallopian tube, then to the uterus, and if fertilized, it implants in the endometrium.

Explanation:

After an egg cell is released from the ovarian wall during ovulation, it first moves into the fallopian tube that sits adjacent to each ovary. The egg cell then travels down the fallopian tube towards the uterus - also known as the womb. If the egg gets fertilized by a sperm cell during its journey, it will implant itself in the endometrium, which is the inner lining of the uterus and supports the growing embryo in early pregnancy. Hence, the correct fill-in the blanks for this question is: fallopian tube; uterus; endometrium.

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Which of these is an inclusion, not an organelle? Select one: a. lysosome b. melanin c. cilia d. microtubule

Answers

Answer:

The correct answer is b. melanin

Explanation:

The various pigments and nutrients which are found in a cell but are not organelle because they do not perform activities like organelle perform are called cell inclusions. Some of the examples of cell inclusions are lipids, melanin, lipids, etc.

Therefore melanin is considered as inclusion. Melanin is produced by specialized cells called melanocytes from where it gets transported to skin and hair which provided the skin and hair its color. Therefore the right answer is melanin.

Melanin is an inclusion, not an organelle.

An organelle is a specialized structure within a cell that performs specific functions. Based on the options given, melanin is an inclusion, not an organelle.

Melanin is a pigment found in the skin, hair, and eyes, responsible for color. It is not a specialized structure within a cell like lysosome, cilia, and microtubule, which are all organelles.

In conclusion, the correct answer is melanin.

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The abbreviation of the nucleic acid that codes for the proper sequence of amino acids in proteins is dna. true false

Answers

i think its true.....

Are the functions of the limbs of each of the animals illustrated the same or different?

Answers

Same

Homologous structures refer to structures that have similar characteristics in terms of morphology, anatomy, genetics, and embryology yet still different when their functions are concerned. On the other hand, analogous structures are those organisms that have similar lifestyle because they live in the same habitat yet they belong in different groups.
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Three genes in fruit flies affect a particular trait, and one dominant allele of each gene is necessary to get a wild-type phenotype. a. What phenotypic ratios would you predict among the progeny if you crossed triply heterozygous flies? b. You cross a particular wild-type male in succession with three tester strains. In the cross with one tester strain (AA bb cc), only 1/4 of the progeny are wild type. In the crosses involving the other two tester strains (aa BB cc and aa bb CO, half of the progeny are wild type. What is the genotype of the wild-type male?
A company makes a $5 profit on each non-faulty product it sells. Approximately 2% of the products manufactured are faulty, with no way to discover which ones are faulty before delivery. If replacement-and-repair costs for the faulty products are $100 each, what is the profit per item?
Hydrogen peroxide is a harmful by-product of normal metabolic activity. In order to prevent damage, hydrogen peroxide must be broken down into water and oxygen quickly. What would speed up the decomposition of hydrogen peroxide? A) a catalyst B) bubbling in oxygen C) decreasing the temperature D) adding more hydrogen peroxide