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4 years ago

which group of animals has existed the longest? a. tubulidentates b. perissodactyls c. artiodactyls d. sirenians

1 answer:

7 0

The correct answer is C. Artiodactyls

They've been around more than the others and have existed for some 55 million years.

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Conception is the moment a sperm meets an egg resulting in pregnancy. <br> a. True<br> b. False

oee [108]

A. True
Conception is basically the action of conceiving a child.
In conclusion, when a sperm meets an egg, the egg gets fertilized leading to pregnancy.

8 0

4 years ago

Read 2 more answers

With the sun in the center create a functional food web combining at least 4 separate food chains. Identify the trophic feeding

Rudiy27

Answer:

yes yes yah yup correcto very gud noice

Explanation:

and yes

7 0

3 years ago

If a man and a woman, each with sickle-cell trait, were planning to marry, what information could you provide them regarding the

kiruha [24]

Answer:

I'll inform them that the possibility of all their future children/offspring being phenotypically sickle-celled is very high.

Explanation:

Sickle cell is an inherited disease condition in which the red blood cells of the blood loses its shape and hence, dies or gets broken down. It has to do with the blood genotype of an individual. There are three major types of blood genotypes in humans namely: AA, AS, and SS. SS is the recessive genotype that codes for the sickle cell trait.

Hence, a human with the sickle cell trait has a genotype- SS. Therefore, according to this question, a man and a woman, each with sickle-cell trait (SS), were planning to marry, This will mean that both the man and the woman will always produce a gamete with S allele, which will combine to form an SS offspring. In other words, all of the offsprings of this man and woman will be sickle-celled.

7 0

3 years ago

What is the area just below the rib cage called?

Ratling [72]

Answer:

It's called the sternum

Explanation:

5 0

3 years ago

Example 1: Two different enzymes are able to catalyze the same reaction, A → B. They both have the same Vmax, but differ their K

luda_lava [24]

Answer: (a) = 0.022mmoles/minute; (b) = 0.00022mmoles/minute; (c) = 0.022mmoles/minute

Explanation:

The Michaelis- Menten equation is used to show the relationship between substrate concentration and reaction rate.

The equation is Vo = Vmax[S]/(Km + [S]

where Vo is the initial velocity, Vmax is the maximum velocity, [S] is the substrate concentration, Km is the Michaelis constant.

(a) For enzyme 1; Vo = 0.002mmoles/minute, Vmax = ?, [S] = 0.1mM, Km =1.0mM; making Vmax subject of the formula;

Vmax = Vo * (Km + [S])/ [S]

Vmax = 0.002*(1.0 + 0.1)/ 0.1

Vmax = 0.022mmoles/minute (Vmax for Enzyme 1&2)

(b) Vo = Vmax[S]/(Km + [S]

Vo = 0.022 * 0.1/(10+0.1) = 0.00022mmoles/minute

Vo = 0.022*1000/(1.0+1000) = 0.022mmoles/minute

3 0

3 years ago